1993 Jeep Cherokee
GENERAL INFORMATION
Steering, Suspension, Wheel Alignment, Wheels and Tires
Motorist Assurance Program
Standards For Automotive Repair
All Makes and Models
INTRODUCTION TO MOTORIST ASSURANCE PROGRAM (MAP)
CONTENTS
Motorist Assurance Program (MAP)
OVERVIEW
OVERVIEW OF SERVICE REQUIREMENTS & SUGGESTIONS
Steering and Suspension
AIR RIDE SUSPENSION
AIR SHOCKS AND AIR STRUTS
AIR SPRING VALVES
AIR SPRINGS
COMPRESSORS
HEIGHT SENSORS
MODULES
RELAYS (COMPRESSOR)
SWITCHES (ON/OFF)
TORSION SPRINGS (COUNTER BALANCING)
TUBING
WARNING LAMPS
WIRING HARNESSES
AIR RIDE SUSPENSION
AIR RIDE SUSPENSION
AIR RIDE SUSPENSION
AIR RIDE SUSPENSION
AIR RIDE SUSPENSION
AIR RIDE SUSPENSION
AIR RIDE SUSPENSION
AIR RIDE SUSPENSION
AIR RIDE SUSPENSION
AIR RIDE SUSPENSION
AIR RIDE SUSPENSION
AIR RIDE SUSPENSION
BALL JOINTS
BUSHINGS
CENTER LINKS
CONTROL ARM SHAFTS
CONTROL ARMS
DRAG LINKS
ELECTRONIC RIDE CONTROL SHOCKS AND STRUTS
IDLER ARMS
KING PINS
PITMAN ARMS
POWER STEERING HOSES
POWER STEERING (HYDRAULIC) PUMPS
RADIUS ARMS
RELAY RODS
SHOCK ABSORBERS, STRUT CARTRIDGES AND STRUT ASSEMBLIES
SPINDLES
SPRINGS - COIL, LEAF AND TORSION BAR
STEEL POWER STEERING LINES
STEERING ARMS
STEERING DAMPERS
STEERING GEARS (EXCEPT RACK AND PINION)
STEERING GEARS - RACK AND PINION
STEERING KNUCKLES
STRIKE OUT BUMPERS
STRUT RODS
STRUT UPPER BEARING PLATE ASSEMBLIES
SWAY BAR LINKS
SWAY BARS
TIE ROD ENDS (INNER AND OUTER)
TRACK BARS
TRAILING ARMS
WHEEL BEARINGS, RACES AND SEALS
Wheel Alignment WHEEL ALIGNMENT Wheels and Tires
TIRES
VALVE STEMS
WHEEL ATTACHMENT HARDWARE
WHEELS (RIMS)
MOTORIST ASSURANCE PROGRAM (MAP)
OVERVIEW
The Motorist Assurance Program is the consumer outreach effort of the Automotive Maintenance and Repair Association, Inc. (AMRA). Participation in the Motorist Assurance Program is drawn from retailers, suppliers, independent repair facilities, vehicle manufacturers and industry associations.
Our organization’s mission is to strengthen the relationship between the consumer and the auto repair industry. We produce materials that give motorists the information and encouragement to take greater responsibility for their vehicles-through proper, manufacturer-recommended, maintenance. We encourage participating service and repair shops (including franchisees and dealers) to adopt 1) a Pledge of Assurance to their Customers and 2) the Motorist Assurance Program Standards of Service. All participating service providers have agreed to subscribe to this Pledge and to adhere to the promulgated Standards of Service demonstrating to their customers that they are serious about customer satisfaction.
These Standards of Service require that an inspection of the vehicle’s (problem) system be made and the results communicated to the customer according to industry standards. Given that the industry did not have such standards, the Motorist Assurance Program successfully promulgated industry inspection communication standards in 1994-95 for the following systems: Exhaust, Brakes, ABS, Steering and Suspension, Engine Maintenance and Performance, HVAC, and Electrical Systems. Further, revisions to all of these inspection communication standards are continually re-published. In addition to these, standards for Drive Train and Transmissions have recently been promulgated. Participating shops utilize these Uniform Inspection & Communication Standards as part of the inspection process and for communicating their findings to their customers.
The Motorist Assurance Program continues to work
cooperatively and proactively with government agencies and consumer groups toward solutions that both benefit the customer and are mutually acceptable to both regulators and industry. We maintain the belief that industry must retain control over how we conduct our business, and we must be viewed as part of the solution and not part of the problem. Meetings with state and other government officials (and their representatives), concerned with auto repair and/or consumer protection, are conducted. Feedback from these sessions is brought back to the association, and the program adjusted as needed.
To assure auto repair customers recourse if they were not satisfied with a repair transaction, the Motorist Assurance Program offers mediation and arbitration through MAP/BBB-CARE and other non-
profit organizations. MAP conducted pilot programs in twelve states before announcing the program nationally in October, 1998. During the pilots, participating repair shops demonstrated their adherence to the Pledge and Standards and agreed to follow the UICS in communicating the results of their inspection to their customers. To put some "teeth" in the program, an accreditation requirement for shops was initiated. The requirements are stringent, and a self-policing method has been incorporated which includes the "mystery shopping" of outlets.
We welcome you to join us as we continue our outreach... with your support, both the automotive repair industry and your customers will reap the benefits. Please visit MAP at our Internet site www. motorist.org or contact us at:
1444 I Street, NW Suite 700
Washington, DC 20005
Phone (202) 712-9042 Fax (202) 216-9646 January 1999
MAP UNIFORM INSPECTION GENERAL GUIDELINES
OVERVIEW OF SERVICE REQUIREMENTS & SUGGESTIONS
It is MAP policy that all exhaust, brake, steering, suspension, wheel alignment, drive-line, engine performance and maintenance, and heating, ventilation and air conditioning, and electrical services be offered and performed under the standards and procedures specified in these sections.
Before any service is performed on a vehicle, an inspection of the appropriate system must be performed. The results of this inspection must be explained to the customer and documented on an inspection form. The condition of the vehicle and its components will indicate what services/part replacements may be "Required" or "Suggested". In addition, suggestions may be made to satisfy the requests expressed by the customer.
When a component is suggested or required to be repaired or replaced, the decision to repair or replace must be made in the customer’s best interest, and at his or her choice given the options available.
This section lists the various parts and conditions that indicate a required or suggested service or part replacement. Although this list is extensive, it is not fully inclusive. In addition to this list, a technician may make a suggestion. However, any suggestions must be based on substantial and informed experience, or the vehicle manufacturer’s recommended service interval and must be documented.
Some conditions indicate that service or part replacement is required because the part in question is no longer providing the function for which it is intended, does not meet a vehicle manufacturer’s design specification or is missing.
Example:
An exhaust pipe has corroded severely and has a hole in it through which exhaust gases are leaking. Replacement of the exhaust pipe in this case is required due to functional failure.
Example:
A brake rotor has been worn to the point where it measures less than the vehicle manufacturer’s discard specifications. Replacement of the rotor is required because it does not meet design specifications.
Some conditions indicate that a service or part replacement is suggested because the part is close to the end of its useful life or addresses a customer’s need, convenience or request. If a customer’s vehicle has one of these conditions, the procedure may be only to suggest service.
Example:
An exhaust pipe is rusted, corroded or weak, but no leaks are present. In this case, the exhaust pipe has not failed. However, there is evidence that the pipe may need replacement in the near future. Replacement of the pipe may be suggested for the customer’s convenience in avoiding a future problem.
Example:
The customer desires improved ride and/or handling, but the vehicle’s shocks or struts have not failed. In this case, replacement may be suggested to satisfy the customer’s wishes. In this case, replacement of the shocks or struts may not be sold as a requirement.
A customer, of course, has the choice of whether or not a shop will service his or her vehicle. He or she may decide not to follow some of your suggestions. When a repair is required, a MAP shop must refuse partial service on that system if, in the judgment of the service provider, proceeding with the work could create or continue an unsafe condition. When a procedure states that required or suggested repair or replacement is recommended, the customer must be informed of the generally acceptable repair/replacement options whether or not performed by the shop.
When presenting suggested repairs to the customer, you must present the facts, allowing the customer to draw their own conclusions and make an informed decision about how to proceed.
The following reasons may be used for required and suggested services. These codes are shown in the "Code" column of the MAP Uniform Inspection & Communications Standards that follow:
Reasons to Require Repair or Replacement
A - Part no longer performs intended purpose
Ð’ - Part does not meet a design specification (regardless of
performance) С - Part is missing
NOTE: When a repair is required, the shop must refuse partial service to the system in question, if the repair creates or continues an unsafe condition.
Reasons to Suggest Repair or Replacement
1 - Part is close to the end of its useful life (just above
discard specifications, or weak; failure likely to occur soon, etc.)
2 - To address a customer need, convenience, or request (to
stiffen ride, enhance performance, eliminate noise, etc.)
3 - To comply with maintenance recommended by the vehicle’s
Original Equipment Manufacturer (OEM)
4 - Technician’s recommendation based on substantial and
informed experience
NOTE: Suggested services are always optional. When presenting suggested repairs to the customer, you must present
the facts, allowing the customer to draw their own conclusions and make an informed decision about how to proceed.
STEERING AND SUSPENSION
SERVICE PROCEDURES REQUIRED AND SUGGESTED FOR PROPER VEHICLE
OPERATION
Steering and suspension are complex systems made up of a variety of interdependent components. For proper vehicle handling, ride, and tire wear, a thorough inspection is required whenever suspension work is being performed.
Conditions listed assume that the problem has been isolated to the specific component by proper testing procedures.
NOTE: When replacing steering and/or suspension components which may affect an alignment angle, you are required to check and adjust alignment as needed. Refer to the OEM specifications.
CAUTION: DO NOT use ride height altering or load compensating
components, such as variable rate springs and coil over shocks, on vehicles with height or load sensing proportioning valve-equipped braking systems, unless these components are original equipment.
AIR RIDE SUSPENSION
NOTE: Depending on the air suspension design, there are some
aftermarket products available to eliminate the air ride suspension on certain vehicles. If the system has been eliminated with one of these products, then no service is suggested or required.
AIR RIDE SUSPENSION - AIR SHOCKS AND AIR STRUTS
NOTE: This section covers the air spring portion of the air shock or strut. For damping portion of shock or strut conditions and procedures, refer to the SHOCK ABSORBERS, STRUT CARTRIDGES AND STRUT ASSEMBLIES section.
AIR RIDE SUSPENSION - AIR SHOCK AND AIR STRUT INSPECTION
Condition Code Procedure
Inner fabric of air bag
damaged A Require replacement.
Leaking A . . Require repair or replacement.
Outer covering of air bag
is cracked to the extent
that inner fabric of air
bag is visible 1 Suggest replacement.
AIR RIDE SUSPENSION - AIR SPRING VALVES
AIR RIDE SUSPENSION - AIR SPRING VALVE INSPECTION
Condition Code Procedure
Attaching hardware
incorrect A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware threads stripped
(threads missing) A
Blocked A
Connector bent A
Connector broken A
Connector loose A
Inoperative A
Leaking A
Restricted A
Require replacement of incorrect part.
Require repair or replacement of loose part.
Require replacement of missing
part.
Require repair or replacement of part with damaged threads.
Require replacement of part
with stripped threads.
Require repair or replacement.
Require repair or replacement.
Require replacement.
Require repair or replacement. Require repair or replacement. Require repair or replacement. Require repair or replacement.
AIR RIDE SUSPENSION - AIR SPRINGS
AIR RIDE SUSPENSION - AIR SPRING INSPECTION
Condition
Code
Procedure
Attaching hardware
broken A
Attaching hardware
incorrect A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware
threads stripped
(threads missing) A
Collar cracked A
End cap cracked A
Inner fabric of bag
damaged A
Leaking A
Outer covering of air bag is cracked to the extent that inner fabric of air
bag is visible 1
Piston cracked A
Require replacement of broken
part.
Require replacement of incorrect part.
Require repair or replacement of loose part.
Require replacement of missing
part
Require repair or replacement of part with damaged threads.
Require replacement of part with stripped threads.
Require replacement.
Require replacement.
Require replacement.
Require repair or replacement.
Suggest replacement. Require replacement.
AIR RIDE SUSPENSION - COMPRESSORS
AIR RIDE SUSPENSION - COMPRESSOR INSPECTION
... Require replacement of part with stripped threads. Require repair or replacement.
A Require replacement.
A .. Require repair or replacement.
A (1) Further inspection
required.
Ð’ (2) Further inspection
required.
Inoperative A Require replacement.
Leaking A . . Require repair or replacement.
Missing C Require replacement.
(1) - If failure to build pressure is traced to the
compressor, require replacement.
(2) - If excessive run time is traced to the compressor,
require replacement.
Condition Code
Attaching hardware bent . B
Attaching hardware
broken A
Attaching hardware
loose
С
Attaching hardware
missing
Attaching hardware
threads damaged A
A A
Connector bent
Connector broken
Connector loose
Does not build pressure
Excessive run time ...
Attaching hardware threads stripped (threads missing)
Procedure
Require repair or replacement of bent part.
Require replacement of broken
part.
Require repair or replacement of loose part.
Require replacement of missing
part.
Require repair or replacement of part with damaged threads.
AIR RIDE SUSPENSION - HEIGHT SENSORS
AIR RIDE SUSPENSION - HEIGHT SENSOR INSPECTION
Condition
Attaching hardware bent
Attaching hardware
broken
Attaching hardware corroded, affecting structural integrity
Attaching hardware
loose
Attaching hardware
missing
Attaching hardware
Code Ð’
A A
Procedure
Require repair or replacement of bent part.
Require replacement of broken
part.
Require replacement of corroded part.
Require repair or replacement of loose part.
Require replacement of missing
part.
threads damaged A
A
Attaching hardware threads stripped (threads missing)
Dust boot missing 2
Dust boot split 2
Dust boot torn 2
Housing cracked A
Ð’
Lead routing incorrect .. R
Loose
Missing C
Output signal incorrect . A
Wire lead damaged A
Require repair or replacement of part with damaged threads.
Require replacement of part with stripped threads.
(1) Suggest replacement.
(1) Suggest replacement.
(1) Suggest replacement.
Require replacement.
Require rerouting according to
vehicle manufacturer’s
specifications.
Require adjustment to vehicle
manufacturer’s specifications.
Require replacement.
Require repair or replacement. Require repair or replacement.
(1) - This condition can lead to damage of the sliding magnet, which, in turn, causes premature sensor failure.
AIR RIDE SUSPENSION - MODULES
AIR RIDE SUSPENSION - MODULE INSPECTION
Condition
Code
Procedure
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware
threads stripped
(threads missing) A
Housing cracked 2
Inoperative A
Missing C
Require repair or replacement of loose part.
Require replacement of missing
part.
Require repair or replacement of part with damaged threads.
Require replacement of part
with stripped threads.
Suggest repair or replacement.
Require replacement.
Require replacement.
AIR RIDE SUSPENSION - RELAYS (COMPRESSOR)
AIR RIDE SUSPENSION - RELAY (COMPRESSOR) INSPECTION
Condition
Code
Procedure
Housing cracked 2 (1) Suggest replacement.
Intermittent A Require replacement.
Missing C Require replacement.
Output signal incorrect . A Require replacement.
(1) - If moisture enters the relay, it can reduce life expectancy or impair function.
AIR RIDE SUSPENSION - SWITCHES (ON/OFF)
AIR RIDE SUSPENSION - SWITCH (ON/OFF) INSPECTION
Condition Code Procedure
Broken A Require replacement.
Missing C Require replacement.
Output signal incorrect . A Require replacement.
AIR RIDE SUSPENSION - TORSION SPRINGS (COUNTER BALANCING)
AIR RIDE SUSPENSION - TORSION SPRING (COUNTER BALANCING) INSPECTION
Condition Code Procedure
Attaching hardware bent . B ... Require repair or replacement
of bent part. Attaching hardware
broken A ... Require replacement of broken
part. Attaching hardware
incorrect A Require replacement of
incorrect part. Attaching hardware
loose A ... Require repair or replacement
of loose part. Attaching hardware
missing C . . Require replacement of missing
part. Attaching hardware
threads damaged A ... Require repair or replacement
of part with damaged threads. Attaching hardware threads stripped
(threads missing) A Require replacement of part
with stripped threads.
Broken A Require replacement.
Missing C Require replacement.
AIR RIDE SUSPENSION - TUBING
AIR RIDE SUSPENSION - TUBING INSPECTION
Condition Code Procedure
Attaching hardware
incorrect A Require replacement of
incorrect part. Attaching hardware
loose A ... Require repair or replacement
of loose part. Attaching hardware
missing C . . Require replacement of missing
part.
Blocked A . . Require repair or replacement.
Fitting incorrect B Require replacement.
Leaking A . . Require repair or replacement.
Line type incorrect B Require replacement.
Missing C Require replacement.
Restricted A . . Require repair or replacement.
Routed incorrectly B Require routing correction.
AIR RIDE SUSPENSION - WARNING LAMPS
AIR RIDE SUSPENSION - WARNING LAMP INSPECTION
Condition
Code
Procedure
Bulb burned out A Require replacement.
Warning light does not come on during
bulb check Further inspection required to
determine cause.
Warning light flashes Further inspection required to
determine cause. Warning light is
intermittent Further inspection required to
determine cause. Warning light stays on after initial
bulb check Further inspection required to
determine cause.
AIR RIDE SUSPENSION - WIRING HARNESSES
AIR RIDE SUSPENSION - WIRING HARNESS INSPECTION
Code
Condition
Connector bent A
Connector broken A
Connector loose A
Damaged (cut, burned, or
chafed) A
Excessive resistance .... B
Fuse blown A
Fusible link blown A
Open A
Poor ground A
Routed incorrectly B
Shorted A
Terminal bent A
Terminal broken A
Terminal corroded A
Terminal loose A
Procedure
Require repair or replacement. Require repair or replacement. Require repair or replacement.
Require repair or replacement.
Require repair or replacement.
Require replacement.
Require replacement.
Require repair or replacement.
Require repair or replacement.
Require rerouting according to
vehicle manufacturer’s
specifications.
Require repair or replacement.
Require repair or replacement.
Require repair or replacement.
Require repair or replacement.
Require repair or replacement.
BALL JOINTS
Before requiring or suggesting ball joint replacement, the approved OEM procedure must be used to measure ball joint wear. The measurement(s) obtained, along with the vehicle manufacturer’s specifications, must be noted on the inspection report. Some states require that these measurements also appear on the invoice.
NOTE: The term "perceptible movement," defined as any visible
movement in any direction, has been the industry standard for determining the need for replacement of follower ball joints. Some vehicle manufacturers are now publishing specifications for follower ball joints that were
previously diagnosed by the "perceptible movement" standard. Before requiring or suggesting any parts be replaced based on "perceptible movement," consult your repair manual to determine if OEM specifications exist.
You are not required to replace ball joints in axle sets. However, when replacing a ball joint due to wear exceeding manufacturer’s specification, you may suggest replacement of the other ball joint if its measurement shows it is close to the end of its useful life, for preventive maintenance.
BALL JOINT INSPECTION
Condition Code
Attaching hardware bent . B
Attaching hardware
broken
A
Attaching hardware corroded, affecting structural integrity
Attaching hardware
incorrect A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware threads stripped
(threads missing) A
Binding A
Grease boot cracked 2
Grease boot missing 2
Grease boot torn 2
Grease fitting broken ... A
Grease fitting missing .. R
A
Grease fitting won’t seal ..
Greaseable ball joint will
Procedure
Require repair or replacement
of bent part if available;
otherwise, replace ball joint.
Require replacement of broken
part if available; otherwise,
replace ball joint.
Require replacement of corroded
part if available; otherwise,
replace ball joint.
Require replacement of
incorrect part if available; otherwise, replace ball joint.
Require repair or replacement
of loose part if available;
otherwise, replace ball joint.
Require replacement of missing
part if available; otherwise,
replace ball joint.
Require repair or replacement
of part with damaged threads if
available; otherwise, replace
ball joint.
Require replacement of part
with stripped threads if
available; otherwise, replace
ball joint.
(1) Further inspection
required.
.... (2) Suggest replacement.
.... (3) Suggest replacement.
.... (4) Suggest replacement.
Require replacement of grease
fitting.
Require replacement of grease
fitting.
Require replacement of grease
fitting.
not take grease
Nut on ball joint loose
Pre-load adjustment
incorrect
Seized
Stud bent
Stud broken
Threads damaged
Threads stripped (threads
missing)
Wear exceeds
manufacturer’ s
specifications
2 (5) Suggest replacement of
grease fitting.
A (6) Require repair or
replacement.
Ð’ .. Require repair or replacement.
A Require replacement.
Ð’ (7) Require replacement.
A (7) Require replacement.
A .. Require repair or replacement.
A (7) Require replacement.
Ð’ Require replacement.
(1) - If greaseable, grease ball joint. If problem persists
or joint is non-greaseable, require replacement.
(2) - Cracked grease boot will allow contaminants to enter
the ball joint and will accelerate wear.
(3) - Lack of grease boot will allow contaminants to enter
the ball joint and will accelerate wear.
(4) - Torn grease boot will allow contaminants to enter the
ball joint and will accelerate wear.
(5) - If the greaseable ball joint still will not take grease
after replacing the grease fitting, suggest replacement of ball joint.
- Check for bent stud or damaged taper hole.
- Check for damaged taper hole.
BUSHINGS
BUSHING INSPECTION
Condition Code
Attaching hardware bent . B
A
Attaching hardware
broken
Attaching hardware corroded, affecting structural integrity ... A
Attaching hardware
incorrect A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Procedure
Require repair or replacement
of bent part if available;
otherwise, replace bushing.
Require replacement of broken
part if available; otherwise,
replace bushing.
Require replacement of corroded
part if available; otherwise,
replace bushing.
Require replacement of
incorrect part if available; otherwise, replace bushing.
Require repair or replacement of loose part if available; otherwise, replace bushing.
Require replacement of missing
part if available; otherwise,
replace bushing.
Require repair or replacement
No service suggested or
required.
(1) - If noise isolated to bushing, suggest repair or
replacement. CAUTION: Use only approved lubricant on rubber bushings.
Petroleum-based lubricants may damage rubber bushings.
Attaching hardware threads stripped (threads missing)
Binding
Deteriorated, affecting
performance
Distorted, affecting
performance
Leaking (fluid-filled
type)
Missing
Noisy
Rubber separating from
internal metal sleeve on
bonded bushing
Seized
Shifted (out of
position)
Split
Surface cracking (weather-
checked)
A
A A A
A С
2
A A
Ð’ A
of part with damaged threads if available; otherwise, replace
bushing.
Require replacement of part
with stripped threads if
available; otherwise, replace
bushing. Require repair or replacement.
Require repair or replacement. Require repair or replacement.
Require replacement.
Require replacement.
(1) Further inspection
required.
Require replacement. Require replacement.
Require repair or replacement.
Require replacement.
CENTER LINKS
CENTER LINK INSPECTION
Condition
Code
Procedure
Attaching hardware
incorrect A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
A
Attaching hardware threads stripped (threads missing)
Require replacement of
incorrect part, if available; otherwise, replace center link.
Require repair or replacement
of loose part, if available;
otherwise, replace center link.
Require replacement of missing
part, if available; otherwise,
replace center link.
Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace center link.
Require replacement of part with stripped threads, if
available; otherwise, replace
center link.
Bent
Ð’ Require replacement.
(1) Further inspection required.
.... (2) Suggest replacement.
.... (3) Suggest replacement.
.... (4) Suggest replacement.
Require replacement of grease
fitting.
Require replacement of grease
fitting.
Require replacement of grease
fitting.
.... (3) Suggest replacement. .... (4) Suggest replacement.
Binding A
2 2 2 A
Grease boot cracked Grease boot missing
Grease boot torn
Grease fitting broken
Grease fitting missing
Grease fitting
won’t seal
A
Grease seal missing 2
Grease seal torn 2
Looseness (perceptible
(5) Suggest replacement.
... (5)(6) Require replacement.
A Require replacement.
(7) Require replacement.
(7) Require replacement.
horizontal movement) ... 1 Looseness that is
excessive B
Seized
Stud bent B
Stud broken A
Stud loose in
(7) Require repair or
replacement.
(8) Require replacement.
Require repair or replacement.
taper hole A
Taper hole elongated .... A
Threads damaged A
Threads stripped
A
(7) Require replacement.
(threads missing) Wear exceeds manufacturer’ s specifications
Ð’ Require replacement.
(1) -
-
-
-
-
If greaseable, grease joint. If problem persists or joint is non-greaseable, require replacement. Cracked grease boot will allow contaminants to enter the joint and will accelerate wear.
Lack of grease boot will allow contaminants to enter the joint and will accelerate wear.
Torn grease boot will allow contaminants to enter the joint and will accelerate wear.
If manufacturer’s procedures for inspection exist, use those procedures; otherwise, use an approved inspection method such as the dry park check.
CAUTION: DO NOT use pliers or pry bar to check ball and socket movement. Use only moderate hand pressure.
(6) - Excessive looseness is defined as being significant
enough to affect vehicle handling or structural integrity.
- Check for damaged taper hole.
- Check for damaged stud.
CONTROL ARM SHAFTS
CONTROL ARM SHAFT INSPECTION
Condition
Attaching hardware
broken
Code Procedure
Require replacement of broken
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware
threads stripped
(threads missing) A
Bent B
Shaft bushing surface
undersized (worn) B
Threads damaged A
Threads stripped (threads
missing) A
part, if available; otherwise, replace shaft.
Require repair or replacement
of loose part, if available;
otherwise, replace shaft.
Require replacement of missing
part, if available; otherwise,
replace shaft.
Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace shaft.
Require replacement of part
with stripped threads, if
available; otherwise, replace
shaft.
Require replacement.
Require replacement.
Require repair or replacement.
Require replacement.
CONTROL ARMS
CONTROL ARM INSPECTION
Code
Condition
Attaching hardware
bent
Attaching hardware
broken
A
Attaching hardware corroded, affecting structural integrity
Attaching hardware
incorrect A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Procedure
Require repair or replacement
of bent part, if available;
otherwise, replace control arm.
Require replacement of broken
part, if available; otherwise,
replace control arm.
Require replacement of corroded
part, if available; otherwise,
replace control arm.
Require replacement of
incorrect part, if available; otherwise, replace control arm.
Require repair or replacement
of loose part, if available;
otherwise, replace control arm.
Require replacement of missing
part, if available; otherwise,
replace control arm.
Require repair or replacement of part with damaged threads,
Attaching hardware
threads stripped
(threads missing)
Bent
Bushing hole oversized . .
Ball joint hole oversized
(loose interference or
press fit)
Corroded, affecting structural integrity
Holes distorted
Threads damaged
Threads stripped (threads
missing)
if available; otherwise, replace control arm.
A Require replacement of part
with stripped threads, if
available; otherwise, replace
control arm.
Ð’ Require replacement.
Ð’ Require replacement.
Ð’ (1) Further inspection
required.
A Require replacement.
A Require replacement.
A .. Require repair or replacement.
A Require replacement.
(1) - If oversized ball joint is available, require
replacement of ball joint. If oversized ball joint is not available, require replacement of control arm.
DRAG LINKS
DRAG LINK INSPECTION
Condition
Code
Procedure
Attaching hardware
incorrect A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware threads stripped
(threads missing) A
Bent B
Binding A
Grease boot cracked 2
Grease boot missing 2
Grease boot torn 2
Grease fitting broken ... A
Require replacement of
incorrect part, if available; otherwise, replace drag link.
Require repair or replacement
of loose part, if available;
otherwise, replace drag link.
Require replacement of missing
part, if available; otherwise,
replace drag link.
Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace drag link.
Require replacement of part
with stripped threads, if
available; otherwise, replace
drag link.
Require replacement.
(1) Further inspection
required.
.... (2) Suggest replacement.
.... (3) Suggest replacement.
.... (4) Suggest replacement.
Require replacement of grease
fitting.
Grease fitting missing . .
Grease fitting
won’t seal
Grease seal missing
Grease seal torn
Looseness (perceptible
horizontal movement) ... Looseness that is
excessive
Seized
Stud bent
Stud broken
Stud loose in
taper hole
Taper hole elongated
Threads damaged
Threads stripped (threads
missing)
Wear exceeds
manufacturer’ s
specifications
С ... Require replacement of grease
fitting.
A ... Require replacement of grease
fitting.
2 (5) Suggest replacement.
2 (4) Suggest replacement.
1 (6) Suggest replacement.
Ð’ (6)(7) Require replacement.
A Require replacement.
Ð’ (8) Require replacement.
A (8) Require replacement.
A (8) Require repair or
replacement.
A (9) Require replacement.
A .. Require repair or replacement.
A (8) Require replacement.
Ð’ Require replacement.
(1) -
If greaseable, grease joint. If problem persists or joint is non-greaseable, require replacement.
(2) - Cracked grease boot will allow contaminants to enter
the joint and will accelerate wear.
(3) - Lack of grease boot will allow contaminants to enter
the joint and will accelerate wear.
(4) - Torn grease boot will allow contaminants to enter the
joint and will accelerate wear.
(5) - Missing grease seal will allow contaminants to enter
the joint and will accelerate wear.
(6) - If manufacturer’s procedures for inspection exist, use
those procedures; otherwise, use an approved inspection method such as the dry park check.
CAUTION: DO NOT use pliers or pry bar to check ball and socket movement. Use only moderate hand pressure.
(7) - Excessive looseness is defined as being significant
enough to affect vehicle handling or structural integrity.
- Check for damaged taper hole.
- Check for damaged stud.
ELECTRONIC RIDE CONTROL SHOCKS AND STRUTS
NOTE: This section covers the electronic damping control portion of the electronic shock or strut. For dampening portion of shock or strut conditions and procedures, refer to the SHOCK ABSORBERS, STRUT CARTRIDGES AND STRUT ASSEMBLIES section.
ELECTRONIC RIDE CONTROL SHOCK AND STRUT INSPECTION
Code
Condition
Connector bent A
Connector broken A
Connector loose A
Electronic valve control
Procedure
Require repair or replacement. Require repair or replacement. Require repair or replacement.
inoperative 2
Terminal bent A
Terminal broken A
Terminal corroded A
Terminal loose A
(1) Suggest replacement.
Require repair or replacement. Require repair or replacement. Require repair or replacement. Require repair or replacement.
(1) - It is acceptable to replace with a non-electronically controlled unit, where available.
IDLER ARMS
IDLER ARM INSPECTION
Condition
Code
Procedure
Attaching hardware
broken A
Attaching hardware
incorrect A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware threads stripped
(threads missing) A
Binding A
Grease boot cracked 2
Grease boot missing 2
Grease boot torn 2
Grease fitting broken ... A
Grease fitting missing .. R
Grease fitting
won’t seal A
Grease seal missing 2
Grease seal torn 2
Greaseable joint will not
take grease 2
Looseness at frame
bracket end B
Require replacement of broken
part, if available; otherwise,
replace idler arm.
Require replacement of
incorrect part, if available; otherwise, replace idler arm.
Require repair or replacement
of loose part, if available;
otherwise, replace idler arm.
Require replacement of missing
part, if available; otherwise,
replace idler arm.
Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace idler arm.
Require replacement of part
with stripped threads, if
available; otherwise, replace
idler arm.
(1) Further inspection
required.
.... (2) Suggest replacement.
.... (3) Suggest replacement.
.... (4) Suggest replacement.
Require replacement of grease
fitting.
Require replacement of grease
fitting.
Require replacement of grease
fitting.
.... (5) Suggest replacement. .... (4) Suggest replacement.
(1) Suggest replacement of grease fitting.
.... (6)(7) Require repair or replacement.
Looseness at link end
(perceptible horizontal
movement)
Looseness at link end
that is excessive
Mounted out of position
(center link
not parallel)
Nut on stud loose
Seized
Stud bent
Stud broken
Taper hole elongated
Threads damaged
Threads stripped (threads
missing)
Wear exceeds
manufacturer’ s
specifications
1 (8) Suggest replacement.
Ð’ (8)(9) Require replacement.
Ð’ Require repositioning.
A (10) Require repair or
replacement.
A Require replacement.
Ð’ (11) Require replacement.
A (11) Require replacement.
A (12) Require replacement.
A .. Require repair or replacement.
A (11) Require replacement.
Ð’ Require replacement.
(1) -
If greaseable, grease joint. If problem persists or joint is non-greaseable, require replacement.
(2) - Cracked grease boot will allow contaminants to enter
joint and will accelerate wear.
(3) - Lack of grease boot will allow contaminants to enter
joint and will accelerate wear.
(4) - Torn grease boot will allow contaminants to enter
joint and will accelerate wear.
(5) - Missing grease seal will allow contaminants to enter
joint and will accelerate wear.
(6) - If manufacturer’s procedures and specifications exist,
use those procedures and specifications; otherwise, use an approved inspection method such as the dry park check.
(7) - Looseness is defined as movement that creates excessive
toe change.
(8) - If manufacturer’s procedures for inspection exist, use
those procedures; otherwise, use an approved inspection method such as the dry park check.
CAUTION: DO NOT use pliers or pry bar to check ball and socket movement. Use only moderate hand pressure.
(9) - Excessive looseness is defined as significant enough
to affect vehicle handling or structural integrity.
- Check for bent stud or damaged taper hole.
- Check for damaged taper hole.
- Check for damaged stud.
KING PINS
You are not required to replace king pins in axle sets. However, when replacing a king pin due to wear exceeding manufacturer’s specifications, you may suggest replacement of the other king pin on the axle if its measurement shows it is close to the end of its useful life.
KING PIN INSPECTION
Code
Condition
Bearing balls pitted
Bearing balls worn
Bearing races pitted
Procedure
A Require replacement.
A Require replacement.
A Require replacement.
Bearing races worn A
Bearing rollers pitted .. A
Bearing rollers worn .... A
Bearing seal bent 2
Bearing seal missing .... 2
Bearing seal torn 2
Binding A
End caps missing C
End play exceeds
specifications B
Grease fitting broken ... A
С
A С
Grease fitting missing
Grease fitting
won’t seal
Locating pins missing
Looseness exceeds
manufacturer’ s
specifications B
Seized A
Threads damaged A
Threads stripped (threads
missing) A
Will not take grease .... 2
Require replacement.
Require replacement.
Require replacement.
Suggest replacement of seal or
bearing.
Suggest replacement of seal or
bearing.
Suggest replacement of seal or
bearing.
Require repair or replacement
of affected parts.
Require replacement of missing
part, if available; otherwise,
replace king pin.
Require repair.
Require replacement of grease
fitting. Require replacement of grease
fitting.
Require replacement of grease
fitting.
Require replacement of missing
part, if available; otherwise,
replace king pin.
.. Require replacement of worn
parts.
Require replacement.
Require repair or replacement.
.... Require replacement.
(1) Suggest replacement of
grease fitting.
(1) - If king pin will not take grease after replacement of grease fitting, suggest replacement of king pin.
PITMAN ARMS
PITMAN ARM INSPECTION
Condition Code Procedure
Attaching hardware
incorrect A Require replacement of
incorrect part, if available; otherwise, replace pitman arm. Attaching hardware
loose A ... Require repair or replacement
of loose part, if available; otherwise, replace pitman arm. Attaching hardware
missing C . . Require replacement of missing
part, if available; otherwise, replace pitman arm. Attaching hardware
threads damaged A ... Require repair or replacement
of part with damaged threads, if available; otherwise,
Attaching hardware
threads stripped
(threads missing)
Bent
Binding
Grease boot cracked
Grease boot missing
Grease boot torn
Grease fitting broken
Grease fitting missing . .
Grease fitting
won’t seal
Grease seal missing
Grease seal torn
Looseness (perceptible horizontal movement)
Looseness that is
excessive
Nut on stud loose
Seized
Splines damaged
Splines stripped
(splines missing)
Stud bent
Stud broken
Stud loose in
taper hole
Taper hole elongated
Threads damaged
Threads stripped (threads
missing)
replace pitman arm.
A Require replacement of part
with stripped threads, if
available; otherwise, replace
pitman arm.
Ð’ Require replacement.
A (1) Further inspection
required.
2 (2) Suggest replacement.
2 (3) Suggest replacement.
2 (4) Suggest replacement.
A Require replacement grease
fitting.
С ... Require replacement of grease
fitting.
A ... Require replacement of grease
fitting.
2 (3) Suggest replacement
of seal.
2 (4) Suggest replacement
of seal.
1 (5) Suggest replacement.
Ð’ (5)(6) Require replacement.
A (7) Require repair or
replacement.
A Require replacement.
A .. Require repair or replacement.
A Require replacement.
Ð’ (8) Require replacement.
A (8) Require replacement.
A (8) Require repair or
replacement.
A (9) Require replacement.
A .. Require repair or replacement.
A (8) Require replacement.
(1) -
If greaseable, grease joint. If problem persists or joint is non-greaseable, require replacement.
(2) - Cracked grease boot will allow contaminants to enter
joint and will accelerate wear.
(3) - Lack of grease boot will allow contaminants to enter
joint and will accelerate wear.
(4) - Torn grease boot will allow contaminants to enter joint
and will accelerate wear.
(5) - If manufacturer’s procedures for inspection exist, use
those procedures; otherwise, use an approved inspection method such as the dry park check.
CAUTION: DO NOT use pliers or pry bar to check ball and socket movement. Use only moderate hand pressure.
(6) - Excessive looseness is defined as being significant
enough to affect vehicle handling or structural integrity.
- Check for bent stud of damaged taper hole.
- Check for damaged taper hole.
- Check for damaged stud.
POWER STEERING HOSES
POWER STEERING HOSE INSPECTION
Code
Condition
Blistered B
Blocked A
Fitting threads damaged . A Fitting threads stripped
(threads missing) A
Inner fabric
(webbing) cut A
Leaking A
Missing C
Outer covering is cracked
to the extent that
the inner fabric of
hose is visible B
Restricted A
Procedure
Require replacement.
Require repair or replacement.
Require repair or replacement.
Require replacement.
Require replacement.
Require repair or replacement.
Require replacement.
Require replacement.
Require repair or replacement.
POWER STEERING (HYDRAULIC) PUMPS
If diagnosis has determined that complete disassembly is necessary to determine the extent of the system failure, the suggestion may be made to rebuild or replace the power steering pump. Repair or replacement of the following components may be required if performed as part of a power steering pump overhaul or rebuild service to meet a minimum rebuild standard.
POWER STEERING (HYDRAULIC) PUMP INSPECTION
Condition |
Code |
|
Attaching |
hardware bent |
. B |
Attaching broken |
hardware |
A |
Attaching hardware
loose
Attaching hardware
missing
Attaching hardware threads damaged
Attaching hardware threads stripped (threads missing)
Belt alignment
incorrect
Belt cracked Belt frayed Belt missing Belt noisy
Belt plies separated
Procedure
Require repair or replacement of bent part.
Require replacement of broken
part.
A
Require repair or replacement of loose part.
Require replacement of missing
part.
Require repair or replacement of part with damaged threads.
A Require replacement of part
with stripped threads.
(1)
Ð’
Further inspection
required.
1 Suggest replacement.
1 Suggest replacement.
С Require replacement.
2 (2) Further inspection
required.
A Require replacement.
Pulley bent A
Belt tension out of specification
Belt worn beyond
adjustment range
Belt worn so it contacts
bottom of pulley
Binding
Fluid at or beyond
service interval
Fluid contaminated
Fluid level incorrect
Inadequate assist
Leaking Noise
Pulley missing
Remote reservoir
leaking
Reservoir cap broken Reservoir cap missing
Seized
Threads damaged
Threads stripped (threads missing)
Ð’ Require adjustment or
replacement.
Ð’ Require replacement.
A Require replacement.
A .. Require repair or replacement.
3 Suggest fluid change.
Ð’ (3) Require flushing and
refilling of the system.
Ð’ Require adjustment of fluid
level.
A (4) Further inspection
required. A .. Require repair or replacement.
2 (5) Further inspection
required.
Require repair or replacement
of pulley. Require replacement of pulley.
A Require replacement of
reservoir,
A Require replacement of cap.
С Require replacement of cap.
A Require replacement.
A .. Require repair or replacement.
A Require replacement.
-
-
-
-
-
Determine cause of incorrect alignment and require repair.
Determine cause of noise and suggest repair.
Determine and correct source of contamination. OEM
specifications must be followed for fluid type.
If pump is source of inadequate assist, require
repair or replacement.
If noise is isolated to pump, suggest repair or
replacement.
RADIUS ARMS
RADIUS ARM INSPECTION
Condition
Code
Procedure
Attaching hardware
broken A ... Require replacement of broken
part. Attaching hardware
incorrect A Require replacement of
incorrect part. Attaching hardware
loose A ... Require repair or replacement
of loose part. Attaching hardware
missing C . . Require replacement of missing
part. Attaching hardware
threads damaged A ... Require repair or replacement
of part with damaged threads.
Attaching hardware
threads stripped
(threads missing) A
Bent B
Corroded, affecting
structural integrity ... A
Holes distorted A
Threads damaged A
Threads stripped
(threads missing) A
Require replacement of part
with stripped threads.
Require replacement.
Require replacement.
Require replacement.
Require repair or replacement.
Require replacement.
RELAY RODS
RELAY ROD INSPECTION
Condition
Code
Procedure
Attaching hardware
incorrect A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware threads stripped
(threads missing) A
Bent B
Binding A
Grease boot cracked 2
Grease boot missing 2
Grease boot torn 2
Grease fitting broken ... A
С
Grease fitting missing
Grease fitting
won’t seal A
Grease seal missing 2
Grease seal torn 2
Looseness (perceptible
horizontal movement) ... 1
Looseness that is
excessive B
Seized A
Stud bent B
Require replacement of
incorrect part, if available; otherwise, replace relay rod.
Require repair or replacement
of loose part, if available;
otherwise, replace relay rod.
Require replacement of missing
part, if available; otherwise,
replace relay rod.
Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace relay rod.
Require replacement of part
with stripped threads, if
available; otherwise, replace
relay rod.
Require replacement.
(1) Further inspection
required.
.... (2) Suggest replacement.
.... (3) Suggest replacement.
.... (4) Suggest replacement.
Require replacement grease
fitting.
Require replacement of grease
fitting.
Require replacement of grease
fitting.
.... (3) Suggest replacement. .... (4) Suggest replacement.
.... (5) Suggest replacement.
(5)(6) Require replacement.
Require replacement.
.... (7) Require replacement.
Stud loose in
taper hole A (7) Require repair or
replacement.
Taper hole elongated .... A (8) Require replacement.
Threads damaged A .. Require repair or replacement.
Threads stripped (threads
missing) A (7) Require replacement.
Wear exceeds
manufacturer’ s
specifications B Require replacement.
(1) - If greaseable, grease joint. If problem persists or
joint is non-greaseable, require replacement.
(2) - Cracked grease boot will allow contaminants to enter
the joint and will accelerate wear.
(3) - Lack of grease boot will allow contaminants to enter
the joint and will accelerate wear.
(4) - Torn grease boot will allow contaminants to enter the
joint and will accelerate wear.
(5) - If manufacturer’s procedures for inspection exist, use
those procedures; otherwise, use an approved inspection method such as the dry park check. CAUTION: DO NOT use pliers or pry bar to check ball and
socket movement. Use only moderate hand pressure.
(6) - Excessive looseness is defined as being significant
enough to affect vehicle handling or structural integrity.
- Check for damaged taper hole.
- Check for damaged stud.
SHOCK ABSORBERS, STRUT CARTRIDGES AND STRUT ASSEMBLIES
You are not required to replace shocks or struts in axle sets. However, when replacing a shock or strut due to the conditions that follow, you may suggest replacement of the other shock or strut on the same axle for improved performance and preventive maintenance.
Part is close to the end of its useful life
To extend tire life
To balance ride and handling
To improve stopping distance
When replacing steering and/or suspension components which may affect an alignment angle, you are required to check and adjust alignment as needed. Refer to the OEM specifications.
Under no circumstances should a technician bend struts or strut housings.
A vehicle’s load-carrying and handling abilities are limited by its suspension, tires, brakes, and driveline. Installing coil over shocks or any other load assist device does not increase the vehicle’s load capacity. See the vehicle owner’s manual for more details.
NOTE: If vehicle is equipped with original equipment coil over shocks, apply the conditions for coil springs from the SPRINGS - COIL, LEAF AND TORSION BAR section of the STEERING AND SUSPENSION guidelines. If the vehicle is equipped with add-on coil over shocks, you may suggest replacing the shocks with standard shocks for any spring-related condition.
SHOCK ABSORBER, STRUT CARTRIDGE AND STRUT ASSEMBLY INSPECTION
Condition Code
Attaching hardware bent . B
Attaching hardware
broken
Attaching hardware corroded, affecting structural integrity
Attaching hardware
incorrect
A
Attaching hardware
loose
A
A
Attaching hardware
missing
Attaching hardware threads damaged
Attaching hardware
threads stripped
(threads missing) A
Binding A
Body dented A
Body punctured A
Brake hose bracket
bent B
Brake hose bracket
missing C
Brake hose bracket
threads damaged A
Brake hose bracket
threads stripped
(threads missing) C
Compression bumper
missing C
Compression bumper
split 1
Damping (none) A
Dust boot (bellows)
split 2
Procedure
Require repair or replacement of bent part, if available; otherwise, replace shock or
strut.
Require replacement of broken
part, if available; otherwise,
replace shock or strut.
Require replacement of corroded
part, if available; otherwise,
replace shock or strut.
Require replacement of
incorrect part, if available; otherwise, replace shock or
strut.
Require repair or replacement
of loose part, if available;
otherwise, replace shock or
strut.
Require replacement of missing
part, if available; otherwise,
replace shock or strut.
Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace shock or strut.
Require replacement of part
with stripped threads, if
available; otherwise, replace
shock or strut.
Require replacement.
(1) Further inspection
required.
Require replacement.
Require repair or replacement.
Require replacement.
Require repair or replacement.
Require replacement.
Require replacement of compression bumper.
Suggest replacement of
compression bumper.
Require replacement.
(2) Suggest replacement of boot.
Strut housing cap (gland
nut) threads stripped
(threads missing) A Require replacement of nut.
Strut housing severely
corroded, affecting
structural integrity ... A Require replacement.
Strut housing threads
damaged A . . Require repair or replacement.
Strut housing threads
stripped (threads
missing) A Require replacement.
Tire cupping A (6) Further inspection
required.
Dust boot (bellows)
missing
Dust boot (bellows)
torn
Dust shield broken
Dust shield missing
Gland nut (strut housing cap) is not removable using appropriate tool
Gland nut (strut housing cap) threads damaged
Gland nut (strut housing
cap) threads stripped
(threads missing)
Housing dented
Housing punctured
Jounce bumper missing .. .
Jounce bumper split
Leaking oil, enough for
fluid to be running down
the body
Noise
Piston rod bent
Piston rod broken
Piston rod has surface
defect
Piston rod threads
damaged
Piston rod threads
stripped (threads
missing)
Seized
Shock missing
Strut housing bent
Strut housing cap (gland
nut) is not removable
using appropriate tool
Strut housing cap (gland nut) threads damaged
2 (2) Suggest replacement
of boot.
2 (2) Suggest replacement
of boot.
2 (2) Suggest replacement.
2 (2) Suggest replacement.
A .. (3) Require replacement of nut
and/or housing.
A ... Require repair or replacement
of nut.
A Require replacement of nut.
A (1) Further inspection
required.
A Require replacement.
С ... Require replacement of jounce
bumper. 1 ... Suggest replacement of jounce
bumper.
A (4) Require replacement.
2 (5) Further inspection
required.
A Require replacement.
A Require replacement.
2 Suggest replacement.
A .. Require repair or replacement.
A Require replacement.
A Require replacement.
С Require replacement.
A Require replacement.
A (3) Require replacement
of nut and/or housing.
A ... Require repair or replacement
of nut.
(1) - Require replacement of units where dents restrict shock
or strut piston rod movement. If dents don’t restrict movement, no service is suggested or required. Especially critical on mono-tube shocks.
(2) - This condition can lead to damage of the piston rod,
which, in turn, causes premature piston rod seal wear.
- Only required if replacing cartridge.
- CAUTION: If the strut cartridge has been replaced previously,
the oil on the strut housing may be filler oil. The technician must identify the source of the oil.
(5) - If noise is isolated to shock or strut, suggest
replacement.
(6) - Although shocks or struts may have contributed to tire
cupping, an inspection is needed of the entire suspension system. If the shock or strut is found to be contributing to the tire cupping, require replacement.
SPINDLES
SPINDLE INSPECTION
Condition
Code
Procedure
Attaching hardware
broken A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware
threads stripped
(threads missing) A
Bent B
Broken A
Race seat area
undersized B
Scored A
Threads damaged A
Threads stripped (threads
missing) A
Require replacement of broken
part.
Require repair or replacement of loose part.
Require replacement of missing
part.
Require repair or replacement of part with damaged threads.
Require replacement of part with stripped threads.
Require replacement.
Require replacement.
Require replacement.
Require repair or replacement. Require repair or replacement.
Require replacement.
SPRINGS - COIL, LEAF AND TORSION BAR
When springs are replaced, it is suggested, but not required, that both springs on an axle be replaced to maintain equal height from side to side and to provide a balanced ride and proper handling.
When variable rate springs are installed in place of conventional coil springs, they must be installed in axle sets to ensure proper handling, uniform ride, and proper chassis height.
Erroneous height measurements may result from: improper tire inflation, non-standard tire or wheel size, and heavy load in vehicle or trunk.
SPRING (COIL, LEAF AND TORSION BAR) INSPECTION
Condition Code Procedure
Attaching hardware
bent B .... Require repair or replacement
of bent part. Attaching hardware
broken A .... Require replacement of broken
part.
Attaching hardware corroded, affecting
structural integrity .. A .. Require replacement of corroded
part. Attaching hardware
incorrect A Require replacement of
incorrect part. Attaching hardware
loose A .... Require repair or replacement
of loose part. Attaching hardware
missing C ... Require replacement of missing
part. Attaching hardware
threads damaged A .... Require repair or replacement
of part with damaged threads. Attaching hardware threads stripped
(threads missing) A Require replacement of part
with stripped threads. Broken (all springs except secondary leave(s) on multi-leaf
springs) A Require replacement.
Coil clash (1) Require ride height check.
Coil spring insulator
deteriorated 2 Suggest replacement of
insulator. Coil spring insulator
missing 2 Suggest replacement of
insulator. Coil spring insulator
split 2 Suggest replacement of
insulator. Coil spring plastic coating deteriorated -
rust present A (2) Refer to manufacturer’s
service requirements. Composite spring
damaged (3) Further inspection
required.
Cracked (all springs except composite leaf and secondary leave(s) on
multi-leaf springs) ... A Require replacement.
Installed incorrectly .. B Require repair.
Leaf spring insulators
missing 2 Suggest replacement of
insulators.
Secondary leaf on multi-leaf spring broken .... 1 .... Suggest repair or replacement Secondary leaf on multi-leaf spring cracked ... 1 .... Suggest repair or replacement Torsion bar
adjuster bent A (4) Require repair or
replacement of adjuster. Torsion bar adjuster
seized A .... (4) Require repair or replacement
of adjuster. Torsion bar adjuster
threads damaged A .... (4) Require repair or replacement
of part with damaged threads. Torsion bar adjuster threads stripped
(threads missing) A Require replacement of part
with stripped threads. Vehicle suspension height not within OEM
specifications B Require adjustment or
replacement.
(1) - If vehicle is within manufacturer’s height
specifications, no service is suggested or required.
(2) - Some manufacturers require replacement under these
conditions.
(3) - Check vehicle ride height. If ride height is OK, no
service is suggested or required.
(4) - Only required if ride height needs to be adjusted.
STEEL POWER STEERING LINES
CAUTION: When replacing steel power steering lines, be sure to use a replacement product that meets or exceeds OEM design specifications.
STEEL POWER STEERING LINE INSPECTION
Condition Code Procedure
Attaching hardware
bent B ... Require repair or replacement
of bent part. Attaching hardware
broken A ... Require replacement of broken
part. Attaching hardware
loose A ... Require repair or replacement
of loose part. Attaching hardware
missing C . . Require replacement of missing
part. Attaching hardware
threads damaged A ... Require repair or replacement
of part with damaged threads. Attaching hardware threads stripped
(threads missing) A Require replacement of part
with stripped threads.
Blocked A . . Require repair or replacement.
Fitting incorrect (such as compression
fitting) B Require replacement.
Flare type incorrect .... B Required replacement.
Leaking A Require tightening or
replacement.
Line type incorrect B Require replacement.
Restricted A Require replacement.
Routed incorrectly B Require routing correction.
Rust-pitted 1 Suggest replacement.
Rust pitted, affecting
structural integrity .. A Require replacement.
STEERING ARMS
STEERING ARM INSPECTION
Condition
Code
Procedure
Attaching hardware
bent B
Attaching hardware
broken A
Attaching hardware
incorrect A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware
threads stripped
(threads missing) A
Bent B
Broken A
Taper hole elongated .... A
Threads damaged A
Threads stripped (threads
missing) A
(1) - Check for damaged stud.
Require repair or replacement of bent part.
Require replacement of broken
part.
Require replacement of incorrect part.
Require repair or replacement of loose part.
Require replacement of missing
part.
Require repair or replacement of part with damaged threads.
Require replacement of part with stripped threads.
Require replacement.
Require replacement.
(1) Require replacement.
Require repair or replacement.
Require replacement.
STEERING DAMPERS
The following procedures are only required if the vehicle was originally equipped from the factory with a steering damper. If the steering damper is an add-on unit, then the unit may be removed instead of repairing or replacing.
STEERING DAMPER INSPECTION
Condition Code
Attaching hardware bent . B
Attaching hardware
broken
Procedure
Require repair or replacement of bent part, if available; otherwise, replace steering
damper.
Require replacement of broken part, if available; otherwise,
replace steering damper. Attaching hardware corroded, affecting
structural integrity ... A . Require replacement of corroded
part, if available; otherwise, replace steering damper. Attaching hardware
incorrect A Require replacement of
incorrect part, if available; otherwise, replace steering
damper. Attaching hardware
loose A ... Require repair or replacement
of loose part, if available; otherwise, replace steering
damper. Attaching hardware
missing C . . Require replacement of missing
part, if available; otherwise, replace steering damper. Attaching hardware
threads damaged A ... Require repair or replacement
of part with damaged threads, if available; otherwise, replace steering damper. Attaching hardware threads stripped
(threads missing) A Require replacement of part
with stripped threads, if
available; otherwise, replace
steering damper.
Binding A Require replacement.
Damper body dented A (1) Further inspection
required.
Damper body punctured ... A Require replacement.
Damping (none) A Require replacement.
Dust boot (bellows)
missing 2 (2) Suggest replacement
of boot. Dust boot (bellows)
split 2 (2) Suggest replacement
of boot.
Dust shield broken 2 (2) Suggest replacement.
Dust shield missing 2 (2) Suggest replacement.
Leaking oil, enough for fluid to be running
down the body A Require replacement.
Loose A . . Require repair or replacement.
Missing C Require replacement.
Noise 2 (3) Further inspection
required.
Piston rod bent A Require replacement.
Piston rod broken A Require replacement.
Piston rod has surface
defect 2 Suggest replacement.
Piston rod threads stripped (threads
missing) A Require replacement.
Piston rod threads
damaged A . . Require repair or replacement.
Seized A Require replacement.
(1) - Require replacement of units where dents restrict damper
piston rod movement. If dents don’t restrict movement, no service is suggested or required. Especially critical on mono-tube dampers.
(2) - This condition can lead to damage of the piston rod,
which, in turn, causes premature piston rod seal wear.
(3) - If noise is isolated to damper, suggest replacement.
STEERING GEARS (EXCEPT RACK AND PINION)
If diagnosis has determined that complete disassembly is necessary to determine the extent of the system failure, the suggestion may be made to rebuild or replace the power steering pump. Repair or replacement of the following components may be required, if performed as part of a power steering pump overhaul or rebuild service to meet a minimum rebuild standard.
STEERING GEAR (EXCEPT RACK AND PINION) INSPECTION
Condition
Code
Procedure
Attaching hardware
broken A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware
threads stripped
(threads missing) A
Binding A
Flex coupler binding .... A
Flex coupler loose A
Flex coupler
missing parts A
Flex coupler
soft/spongy A
Flex coupler torn A
Fluid contaminated B
Gasket leaking A
Housing leaking A
Hydraulic fittings
leaking A
Inadequate power assist . A
Lash exceeds manufacturer’ s
specifications B
Seal leaking A
Require replacement of broken
part.
Require repair or replacement of loose part.
Require replacement of missing part.
Require repair or replacement of part with damaged threads.
Require replacement of part with stripped threads. Require repair or replacement Require repair or replacement of coupler.
Require repair or replacement of coupler.
Require repair or replacement of coupler.
Require replacement of coupler. Require replacement of coupler.
(1) Require flushing and
refilling of the system. Require repair or replacement
of gasket.
Require replacement.
Require repair or replacement of fittings.
(2) Further inspection
required. See note below.
Require repair or replacement. Require repair or replacement
(1) - Determine and correct source of contamination. OEM
specifications must be followed for fluid type.
(2) - If steering gear is source of inadequate assist, require
repair or replacement.
Splines damaged A
Splines stripped A
Steering coupler
shield cracked 2
Steering coupler
shield missing C
Threads damaged A
Threads stripped
(threads missing) A
U-joint binding A
U-joint loose A
Unequal power assist .... A
of seal and/or mating part.
Require repair or replacement
of splines.
Require replacement of splines.
Suggest replacement.
Require replacement.
Require repair or replacement of part with damaged threads.
Require replacement of part
with stripped threads.
Require repair or replacement
of joint.
Require repair or replacement
of joint. Require repair or replacement.
STEERING GEARS - RACK AND PINION
If diagnosis has determined that complete disassembly is necessary to determine the extent of the system failure, the suggestion may be made to rebuild or replace the power steering pump. Repair or replacement of the following components may be required, if performed as part of a power steering pump overhaul or rebuild service to meet a minimum rebuild standard.
STEERING GEARS - RACK AND PINION INSPECTION
Condition
Code
Procedure
Attaching hardware
broken A Require replacement of
broken part. Attaching hardware
loose A . . Require repair or replacement
of loose part. Attaching hardware
missing C Require replacement of
missing part. Attaching hardware
threads damaged A . . Require repair or replacement
of part with damaged threads. Attaching hardware threads stripped
(threads missing) A .... Require replacement of part
with stripped threads.
Balance tube blocked .... A .. Require repair or replacement
of balance tube.
Balance tube missing .... C .. Require replacement of balance
tube.
Balance tube restricted . A ... Require repair or replacement
of balance tube. Bellows boot
clamp missing C ... Require replacement of clamp.
Bellows boot cracked
2 С
(not through)
Bellows boot missing
Bellows boot
not sealing A
Bellows boot torn A
Bellows boot twisted
(from toe adjustment) .. R
Fitting leaking A
Fitting missing A
Fitting threads
damaged A
Fitting threads stripped
(threads missing) A
Flex coupler binding .... A
Flex coupler loose A
Flex coupler
missing parts A
Flex coupler
soft/spongy A
Flex coupler torn A
Fluid contaminated B
Gasket leaking A
Hard steering on cold
start-up 1
Housing cracked,
affecting structural
integrity B
Housing leaking A
Inadequate power assist . A
Lash exceeds
manufacturer’ s
specifications B
Seal leaking A
Splines damaged A
Splines stripped
(splines missing) A
Steel line blocked A
Steel line leaking A
Steel line missing C
Steel line restricted ... A
Steering coupler shield
cracked 2
Steering coupler shield
missing C
Steering coupler shield
torn 2
Threads damaged A
Suggest replacement of bellows
boot.
Require replacement of bellows
boot.
Require repair or replacement
of bellows boot.
Require replacement of bellows
boot.
Require repair.
Require repair or replacement. Require replacement of fitting.
Require repair or replacement of part with damaged threads.
Require replacement of part
with stripped threads.
Require repair or replacement
of coupler.
Require repair or replacement of coupler.
Require repair or replacement of coupler.
Require replacement of coupler. Require replacement of coupler.
(1) Require flushing and
refilling of the system. Require repair or replacement.
(2) Suggest repair or
replacement.
Require replacement.
Require replacement.
(3) Further inspection
required.
Require repair or replacement. Require repair or replacement. Require repair or replacement.
Require replacement.
Require repair or replacement
of line.
Require repair or replacement
of line.
Require replacement of line. Require repair or replacement
of line.
Suggest replacement.
Require replacement.
Suggest replacement.
Require repair or replacement of part with damaged threads.
Threads stripped
(threads missing) A Require replacement of part
with stripped threads.
U-joint binding A ... Require repair or replacement
of joint.
U-joint loose A ... Require repair or replacement
of joint. Unequal power assist .... A .. Require repair or replacement.
(1) - Determine and correct source of contamination. Follow OE
specifications for fluid type.
- Indicates internal wear.
- If steering gear is source of inadequate assist, require
repair or replacement.
STEERING KNUCKLES
STEERING KNUCKLE INSPECTION
Condition
Code
Procedure
Attaching hardware
bent
A
Attaching hardware
broken
A
Attaching hardware
incorrect
Attaching hardware
loose
С
Attaching hardware
missing
Attaching hardware
threads damaged A
A
Attaching hardware threads stripped (threads missing)
Bent B
Broken A
Pinch bolt incorrect .... B
Pinch bolt loose B
Pinch bolt missing B
Pinch bolt tabs
deformed (pinched
together), .032"
or more before
clamping B
Taper hole elongated .... A
Threads damaged A
Threads stripped (threads
missing) A
Require repair or replacement of bent part.
Require replacement of broken
part.
Require replacement of incorrect part.
Require repair or replacement of loose part.
Require replacement of missing
part.
Require repair or replacement of part with damaged threads.
Require replacement of part with stripped threads.
Require replacement.
Require replacement.
Require replacement with bolt that meets OE design.
Require repair.
Require replacement.
(1) Require replacement.
(2) Require replacement.
Require repair or replacement.
Require repair or replacement.
(1) - Steering knuckle deformation can cause pinch
bolt breakage.
(2) - Check for damaged stud.
STRIKE OUT BUMPERS
STRIKE OUT BUMPER INSPECTION
Condition Code
Attaching hardware
broken A
Attaching hardware corroded, affecting structural integrity ... A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware
threads stripped
(threads missing) A
Missing C
Split 1
Procedure
Require replacement of
broken part.
Require replacement of
corroded part.
Require repair or replacement of loose part.
Require replacement of
missing part.
Require repair or replacement of part with damaged threads.
Require replacement of part with stripped threads.
Require replacement.
Suggest replacement.
STRUT RODS
STRUT ROD INSPECTION
Condition Code
Adjusting nut seized .... A
Attaching hardware
bent B
Attaching hardware
broken A
Attaching hardware
incorrect A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Procedure
1) Require repair or replacement.
Require repair or replacement
of bent part, if available;
otherwise, replace strut rod.
Require replacement of broken
part, if available; otherwise,
replace strut rod.
Require replacement of
incorrect part, if available; otherwise, replace strut rod.
Require repair or replacement
of loose part, if available;
otherwise, replace strut rod.
Require replacement of missing
part, if available; otherwise,
replace strut rod.
Require repair or replacement of part with damaged threads,
if available; otherwise, replace strut rod. Attaching hardware threads stripped
(threads missing) A Require replacement of part
with stripped threads, if available; otherwise, replace
strut rod. Attaching (mating) hole
oversized A ... Require repair or replacement
of frame.
Attaching point on frame corroded, affecting
structural integrity ... A Require repair of frame.
Bent A Require replacement.
Mating (attaching) hole
oversized A ... Require repair or replacement
of frame.
Threads damaged A .. Require repair or replacement.
Threads stripped
(threads missing) A Require replacement.
(1) - Only required if an alignment is being performed.
STRUT UPPER BEARING PLATE ASSEMBLIES
NOTE: When the following guidelines indicate replacement of bearing, only the bearing should be replaced if it is available separately; otherwise, replace the bearing plate assembly.
STRUT UPPER BEARING PLATE ASSEMBLY INSPECTION
Condition Code Procedure
Attaching hardware
broken A ... Require replacement of broken
part, if available; otherwise, replace bearing plate assembly. Attaching hardware
loose A ... Require repair or replacement
of loose part, if available; otherwise, replace bearing plate assembly. Attaching hardware
missing C . . Require replacement of missing
part, if available; otherwise, replace bearing plate assembly. Attaching hardware
threads damaged A ... Require repair or replacement
of part with damaged threads, if available; otherwise, replace bearing plate assembly. Attaching hardware threads stripped
(threads missing) A Require replacement of part
with stripped threads, if available; otherwise, replace bearing plate assembly. Bearing axial or radial movement exceeds vehicle manufacturer’ s
specifications B
Bearing binding A
Bearing missing C
Bearing seized A
Bent B
Holes distorted A
Missing C
Severely corroded, affecting structural
integrity A
Require replacement
of bearing.
Require replacement
of bearing.
Require replacement
of bearing.
Require replacement
of bearing.
Require replacement.
Require replacement.
Require replacement.
Require replacement.
SWAY BAR LINKS
SWAY BAR LINK INSPECTION
Condition
Code
Procedure
Attaching hardware
incorrect A
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
A
Attaching hardware threads stripped (threads missing)
Ball and socket has looseness (perceptible
vertical movement) 1
Ball and socket has looseness that is
excessive B
Bent B
Broken A
Corroded, affecting
structural integrity ... A
Grease boot cracked 2
Grease boot missing 2
Grease boot torn 2
Missing C
Nut on stud loose A
Stud bent B
Stud broken A
Threads damaged A
Require replacement of
incorrect part, if available; otherwise, replace link.
Require repair or replacement
of loose part, if available;
otherwise, replace link.
Require replacement of missing
part, if available; otherwise,
replace link.
Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace link.
Require replacement of part
with stripped threads, if
available; otherwise, replace
link.
(1) Suggest replacement.
(1)(2) Require replacement.
Require replacement.
Require replacement.
Require replacement.
(3) Suggest replacement.
(4) Suggest replacement.
(5) Suggest replacement.
Require replacement.
(6) Require repair.
(7) Require replacement.
(7) Require replacement.
Require repair or replacement.
Threads stripped (threads
missing)
A
(7) Require replacement.
(1) - If manufacturer’s procedures for inspection exist, use
those procedures; otherwise, use an approved inspection
method such as the dry park check. CAUTION: DO NOT use pliers or pry bar to check ball and
socket movement. Use only moderate hand pressure.
(2) -
Excessive looseness is defined as being significant
enough to affect vehicle handling or structural
-
-
-
(6) (7)
integrity.
Cracked grease boot will allow contaminants to enter
the joint and will accelerate wear.
Lack of grease boot will allow contaminants to enter
the joint and will accelerate wear.
Torn grease boot will allow contaminants to enter the
joint and will accelerate wear.
Check for bent stud or damaged taper hole.
Check for damaged taper hole.
SWAY BARS
SWAY BAR INSPECTION
Code
Condition
Attaching hardware
broken
A
Attaching hardware corroded, affecting structural integrity
Attaching hardware
loose A
Attaching hardware
missing C
Attaching hardware
threads damaged A
Attaching hardware
threads stripped
(threads missing) A
Bent B
Broken A
Threads damaged A
Threads stripped
(threads missing) A
Procedure
Require replacement of broken
part, if available; otherwise,
replace sway bar.
Require replacement of
corroded part, if available; otherwise, replace sway bar.
Require repair or replacement of loose part, if available; otherwise, replace sway bar.
Require replacement of missing
part, if available; otherwise,
replace sway bar.
Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace sway bar.
Require replacement of part
with stripped threads, if
available; otherwise, replace
sway bar.
Require replacement.
Require replacement.
Require repair or replacement.
Require replacement.
TIE ROD ENDS (INNER AND OUTER)
TIE ROD END (INNER AND OUTER) INSPECTION
Condition
Code
Procedure
Attaching hardware
incorrect
Attaching hardware
loose
Attaching hardware
missing
Attaching hardware threads damaged
A
Attaching hardware threads stripped (threads missing)
Adjusting sleeve bent ... B
Adjusting sleeve clamps
out of position B
Adjusting sleeve corroded, affecting structural integrity ... A
Adjusting sleeve
missing C
A
Adjusting sleeve
seized
Adjusting sleeve
threads damaged A
Adjusting sleeve
threads stripped
(threads missing) A
Binding A
2 2 2 A
Grease boot cracked Grease boot missing
Grease boot torn
Grease fitting broken
Grease fitting missing
A 2
Grease fitting
won’t seal
Grease seal missing
Require replacement of
incorrect part, if available; otherwise, replace tie rod end.
Require repair or replacement
of loose part, if available;
otherwise, replace tie rod end.
Require replacement of missing
part, if available; otherwise,
replace tie rod end.
Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace tie rod end.
Require replacement of part
with stripped threads, if
available; otherwise, replace
tie rod end.
Require replacement of sleeve or tie rod end.
Require repair.
Require replacement of sleeve or tie rod end.
Require replacement of sleeve or tie rod end.
1) Require repair or replacement.
Require repair or replacement of sleeve or tie rod end.
Require replacement of sleeve or tie rod end.
(2) Further inspection
required.
.... (3) Suggest replacement.
.... (4) Suggest replacement.
.... (5) Suggest replacement.
Require replacement of grease
fitting.
Require replacement of grease
fitting.
Require replacement of grease
fitting.
(4) Suggest replacement
of seal.
Grease seal torn 2 (5) Suggest replacement
of seal. Greaseable tie rod end
won’t take grease 2 (6) Suggest replacement of
grease fitting. Looseness (perceptible
horizontal movement) ... 1 (7) Suggest replacement.
Looseness exceeds
manufacturer’ s
specifications B Require replacement.
Looseness that is
excessive B (7)(8) Require replacement.
Nut on stud loose A (9) Require repair or
replacement of nut.
Seized A Require replacement
Stud bent B (10) Require replacement.
Stud broken A (10) Require replacement.
Threads damaged A .. Require repair or replacement.
Threads stripped
(threads missing) A (10) Require replacement.
- Only required if toe needs to be adjusted.
- If greaseable, grease joint. If problem persists or
joint is non-greaseable, require replacement.
(3) - Cracked grease boot will allow contaminants to enter
joint and will accelerate wear.
(4) - Lack of grease boot will allow contaminants to enter
joint and will accelerate wear.
(5) - Torn grease boot will allow contaminants to enter joint
and will accelerate wear.
(6) - If greaseable tie rod end will not take grease after
replacing the grease fitting, suggest replacement of tie rod end.
(7) - If manufacturer’s procedures for inspection exist, use
those procedures; otherwise, use an approved inspection method such as the dry park check.
CAUTION: DO NOT use pliers or pry bar to check ball and socket movement. Use only moderate hand pressure.
(8) - Excessive looseness is defined as being significant enough
to affect vehicle handling or structural integrity.
(9) - Check for bent stud or damaged taper hole.
(10) - Check for damaged taper hole.
TRACK BARS
TRACK BAR INSPECTION
Condition Code Procedure
Attaching hardware
incorrect A Require replacement of
incorrect part, if available; otherwise, replace track bar. Attaching hardware
loose A ... Require repair or replacement
of loose part, if available; otherwise, replace track bar. Attaching hardware
missing C . . Require replacement of missing
part, if available; otherwise, replace track bar. Attaching hardware
threads damaged A
Attaching hardware
threads stripped
(threads missing)
Bent
Corroded, affecting structural integrity
Grease boot cracked
Grease boot missing
Grease boot torn
Holes distorted
Looseness (perceptible horizontal movement)
Looseness that is
excessive
Nut on stud loose
Seized
Stud bent
Stud broken
Threads damaged
Threads stripped (threads
missing)
Wear exceeds
manufacturer’ s
specifications
Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace track bar.
A Require replacement of part
with stripped threads, if available; otherwise, replace
track bar.
Ð’ Require replacement.
A Require replacement.
2 (1) Suggest replacement.
2 (2) Suggest replacement.
2 (3) Suggest replacement.
A Require replacement.
1 (4) Suggest replacement.
Ð’ (4)(5) Require replacement.
A (6) Require repair or
replacement of nut.
A Require replacement.
Ð’ (7) Require replacement.
A (7) Require replacement.
A .. Require repair or replacement.
A (7) Require replacement.
Ð’ Require replacement.
(1) -
Cracked grease boot will allow contaminants to enter joint and will accelerate wear.
(2) - Lack of grease boot will allow contaminants to enter
joint and will accelerate wear.
(3) - Torn grease boot will allow contaminants to enter joint
and will accelerate wear.
(4) - If manufacturer’s procedures for inspection exist, use
those procedures; otherwise, use an approved inspection method such as the dry park check.
CAUTION: DO NOT use pliers or pry bar to check ball and socket movement. Use only moderate hand pressure.
(5) - Excessive looseness is defined as being significant
enough to affect vehicle handling or structural integrity.
- Check for bent stud or damaged taper hole.
- Check for damaged taper hole.
TRAILING ARMS
TRAILING ARM INSPECTION
Condition
Attaching hardware
broken
Attaching hardware
loose
Code Procedure
A ... Require replacement of broken
part, if available; otherwise,
replace trailing arm.
A ... Require repair or replacement of loose part, if available;
Attaching hardware
missing
Attaching hardware threads damaged
Attaching hardware
threads stripped
(threads missing) A
Bent B
Bushing hole oversized .. R
Corroded, affecting
structural integrity ... A
Holes distorted A
Threads damaged A
Threads stripped
(threads missing) A
otherwise, replace trailing
arm.
Require replacement of missing
part, if available; otherwise,
replace trailing arm.
Require repair or replacement
of part with damaged threads,
if available; otherwise,
replace trailing arm.
Require replacement of part
with stripped threads, if
available; otherwise, replace
trailing arm.
Require replacement.
Require replacement.
Require replacement.
Require replacement.
Require repair or replacement.
Require replacement.
WHEEL BEARINGS, RACES AND SEALS
NOTE: When replacing or repacking wheel bearings, grease seal replacement is required. You are not required to replace these components in axle sets. Determine the need to replace based upon the individual component conditions that follow.
WHEEL BEARING, RACE AND SEAL INSPECTION
Condition Code
Rear axle seal on rear-wheel drive leaking .... A
Seal bent 1
Seal leaking A
Seal missing C
Seal torn A
Wheel bearing
assembly feels rough
when rotated A
Wheel bearing balls
are pitted A
A
Wheel bearing balls
are worn
Wheel bearing end-play
exceeds vehicle
manufacturer’s
specifications
Procedure
Require replacement of seal
and inspection of axle,
bearing, housing,
and vent tube.
Suggest replacement.
Require replacement of seal and inspection of bearings.
Require replacement.
Require replacement.
Require replacement of bearing
assembly.
Require replacement of bearing
assembly.
Require replacement of bearing
assembly.
Require adjustment of bearing,
if possible. If proper adjustment cannot be obtained, require repair or replacement of worn component. Wheel bearing race is loose in the
hub bore A Require replacement of hub
assembly and wheel bearings. Wheel bearing races
are pitted A .. Require replacement of bearing
assembly. Wheel bearing races
are worn A . . Require replacement of bearing
assembly. Wheel bearing rollers
are pitted A .. Require replacement of bearing
assembly. Wheel bearing rollers
are worn A . . Require replacement of bearing
assembly.
WHEEL ALIGNMENT
WHEEL ALIGNMENT
Wheel alignment is defined as the measurement, analysis, and adjustment of steering and suspension angles to conform to OEM specifications. These angles usually include, but are not limited to: caster, camber, toe, and thrust angle. Where these angles are not adjustable and not in specification, component replacement or correction kits may be required. Errors in set-back and steering axis inclination (SAI) are often attributable to failed or damaged components and must be corrected prior to performing an alignment.
Failure to replace or correct suggested parts or service may prevent a proper alignment.
Before performing an alignment check, inspect and verify the following:
Tire pressure and size
Vehicle loading
Ride height
Steering and suspension parts
If the inspection reveals that all the above are within published specifications, a wheel alignment check and an alignment, if needed, may be performed.
CAUTION: Under no circumstances should a technician bend or heat
any steering or suspension component, unless specified by the vehicle manufacturer, for example, Ford forged twin "I" beam axles. All measurements and specifications must be noted on the inspection report.
WHEEL ALIGNMENT INSPECTION
Condition Code Procedure
Dog tracking, shown
to be caused by
faulty alignment 2 Suggest repair.
Lead, shown to
be caused by
faulty alignment
Part has been changed,
affecting alignment Pull, shown to be caused
by faulty alignment . . . Steering wheel
off-center
Tire wear, shown
to be caused by
faulty alignment
Wander, shown
to be caused by
faulty alignment
A Require alignment.
A Require alignment check.
A Require alignment.
2 Suggest alignment.
A Require alignment.
A Require alignment.
WHEELS AND TIRES
TIRES
These guidelines do not apply to split rims. Some vehicle manufacturers restrict replacement of tires to specific brands, types, or sizes.
WARNING: High pressure temporary compact spare tires should not be used with any other rims or wheels, nor should standard tires, snow tires, wheel covers, or trim rings be used with high pressure compact spare rims or wheels. Attempting to mount a tire of one diameter on a wheel of a different diameter or flange type may result in serious injury or death.
WARNING: Only specially trained persons should dismount or mount tires. Explosions of tire and wheel assembly can result from improper mounting, possibly causing serious injury or death.
WARNING: Consult the vehicle owner’s manual or vehicle placard for correct size, speed rating, designation, and cold inflation pressure of the original tires. DO NOT exceed the maximum load or inflation capacity of the tire specified by the Tire and Rim Association
WARNING: When replacing tires, it is suggested that the
replacement tires match or exceed the OEM speed rating designation. If tires of different speed rating designations are mixed on the same vehicle, the tires may vary in handling characteristics. DO NOT mix different speed rating designations on the same axle.
WARNING: DO NOT mix radials with non-radial tires on the same
axle, as this may affect vehicle handling and stability. If radial tires and bias or bias-belted ply tires are mixed on the same vehicle, the radials must be on the rear. High-pressure temporary compact spare tires are exempt from this rule.
WARNING: DO NOT mix size or type (all season, performance, mud and snow) of tires on the same axle.
TIRE INSPECTION
Condition Code Procedure
Air pressure incorrect . . B Require repair
Bead broken A Require replacement.
Bead leaking, caused
by tire A . . Require repair or replacement.
Bead wire/cord exposed .. A Require replacement.
Cord or belt material
exposed A Require replacement.
Cord ply separations .... A Require replacement.
Directional/asymmetrical
tires mounted
incorrectly B Require remounting and/or
repositioning. Irregular tread wear,
affecting performance .. 2 (1) Suggest replacement.
Load ratings less
than OEM
specifications B Require replacement.
Mixed tread types (all
season, performance, mud
and snow) on same axle . A Require replacement.
Number of punctures
exceeds manufacturer’ s
limit B Require replacement.
Out of balance B . Require rebalance of tire/wheel
assembly.
Ply separation A Require replacement.
Pull or lead, caused
by tire A . . Require repair or replacement.
Radial and bias or
bias-belted ply tires
on same axle B . . Require repair or replacement.
Radials are on the front
and not on the rear .... B (2) Require repair or
replacement.
Run flat damage A Require replacement.
Shoulder cut A Require replacement.
Shoulder puncture A Require replacement.
Shoulder with plug A Require replacement.
Sidewall bulge A Require replacement.
Sidewall cut A Require replacement.
Sidewall indentation No service required or
suggested.
Sidewall puncture A Require replacement.
Sidewall with plug A Require replacement.
Speed rating
designations
different
on same axle 2 . . Suggest repair or replacement.
Tire and wheel assembly
has excessive run-out . . B (3) Require repair or
replacement of appropriate
part. Tires with more than
1/4" diameter difference
on a four-wheel drive
vehicle B Require replacement.
Tread area puncture larger
in diameter than
manufacturer’ s
specifications B Require replacement.
Tread missing pieces
(chunking),
exposing cord A Require replacement.
Tread missing pieces (chunking) , not
exposing cord 1 Suggest replacement.
Tread separations A Require replacement.
Tube in tubeless tire 3 .... (4) Suggest removal of tube.
Weather-checking No service required or
suggested. Worn to tread wear
indicators B Require replacement.
- Determine and correct cause of irregular tire wear.
- If radials and bias or bias-belted ply tires are on the
same vehicle, the radials must be on the rear axle, except for high-pressure temporary spares.
(3) - Excessive is defined as enough to contribute to
performance problems. Match mounting may correct run-out. If not, require replacement of appropriate part. Refer to manufacturer’s specifications.
(4) - Most manufacturers do not recommend tubes in tubeless
tires. Inspect tire and wheel assembly to determine the reason for a tube in tubeless tire. Recommendation for repair or replacement should be based upon condition of tires and/or wheel listed in these guidelines.
VALVE STEMS
VALVE STEM INSPECTION
Condition Code
Bent
Broken
Cut, but not leaking Deteriorated (cracking, dry rot)
Leaking
Missing
Threads damaged
Threads stripped
Valve cap missing
Weather-checking
Won’t take air
Procedure
1 Suggest replacement.
A Require replacement.
1 Suggest replacement.
1 Suggest replacement.
A . Require repair or replacement.
С Require replacement.
A . Require repair or replacement.
A Require replacement.
С .... Require replacement of cap.
1 Suggest replacement.
A . Require repair or replacement.
WHEEL ATTACHMENT HARDWARE
For conditions noted below, also check conditions of wheel stud holes.
CAUTION: Proper lug nut torque is essential. Follow recommended torque specifications and tightening sequence. DO NOT lubricate threads unless specified by the vehicle manufacturer.
WHEEL ATTACHMENT HARDWARE INSPECTION
Condition
Code
Procedure
Bent Broken
A Require replacement.
A (1) Require replacement.
Loose B ... Require repair or replacement
of affected component. Lug nut installed
backward B . . Require repair or replacement.
Lug nut mating type
incorrect B Require replacement of nut.
Lug nut mating surface
dished A Require replacement of nut.
Lug nut rounded A . (2) Require replacement of nut.
Lug nut seized A . (2) Require replacement of nut.
Stud incorrect B .... Require replacement of stud.
Threads damaged A ... Require repair or replacement
of component with damaged threads.
Threads stripped A Require replacement of
component with stripped threads.
(1) - Some manufacturers require replacement of all studs on
that wheel if two or more studs or nuts on the same wheel are broken or missing.
(2) - Only required if removing wheel.
WHEELS (RIMS)
WARNING: Mounting a regular tire on a high-pressure compact spare wheel is not permitted. Attempting to mount a tire of one diameter on a wheel of a different diameter or flange type may result in serious injury or death. If the wheel identification stamp is not legible, or cannot be found, do not use the wheel until the size and type have been properly identified. Wheels of different diameter, offset, or width cannot be mixed on the same axle. Bead seat tapers cannot be interchanged.
WHEEL (RIM) INSPECTION
Code
A
A
Condition
Bead leaking, caused
by wheel
Bent hub mounting
surface
Bent rim, causing
vibration
Broken
Cast wheel porous,
causing a leak
Clip-on balance weight is
incorrect type
for rim flange
Corrosion, affecting
structural integrity Corrosion build-up on
wheel mounting
surface
Cracked
Directional/asymmetrical
wheels mounted
incorrectly
Procedure
1) Require repair or replacement.
A Require replacement.
2 (1) Suggest replacement.
A Require replacement.
Require repair or replacement.
2 Suggest replacement.
A Require replacement.
A Require repair.
A Require replacement.
Ð’ Require remounting and/or
repositioning.
Load capacity less than
OEM specifications B Require replacement.
Offset mismatched
on same axle B Require replacement.
Rivets leaking A Require replacement.
Run-out beyond
OEM specs B Require replacement.
Stud holes elongated .... A (2) Require replacement.
Welded or brazed
repair 2 Suggest replacement.
Welds leaking A Require replacement.
Wheel centering (pilot)
hole incorrect B Require replacement.
- CAUTION: DO NOT attempt to correct a bent rim.
- Inspect wheel attaching hardware for damage.