Online Manual Jeep > Jeep Cherokee > Jeep Cherokee (XJ) > 1993 > REFRIGERANT OIL & REFRIGERANT SPECIFICATIONS

A/C COMPRESSOR OVERHAUL

1993 Jeep Cherokee

1993 GENERAL SERVICING Compressor Servicing

REFRIGERANT OIL & REFRIGERANT SPECIFICATIONS

NOTE: Due to late changes, always refer to underhood A/C

Specification Label in engine compartment or A/C compressor label while servicing A/C system. If A/C Specification Label and specifications in table differ, use label specifications.

REFRIGERANT OIL & REFRIGERANT CAPACITY TABLE (CARS)

(1) Oil Refrigerant

Application Ounces Ounces

Chrysler Corp.

All FWD Cars (2) 7.3 32

Concorde, Intrepid

& Vision 5.0 28

Laser & Talon 5.0 33

  1. - Total system capacity, unless otherwise noted.

  2. - With fixed displacement compressor. Use 8.7 ounces with

variable displacement compressor.

REFRIGERANT OIL & REFRIGERANT CAPACITY TABLE (LIGHT TRUCKS/VANS)

(1) Oil Refrigerant

Application Ounces Ounces

Chrysler Corp. (Except Jeep)

Dakota 4.6 44

FWD Vans (2)

With Rear Unit 13.4 50

Without Rear Unit 6.7 36

Pickup & Ramcharger 4.6 44

RWD Vans

With Rear Unit 9.3 65

Without Rear Unit 7.3 45

Jeep

Cherokee 4.6 38

Grand Cherokee (2) 8.0 28

Wrangler 4.6 32

  1. - Total system capacity, unless otherwise noted.

  2. - Models use R-134a refrigerant and PAG (ND8) Refrigerant Oil

(Part No. 82300102).

COMPRESSOR APPLICATIONS

NOTE: Due to late changes, always refer to underhood A/C

Specification Label in engine compartment or A/C compressor label while servicing A/C system. If A/C Specification Label and specifications differ, use label specifications.

COMPRESSOR APPLICATIONS TABLE (CARS)

Application Compressor

Chrysler Corp.

Concorde, Intrepid, Laser,

Talon & Vision Nippondenso 10PA17 10-Cyl.

Except Concorde, Intrepid,

Laser, Talon & Vision Nippondenso 6C-17 6-Cyl.,

Nippondenso 10PA17 10-Cyl.,

Sanden TR-105 10-Cyl.,

Sanden SD-709P 7-Cyl.

COMPRESSOR APPLICATIONS TABLE (LIGHT TRUCKS & VANS)

Application Compressor

Chrysler Corp. (Except Jeep)

Dakota, Pickup & Ramcharger Sanden SD-709 7-Cyl.

FWD Vans Nippondenso 10PA17 10-Cyl.

RWD Vans Sanden TR-105 10-Cyl.

(1) - Series codes are determined by fifth character of VIN code.

BODY DESIGNATIONS

BODY DESIGNATIONS TABLE (CHRYSLER CORP. CARS)

Body Designation (1) Model

"A" Body Acclaim, LeBaron Sedan & Spirit

"C" Body Dynasty & New Yorker

"G" Body Daytona

"J" Body LeBaron Convertible/Coupe

"LH" Body Concorde, Intrepid & Vision

"P" Body Shadow & Sundance

"S" Body Laser & Talon

"Y" Body Fifth Avenue & Imperial

(1) - Body codes are determined by fifth character of VIN code.

BODY DESIGNATIONS TABLE (CHRYSLER CORP. LIGHT TRUCKS & VANS)
Model Designation

Caravan "D" & "K" Series

Dakota "N" Series

Pickups (Full Size) "D" & "W" Series

Ramcharger "AD" & "AW" Series

Town & Country "Y" Series

Vans (Full Size) "B" Series

Voyager "H" & "P" Series

NIPPONDENSO 6C-17 6-CYLINDER

CLUTCH ASSEMBLY

Removal

1) Disconnect negative battery cable. Loosen and remove

compressor drive belt. Disconnect clutch coil lead. With refrigerant lines attached, remove compressor mounting bolts and position compressor for service.

  1. Using Clutch Hub Holder (6355), remove crankshaft nut.
    Using Clutch Hub Puller
    (6354), remove clutch hub and hub clearance
    shims.

  2. Remove snap ring and pulley assembly. Remove snap ring and
    clutch coil assembly.

Installation

  1. Align hole in back of clutch coil with pin in compressor
    housing. Ensure clutch coil lead is properly routed. To complete
    installation, reverse removal procedure.

  2. Tighten crankshaft nut. Using a feeler gauge, check clutch
    plate-to-pulley clearance. Clearance should be .020-.035" (.51-.89

mm). If clearance is incorrect, add or remove shims as necessary.

SHAFT SEAL

Removal

  1. Discharge A/C system using approved refrigerant
    recovery/recycling equipment. Remove compressor. Drain oil from
    compressor, and measure amount of oil drained. Remove compressor
    clutch assembly.

  2. Remove compressor crankshaft key. Remove felt packing from
    nose of front cover. Clean area around seal.

3) Remove shaft seal snap ring. Using Seal Remover/Installer
(6429), remove seal from compressor.

Installation

  1. Lubricate NEW shaft seal with refrigerant oil. Install
    Seal Protector (6231) over compressor shaft. Using flat end of Seal
    Remover/Installer (6429), install shaft seal until seal seats in
    housing.

  2. Install NEW shaft seal snap ring. Install clutch assembly.
    Using new refrigerant oil, add same amount of oil to compressor as was
    drained from it. Install compressor. Evacuate and recharge system.
    Perform leak test. See LEAK TESTING in A/C GENERAL SERVICING
    PROCEDURES article in the AIR CONDITIONING & HEAT Section.

NIPPONDENSO 10PA17 & 10PA17A 10-CYLINDER

CLUTCH ASSEMBLY

Removal

  1. Remove and discard compressor shaft bolt. Remove clutch
    plate and shims. Tap on clutch plate using a soft-faced hammer (if
    necessary).

  2. Remove pulley assembly snap ring. Remove pulley assembly.
    Remove snap ring, and disconnect clutch coil lead. Remove clutch coil.

Installation (Chrysler)

  1. Install clutch coil so pin in back of coil aligns with
    hole in front housing. Install snap ring with beveled side away from
    compressor.

  2. Install pulley assembly. Install snap ring with beveled
    side away from compressor. If reusing original clutch plate and
    pulley, old shims can be used.

  3. If using new components, install several shims so shim
    pack thickness is .10" (2.5 mm). Install clutch plate and hold it
    tightly against shims.

  4. Using feeler gauge, measure air gap between clutch plate

and pulley surface. On Laser and Talon, clearance should be .014-.026" (.36-.66 mm). On all models except Laser and Talon, clearance should be .020-.035" (.51-.89 mm). Adjust shim thickness to obtain correct clearance. Install NEW compressor shaft bolt and tighten it to 13 ft. lbs. (18 N.m).

5) Once compressor shaft bolt is tightened, recheck clearance between clutch plate and pulley surface in 4 places. Readjust clearance if necessary.

NOTE: On Chrysler models, ensure voltage is correct after

installing new clutch. Cycle clutch on for 5 seconds and off for 5 seconds. Repeat cycle 20 times with A/C on, blower fan on high speed and engine speed at 1500-2000 RPM.

SHAFT SEAL

Removal

  1. Discharge A/C system using approved refrigerant
    recovery/recycling equipment. Remove compressor. Drain oil from
    compressor, and measure amount drained. Remove clutch assembly.

  2. Remove felt dust seal and dust seal retainer from front
    head. See Fig. 1. Remove shaft seal snap ring. Position front head

(nose up) on cardboard placed on a flat surface. Using brass drift, press shaft seal from front head.

Installation

  1. Lubricate new shaft seal with refrigerant oil. DO NOT
    touch sealing surfaces. Press seal into front head, and install snap
    ring. Install felt dust seal and dust seal retainer.

  2. Lubricate Shaft Seal Protector (J-34614) and front head
    "O" ring with refrigerant oil. Install shaft seal protector on
    crankshaft. Install a new front head "O" ring on cylinder assembly.

  3. Install front head on cylinder assembly. Ensure dowel pins
    are aligned. Use care when guiding shaft seal protector through seal
    opening. Remove shaft seal protector.

  4. Install through bolts using NEW brass washers. Diagonally
    tighten bolts to 19 ft. lbs. (26 N.m). Using INCH-lb. torque wrench,
    check compressor shaft rotating torque. Rotating torque should be
    26
    INCH lbs. (3 N.m). Install clutch assembly.

  5. Using new refrigerant oil, add same amount of oil to
    compressor as was drained from it. Install compressor. Evacuate and
    recharge system. Perform leak test. See LEAK TESTING in A/C GENERAL
    SERVICING PROCEDURES article in the AIR CONDITIONING & HEAT Section.

Fig. 1: Exploded View Of Compressor (Nippondenso 10PA17, 10PA17A & 10PA20 10-Cylinder) Courtesy of Ford Motor Co.

SANDEN SD-709 & SD-709P 7-CYLINDER

CLUTCH ASSEMBLY

Removal

  1. Using Spanner (6462), hold clutch and remove compressor
    shaft nut. Using Puller (6461), remove clutch plate. Remove key from
    compressor shaft.

  2. Remove pulley snap ring. Install jaws of Puller (6141-1)
    in snap ring groove on pulley. Place Shaft Protector (6141-2) on
    compressor shaft.

  3. Install puller plate on jaws. Thread 2 bolts through
    puller plate into jaws. Remove pulley from compressor. Remove snap
    ring and clutch coil.

Installation

  1. Install clutch coil and snap ring on compressor. Support
    compressor on rear mounting ears.

  2. Using hammer, Handle (6464) and Driver (6143), install
    pulley assembly. Ensure driver rests on inner race of bearing when
    installing pulley assembly. Install snap ring.

  3. Install shims. Install key in compressor shaft. Using
    hammer and Shaft Protector
    (6141-2), install clutch plate on
    compressor shaft. Tighten compressor shaft nut to 25-30 ft. lbs. (34-
    41 N.m).

  4. Using feeler gauge, measure clearance between clutch plate
    and pulley assembly in several areas. Clearance should be .016-.031"

(.41-.79 mm). If clearance is not within specification, adjust shim thickness to obtain correct clearance.

SHAFT SEAL

Removal

  1. Discharge A/C system using approved refrigerant
    recovery/recycling equipment. Remove compressor. Drain oil from
    compressor, and measure amount drained. Remove clutch assembly.

  2. Remove key from shaft. Remove felt ring metal retainer and
    felt ring. Using small screwdriver, remove shims for clutch plate.

  3. Ensure area around seal is clean. Remove shaft seal snap
    ring. Using Shaft Seal Remover/Installer (6142), remove shaft seal.

  4. Install Shaft Seal Remover/Installer (6144) into shaft
    seal. Press downward on shaft seal remover/installer and rotate it to
    engage tangs with slots of shaft seal. Pull shaft seal from
    compressor.

Installation

  1. Install Shaft Protector (6141-2) over compressor shaft.
    Coat shaft protector, new shaft seal and shaft seal seat with
    refrigerant oil. DO NOT touch sealing surfaces of seal.

  2. Place seal on seal remover/installer, and twist tool to
    hold seal. Install seal in compressor, and twist tool in opposite
    direction to release seal. Remove seal remover/installer. Using shaft
    seat remover/installer, install shaft seat.

  3. Install snap ring. Tap on snap ring to ensure it seats in
    groove (if necessary)
    . Install shims and new felt. To install
    remaining components, reverse removal procedure. Using new refrigerant
    oil, fill compressor with the same amount of oil drained from it.
    Install compressor. Evacuate and recharge system. Perform leak test.
    See LEAK TESTING in A/C GENERAL SERVICING PROCEDURES article in the
    AIR CONDITIONING & HEAT Section.

SANDEN TR-105 10-CYLINDER

CLUTCH ASSEMBLY

Removal

1) Discharge A/C system using approved refrigerant

recovery/recycling equipment. Remove compressor. Install two6-mm bolts in holes of clutch plate. Hold 6-mm bolts while removing nut from end of compressor shaft.

  1. Remove clutch plate and shims. Tap clutch plate from
    compressor (if necessary). DO NOT pry between clutch plate and pulley
    to remove clutch plate.

  2. Remove pulley assembly snap ring. Remove pulley assembly.
    Disconnect clutch coil lead. Scribe marks on clutch coil and
    compressor for installation reference. Remove snap ring and clutch
    coil.

Installation

  1. Install clutch coil on compressor so locating pin engages
    hole in clutch coil. Install snap ring with beveled side away from
    compressor.

  2. Install pulley assembly. Install snap ring with beveled
    side away from compressor. If reusing original clutch plate and
    pulley, old shims can be used.

  3. If new components are used, install several shims so shim
    pack thickness is .10" (2.5 mm). Install clutch plate and hold it
    tightly against shims.

  4. Using feeler gauge, measure air gap between clutch plate

and pulley surface. Proper clearance is .013-.025" (.33-.64 mm). Adjust shim thickness to obtain correct clearance. Tighten compressor shaft nut to 13 ft. lbs. (18 N.m).

5) Once compressor shaft nut is tightened, recheck clearance between clutch plate and pulley surface in 4 places. Readjust clearance if necessary. Install compressor. Evacuate and recharge system. Perform leak test. See LEAK TESTING in A/C GENERAL SERVICING PROCEDURES article in the AIR CONDITIONING & HEAT Section.

NOTE: After installing new clutch, ensure voltage is correct.

Cycle clutch on for 5 seconds and off for 5 seconds. Repeat cycle 20 times with A/C on, blower fan on high speed and engine speed at 1500-2000 RPM.

SHAFT SEAL

Removal

1) Discharge A/C system using approved refrigerant

recovery/recycling equipment. Remove compressor. Install two 6-mm bolts in holes of clutch plate. Hold 6-mm bolts while removing nut from end of compressor shaft.

  1. Remove clutch plate and shims. Tap clutch plate from
    compressor (if necessary). DO NOT pry between clutch plate and pulley
    to remove clutch plate.

  2. Insert 2 jaws of Bearing Remover/Installer (6533) into
    bearing groove. Install retainer over jaws of bearing
    remover/installer.

  3. Tighten pressure screw of bearing remover/installer
    against compressor shaft until bearing is removed.

  4. Remove felt washer from compressor. Remove shaft seal snap
    ring. Engage Seal Remover/Installer
    (6551) in slots of seal case. Lift
    seal from compressor.

Installation

  1. Place Seal Sleeve Protector (6552) over compressor shaft.
    Coat seal sleeve protector and seal lip with refrigerant oil. Using
    seal remover/installer, install seal. Remove seal sleeve protector.

  2. Install shaft seal snap ring. Install felt washer. Install
    bearing in pulley. Using hammer with jaws and retainer of bearing
    remover/installer, drive bearing into pulley.

  3. If reusing original clutch plate and pulley, old shims can
    be used. If using new components, install several shims so shim pack
    thickness is
    .10" (2.5 mm). Install clutch plate and hold it tightly
    against shims.

  4. Using feeler gauge, measure air gap between clutch plate
    and pulley surface. Proper clearance is
    .013-.025" (.33-.64 mm).
    Adjust shim thickness to obtain correct clearance. Tighten compressor
    shaft nut to
    13 ft. lbs. (18 N.m).

  5. Once compressor shaft nut is tightened, recheck clearance
    between clutch plate and pulley surface in 4 places. Readjust
    clearance if necessary.