ANTI-LOCK BRAKE SAFETY PRECAUTIONS
1993 Jeep Cherokee
GENERAL INFORMATION
Anti-Lock Brake Safety Precautions
* PLEASE READ THIS FIRST *
This article is intended for general information purposes only. This information may not apply to all makes and models. If vehicle is equipped with Anti-Lock Brake System (ABS), refer to appropriate ANTI-LOCK BRAKE SYSTEM article in the BRAKES section for description, operation, depressurizing, testing, system bleeding, trouble shooting and servicing of specific system.
WARNING: Failure to depressurize ABS could lead to physical injury.
ANTI-LOCK BRAKE SAFETY PRECAUTIONS
WARNING: Failure to depressurize ABS could lead to physical injury.
NEVER open
a bleeder valve or loosen a hydraulic line
while ABS is
pressurized.
NEVER
disconnect or reconnect any electrical connectors
while ignition
is on. Damage to ABS control unit may result.
DO NOT
attempt to bleed hyudarulic system without first
referring to the
appropriate ANTI-LOCK BRAKE SYSTEM article
in the BRAKES section.
Only
use specially designed brake hoses/lines on ABS equipped
vehicles.
DO
NOT tap on speed sensor components (sensor, sensor rings).
Sensor
rings must be pressed into hubs, NOT hammered into
hubs. Striking
these components can cause demagnetization or
a loss of
polarization, affecting the accuracy of the speed
signal
returning to the ABS control unit.
DO
NOT mix tire sizes. Increasing the width, as long as tires
remain
close to the original diameter, is acceptable. Rolling
diameter
must be identical for all 4 tires.
Some
manufacturers recommend tires of the same brand, style
and
type. Failure to follow this precaution may cause
inaccurate
wheel speed readings.
DO NOT
contaminate speed sensor components with grease. Only
use
recommended coating, when system calls for an
anti-corrosion
coating.
When speed
sensor components have been removed, ALWAYS check
sensor-to-ring
air gaps when applicable. These specifications
can be found in
each appropriate article.
ONLY use
rocommended brake fluids. DO NOT use silicone brake
fluids in an
ABS equipped vehicle.
When
instlling transmittion devices (CB’s, telephones, etc.)
on ABS
equipped vehicles, DO NOT locate the antenna near the
ABS control
unit (or any control unit).
Disconnect
all on-board computers, when using electric
welding equipment.
DO
NOT expose the ABS control unit to prolonged periods of
high heat
(185 F/85C for
2 hours is generally considered a
maximum
limit).
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