Online Manual Jeep > Jeep Cherokee > Jeep Cherokee (XJ) > 1993 > ANTI-LOCK BRAKE SAFETY PRECAUTIONS


1993 Jeep Cherokee


Anti-Lock Brake Safety Precautions


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.


WARNING: Failure to depressurize ABS could lead to physical injury.

  1. NEVER open a bleeder valve or loosen a hydraulic line
    while ABS is pressurized.

  2. NEVER disconnect or reconnect any electrical connectors
    while ignition is on. Damage to ABS control unit may result.

  3. DO NOT attempt to bleed hyudarulic system without first
    referring to the appropriate ANTI-LOCK BRAKE SYSTEM article
    in the BRAKES section.

  4. Only use specially designed brake hoses/lines on ABS equipped

  5. 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.

  6. 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.

  7. DO NOT contaminate speed sensor components with grease. Only
    use recommended coating, when system calls for an
    anti-corrosion coating.

  8. 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.

  9. ONLY use rocommended brake fluids. DO NOT use silicone brake
    fluids in an ABS equipped vehicle.

  10. 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)

  11. Disconnect all on-board computers, when using electric
    welding equipment.

  12. 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).