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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 536 (Anti-Lock Brake System (Service Information)) >> HCU (Hydraulic Control Unit) >> Installation

HCU (Hydraulic Control Unit): Installation

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If the ABM is being replaced with a new ABM is must be reprogrammed with the use of a scan tool.
Fig 1: Antilock Brake Module
GC0026855Courtesy of DAIMLERCHRYSLER CORP.
1 - ABM
2 - HCU
  1. Install the 3 ABM (1) mounting bolts to the HCU (2) if removed tighten mounting bolts to 12 N.m (9 ft. lbs.).
    Fig 2: HCU/ABM
    GC0026826Courtesy of DAIMLERCHRYSLER CORP.
    1 - HCU
    2 - BRACKET
  2. Install the HCU (1) with bracket (2) to the vehicle and tighten the 2 mounting nuts.
    Fig 3: HCU Lines
    GC0026856Courtesy of DAIMLERCHRYSLER CORP.
    1 - ABM (ANTILOCK BRAKE MODULE
    2 - CHASSIS LINES
    3 - HYDRAULIC CONTROL UNIT
  3. Install the 4 chassis lines (2) at the HCU (3).
  4. Install the secondary brake line at the HCU (3).
  5. Install the secondary brake line at the master cylinder.
  6. Install the primary brake line at the HCU (3).
  7. Install the primary brake line at the master cylinder.
    Fig 4: HCU Lines/Connector
    GC0026825Courtesy of DAIMLERCHRYSLER CORP.
    1 - MASTER CYLINDER
    2 - ABM
    3 - CHASSIS LINES
    4 - HCU
    5 - ELECTRICAL CONNECTOR
  8. Reconnect the HCU (4) electrical connector (5).
  9. Install negative battery cable to the battery.
  10. Remove the brake pedal prop rod.
  11. Bleed base and ABS brake systems, refer to MANUAL BLEEDING or PRESSURE BLEEDING , and STANDARD PROCEDURE - BLEEDING ABS BRAKE SYSTEM .
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