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Home >> Jeep >> 2006 >> Commander Base, 3.7 K, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System (Service Information) >> HCU (Hydraulic Control Unit) >> Removal

HCU (Hydraulic Control Unit): Removal

  1. Remove the negative battery cable from the battery.
  2. Install a brake pedal prop rod.
  3. Siphon the master cylinder.
    Fig 1: HCU Lines & Components
    GC0044655Courtesy of DAIMLERCHRYSLER CORP.
  4. Remove the primary brake line at the master cylinder.
  5. Remove the primary brake line from the HCU (4).
  6. Remove the secondary brake tube at the master cylinder.
  7. Remove the secondary brake tube at the HCU (4).
  8. Remove the 4 chassis lines (3) at the HCU (4).
    Fig 2: Identifying ABM/HCU, Lines & Components
    GC0044653Courtesy of DAIMLERCHRYSLER CORP.
  9. Disconnect the HCU (4) electrical connectors (5).
    Fig 3: Identifying ABM/HCU Components
    GC0044738Courtesy of DAIMLERCHRYSLER CORP.
  10. Remove the mounting nuts at the HCU bracket (5).
  11. Remove the HCU (3) with the bracket (5) from the vehicle.
    Fig 4: Antilock Brake Module & Hydraulic Control Unit
    GC0026855Courtesy of DAIMLERCHRYSLER CORP.
    1 - ABM
    2 - HCU
  12. Remove the 3 ABM bolts securing the ABM (1) to the HCU (2).
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