Removal
PROCEDURE1. Disconnect the negative (ground) cable from the battery and isolate cable.
2. Using a brake pedal depressor, move and lock the brake pedal to a position past the first inch of pedal travel. This will prevent brake fluid from draining out of the master cylinder when the brake tubes are removed from the Hydraulic Control Unit (HCU).
3. Raise vehicle. Vehicle is to be raised and supported on jackstands or on a frame contact type hoist.
CAUTION: Do not apply a 12 volt power source to any terminals of the 25 way HCU connector when disconnected.
CAB 25 Way Connector:
Unlocking CAB 25 Way Connector:
4. Remove the 25 way connector from the Controller Antilock Brake (CAB) located on the bottom of the HCU. The 25 way connector is removed from the CAB using the following procedure. Grasp the lock on the 25 way connector and pull it as far out as possible. This will unlock and raise the 25 way connector from the socket on the CAB.
CAUTION: Before removing the brake tubes from the HCU, the HCU must be thoroughly cleaned. This must be done to prevent dirt particles from falling into the ports of HCU or entering the brake tubes.
5. Thoroughly clean all surfaces of the HCU, and all brake tube nuts located on the HCU. Use only a solvent such as Mopar Brake Parts Cleaner or an equivalent to clean the HCU.
Brake Tube Connections To HCU:
6. Remove the brake tubes 6.from the inlet and outlet ports on the HCU.
HCU To Suspension Cradle Mounting Bolts:
7. Remove the 3 bolts attaching the HCU mounting bracket to the front suspension crossmember.
8. Remove HCU and the mounting bracket as a unit from the vehicle.
HCU Mounting Bolts:
9. Remove the 3 bolts mounting the HCU to the mounting bracket. Separate the HCU from the mounting bracket.
Pump Motor To CAB Wiring Harness:
10. Unplug the pump motor wiring harness from the CAB.
CAB Attaching Bolts:
11. Remove the 4 bolts attaching the CAB to the valve block of the HCU.
Remove/Install CAB:
12. Remove the CAB from the valve block of the HCU.