Installation
PROCEDURERemove/Install CAB:
1. Install the Controller Antilock Brake (CAB) on the valve block of the Hydraulic Control Unit (HCU).
CAB Attaching Bolts:
2. Install the 4 bolts mounting the CAB to the valve block of the HCU. Tighten the CAB mounting bolts to a torque of 2 Nm (17 inch lbs.).
Pump Motor To CAB Wiring Harness:
3. Plug the pump/motor wiring harness into the CAB.
HCU Mounting Bolts:
4. Install the HCU on the mounting bracket. Install the 3 bolts attaching the HCU to the mounting bracket. Tighten the 3 mounting bolts to a torque of 11 Nm (97 inch lbs.).
CAUTION: The HCU mounting bracket to front suspension cradle mounting bolts have a unique corrosion protection coating and a special aluminum washer. For this reason, only the original, or original equipment Mopar replacement bolts can be used to mount the HCU bracket to the front suspension crossmember.
HCU To Suspension Cradle Mounting Bolts:
5. Install the HCU and its mounting bracket as an assembly on the front suspension crossmember. Install the 3 bolts attaching the HCU bracket to the crossmember. Tighten the 3 mounting bolts to a torque of 28 Nm (250 inch lbs.).
CAUTION: Because of the flexible section in the primary and secondary brake tubes, and the brake tubes between the HCU and the proportioning valve, the brake tubes must be held in proper orientation when tightened and torqued. These tubes must not contact each other or other vehicle components when installed.
Brake Tube Connections To HCU:
CAUTION: When installing the chassis brake tubes on the HCU valve block, they must be located correctly in the valve block to ensure proper ABS operation. Refer to above image for the correct chassis brake tube locations.
NOTE: The chassis brake tube attachment locations to the HCU, are marked on the bottom of the HCU mounting bracket.
6. Install the 6 chassis brake tubes into their correct port locations on the HCU valve block as shown above. Tighten the tube nuts to a torque of 17 Nm (146 inch lbs.).
NOTE: Before installing the 25 way connector in the CAB be sure the seal is properly installed in the connector.
Unlocking CAB 25 Way Connector:
7. Install the 25 way connector on the CAB using the following procedure. Position the 25 way connector in the socket of the CAB and carefully push it down as far as possible. When connector is fully seated by hand into the CAB socket, push in the connector lock. This will pull the connector into the socket of the CAB and lock it in the installed position.
Brake Tube Routing Clips:
8. Install the routing clips on the brake tubes.
9. Lower vehicle.
10. Connect negative cable back on negative post of the battery.
11. Bleed the base brakes and the ABS brake hydraulic system.
Brake Bleeding
12. Road test vehicle to ensure proper operation of the base and ABS brake systems.