Hydraulic Control Assembly - Antilock Brakes: Service and Repair

Hydraulic Control Unit (HCU)

Material:

Removal and Installation

WARNING: Brake fluid contains polyglycol ethers and polyglycols. Avoid contact with eyes. Wash hands thoroughly after handling. If brake fluid contacts eyes, flush eyes with running water for 15 minutes. Get medical attention if irritation persists. If taken internally, drink water and induce vomiting. Get medical attention immediately. Failure to follow these instructions may result in personal injury.

CAUTION: Brake fluid is harmful to painted and plastic surfaces. If brake fluid is spilled onto a painted or plastic surface, immediately wash it with water.

CAUTION: Electronic modules are sensitive to electrical charges. The ABS module can be damaged if exposed to these charges.

1. With the vehicle in NEUTRAL, position it on a hoist.
2. Disconnect the anti-lock brake system (ABS) electrical connector.





3. NOTE: Brake lines must be installed in the same location as removed.

Loosen the brake line-to-hydraulic control unit (HCU) fittings and position the brake lines aside.
^ To install, tighten to 17 Nm (13 ft. lbs.).
4. Remove the 2 bracket-to-HCU bolts and the HCU.
^ To install, tighten to 8 Nm (71 inch lbs.).
5. To install, reverse the removal procedure.
^ Bleed the brake system.