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.

1. Remove the bolt and position the air cleaner assembly aside.
^ To install, tighten to 8 Nm (71 inch lbs.).
2. Disconnect the ABS module electrical connector.

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

Loosen the 6 brake tube to HCU fittings, disconnect and position the brake tubes aside.
^ To install, tighten to 17 Nm (13 ft. lbs.).
4. Remove the 3 HCU bracket to frame bolts.
^ To install, tighten to 25 Nm (18 ft. lbs.).
5. Remove the HCU assembly.
6. If necessary, remove the HCU bracket bolt and bracket.
^ To install, tighten to 11 Nm (8 ft. lbs.).
7. To install, reverse the removal procedure.
^ Bleed the brake system.