Hydraulic Control Assembly - Antilock Brakes: Service and Repair

Hydraulic Control Unit (HCU)

Material:

Removal and Installation

WARNING: Use of any other than approved DOT 3 brake fluid will cause permanent damage to brake components and will render the brakes inoperative.

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.

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

CAUTION: Do not allow the master cylinder to run dry during the bleeding operation. Keep the master cylinder reservoir filled with the specified brake fluid. Never reuse the brake fluid that has been drained from the hydraulic system.

1. Remove the battery tray. For additional information, refer to Battery.





2. Remove the battery tray bracket.
3. Disconnect the hydraulic control unit (HCU) electrical connector.
4. Disconnect the brake master cylinder-to-HCU line fittings.
^ To install, tighten to 17 Nm (13 ft. lbs.).
5. Disconnect the HCU output line fittings.
^ To install, tighten to 17 Nm (13 ft. lbs.).
6. Remove the HCU bracket nuts.
^ To install, tighten to 9 Nm (80 inch lbs.).
7. Remove the HCU assembly from the vehicle.
8. To install, reverse the removal procedure.
^ Bleed the brake system.