Power Brake Assist: Service and Repair

Brake Booster

Removal

All Vehicles

1. CAUTION: If brake fluid is spilled on the paintwork, the affected area must be immediately washed down with cold water.

Remove the master cylinder.





Vehicles with speed control
2. Disconnect the speed control unit electrical connector.





3. Detach the speed control unit.
^ Lower the speed control unit.





All Vehicles
4. Detach the brake tubes from the bulkhead.





5. Disconnect the Hydraulic Control Unit (HCU) electrical connector.
1 Release the retainer.
2 Disconnect the HCU electrical connector.





6. CAUTION: Cap the brake tubes to prevent fluid loss or dirt ingress.

Disconnect the brake tubes from the HCU.





7. Detach the brake booster actuating rod from the brake pedal.
1 Depress the brake pedal.
2 Depress the clip.
3 Remove the pin.





8. Remove the brake booster retaining nuts.
9. Remove the brake booster.

Installation





1. CAUTION: Make sure that the brake booster actuator rod is correctly positioned through the bulkhead rubber boot. Make sure the brake booster gasket is correctly positioned on the brake booster before installation.

To install, reverse the removal procedure.
2. Bleed the brake system.