Vacuum Brake Booster: Service and Repair

Brake Booster









Removal and Installation

1. Disconnect the brake fluid level sensor electrical connector.

2. Disconnect the brake booster check valve.

3. Remove the 2 brake master cylinder nuts.
- To install, tighten to 23 Nm (17 lb-ft).

4. Disconnect the wiring harness bracket and position it aside.





5. Pull the brake master cylinder forward and position it aside.

6. Remove the instrument panel steering column cover. For additional information, refer to Instrument Panel Exploded View in Instrument Panel and Console Instrument Panel - Exploded View.

7. NOTICE: Do not service the brake pedal or brake booster without first removing the stoplamp switch and speed control deactivator switch. These switches must be removed with the brake pedal in the at-rest position. Switch plungers must be compressed for the switch to rotate in the bracket. Attempting to remove the switch when the plunger is extended (during pedal apply) will result in damage to the switch.

Remove the stoplamp switch. For additional information, refer to Exterior Lighting Service and Repair.

8. If equipped, remove the speed control deactivator switch. For additional information, refer to Cruise Control Cruise Control Deactivator Switch.

9. Remove the brake booster push rod retaining pin cover, retaining pin, washer, bushing and switch.
- Slide the booster push rod off the pedal pin.

10. Remove the 4 brake pedal bracket nuts and the power brake booster.
- To install, tighten to 28 Nm (21 lb-ft).

11. NOTICE: Do not press, pull or otherwise move the brake pedal while installing the stoplamp switch or the speed control deactivator switch. These switches must be installed with the booster push rod attached to the brake pedal and with the brake pedal in the at-rest position. Installing these switches with the brake pedal in any other position will result in incorrect adjustment and may damage the switches.

NOTE: The brake booster input rod must be correctly oriented during installation.

To install, reverse the removal procedure.