Vacuum Brake Booster: Service and Repair

Brake Booster









Removal and Installation

1. Remove the brake master cylinder. For additional information, refer to Hydraulic Brake Actuation Service and Repair.

2. Disconnect the vacuum hose from the brake booster check valve.

3. 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.

4. Remove the speed control deactivator switch. For additional information, refer to Cruise Control Cruise Control Deactivator Switch

5. Disconnect the brake booster push rod from the brake pedal and bracket.

6. Remove the bulkhead sound insulator.

7. Remove the 4 brake booster nuts and the brake booster.
- To install, tighten to 25 Nm (18 lb-ft).

8. 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.

To install, reverse the removal procedure.