Vacuum Brake Booster: Service and Repair

Brake Booster









Removal and Installation

1. Remove the Hydraulic Control Unit (HCU). For additional information, refer to Vehicle Dynamic Systems Service and Repair.

2. Remove the brake master cylinder. For additional information, refer to Hydraulic Brake Actuation Brake Master Cylinder.

3. Disconnect the vacuum hose/check valve assembly from the brake booster.

4. Detach the heater hose bracket pin-type retainer from the cowl.





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

NOTICE: Do not service the brake pedal or brake booster without first removing the stoplamp switch. This switch must be removed with the brake pedal in the at-rest position. The switch plunger 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.

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

7. Disengage the locking tab and remove the brake booster rod pin.

8. Remove the brake booster nuts.
- To install, tighten to 23 Nm (17 lb-ft).

9. Remove the brake booster.

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

To install, reverse the removal procedure.

- Make sure the brake booster gasket is correctly positioned on the brake booster before installation.