Diesel Data: Automotive Repair

Vacuum Brake Booster: Service and Repair



Power Vacuum Brake Booster Replacement

Removal Procedure




1. Apply the parking brake.
2. Remove the master cylinder. Refer to Master Cylinder Replacement (Master Cylinder Replacement).




3. Disconnect the vacuum hose from the vacuum booster and from the engine.
4. Remove the left closeout/insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side (Instrument Panel Insulator Panel Replacement - Left Side).




5. Remove the pushrod retainer (3) from the brake pedal pin (4).
6. Remove the stop lamp switch (1) and the pushrod (2) from the brake pedal pin (4).




7. Remove the vacuum booster mounting nuts.
8. Remove the vacuum booster assembly.
9. Remove the gasket.

Installation Procedure




1. Install the gasket and the vacuum booster assembly.

Notice: Refer to Fastener Notice.

2. Install the vacuum booster mounting nuts on the vacuum booster.

Tighten the vacuum booster mounting nuts to 36 Nm (27 ft. lbs.).




3. Position the stop lamp switch (1) on the pushrod (2) and install on the brake pedal pin.
4. Install the pushrod retainer (3) to the brake pedal pin (4). The retainer will snap into place.
5. Install the left closeout/insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side (Instrument Panel Insulator Panel Replacement - Left Side).




6. Install the vacuum hose to the vacuum booster and to the engine.
7. Install the master cylinder. Refer to Master Cylinder Replacement (Master Cylinder Replacement).