Vacuum Brake Booster: Service and Repair

REMOVAL PROCEDURE

Important: The booster can be removed from the vehicle without removing or disconnecting the master cylinder. However, if both the booster and the master cylinder are to be removed, remove the master cylinder first; refer to Master Cylinder.

1. Remove the booster vacuum hose from the Vacuum check valve.
2. Remove the master cylinder attaching nuts.
3. Remove the master cylinder from the booster. Move the master cylinder forward just enough to clear the studs on the booster. This will flex the brake pipes slightly. It's important to be careful not to bend or distort the pipes.
4. Remove the acoustical barrier from the booster studs (under I/P).





5. Remove the booster attaching nuts.
6. Remove the booster pushrod from the brake pedal. Tilt the entire booster slightly to work pushrod off the pedal clevis pin without putting undue side pressure on the pushrod.
7. Remove the booster from the vehicle.
8. Remove the gasket.






INSTALLATION PROCEDURE
1. Install the gasket to booster.
2. Install the booster to the vehicle.





3. Install the booster pushrod from the brake pedal. Tilt the entire booster slightly to work pushrod off the pedal clevis pin without putting undue side pressure on the pushrod.
4. Install the booster attaching nuts.
5. Install the acoustical barrier to the booster studs (under I/P).





6. Install the master cylinder onto the booster
7. Install the master cylinder attaching nuts.
^ Tighten the nuts to 27 Nm (20 ft. lbs.).

8. Install the booster vacuum hose from the vacuum check valve.