DeVille V8-4.6L VIN Y (1998)
Vacuum Brake Booster: Service and Repair
REMOVAL PROCEDURE
IMPORTANT: It is not necessary to remove or disconnect the master cylinder from the vehicle in order to remove the vacuum booster. However, if
both the vacuum booster and master cylinder are to be removed, remove the master cylinder first as described in Master Cylinder Replacement.
1. Remove the master cylinder attaching nuts.
2. Remove the master cylinder from the booster.
Move the master cylinder forward just enough to clear the studs on the vacuum booster. This will flex the brake pipes slightly. Do not bend or
distort the brake pipes.
3. Disconnect the vacuum hose from the vacuum check valve.
4. Remove the booster attaching nuts.
5. Remove the booster.
6. Remove the booster pushrod from the brake pedal.
Tilt the entire vacuum booster slightly to work the booster pushrod off the pedal clevis pin without putting undue pressure in the pushrod.
7. Remove the booster from the vehicle.
INSTALLATION PROCEDURE