B150 1/2 Ton Van V6-239 3.9L (1989)
Vacuum Brake Booster: Service and Repair
In-Line Mounted Booster
INLINE MOUNT
1. Disconnect vacuum hose from check valve.
2. Remove master cylinder to booster attaching nuts.
3. Working from under instrument panel, position a suitable screwdriver between center tang on retainer clip and pin in brake pedal. Rotate
screwdriver enough to allow retainer clip center tang to pass over end of brake pedal pin, then pull retainer clip from pin.
4. Remove power booster attaching nuts, then slide booster away from dash panel.
5. Reverse procedure to install.