W 250 Pickup L6-359 5.9L DSL (1989)
Vacuum Brake Booster: Service and Repair
Fig 1 Power Brake Mounting And Related Parts
REMOVAL
1. Disconnect vacuum hose from check valve.
2. Remove master cylinder to booster mounting nuts.
3. From under instrument panel, position a small screwdriver between the center tang on the retainer clip and the pin in the brake pedal. Rotate
screwdriver enough to allow retainer clip center tang to pass over end of brake pedal pin and pull clip from pin. Discard retainer clip.
4. Remove mounting nuts and slide booster away from dash panel.
INSTALLATION
1. Position booster onto dash panel.
2. Install and tighten four mounting nuts to 220 in lb (25 Nm).
3. Install master cylinder to booster and tighten nuts to 200 in lb (23 Nm).
4. connect vacuum hose.
5. Connect push rod to pedal pin and install new retainer clip.
6. Check stop lamp operation and readjust if necessary.
