Ranger 2WD V6-182 3.0L (1995)
Vacuum Brake Booster: Adjustments
The push rod has an adjustment screw to maintain the correct relationship between the master cylinder push rod and the master cylinder piston. If the
push rod is too long it will prevent the master cylinder piston from completely releasing hydraulic pressure, causing the brakes to drag. If the push rod is
too short it will cause excessive pedal travel and an undesirable clunk in the booster area. Remove the brake master cylinder for access to the booster
push rod.
Power Brake Booster Push Rod Adjustment Gauge
To check the adjustment of the adjustment screw, fabricate a gauge using the dimensions shown in the illustration, and place it against the master
cylinder mounting surface of the booster body as shown below. The engine must be running, with the intake manifold vacuum hose connected to the
power brake booster, while checking the adjustment. Adjust the push rod screw by turning the adjustment screw in until the end just touches the inner
edge of the slot in the gauge.
