Ranger 4WD V6-3.0L VIN U (1997)
Brake Master Cylinder: Adjustments
Brake Booster To Master Cylinder Push Rod (Part 1 Of 2)
Brake Booster To Master Cylinder Push Rod (Part 2 Of 2)
ROD TOO SHORT, TOO LONG
The master cylinder push rod has an adjustment screw to maintain the correct relationship between the master cylinder push rod and the brake
master cylinder piston. If the master cylinder push rod is too long, it will prevent the brake master cylinder piston from completely releasing
hydraulic pressure, causing the brakes to drag. If the master cylinder push rod is too short it will cause excessive brake pedal travel and an
undesirable clunk in the power brake booster area. Remove the brake master cylinder for access to the master cylinder booster push rod.
ADJUSTMENT CHECK
To check the adjustment of the adjustment screw, fabricate a gauge, and place it against the brake master cylinder mounting surface of the power
brake booster body as shown below. The engine must be running, with the vacuum hose connected to the power brake booster, while checking the
adjustment. Adjust the push rod screw by turning the adjustment screw to meet the specifications shown.
