Push Rod Adjustment: Adjustment

NOTE: The power brake booster to master cylinder push rod adjustment should only need to be adjusted when the master cylinder has been replaced.

Remove the master cylinder; refer to MASTER CYLINDER .
Measure the master cylinder primary piston depth
1. Loosen the set screw.
2. Push the Master Cylinder Gauge plunger into the master cylinder primary piston.
3. While holding the plunger in place tighten the screw.
Fig 1: Measuring Master Cylinder Primary Piston Depth
Courtesy of FORD MOTOR CO.

CAUTION: Use care when removing the gauge from the master cylinder. If the gauge plunger is moved during removal a faulty measurement will be recorded causing the possibility of misadjustment of the power brake booster push rod.

Fig 2: Measuring Clearance Between Gauge And Push Rod

Courtesy of FORD MOTOR CO.

Measure the power brake booster push rod length.
1. Position the gauge to the over the power brake booster push rod.
2. Measure the clearance between the gauge and the push rod.

NOTE: If the power brake booster to master cylinder is not within specifications perform the following adjustment step.

Fig 3: Adjusting Power Brake Booster Push Rod

Courtesy of FORD MOTOR CO.

Adjust the power brake booster to master cylinder push rod.
1. Secure the push rod from spinning.
2. Adjust the power brake booster push rod.
Install the master cylinder; refer to MASTER CYLINDER .