Brake Pedal Assy: Testing and Inspection

1. With engine off and key "Off", pump service brake pedal until all reserve is exhausted from the brake booster.

2. Install J 28662 or equivalent onto the brake pedal.

3. Hook end of tape measure over top edge of brake pedal and measure the distance to the rim of the steering wheel.

4. Apply service brake pedal with a firm force (approximately 445 N (100 lbs) and re-measure. The difference between both readings is the actual pedal travel and should not exceed 63 mm (2.5 inches).

5. If pedal travel is greater than 63 mm (2.5 inches) drive the vehicle backward while intermittently applying the brakes. In rare cases excessive pedal travel will develop if brakes are only used occasionally when backing up. Duo-Servo self-adjusting mechanisms will only actuate when the brakes are applied in reverse. If clearance is not to specification it may be necessary to manually adjust brake shoe to drum clearance.