Brake Pedal Assy: Testing and Inspection

Fig. 10 Checking brake pedal travel:

1. With engine off, pump brake pedal several times to exhaust all vacuum from booster.
2. Apply about 66 lb. load to brake pedal and measure pedal arm to firewall clearance B, Fig. 10. Clearance must not be less than 3.35 inches.
3. Possible causes for a low pedal are:
a. Worn rear brake shoes.
b. Brake lines need bleeding.
c. Booster pushrod out of alignment.
d. Rear brake shoe adjusters malfunctioning.