Vacuum Brake Booster: Adjustments

Fig. 6 Brake Booster Push Rod Clearance:

1. Measure dimensions B, C and D as shown in Fig. 6.
2. Calculate brake booster push rod clearance, dimension A, using the following equation: A=B-C-D.
3. Brake booster push rod clearance, dimension A, should be .016-.031 inch. If not within specifications, adjust push rod length.