Drum Brake System: Adjustments

Measuring Drum And Shoe For Adjustment:

1. Raise vehicle and suitably support.
2. Remove tire and wheel assembly. Mark relationship of wheel to axle flange to insure proper balance upon reassembly.
3. Remove brake drum. Mark relationship of drum to axle flange to insure proper balance upon reassembly.
4. Measure drum inside diameter (ID) using J 21177-A.
5. Turning star wheel, adjust shoe and lining diameter to be 0.76 mm (0.030 inches) less than inside drum diameter for each rear wheel.
6. Install drums.
7. Install tire and wheel assemblies.
8. Lower vehicle.
9. Tighten wheel nuts to specifications.
10. Make several alternate forward and reverse stops applying firm force to the brake pedal. Repeat until ample pedal reserve is built up.