Rotor, Hub and Bearings
REMOVAL & INSPECTION1. Remove locking hub assembly, if equipped.
2. Raise and support vehicle, then remove wheel assembly.
3. Remove caliper retainer and anti-rattle assemblies.
4. Remove caliper from disc and support caliper to prevent damage to brake line.
5. Remove inboard brake shoe.
6. Remove grease cap and driving hub snap ring, then the driving hub and retaining spring.
7. Remove wheel bearing adjusting locknut using tool C-4170 or equivalent, then the washer and adjusting nut.
8. Remove rotor assembly. The outer wheel bearing and retainer spring plate will slide out as rotor is removed.
9. Pry inner wheel bearing grease seal from hub, then remove bearing cone and the inner and outer bearing cups.
ASSEMBLY & INSTALLATION
1. Install inner and outer bearing cups in rotor.
2. Lubricate and install inner bearings, then install the grease seal using suitable tools.
3. Install rotor, then the outer wheel bearing.
4. Install inner locknut and torque to 50 ft-lbs, using tool C-4170, to seat bearings.
5. Loosen inner locknut, then retighten to specifications, while rotating hub. Back off locknut 135-150°. Set retaining washer in position by turning nut so that the pin pressed into locknut will engage nearest hole in washer.
6. Install outer locknut and tighten to specification. Endplay after final bearing adjustment should be 0.001-0.010 inch.
7. On 1988 models, install retaining spring plate, retaining spring with large end first, driving hub, snap ring and grease cap.
8. On all models, install inboard brake shoe on adapter with shoe flanges in adapter slots, then install caliper assembly. Use care not to pull dust boot out of its grooves while sliding piston and boot over the inboard shoe.
9. Install anti-rattle springs and retaining clips and tighten to specification. The inboard shoe anti-rattle spring must be installed on top of the retainer spring plate.
10. Install wheel assembly, then lower truck and test operation.