Preliminary inspection - brake disc
1. Measure brake disc thickness for excessive wear. Minimum acceptable thickness is stamped on side of disc.
2. Replace disc if warped. Maximum allowable runout of a rear brake disc is 0.3 mm (0.012 in.).
3. If scored, replace disc.
Preliminary inspection - wheel/tire
1. Block motorcycle underneath frame so front wheel is raised off the ground.
2. Inspect tire for wear and wear pattern. Remove wheel assembly and replace tire as necessary. See 2.26 Tires.
3. Inspect air valve. Replace as necessary.
4. Inspect wheel bearing end play and service bearings if necessary. If end play is 0.051 mm (0.002 in.) or more, replace the wheel bearings. See 2.24 Sealed wheel bearings.
![](https://motoinstruction.ru/img/harley/2/111353.jpg)
Figure 2-68. Rear wheel components: 1. Disc wheel; 2. Compensator; 3. Lockwasher (5); 4. Screw; 5. Cushion compensator; 6. Left side spacer (2); 7. Sprocket assembly (w/bearings); 8. Bearing (2); 9. Axle; 10. Rear axle adjuster; 11. Axle nut; 12. Plug; 13. Sleeve; 14. Right side spacer; 15. Fasteners (5); 16. Brake disc; 17. Retaining ring