Backing Plate: Service and Repair

REMOVAL
1. Remove the brake drum assembly.
2. Remove the brake shoe/lining assembly.





3. Loosen the brake pipe flare nut and remove the wheel cylinder mounting bolts.





4. Remove cable from brake back plate by squeezing parking brake cable stopper ring.
5. Drain rear differential gear oil.





6. Remove wheel bearing retainer nuts from rear axle housing.





7. Using special tools (A) 0S943-35511 and (B) 09942-15510, draw out rear axle shaft with brake back plate.

8. Remove brake back plate from rear axle shaft.





INSTALLATION
1. Apply sealant No. 99000-31110, or equivalent, to mating surface of bearing retainer with brake back plate.

NOTE: Make sure to remove old sealant from all areas where new sealant will be applied.





2. Install brake back plate to rear axle shaft.





3. Apply same sealant to joint seam of rear axle housing and brake back plate.





4. Install rear axle shaft to rear axle housing.

5. Tighten brake back plate nuts (a) to 23 Nm (17.0 ft. lbs.).





6. Install wheel cylinder, and tighten wheel cylinder bolts and brake pipe flare nut (or nuts) to specified torque.
7. Install parking brake cable to brake back plate.
8. Install brake shoes.
9. Install brake drum.
10. Refill differential housing with new specified gear oil.
11. Fill reservoir with brake fluid and bleed brake system. Service and Repair
12. Install wheel and tighten wheel nuts to 95 Nm (69.0 ft. lbs.)
13. Upon completion of all jobs, depress brake pedal with about 30 kg (66 lbs.) load three to ten times so as to obtain proper drum-to-shoe clearance and adjust the parking brake cable as necessary.
14. Tighten parking brake lever cover screws.
15. Check to ensure that the brake drum is free from dragging and proper braking is obtained. Then remove vehicle from the hoist and perform brake test (foot brake and parking brake).
16. Check each installed part for oil leakage.