Brake Shoe: Service and Repair

Removal
1. Raise and support rear of vehicle, then remove wheel and tire assembly.
2. Remove brake drum. If brake drum cannot be remove easily, insert a suitable screwdriver through hole in backing plate, then push automatic adjuster lever away from adjuster and back of adjustment tension.
3. Disconnect return spring, using a suitable tool, then remove front shoe hold-down spring, retainers and pin.

Fig. 10 Exploded View Of Type 6 Drum Brake Assembly.:

4. Disconnect anchor spring, then remove front brake shoe and anchor spring, Fig. 10.
5. Remove rear shoe hold-down spring, retainers and pin, using suitable a tool, then disconnect parking brake cable from anchor plate.
6. Disconnect parking brake cable from lever, then remove rear shoe with strut.
7. Remove adjusting lever spring, strut and return spring from rear shoe.
8. Remove C-washer, then the shims, parking brake lever and automatic adjusting lever from rear shoe.
9. Position a suitable container to catch fluid, then disconnect brake line.
10. Remove two attaching bolts, then the wheel cylinder.
11. Remove two boots, two pistons, two piston cups and spring from wheel cylinder.

Installation

Fig. 10 Exploded View Of Type 6 Drum Brake Assembly.:

1. Apply a suitable lubricant to pistons and cups, then install spring and two piston cups into wheel cylinder. Apply a suitable lubricant to inside of boots, then insert them into cylinder, Fig. 10.
2. Install wheel cylinder onto backing plate, then insert attaching bolts and torque to 7 ft. lbs.
3. Connect brake tube to wheel cylinder, then torque nut to 11 ft. lbs.
4. Apply a suitable lubricant to adjuster bolt contact points, then install levers, shim and new C-washer.
5. Measure clearance between shoe and lever. Clearance should be .014 inch. If clearance is not as specified, select a suitable shim to bring clearance to specified value.
6. Place strut and return spring on rear shoe, then install adjusting lever spring.
7. Connect parking brake cable to lever, then insert cable through notch in anchor plate.
8. Position one end of rear shoe in wheel cylinder and the other end in anchor plate.
9. Install rear shoe pin and hold-down spring and retainers.
10. Insert anchor spring between front and rear shoes, then position end of front shoe in wheel cylinder with strut in place.
11. Install front shoe hold-down spring, retainers and pin.
12. Install return spring.
13. Ensure adjusting bolt rotates while pulling parking brake upward. If bolt does not turn, check installation of rear brakes.
14. Adjust strut to its shortest possible length, then install drum.
15. Pull parking brake lever fully upward, then repeat step several times.

Fig. 5 Measuring Clearance Between Shoes & Drum:

16. Remove drum, then check for proper clearance, Fig. 4. Clearance should be 0.024 inch. If clearance is not as specified, check parking brake system.
17. Install brake drum, then bleed and refill brake system.
18. Install wheel and tire assembly, then lower vehicle.