Brake Drum: Service and Repair

Fig. 7 Exploded View Of Brake Assembly. Tercel & Paseo:

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

Fig. 3 Measuring Brake Drum Inside Diameter:

Fig. 4 Measuring Brake Shoe Lining Thickness:

INSPECTION
1. Measure brake drum inside diameter. Inside diameter should be 7.09 inches, Fig. 3.
2. Measure brake shoe lining thickness, Fig. 4. Minimum thickness should be .04 inch.
3. Inspect brake lining and drum for proper contact and replace drum or shoes as necessary.
4. Inspect wheel cylinder for corrosion or damage.
5. Inspect backing plate for wear or damage.
6. Inspect bellcrank components for bending, wear or damage.
7. Apply a suitable lubricant to backing plate contact areas.

Fig. 7 Exploded View Of Brake Assembly. Tercel & Paseo:

INSTALLATION
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. 7.
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 position one end of rear shoe in wheel cylinder and the other end in anchor plate.
8. Install rear shoe pin and hold-down spring.
9. Insert anchor spring between front and rear shoes, then position end of front shoe in wheel cylinder with strut in place.
10. Install front shoe hold-down spring, retainers and pin.
11. Install shoe return spring clamp, then the shoe return spring.
12. Ensure adjusting bolt rotates while pulling parking brake upward. If bolt does not turn, check installation of rear brakes.
13. Adjust strut to shortest possible length, then install drum.
14. Pull parking brake lever fully upward then repeat step several times.

Fig. 5 Measuring Clearance Between Shoes & Drum:

15. Remove drum, then check for proper clearance, Fig. 5. Clearance should be .024 inch. If clearance is not as specified, check parking brake system.
16. Install brake drum, then bleed and refill brake system.
17. Install wheel and tire assembly, then lower vehicle.