Front

Fig. 10 AD type disc brake assembly. Corolla RWD, Supra & 1984-85 Celica:

Pads, Replace

1. Raise and support front of vehicle, then remove tire and wheel assembly. On some Supra models, temporarily install lug nuts to hold rotor in place.
2. On some Supra models, remove brake hose bracket attaching bolts from steering knuckle.
3. On all models, while holding the sliding bushing, remove cylinder installation bolt, Fig. 10.
4. On 1984-85 Supra models, rotate caliper upwards on main pin, then install a bolt into torque plate hole to secure caliper. On except 1984-85 Supra models, rotate caliper upwards and remove. Suspend caliper with wire using caution not to stretch brake hose.
5. On all models, remove pads and anti-squeal shim.
6. Remove anti-rattle springs, support and pad guide plates.
7. Install new anti-rattle springs, support and pad guide plates.
8. Siphon a small amount of fluid from master cylinder reservoir.
9. Slowly force piston into caliper bore.
10. Install new pads and anti-squeal shim. If pads are equipped with wear indicators, install outside pad so indicator is at top side of caliper.
11. Rotate caliper into place, then install cylinder installation bolt and torque to 12-17 ft. lbs. on 1984-85 Supra models. On except 1984-85 Supra models torque bolt to 27 ft. lbs.
12. On except 1984-85 Supra models, install brake hose bracket attaching bolts. Torque attaching bolts to 14 ft. lbs.
13. On all models, fill master cylinder, then pump brake pedal until a firm pedal is obtained.

Caliper, Replace

1. Disconnect brake hydraulic hose at frame bracket, then at caliper.
2. Remove caliper by following steps 1 and 2 of above procedure, then lift caliper up and pull away from torque plate main pin, Fig. 10.
3. Reverse procedure to install.




Disc, Replace




1. Raise and support front of vehicle, then remove tire and wheel assembly.
2. Remove speed sensor from steering knuckle (if equipped).
3. Remove brake hose bracket from steering knuckle.
4. Remove brake caliper and suspend with wire.
5. Scribe alignment marks between disc and hub, then remove rotor.
6. Reverse procedure to install.

Fig. 10 AD type disc brake assembly. Corolla RWD, Supra & 1984-85 Celica:

Caliper, Overhaul

1. Remove caliper as described under "Caliper, Replace".
2. Remove pads, anti-squeal shims, anti-rattle springs, support and pad guide plates.
3. Remove sliding bushing and boot, Fig. 10.
4. Using a suitable chisel and hammer, remove main pin boot.
5. Remove piston using compressed air. When using compressed air to remove piston, keep fingers clear of piston to avoid injury.
6. Remove caliper boot, set ring and piston seal from caliper.
7. Lubricate main pin boot, sliding pin and boot, piston seal and boot and dust boot with suitable brake lubricant.
8. Install piston seal and piston in caliper.
9. Install cylinder boot and seat in caliper.
10. Using a 21 mm socket, press in main pin boot, then install dust and sliding bushing.
11. Install caliper.