Toyota Corolla 1970-1987 Repair Guide

Brake Disc

Print

REMOVAL & INSTALLATION



See Figures 1, 2 and 3

If necessary, check the disc runout. Front wheels bearings must be adjusted properly before runout check is made. Refer to Brake Specifications Chart in this section

We recommend replacement of the brake disc in axle sets for added safety and reliability

  1. Remove the brake pads and the brake caliper, as detailed earlier in this section.
  2.  
  3. Loosen the bolts which secure the caliper mounting bracket. Remove the torque plate or caliper mounting bracket.
  4.  



Click image to see an enlarged view

Fig. Fig. 1: Removing the brake rotor-all models similar

  1. On RWD models, remove the grease cap from the hub. Remove the cotter pin and the castellated nut. Remove the wheel hub with the brake disc attached. Remove the disc from the brake hub assembly.
  2.  
  3. On the FWD models, simply remove the disc from the axle hub.
  4.  
  5. Perform the disc inspection procedure, as outlined in the following section.
  6.  

To install:
  1. On RWD models, coat the hub oil seal lip with multipurpose grease and install the disc/hub assembly. Adjust the wheel bearing preload-Refer to Suspension & Steering .
  2.  



Click image to see an enlarged view

Fig. Fig. 2: Brake disc assembly-1970-79 models



Click image to see an enlarged view

Fig. Fig. 3: Brake disc assembly-1980 and late models

  1. On FWD models install the brake disc on the axle hub assembly.
  2.  
  3. Install the caliper bracket or torque plate. Install the brake caliper assembly.
  4.  
  5. Bleed the brake system.
  6.  

If a firm pedal cannot be obtained, bleed and adjust the brake system. Do not attempt to move the vehicle until a firm pedal is obtained

INSPECTION



See Figures 4 and 5

Examine the disc. If it is worn, warped or scored, it must be replaced. Check the thickness of the disc against specifications-refer to brake Specification Chart in this section. If it is below specifications, replace it. Use a micrometer to measure the thickness.



Click image to see an enlarged view

Fig. Fig. 4: Never use a rotor which is below minimum thickness



Click image to see an enlarged view

Fig. Fig. 5: Measure rotor run-out

The disc runout should be measured before the disc is removed and again, after the disc is installed. Use a dial indicator mounted on a stand to determine runout. If runout exceeds 0.006 inch (0.15mm), replace the disc.

Be sure that the wheel bearing nut is properly tightened. If it is not, an inaccurate runout reading may be obtained

 
label.common.footer.alt.autozoneLogo