REMOVAL & INSTALLATION
See Figure 1
- Raise and support the vehicle safely.
- Remove the wheel assembly.
- Remove the disc brake caliper assembly. Using a wire, support the caliper assembly; do not disconnect the brake line from the caliper.
- Remove the caliper mounting bolts and remove the mount.
- Remove the brake disc (rotor) from the wheel hub.
On some rotors there are two threaded holes in the rotor. Two 8mmx1.25 bolts can be placed in these holes. When the bolts are turned evenly, the rotor is pressed away from the hub.
- Inspect the disc for wear, cracks, runout and thickness; if necessary, replace the disc.
- Install disc onto the wheel hub.
- Install the disc caliper mount and tighten the mounting bolts.
- Install the caliper assembly to the caliper mounting bracket.
- Check the level of fluid in the master cylinder. Top off fluid as necessary.
- Install the wheels and tighten the wheel lug nuts to the proper specification.
- If the brake system was opened, bleed the brake system.
See Figures 2 and 3
- Check the brake rotor for roughness, cracks or chips; if necessary, replace the disc.
- To inspect the disc runout, perform the following procedure:
- Secure the disc to the wheel hub with 2 nuts.
- Make sure the wheel bearing end play is within specifications.
- Using a dial indicator, rotate the wheel disc and check the disc runout.
- If the runout exceeds specifications, move the disc to another position on the wheel hub and re-perform the dial indicator test.
- If the runout still exceeds specifications, machine the disc to specifications or replace it.
The rotor can be machined on a brake lathe; most auto parts stores have complete machine shop service. The rotors should be machined or replaced during every front disc brake pad replacement.
- Using a micrometer, check the disc thickness at about 8 positions; if the thickness variation is greater than 0.0004 in. (0.01mm), replace or resurface the disc.