Brake Disc Runout Check
Brake Disc Runout CheckCheck
1. Remove the wheel and tire.
Wheel and Tire
2. Install all wheel nuts and tighten equally to 20 Nm (15 lb.ft).
^ Make sure that the brake disc is fully seated against the hub face.
3. Install a dial test indicator gauge and holding fixture to a suitable mounting point.
4. NOTE: If the runout is outside specification, check the hub face runout.
Using the dial test indicator, measure the inner and outer faces of the brake disc.
1. Position the gauge so that it contacts the disc 10 mm (0.4 in) from the outer edge.
2. Slowly rotate the hub/disc assembly. Note the reading.
5. If a front hub runout check is required, remove the front brake disc.
6. If a rear hub runout check is required, remove the rear brake disc.
7. NOTE: The hub surface should be free from dirt and corrosion. Do not use abrasive cloths to clean hub faces.
Using the dial test indicator, measure the hub face runout.
1. Position the gauge so that it contacts the mounting tube between the stud and the chamfer.
2. Slowly rotate the hub and note the runout.
^ If the front hub runout exceeds the specifications, install a new hub, brake disc and recheck. If the rear hub runout exceeds the specifications, install a new hub, brake disc and recheck.
8. If the front hub face is within specification, install a new brake disc. If the rear hub face is within specification, install a new disc.
9. Install the wheel and tire.