User's Manual

Replacing Rotor

1. Remove the caliper assembly. See "Removing Disc Brake

Caliper" on page 19.

2. Remove the wheel/hub/rotor assembly from the vehicle

following the recommended procedures in WESM-0060.

3. Remove ABS tone ring (aluminum hubs only).

4. Remove rotor fasteners.

5. Remove rotor from wheel/hub.

CAUTION: Never release a vehicle from brake service

without verifying safe brake operation.

Rotor Runout Check

1. With rotor installed on vehicle, position dial indicator with

contact on 90º to rotor face.

Removing Rotor

1 – Rotor

1. Prior to rotor installation, clean and inspect wheel bearings

and replace seals following instructions in WESM-0060.

2. Inspect torque plate for cracks and obvious damage.

Replace as required.

3. Check fasteners and tighten as required to OEM

recommended torque specs.

4. Position rotor on mounting surface of wheel/hub.

5. Install fasteners and tighten to torque speciﬁ cations.

6. Re-install ABS tone ring (if previously removed).

7. Install wheel/hub and rotor assembly following the

recommended procedures in WESM-0060.

8. Install caliper assembly. See page 19.

9. Perform brake operation check.

Replacing Rotor

1 – Rotor

2 – Dial indicator

2. Rotate rotor through at least two full revolutions and check

lateral runout.

3. Record maximum runout indicated.

4. Repeat Steps 1-3 for the opposite rotor face.

5. If total indicated runout on either face is:

• less than .5 mm (0.21 in.) - rotor is good.

• more than .5 mm (0.21 in.) - resurface or replace rotor.

Note: Disc Thickness Variation (DTV) maximum .1 mm (.004 in.)

measure around rotor.