Wheel Hub: Testing and Inspection

Measuring lateral run-out in hub

Special tools:
999 5418
999 5507

Preparations





- Get measurement tool set 999 5418.
- Remove brake caliper and brake pads as per Brake disc front, replacement or Brake disc rear, replacement. Then continue as below.

Note: Mark brake disc up against hub so disc can return to its old position when installing.

- Clean hub flange carefully. Remove rust with steel blade and steel brush.

Installing measurement equipment





- Install measurement equipment as per illustration. Illustration shows testing front.
- Front:Use Me bolts, washers and nuts in bolt set 999 5507 when installing measurement tool bracket to front brake caliper mounting hole.

Note: Make sure that bracket is not lying against driveshaft gaiter, (front only).

- Rear:Use the bolts included in the measurement tool set when installing measurement tool bracket to the rear brake caliper mounting hole.

Measuring lateral run-out





- Put the test gauge point against the hub flange as in the illustration.
- Rotate hub gently. Use a wheel wrench as an aid on the front hub.

Note: Illustration shows testing front.

- Note test gauge run-out. Hub lateral run-out must not exceed 0.020 mm (0.00079").
- Replace hub if maximum lateral run-out exceeds 0.020 mm (0.00079").

Finishing
- Install brake disc on hub, lining up marks.
Tighten locating pin and bolt to 8 Nm (6 ft. lbs.).
- Go to Brake disc front, replacement or Brake disc rear, replacement.