Wheel Hub: Testing and Inspection

Measuring lateral run-out in hub

Special tools:
999 5418 Measuring kit 999 5418 Measuring Kit
999 5507 SCREW SET 999 5507 Screw Set

Preparations




- Get measurement tool set 999 5418 Measuring kit 999 5418 Measuring Kit.
- Remove brake caliper and brake pads as per Brake disc front, replacement Brake Disc Front, Replacement or Brake disc rear, replacement 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 M8 bolts, washers and nuts in bolt set 999 5507 SCREW SET 999 5507 Screw Set 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").
Front: Replace hub
Rear: Replace hub
Finishing
- Install brake disc on hub, lining up marks. Tighten locating pin and bolt to 8 Nm (6 ft.lb).
- Go to Brake disc front, replacement Brake Disc Front, Replacement or Brake disc rear, replacement Brake Disc Rear, Replacement.