Wheel Hub: Testing and Inspection

Checking The Wheel Hub Lateral Runout




. Check the wheel hub lateral runout as described below; Measure 1 x outside -arrow- and 1 x inside -arrow- of the wheel both area (5-point measuring procedure) on the front face of the wheel hub. Fasten the dial gauge using a commercially available universal gauge holder (refer to workshop Equipment)

Wheel hub lateral runout is too large.
- Replace the wheel hub.

Wheel Hub lateral runout OK:
- Clean the leveling and centering surfaces on the brake disc and wheel hub. Next, apply a thin coat of Optimoly TA to the centering surface on the wheel hub. Fasten brake disc on the wheel hub in a different position than before - radially offset with respect to the wheel hub. Repeat the measurement with adapter plate 9510/1 fitted. If the lateral runout is still greater than 0.06 mm, replace the brake disc.

Measuring the disc brake thickness tolerance

- Measure thee brake disc thickness deviation within the brake surface at approx. 8 points by using the micrometer. Thickness tolerance of the brake disc max. 0.02mm (new condition: max.0.01mm).