Operation CHARM: Car repair manuals for everyone.

Disc Brake System: Testing and Inspection



Check Lining Thickness Of Brake Pads And Condition Of Brake Discs.









Remove

CAUTION: See notes on repairs to brake system

1 Detach wheels

Inspect
2 Check thickness of brake pads (43) on front and rear axles

NOTE: Brake pads installed, observe recommended limit dimensions so that the wear limit is not violated before the next maintenance service.

- If required, install new brake pads.

3 Inspect brake disks (61) for scores and cracks

NOTE:
- Ventilated brake discs with hairline cracks up to a length of 25 mm, which may be caused by high stresses, do not need to be replaced.
- In the case of cracks and scores which have split open and are deeper than 0.5, replace brake disks.

4 Check perforation in brake disks (61)

NOTE: The perforation can close due to brake abrasion, if necessary, clean perforations in brake discs

Measuring
5 Measure thickness of brake disks on front and rear axles using caliper gage (035)

NOTE: Observe wear limits of brake disks, observe recommended limit dimensions so that the wear limit is not violated before the next maintenance service.
- If required replace brake disks.

Install
6 Fit wheels, rotate wheels if necessary