Disc Brake System: Testing and Inspection

Check Lining Thickness Of Brake Pads And Condition Of Brake Disks

Shown On Model 230.475:

Remove

DANGER:
- Risk of death. Death may result if vehicle slips or topples from the lifting platform.
- Align vehicle between the columns of the hydraulic hoist and position the four support plates below the hoist support points specified by the vehicle manufacturer.

1 Raise vehicle with lifting platform wheel-free
2 Detach wheels

Measuring
3 Measure lining thickness of brake pads (43) on front and rear axles

NOTE: Brake pads installed, observe recommended limit dimensions so that the service limit is not violated before the next maintenance service, if necessary replace brake pads on front axle.

CAUTION: See notes on repairs to brake system

Inspect
4 Inspect brake disks (61) for scores and cracks

NOTE:
- Ventilated brake disks 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.

5 Check perforation in brake disks (61)

NOTE: The perforation can close due to brake abrasion, if necessary, cleaning perforations in brake disks

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

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

Install
7 Mount wheels