Maintenance notes for brake disk
- Inspect brake disk for cracks, excessive wear and tear, grooves, corrosion and deformation.
- Remove corrosion and smooth smaller nicks with fine emery paper (400 grain).
- Replace the brake disk, if it is worn beyond the wear limit (see below).
Measure this minimum at two or three spots. - Replace the brake disk if it has an axial throw of 0.2 mm.
- Brake disks are surface-treated only for special applications.
A rust film of varying degree may form on the brake disk.
That can be removed with one or two parking
brake operations. - If rust has progressed further, it may be necessary to dismantle the disk from the
wheel so that both disk surfaces can be cleaned properly. First use a steel brush, then follow with 220 grain emery paper. Finally polish with 400 grain emery paper. This procudure may allow you to continue using the brake disk.
Wear limits
| Disk thickness mm |
Wear limit mm |
| 1,5 | 1,3 |
| 2,0 | 1,7 |
| 4,0 | 3,3 |
| 5,0 | 4,3 |
| Disk thickness mm |
Wear limit mm |
| 6,0 | 5,2 |
| 6,5 | 5,5 |
| 8,0 | 7,0 |
