Installing Rear Brake Disc
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Information
Do not confuse left and right brake discs during installation!
Distinguishing feature: Part number! The flat surface of the brake discs is marked with R = right or L = left!
- Only when re-using brake discs:
Check thickness of rear disc brake pads.
- Only when re-using brake discs:
Check rear brake discs (wear assessment).
- Clean the levelling and centering surfaces on the brake disc and wheel hub.
- Apply a very thin coat of Optimoly TA to the centering surface on the wheel hub.
- Further installation is performed in reverse order.
- Screw in and tighten brake disc screws. >Tightening torque 5 Nm (3.5 ftlb.)
- Reset disc brake pads using >9472 - brake piston resetting fixture .
- Screw in and tighten brake calliper screws.
> Initial tightening 20 Nm (15 ftlb.)
> Final tightening torque angle + 70°
- Cancel brake pad change mode using >9900 - PIWIS Tester 3
.
- 9.1 Select → 'Brake electronics (PSM, incl. parking brake) ' in the 'Control unit overview ' and press F12 to confirm your selection.
- 9.2 Select → 'Cancel brake pad change mode ' under 'Drive links/checks ' and start the procedure.