465319 Removing and installing rear brake disc

WM 465319 Removing and installing rear brake disc

Tools





Removing rear brake disc

1. Raise the vehicle -> 4X00IN01 Lifting the vehicle 4X00IN01 Lifting the vehicle and remove wheel -> 440519 Removing and installing wheel 44051900 Removing and installing wheel.
2. Loosen adjustment device for parking-brake shoes.
Using a -screwdriver- , turn the adjustment device towards "Release".





Loosening and adjusting adjustment device

3. Loosen brake hose bracket at the wheel carrier.
Open combination plug connection at the wheel carrier and disconnect connector for brake-pad wear indicator.
4. Use the piston resetting fixture Nr.144 to push the brake pads back slightly and uniformly (refer to Tools and Equipment).
5. Remove rear brake caliper from the wheel carrier and suspend it in the wheel arch (do not open brake hydraulics).
6. Remove rear brake disc.
Remove the countersunk screws -1- and take off the brake disc. If a stuck brake disc cannot be removed by gentle tapping with a plastic hammer, turn screws evenly into the two M8 threads of the brake disc, thereby pressing off the disc.





Removing and installing brake disc

Installing rear brake disc

1. Check that all parts are in perfect condition and replace them if necessary.
2. Clean the levelling and centring surfaces on the brake disc and wheel hub.
Then apply a very thin coat of Optimoly TA to the centring surface on the wheel hub.

Information

The grey cast-iron brake discs at the rear right and rear left are identical. They are available with different external diameters and in different thicknesses (depending on the vehicle variant).

Rear PCCB brake discs are not identical. Observe marking for "right" and "left" side during assembly!

3. Fit brake disc and brake caliper using new fastening screws.
Tighten the two countersunk-head screws -1- to 10 Nm (7.5 ftlb.).
Tighten the brake caliper fastening screw to 85 Nm (63 ftlb.).





Removing and installing brake disc

4. Fit brake hose bracket at the wheel carrier. Observe correct tightening torque -> 4600TW Tightening torques for brake mechanics.
Plug in connector for brake-pad wear indicator at the combination plug connection and secure in place with a safety clip.
Ensure that the brake hose and brake line are in perfect position!
5. Adjust parking-brake shoes (turn adjustment device of parking-brake shoes to suit) -> 468316 Adjusting parking-brake shoes 468316 Adjusting the parking-brake shoes.





Adjusting parking brake shoes

6. Position disc brake pads onto brake disc by actuating the brake several times.
7. Check brake fluid level and correct if necessary. The brake fluid level must be between the MAX-MIN marking. => Brake system: checking fluid level -> 470801 Checking brake fluid level 47080150 Check brake fluid level





Brake system: checking fluid level

8. Fit wheel -> 440519 Removing and installing wheel 44051900 Removing and installing wheel.