Brake Pads

Brake Pads

Special tools, testers and auxiliary items required

• Vehicle Diagnostic, Test and Information System (VAS 5051)

• Diagnostic Cable (VAS 5051/1) or (VAS 5051/3)

• Torque Wrench (V.A.G 1331)

• Piston Resetting Tool (T10145)

Removing

When removing, mark brake pads that will be used again. Install in the same position, otherwise braking effect will be uneven!

• Do not disconnect the connectors from the parking brake motors.

• Parking brake not actuated.

- Remove wheels.

The pistons of the parking brake must be driven back using the (VAS 5051).

Before pressing piston back, draw off brake fluid from reservoir using a bleeder bottle. Otherwise, especially if reservoir has been topped off, fluid will overflow and cause damage.

- (VAS 5051), connecting and selecting functions. Refer to => [ VAS 5051, Connecting and Selecting Functions ] Testing and Inspection.

- Select the electro-mechanical parking brake and the function moving piston of parking brake motor out and in.

- Drive the pistons back using the (VAS 5051).

- Then, remove the bolts from the brake caliper, while counter-holding the guide pins.





- Remove brake caliper downward from brake carrier.

• Resetting the piston with (VAS 5051) is often not sufficient but necessary! The pressure nut in the piston is a floating mount so the piston can only be pressed and cannot be pulled back. Only the spindle with the pressure nut is moved back.


The piston must first be reset with (VAS 5051).

- Now press piston all the way back with (T10145).





- Secure the brake caliper with wire so the weight of caliper does not hang from or damage the brake line.

- Remove brake pads and anti-rattle springs - arrows -.





Cleaning


Do not blow brake system using compressed air, the dust produced is harmful to health!

- Thoroughly clean contact surfaces for brake pads at brake carrier, remove corrosion.

- Clean brake caliper.

• Use only appropriate solvents for cleaning brake caliper.

Installing

- Insert brake pad retention plates - arrows - and brake pads in brake carrier.





- Make sure that the brake pads are located correctly in the anti-rattle springs - arrows -.





- Secure brake caliper using new self-locking bolts.

• The repair kit includes four self-locking hex bolts which must be installed in all cases.

After driving the pistons out with the (VAS 5051), a basic setting of the brake system must be performed.

- Perform the brake system basic setting with the (VAS 5051).

- Install wheels.

Tightening specification for wheel bolts.

• Check brake fluid level after replacing brake pad.