Audi Q3 Owners & Service Manuals

Audi Q3: Rear Brake Caliper

Overview - Rear Brake Caliper

Audi Q3. Overview - Rear Brake Caliper

1 - Brake Caliper

  • Pre-bleed brake caliper after repairing, refer to → Chapter "Hydraulic System, Pre-Bleeding".

2 - Bolt

  • 35 Nm
  • Replacing
  • Self-locking
  • When loosening and tightening, counter-hold at guide pin

3 - Dust Cap

4 - Bleeder Screw

  • 13 Nm
  • Before installing, lightly grease the thread with Lithium Grease -G 052 150 A2-.

5 - Bolt

  • Tightening specification, refer to item -14-.

6 - Parking Brake Motor

7 - Seal

8 - Guide Pin

  • Grease before pulling on protective cap

9 - Protective Cap

  • Install on brake carrier and guide pin.

10 - Brake Carrier with Guide Pins and Cap

  • Supplied as an assembled replacement part with sufficient grease on guide pins.
  • Install the repair kit if the caps or guide pins are damaged. Use supplied grease packet to lubricate guide pins.

11 - Protective Cap

  • Pull onto piston with outer sealing lip
  • Removing and installing, refer to → Chapter "Brake Caliper Piston, Removing and Installing".

12 - Piston

  • Removing and installing, refer to → Chapter "Brake Caliper Piston, Removing and Installing".
  • Thinly coat the piston with Lithium Grease -G 052 150 A2-

13 - Seal

  • Do not damage when installing piston
  • Removing and installing, refer to → Chapter "Brake Caliper Piston, Removing and Installing".

14 - Pressure Nut

Brake Caliper Piston, Removing and Installing

Special tools and workshop equipment required

  • Trim Removal Wedge -3409-

Removing

  • The brake caliper is removed, refer to → Chapter "Brake Caliper, Replacing".
  • The parking brake motor is removed, refer to → Chapter "Left/Right Parking Brake Motor -V282-/-V283-, Removing and Installing".

  Note

  • Install complete repair kit when servicing.
  • To clean the brakes only use mineral spirits.
  • Thinly coat the brake cylinder, piston and seal with Lithium Grease -G 052 150 A2-.
  • In case of repair, brake calipers must always be pre-bled before being installed into vehicle (without brake pads), refer to → Chapter "Hydraulic System, Pre-Bleeding".

- Using an 8 mm internal multi-point socket, turn the spindle counter-clockwise in direction of -arrow-. As a result, the thrust nut pushes the piston out of the brake caliper.

- Remove the piston with the protective cap from the brake caliper.

Audi Q3. N47-10054

- Remove the sealing ring using the Trim Removal Wedge -3409-.

- Clean the surfaces on the pistons and seal only with mineral spirits and then dry.

Audi Q3. N47-0078

Installing

- Thinly coat the piston and the seal with Lithium Grease -G 052 150 A2- before installing.

- Insert oil seal into brake caliper.

- Place protective cap with outer sealing lip on piston.

Audi Q3. N47-0079

- Turn the thrust nut far enough onto the spindle so that the dimension -a- = 15 mm is reached.

Audi Q3. A47-10013

- Insert the inner sealing lip of the protective cap into the groove -arrows- in the brake caliper using the Trim Removal Wedge -3409-.

- Slide the piston onto the thrust nut, which is only possible in four positions.

- Carefully press the piston into the brake caliper by moving the piston.

Audi Q3. A47-10014

- Press the piston far enough into the brake caliper until it touches the thrust nut.

Audi Q3. A47-10015

- Carefully turn the spindle clockwise in direction of -arrows- until the thrust nut is at the stop.

Audi Q3. A47-10016

  • The protective cap must contact the brake caliper -arrows- all the way around.

Audi Q3. A47-10017

- Press the piston into the brake caliper by hand

  • Outer sealing lip of protective cap will then engage in piston groove.

Audi Q3. A47-10018

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