Audi Q3: Rear Brake Caliper
Overview - Rear Brake Caliper
![Audi Q3. Overview - Rear Brake Caliper](images/books/251/audi_q3_rear_brake_caliper_1805.webp)
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](images/books/251/audi_q3_rear_brake_caliper_1807.webp)
- 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](images/books/251/audi_q3_rear_brake_caliper_1808.webp)
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](images/books/251/audi_q3_rear_brake_caliper_1809.webp)
- Turn the thrust nut far enough onto the spindle so that the
dimension -a- = 15 mm is reached.
![Audi Q3. A47-10013](images/books/251/audi_q3_rear_brake_caliper_1810.webp)
- 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](images/books/251/audi_q3_rear_brake_caliper_1811.webp)
- Press the piston far enough into the brake caliper until it
touches the thrust nut.
![Audi Q3. A47-10015](images/books/251/audi_q3_rear_brake_caliper_1812.webp)
- Carefully turn the spindle clockwise in direction of
-arrows- until the thrust nut is at
the stop.
![Audi Q3. A47-10016](images/books/251/audi_q3_rear_brake_caliper_1813.webp)
- The protective cap must contact the brake caliper
-arrows- all the way around.
![Audi Q3. A47-10017](images/books/251/audi_q3_rear_brake_caliper_1814.webp)
- 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](images/books/251/audi_q3_rear_brake_caliper_1815.webp)
READ NEXT:
Note
Brake master cylinder and brake boosters can be replaced
independently of one another.
1 - Heat Shield
2 - Nut
25 Nm
Always replace if removed
Sel
Note
The Brake Lamp Switch -F-/Brake Pedal Switch -F63- is
installed in the brake master cylinder.
Removing
Audi RS Q3:
- Remove the air filter housing, refer to
→ Engine
Special tools and workshop equipment
required
Brake Charger/Bleeder Unit -VAS5234-
Sealing plugs from Repair Kit -1H0 698 311 A-
Removing
- Remove the brake fluid reservoir,
SEE MORE:
Battery General Information
To guarantee a long service life, the Battery -A- must be
checked, serviced and maintained as described in this manual.
The Battery -A- supplies the power to start the engine. The
Battery -A- also acts as a power reserve for the entire vehicle
electrical system.
Rear Seat Backrest, Removing and Installing
Note
The following describes removing and installing the right
2/3 section of the backrest. Removing and installing the left
1/3 rear seat backrest is identical.
Special tools and workshop equipment
required
Trim Removal Wedge -3409-