Overview - Rear Brakes

Fig 1: Exploded View Of Rear Brakes

Courtesy of AUDI OF AMERICA, LLC

1. Bleed Screw
   • 11 Nm
   • Before installing, thinly coat with Assembly Paste :G 052 150 A2  .
2. Protective Cap
3. Bolt
   • 35 Nm
   • Replace if damaged
   • Clean before re-using
   • Replace self-locking bolts and nuts after removing
   • When loosening and tightening, counterhold at the guide pin
4. Seal
   • Replace after removing.
5. Bolt
   • 13 Nm
   • Replace if damaged
   • Clean before re-using
   • Replace self-locking bolts and nuts after removing
6. Electro-Mechanical Parking Brake Motor
   • Left Parking Brake Motor -V282-
   • Right Parking Brake Motor -V283-
   • Refer to LEFT AND RIGHT PARKING BRAKE MOTOR -V282- / -V283-, REMOVING AND INSTALLING 
7. Guide Pin
   • Check ease of movement
8. Clip
9. Brake Pad Wear Indicator Wire
   • Replace when replacing the brake pads.
   • With Right Rear Brake Pad Wear Sensor -G37-
   • Only for right inner brake pad
   • Refer to BRAKE PAD WEAR INDICATOR WIRE, REMOVING AND INSTALLING 
10. Protective Cap
    • Replace if damaged
11. Banjo Bolt
    • 35 Nm
    • Replace together with the brake hose
    • Permanent with seals
    • Check for damage
    • Clean any corrosion from the sealing surface on the brake caliper
12. Brake Hose
    • Pay attention to the correct routing: make sure the brake hose is not blocked, bent or rubbing against the vehicle
    • Replace if damaged
    • Make sure that tabs are properly seated in the grooves on the bracket.
13. Bracket
    • For the brake line/hose
    • On the body
14. Spring
    • Replace if damaged
15. Brake Line
    • Brake line to brake hose tightening specification: 14 Nm
16. Bracket
    • For the brake line
17. Bolt
    • 100 Nm +90°
    • Replace after removing.
18. Wheel Bearing Housing
19. Bolt
    • 20 Nm
20. Bracket
    • For the brake line/hose
21. Brake Shield
    • Refer to BRAKE SHIELD, REMOVING AND INSTALLING 
22. Bolt
    • 10 Nm
    • Replace if damaged
    • Replace self-locking bolts and nuts after removing
    • Clean before re-using
23. Brake Rotor
    • Do not use excessive force to separate the brake rotor from the wheel hub. Use rust remover, if necessary, otherwise the brake rotor could be damaged.
    • Maximum lateral run-out: 0.06 mm
    • If the brake rotor is installed, measure using the Dial Indicator - 0-10mm :VAS6079  and Dial Indicator Bracket :VAS6079/1  .
    • Clean away any dirt and rust on the brake rotor, and perform the measurement 10 mm from the outer edge of the brake rotor.
    • Refer to BRAKE ROTOR, REMOVING AND INSTALLING 
      CAUTION:

      Risk of accident due to uneven braking.

      - If a brake rotor is damaged or worn, check the other brake rotors for damage and wear.

24. Bolt
    • 8 Nm
    • Replace if damaged
    • Replace self-locking bolts and nuts after removing
    • Clean before re-using
25. Brake Pads
    • Always replace on both axles.
    • Check the pad thickness. For the wear limit. Refer to BRAKE PADS, CHECKING THICKNESS .
    • Allocation. Refer to the Parts Information.
    • Refer to BRAKE PADS, REMOVING AND INSTALLING 
    • Installation position. Refer to Fig 2.
26. Brake Carrier
    • Delivered as an assembled replacement part with sufficient grease on the guide pins
    • Refer to BRAKE CARRIER, REMOVING AND INSTALLING 
    • Clean the contact surfaces for the brake pads and thinly coat with Lithium Grease :G 052 150 A2 
27. Brake Caliper
    • Refer to BRAKE CALIPER, REMOVING AND INSTALLING 
    • Refer to BRAKE CALIPER, REPLACING 
    • After servicing or replacing, perform"Guided Fault Finding"  using the Vehicle Diagnostic Tester.

Brake Pad Installation Position

Fig 2: Brake Pad Installation Position

Courtesy of AUDI OF AMERICA, LLC

1. Engage the inner brake pad with groove -arrow- for the brake pad wear sensor in the brake carrier
2. Engage the outer brake pad into the brake carrier