Coolant Pipes Overview

Part 1

Fig 1: Identifying Coolant Pipes Overview (1 Of 2)

Courtesy of AUDI OF AMERICA, LLC

1. O-Ring
   • Replace
2. Nut
   • 9 Nm
3. Right Coolant Pipe
   • Removing and Installing. Refer to RIGHT COOLANT PIPE, REMOVING AND INSTALLING .
4. Bolt
   • 23 Nm
5. Seal
   • Replace
6. Bleed Screw
   • 9 Nm
7. Engine Lifting Eye
8. Bolt
   • 9 Nm
9. Bolt
   • 9 Nm
10. Connection
11. O-Ring
    • Replace
12. Upper Right Coolant Pipe
    • Removing and Installing. Refer to UPPER RIGHT COOLANT PIPE, REMOVING AND INSTALLING .
13. Bolt
    • Tightening specification. Refer to Special Tools .
14. Engine Cover Bolt
    • Tightening specification. Refer to Special Tools .
15. O-Ring
    • Replace
16. Connecting Piece
17. Bolt
    • 9 Nm
18. Engine Coolant Temperature Sensor -G62-
    • 2 Nm
    • Removing and Installing. Refer to Engine Coolant Temperature Sensor -G62-, REMOVING AND INSTALLING .
19. O-Rings
    • Replace
    • Note the different diameter.
20. Rear Coolant Pipe
    • Removing and Installing. Refer to REAR COOLANT PIPE, REMOVING AND INSTALLING .
21. Bolt
    • 9 Nm
22. O-Ring
    • Replace
23. Bolt
    • 9 Nm
24. Left Rear Coolant Pipe on the EGR Auxiliary Cooler
    • Removing and Installing. Refer to LEFT REAR COOLANT PIPE ON EXHAUST GAS RECIRCULATION AUXILIARY COOLER, REMOVING AND INSTALLING .
25. Bolt
    • 9 Nm
26. O-Ring
    • Replace
27. Left Rear Coolant Pipe on the Transmission
    • Removing and Installing. Refer to LEFT REAR COOLANT PIPE ON TRANSMISSION, REMOVING AND INSTALLING .
28. Bolt
    • 9 Nm
29. Bolt
    • 9 Nm
30. Upper Coolant Pipe
    • Removing and Installing. Refer to UPPER COOLANT PIPE, REMOVING AND INSTALLING .
31. Nut
    • 9 Nm
32. O-Ring
    • Replace

Part 2

Fig 2: Identifying Coolant Pipes Overview (2 Of 2)

Courtesy of AUDI OF AMERICA, LLC

1. Seals
   • Replace
2. Banjo Bolt
   • 15.5 Nm
3. Bolt
   • 9 Nm
4. Coolant Line
   • to the cylinder heads
5. Coolant Hose
   • From the exhaust gas recirculation coolant thermostat.
6. Seal
   • Replace
7. Bleed Screw
   • 9 Nm
8. Engine Cover Bolt
   • Tightening specification. Refer to Special Tools .
9. Upper Left Coolant Pipe
   • Removing and Installing - vehicles built through 05.10, refer to LEFT UPPER COOLANT PIPE, THROUGH 05.10, REMOVING AND INSTALLING 
   • Removing and Installing, Vehicles from 06/2010. Refer to UPPER LEFT COOLANT PIPE, FROM 05/2010, REMOVING AND INSTALLING .
10. Bolt
    • 9 Nm
11. Left Rear Coolant Pipe
    • Removing and Installing. Refer to LEFT REAR COOLANT PIPE, REMOVING AND INSTALLING .
12. Bolt
    • 9 Nm
13. Bolt
    • 9 Nm
14. Bolt
    • 9 Nm
15. Left Coolant Pipe
    • Removing and Installing. Refer to LEFT COOLANT PIPE, REMOVING AND INSTALLING .
16. Bolt
    • 9 Nm
17. O-Ring
    • Replace