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 
4. Bolt
   • 23 Nm
5. Seal
   • Replace
6. Bleeder Screw
   • 9 Nm
7. Engine Lifting Eye
8. Bolt
   • 9 Nm
9. Bolt
   • 9 Nm
10. Connection Piece
11. O-ring
    • Replace
12. Upper Right Coolant Pipe
    • Removing and installing, refer to UPPER RIGHT COOLANT PIPE 
13. Bolt
    • Tightening specifications, refer to Description and Operation
14. Engine Cover Bolt
    • Tightening specifications, refer to FASTENER TIGHTENING SPECIFICATIONS
15. O-ring
    • Replace
16. Connecting Piece
17. Bolt
    • 9 Nm
18. Coolant Temperature Sensor -G62-
    • 2 Nm
    • Removing and installing, refer to ENGINE COOLANT TEMPERATURE SENSOR 
19. O-rings
    • Replace
    • Note the different diameter
20. Rear Coolant Pipe
    • Removing and installing, refer to REAR COOLANT PIPE 
21. Bolt
    • 9 Nm
22. O-ring
    • Replace
23. Bolt
    • 9 Nm
24. Left Rear Coolant Pipe on the Exhaust Gas Recirculation Auxiliary Cooler
    • Removing and installing, refer to LEFT REAR COOLANT PIPE ON EXHAUST GAS RECIRCULATION AUXILIARY COOLER 
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 
28. Bolt
    • 9 Nm
29. Bolt
    • 9 Nm
30. Upper Coolant Pipe
    • Removing and installing, refer to UPPER COOLANT PIPE 
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 Pipe
   • To the cylinder heads
5. Coolant Hose
   • From the exhaust gas recirculation coolant thermostat
6. Seal
   • Replace
7. Bleeder Screw
   • 9 Nm
8. Engine Cover Bolt
   • Tightening specifications, refer to Removal and Installation
9. Upper Left Coolant Pipe
   • Removing and installing - vehicles built through 05.10, refer to LEFT UPPER COOLANT PIPE, VEHICLES BUILT THROUGH 05.10 
   • Removing and installing - vehicles built from 06.10, refer to LEFT UPPER COOLANT PIPE, VEHICLES BUILT FROM 05.10 
10. Bolt
    • 9 Nm
11. Left Rear Coolant Pipe
    • Removing and installing, refer to LEFT REAR COOLANT PIPE 
12. Bolt
    • 9 Nm
13. Bolt
    • 9 Nm
14. Bolt
    • 9 Nm
15. Left Coolant Pipe
    • Removing and installing, refer to LEFT COOLANT PIPE 
16. Bolt
    • 9 Nm
17. O-ring
    • Replace