3.0L - Cooling System - Engine Code(s): Cata: Overview Audi Q7 4L facelift

COOLANT PIPES OVERVIEW

Part 1

Scheme 70

1. O-ring Replace
2. Nut 9 Nm
3. Right Coolant Pipe Removing and installing, refer to «RIGHT COOLANT PIPE»(ref-491732-S15174083042012073100000)
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»(ref-491732-S04116017562012073100000)
13. Bolt Tightening specifications, refer to «Description and Operation»(ref-491734-S39462595302012073100000)
14. Engine Cover Bolt Tightening specifications, refer to «FASTENER TIGHTENING SPECIFICATIONS»(ref-491734-S23403312292012073100000)
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»(ref-491732-S27784610542012073100000)
19. O-rings Replace Note the different diameter
20. Rear Coolant Pipe Removing and installing, refer to «REAR COOLANT PIPE»(ref-491732-S21359686342012073100000)
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»(ref-491732-S10612503912012073100000)
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»(ref-491732-S35286774702012073100000)
28. Bolt 9 Nm
29. Bolt 9 Nm
30. Upper Coolant Pipe Removing and installing, refer to «UPPER COOLANT PIPE»(ref-491732-S03122676382012073100000)
31. Nut 9 Nm
32. O-ring Replace

Part 2

Scheme 71

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»(ref-491734-S09721922402012073100000)
9. Upper Left Coolant Pipe Removing and installing - vehicles built through 05.10, refer to «LEFT UPPER COOLANT PIPE, VEHICLES BUILT THROUGH 05.10»(ref-491732-S19266499562012073100000) Removing and installing - vehicles built from 06.10, refer to «LEFT UPPER COOLANT PIPE, VEHICLES BUILT FROM 05.10»(ref-491732-S00364973272012073100000)
10. Bolt 9 Nm
11. Left Rear Coolant Pipe Removing and installing, refer to «LEFT REAR COOLANT PIPE»(ref-491732-S26811227152012073100000)
12. Bolt 9 Nm
13. Bolt 9 Nm
14. Bolt 9 Nm
15. Left Coolant Pipe Removing and installing, refer to «LEFT COOLANT PIPE»(ref-491732-S38821638542012073100000)
16. Bolt 9 Nm
17. O-ring Replace

RADIATOR OVERVIEW

Vehicles Built through 05.10

Scheme 72

1. Hydraulic Oil Cooling Line For power steering
2. Condenser For air conditioning system
3. Retaining Clips Make sure it is secure
4. Coolant Pipe For the fuel system coolant circuit
5. Bolt 8 Nm
6. Coolant Hose For the fuel system coolant circuit
7. Bolt 8 Nm
8. Sleeve
9. Grommet
10. Fuel System Cooler Removing and installing, refer to «FUEL SYSTEM COOLER, VEHICLES BUILT THROUGH 05.10»(ref-491732-S10225119022012073100000) Change coolant after replacing
11. Bleeder Screw 1.5 to 3 Nm
12. Cover
13. Radiator Removing and installing, refer to «RADIATOR»(ref-491732-S24860887482012073100000) Change coolant after replacing
14. Grommet
15. Bolt 5.5 Nm
16. O-ring Replace
17. Coolant Hose Lift the retaining clamp to remove Connect to the radiator (Scheme 74)
18. Clip Make sure it is secure
19. Engine Coolant Temperature Sensor on Radiator -G83- Removing and installing, refer to «ENGINE COOLANT TEMPERATURE SENSOR ON RADIATOR»(ref-491732-S14094157292012073100000)
20. O-ring Replace
21. Coolant Hose
22. Coolant Hose Lift the retaining clamp to remove Connect to the radiator (Scheme 74)
23. O-ring Replace
24. Rubber Buffer
25. Retainer For the cooler mount
26. Washer
27. Clip Make sure it is secure
28. ATF Cooler For automatic transmission Removing and installing, refer to «RADIATOR»(ref-491732-S24860887482012073100000) Change coolant after replacing
29. Bolt 8 Nm
30. Air Duct Only the left air duct is shown in the illustration
31. Bolt 2.5 Nm
32. Bolt 8 Nm

Vehicles Built from 06.10

Scheme 73

1. Hydraulic Oil Cooling Line For power steering
2. Condenser For air conditioning system
3. Retaining Clips Make sure it is secure
4. Radiator Removing and installing, refer to «RADIATOR»(ref-491732-S24860887482012073100000) Change coolant after replacing
5. Grommet
6. Bolt 5.5 Nm
7. O-ring Replace
8. Coolant Hose Lift the retaining clamp to remove Connect to the radiator (Scheme 74)
9. Clip Make sure it is secure
10. Engine Coolant Temperature Sensor (on Radiator) -G83- Removing and installing, refer to «ENGINE COOLANT TEMPERATURE SENSOR ON RADIATOR»(ref-491732-S14094157292012073100000)
11. O-ring Replace
12. Coolant hose
13. Coolant Hose Lift the retaining clamp to remove Connect to the radiator (Scheme 74)
14. O-ring Replace
15. Rubber Buffer
16. Retainer For the cooler mount
17. Washer
18. Clip Make sure it is secure
19. ATF Cooler For automatic transmission Removing and installing, refer to «RADIATOR»(ref-491732-S24860887482012073100000) Change coolant after replacing
20. Bolt 8 Nm
21. Air Duct Only the left air duct is shown in the illustration
22. Bolt 2.5 Nm
23. Bolt 8 Nm

Scheme 74

Remove the old O-ring -2- in the coolant hose -3-.

Coat the new O-ring with coolant and install it in the coolant hose.

Press the coolant hose onto the connection -1- until it engages audibly.

Press the coolant hose on again and pull to make sure the connection is engaged correctly.

Scheme 75

1. Coolant Fan -V7- with Coolant Fan Control Module -J293- Removing and installing, refer to «COOLANT FAN»(ref-491732-S33081731452012073100000)
2. Coolant Fan 2 -V177- with Coolant Fan Control Module 2 -J671- Removing and installing, refer to «COOLANT FAN»(ref-491732-S33081731452012073100000)
3. Fan Rib Removing and installing - vehicles built through 05.10, refer to «FAN SHROUD, VEHICLES BUILT THROUGH 05.10»(ref-491732-S18225830982012073100000) Removing and installing - vehicles built from 06.10, refer to «FAN SHROUD, VEHICLES BUILT FROM 06.10»(ref-491732-S31425652152012073100000)
4. Bolt 10 Nm
5. Bolt 10 Nm