Cooling System: Locations

Thermostat Location






- The thermostat is mounted in the housing and located on the rear of the cylinder head.

Components





1. Coolant pipe
- Secured to exhaust gas manifold together with heat shield.

2. 10 Nm

3. To heat exchanger

4. From heat exchanger

5. Throttle Valve Control Module -J338-
- Heated by coolant.

6. Cable guide
- For coolant hoses and wiring harness.

7. 8 Nm

8. Upper coolant hose
- To top off radiator.
- Check for secure seating.

9. Bracket
- For wiring harness.

10. Lower coolant hose
- From bottom of radiator.
- Check for secure seating.

11. To cylinder block

12. After-Run Coolant Pump -V51-
- Secured to cylinder block by a bracket.

13. Oil cooler

14. O-ring
- Replace.

15. From cylinder block

16. Coolant pipe

17. Sealing plug, 2 Nm

18. Coolant pump
- Observe installation position.
- Check for ease of movement.
- If damaged or leaking replace complete.

19. 20 Nm

20. Belt pulley
- For coolant pump.

21. 20 Nm
- Use Water Pump Wrench -VAG 1590- to loosen and tighten.

22. 25 Nm

23. Expansion tank
- Perform leak test on cooling system with Cooling System Tester -VAG 1274- and Adapter -VAG 1274/8-.
- Test pressure: 1.4 to 1.6 bar.

24. Seal
- Replace if damaged.

25. Sealing Cap
- Check with Cooling System Tester -VAG 1274- and Adapter -VAG 1274/9-.
- Pressure relief valve must open at a pressure of 1.5 to 1.6 bar.

26. Seal
- Replace.

27. Thermostat housing