Cooling System Components - Engine Side, Assembly Overview
Cooling System Components on Engine Assembly Overview
Part 1
1. Cylinder block
2. Oil cooler
3. 25 Nm
4. 10 Nm
5. To heater core of heater, bottom
6. Retaining clip
7. O-ring
^ Replace
8. Front coolant line
9. O-ring
^ Replace
10. Coolant line
11. Connecting hose
12. Connecting piece
13. To radiator, bottom
14. 5 Nm
15. O-ring
^ Replace
16. Coolant thermostat
^ Note installation position:
- Valve must be at top
^ Checking: Heat up thermostat in water
- Starts to open: approx. 87 degree C End of opening: approx. 102 degree C Open distance: at least 7 mm
17. Seal
^ Replace
18. 25 Nm
19. Coolant thermostat housing
20. Seal
^ Replace
21. Bracket for assemblies
22. 10 Nm
23. Coolant pump
24. O-ring
^ Replace
25. Connecting hose
26. To expansion tank, bottom
Part 2
1. Pipe connection
^ Pressed in cylinder head
- If necessary, remove coolant deposits using a copper wire brush or fine sandpaper (minimum 100 grit).
2. Circlip
3. Seal
4. To expansion tank, top
5. Rear coolant pipe
6. 10 Nm
7. To heater core, top
8. Supply hose
9. Bypass thermostat
^ Only for vehicles with automatic transmission
10. To ATF cooler
^ Only for vehicles with automatic transmission
11. Supply hose
12. From heater core, bottom
13. From ATF cooler
^ Only for vehicles with automatic transmission
14. Return hose
15. Coolant line
16. To coolant regulator housing
17. Coolant distribution housing
18. Supply hose
19. To top of radiator
20. Coolant hoses
^ Only for Throttle Valve Control Module J338 heated by coolant
21. Throttle valve control module J338
^ Connection only for coolant heated Throttle Valve Control Module J338
22. Engine Coolant Temperature (ECT) Sensor G62
23. O-ring
^ Replace
24. Retaining clip
Bypass thermostat - assembly overview
1. Spring bracket
2. Lower part of housing
- Note installation position: Arrow points toward ATF cooler
3. Operating element
4. Spring
5. O-ring
6. Upper part of housing
Checking bypass thermostat
- Remove operating element - 3 - and heat in a hot water bath.
- Starts to open: approx. 75 degree C
- Opening end: approx. 85 degree C
- Opens: approx. 5 mm