Cooling System Components Assembly Overview, Engine Side

Cooling system components, engine side





1. Pressure cap
- Check with V.A.G 1274 test instrument and V.A.G 1274/9 adapter
- Test pressure 1.4 - 1.6 bar
2. O-Ring
- Replace if damaged
3. Coolant recovery bottle
- Check for leaks in cooling system using V.A.G 1274 test instrument and V.A.G1274/8 adapter
4. 10 Nm
5. Upper coolant pipe
- Clipped into the bulkhead
- Coolant hoses, connection diagram
6. To heat exchanger
- Coolant hoses, connection diagram
7. Throttle valve control unit (J338)
- Heated by coolant
8. To upper coolant hose
- Coolant hoses, connection diagram
9. To upper radiator
- Coolant hoses, connection diagram
10. Gasket
- Replace
11. To lower radiator
- Coolant hoses, connection diagram
12. Thermostat housing
- Disassembling and assembling
13. Coolant feed pump (V51)
- Check
14. From heat exchanger
- Coolant hoses, connection diagram
15. 25 Nm
16. Oil cooler
- Coat contact surfaces outside of sealing ring with AMV 188 001 02
- Ensure free movement among surrounding components
17. Screw plug
18. Coolant pipe
- Coolant hoses, connection diagram
19. Coolant pump
- Observe install position
- Check for smooth running
- Replace completely if damaged or if leaking
- Removing and installing
20. 15 Nm
21. Pulley
- For coolant pump
22. 25 Nm
23. To Y-branch of heat exchanger/coolant feed pump Coolant hoses, connection diagram

Coolant hoses, connection diagram





1. Coolant recovery bottle
2. Upper coolant pipe
3. Throttle valve control unit (J338)
4. Heat exchanger for heating
5. Check valve
6. Coolant feed pump (IJ51)
7. ATF radiator Only vehicles with automatic transmission
8. Upper coolant hose
9. Radiator
10. Lower coolant hose
11. Thermostat housing
12. Lower coolant pipe
13. Oil cooler
14. Auxiliary radiator
15. Coolant pump
16. Cylinder block
17. Cylinder head