Cooling System Components, Engine Side

Cooling system components - engine side
1. 15 Nm
2. Coolant pump
3. O-ring
^ Always replace
4. Bypass flap
^ For exhaust gas recirculation radiator
5. Radiator
^ For exhaust gas recirculation
6. To top of expansion tank
7. Upper front coolant pipe
8. Connection union
9. Seal
10. Securing clip
^ Check for secure seating
11. Engine Coolant Temperature (ECT) Sensor -G62
^ With Engine Coolant Temperature (ECT) Sensor -G2
12. 10 Nm
13. Heating flange
^ For glow plugs
14. Glow plugs
^ 25 Nm
15. Quick-action coupling
16. To heat exchanger
17. From heat exchanger
18. Distributor
19. To top of radiator
20. Coolant pipe
21. 40 Nm
22. To bottom of expansion tank
23. Transmission oil cooler
24. To bottom of radiator
25. Oil cooler
26. Connection union
^ For thermostat
27. Thermostat
^ Checking: Heat-up thermostat in water
^ Starts to open: approximately 85°C
^ Ends: approximately 105°C
^ Opening stroke: min. 7 mm