One of the most famous and well known features of the Volkswagen engine throughout its life has been the fact that it is air cooled. The advantage are obvious – none of the problems and cost of maintaining a water cooling system with the attendant problems of extreme temperatures. There are certain disadvantages of an air cooled system however – there is greater engine noise, more engine power used to drive the cooling fan and a less precise control of engine temperatures. Air cooled engines are not the best in dense traffic in hot weather. Great care must also be taken to ensure that the lubrication system is not neglected as the engine oil plays a more significant part in engine cooling.

1968 – 1979 VW 1600 Transporter Fan Housing and Thermostat

1968 - 1979 VW 1600 Transporter Fan Housing and Thermostat

1. Pulley securing bolt
2. Dished washer
3. Crankshaft pulley
4. Pulley nut
5. Washer
6. Pulley – rear half
7. Spacer washer
8. Vee belt
9. Pulley – front half
10. Woodruff key
11. Generator
12. Nut
13. Generator strap
14. Bolt
15. Bolt
16. Lock washer
17. Outer fan cover
18. Reinforcement flange
19. Inner fan cover
20. Lockwasher
21. Nut
22. Fan hub
23. Shim
24. Fan
25. Lockwasher
26. Special nut
27. Fan housing
28. Washer
29. Cheese head screw
30. Return spring
31. Spring
32. Washer
33. Cooling air regulator, left
34. Cooling air regulator, right
35. Regulator connecting rod
36. Washer
37. Cheese head screw
38. Lockwasher
39. Washer
40. Connecting rod
41. Thermostat bracket
42. Thermostat
43. Lockwasher
44. Bolt

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