Timing belt replacement: Opel Vivaro (G9U-730)

🧭 Before you start

• Opens: fuel
• Timing position: the crankshaft or camshaft is set and locked during this job
• Special tools named: locking pin

Don't miss

• The engine must be cold before timing belt adjustment
• Loosen the camshaft gearwheel bolts slightly but ensure the gearwheel can rotate freely
• The tensioner mark should be in the position shown

🔧 Engine codes this applies to

📐 22 workshop diagrams for G9U-730(B7)

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

Preparation and removal

1. Disconnect the battery
2. Remove the air filter
3. Engine support:
4. Remove the dipstick
5. Check the belt(s) for cracks, fraying, wear and oil contamination

6. Note: The engine must be cold before timing belt adjustment
7. Disconnect the fuel line from the fuel filter
8. Remove the engine lower cover
9. Remove the lifting eye
10. Remove the engine support
11. Turn the crankshaft to TDC for cylinder 1
12. Check the position of the crankshaft pulley
13. Loosen the camshaft gearwheel bolts slightly but ensure the gearwheel can rotate freely
14. Align the camshaft flat surfaces vertically
15. Remove the oil filter bolt
16. Loosen the tensioner pulley, keeping it steady with an Allen key
17. Turn the crankshaft slowly to TDC and lock it
18. Remove the timing belt lower cover
19. Exhaust:
20. Loosen the camshaft gearwheel bolts slightly but ensure the gearwheel can rotate freely

Installation and checks

21. Fit the idler pulley
22. Fit the tensioner pulley
23. Pre-tension the timing belt
24. Turn the tensioner anti-clockwise
25. Align the moveable section of the special tool with the main section
26. Refit the front right splash guard
27. Remove the camshaft locking tools
28. Align the moveable section of the special tool with the main section
29. The tensioner mark should be in the position shown
30. Tighten the camshaft gearwheel bolts
31. Refit the timing belt upper cover
32. Inlet:
33. Refit the engine support bracket
34. Refit the engine support
35. Refit the air hose between the turbo and the intercooler
36. Renew the oil seal(s)
37. Remove the crankshaft locking pin
38. Fit the oil filter bolt
39. Remove the engine support tool
40. Reconnect the fuel filter
41. Refit the power steering reservoir
42. Refit the intercooler
43. Refit the air filter
44. Refit the front right splash guard
45. Refit the front right wheel
46. Refit the engine cover
47. Reconnect the battery earth cable

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