Cylinder head removal & torque: Opel AstraG (X20DTL, Y20DTH, Y20DTL, Y22DTR)

🧭 Before you start

Fits: platform codes 2.0, DTI, 16V, |, DI, TD, 2.2

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

Don't miss

• Remove the alternator but do not disconnect

🔧 Engine codes this applies to

📐 42 workshop diagrams for X20DTL

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

📋 Procedure

Preparation and removal

1. Before disconnecting the battery cable, check the audio system security code
2. Further refitting is in the reverse order of removal
3. Remove the vacuum pump
4. Oil feed line/cylinder block
5. Fuel lines

6. Loosen the V-belt tensioner
7. Drain the cooling system
8. Disconnect the upper radiator hose
9. Remove the oil temperature sensor wire
10. Disconnect the EGR vacuum hose
11. Disconnect the injection pump fuel lines
12. Disconnect the vacuum hose
13. Disconnect the turbo oil lines from the cylinder block
14. Disconnect the engine wiring loom at the back of the engine
15. Disconnect the vacuum hose from the turbocharger actuator
16. Disconnect the coolant hoses from the cylinder head
17. Remove the alternator but do not disconnect
18. Remove the chain tensioner
19. Remove the chain guide(s)
20. Note: Heat the screws
21. Remove the camshaft locking tool
22. Remove the camshaft gearwheel
23. Remove the cylinder head bolts
24. Remove the cylinder head bolts
25. Remove the cylinder head

Installation and checks

26. Fit the cylinder head gasket
27. Check the gasket thickness
28. Fit the cylinder head
29. Stage 3:
30. Chain tensioner
31. Remove the camshaft locking tool
32. Fit the camshaft gearwheel
33. Align the camshaft
34. Camshaft locking tool:
35. Use a special tool:
36. Fit the crankshaft locking tool
37. Check the timing marks on the injection pump side
38. Note: The injection pump locking tool can be removed by sliding fit
39. Refit the chain guide(s)
40. Renew the ring
41. Check the timing marks again
42. Remove all the locking tools

Other OPEL / VAUXHALL procedures

• Opel Zafira 2.0 TD X20DTL timing chain replacement
• Opel Vectra B L 2.0 TD X20DTH/X20DTL timing chain replacement
• Astra G F13/F13+/F17/F17+/F18 Gearbox
• Zafira A F23 Gearbox
• Astra G Clutch
• Opel Corsa C 1.2 CDTI timing chain replacement
• Opel Astra G 2.2 DTI Y22DTR timing chain replacement
• Opel VectraC, Signum 2.8 Z28NEL timing chain replacement
• Opel Astra G 2003 2.0 DTI Y20DTH timing chain replacement
• Opel Astra G X Y 20DTL 2.0 DTI X20DTL timing chain replacement