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Contents Wiring diagrams Section: DOHC Petrol Engine All sections

How to Adjust the Timing Opel Astra G

DOHC Petrol Engine 9 illustrations ~580 words

Remove

  1. 1. Open bonnet
  2. 2. Disconnect battery
  3. 3. Remove air cleaner housing (5) and air intake manifold (3) • 1 mass air flow meter wiring harness plug (4) • Unclip tank ventilation hose (1) • 1 fastening bolt (2) • 1 clip
  1. 4. Remove air intake manifold
  2. 5. Detach ribbed V-belt (1) • Mark direction of rotation • Apply tension to the ribbed V-belt tensioner (2) in the direction of the arrow and fix using KM-6130 (3) – Remove ribbed-V-belt
  1. 6. Raise vehicle
  2. 7. Remove engine splash guard (2) • 4 bolts (1)
  1. 8. Block the flywheel • Remove sealing stopper • Insert KM-911 (1)
  1. 9. Remove torsional vibration balancer (5) • 1 bolt (6)
  2. 10. Remove ribbed V-belt tensioner (3) • 1 bolt (4) – Ribbed V-belt tensioner is locked using KM-6130
  3. 11. Remove upper part of toothed belt cover (1) • 2 bolts (2) • Release upper catch (7) • Pull upper part of toothed belt cover upwards by pulling gently on the stalk (arrow)
  1. 12. Remove lower cover of toothed belt (2) • 4 bolts (1)
  1. 13. Set engine to TDC • Remove KM-911 • Tighten bolt on torsional vibration balancer • Turn crankshaft in direction of engine rotation to "1st Cylinder TDC" (III).
  2. 14. Lower vehicle
  3. 15. Fix camshaft timing gears using KM-6340 • Set camshaft timing gears in such a way that the marks are opposite one another • Fix KM-6340-Left to camshaft timing gear inlet • Insert KM-6340-Right (II)
  4. 16. Remove toothed belt • Mark direction of rotation • Apply tension to toothed belt tension roller clockwise with socket wrench and fix with KM-6333 (IV) – Remove toothed belt

Install

  1. 17. Install toothed belt • Position toothed belt – Position toothed belt onto camshaft timing gear outlet – Position toothed belt on camshaft timing gear inlet – Direct toothed belt via the tightening and guiding rollers and position upon toothed belt drive – Apply tension to the toothed belt tension roller and remove KM-6333

Note. Observe direction of rotation

  1. 18. Remove KM-6340
  2. 19. Raise vehicle
  3. 20. Turn crankshaft 720° • 2 revolutions in direction of engine rotation • Set toothed belt drive gear to mark for "1st cylinder TDC" (arrows)
  1. 21. Lower vehicle
  2. 22. Fix camshaft timing gears using KM-6340 • Insert KM-6340-Left (1) • Insert KM-6340-Right (2)

Note. The marks (3) on KM-6340 must be aligned - otherwise remove toothed belt and refit

  1. 23. Remove KM-6340
  2. 24. Raise vehicle
  3. 25. Replace lower toothed-belt cover • 4 bolts – Tightening torque 6Nm
  4. 26. Remove torsional vibration balancer fixing bolt • Block flywheel using KM-911 • Remove fixing bolt
  5. 27. Fit torsional vibration balancer • 1 bolt – Tightening torque 95Nm + 30° + 15°
  6. 28. Remove KM-911 • Insert sealing stopper
  7. 29. Fit ribbed V-belt tensioner • 1 bolt – Tightening torque 50Nm
  8. 30. Insert ribbed V-belt • Apply tension to ribbed V-belt tensioner in an anti-clockwise direction and position ribbed V-belt. • Remove KM-6130

Note. Observe direction of rotation

  1. 31. Install engine splash guard • 4 bolts
  2. 32. Lower vehicle
  3. 33. Fit front toothed belt cover • Upper part • 2 bolts – Tightening torque 6Nm
  4. 34. Fit air intake manifold pipe
  5. 35. Install air cleaner housing and air intake manifold • Place 1 mass air flow meter wiring harness plug • Clip in tank ventilation hose • 1 fastening bolt • 1 clip – Tightening torque 3.5Nm
  6. 36. Connect battery
  7. 37. Programme transient memory
  8. 38. Close bonnet

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