Contents Wiring diagrams Section: DOHC Petrol Engine All sections

How to Check the Timing Opel Astra H

DOHC Petrol Engine 4 illustrations ~264 words

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KM-6148

Remove

  1. 1. Open bonnet
  2. 2. Remove engine cover
  3. 3. Remove air cleaner housing (4) • If present: unclip bonnet contact switch (1) • Unscrew bolt (2) • Unclip tank vent line (3) • Release and disconnect wiring harness plug of hot film mass air flow meter (7) – Unclip wiring harness (6) from bracket • Detach intake pipe – Loosen clamp (5)
  1. 4. Detach cylinder head cover
  2. 5. Raise vehicle by its full height
  3. 6. Remove lower engine compartment cover (2) • Unscrew 4x bolts (1) • Remove 2x body-bound rivets (3)
  1. 7. Adjust ignition TDC of cylinder 4 • Place crankshaft on marking

Note. Rotate crankshaft slowly and evenly in direction of engine rotation.

Note. In this position, the cams of cylinder 4 (1 and 2) must point upwards

  1. 8. Lower vehicle by its full height
  2. 9. Timing, Check • Use KM-6148 (1) – Tighten 2 bolts (3) • Push locating bolt (2) in camshaft sprocket holes provided

Note. If sliding in the locating bolt is not possible, the timings must be adjusted.

Install

  1. 10. Remove KM-6148
  2. 11. Attach cylinder head cover
  3. 12. Install air cleaner housing • Install intake pipe – Tighten clamp 3.5 Nm • Attach wiring harness • Connect and lock wiring harness plug of hot film mass air flow meter • Clip in fuel evaporation hose
  4. 13. Attach engine cover
  5. 14. Raise vehicle by its full height
  6. 15. Attach lower engine compartment cover • Tighten 4x bolts • Install 2x body-bound rivets
  7. 16. Lower vehicle by its full height
  8. 17. Close bonnet