Replacing camshafts (Opel Insignia A)

Removal

1. Remove the left cylinder head cover.

2. Remove the camshaft position sensors.

3. Remove the electromagnetic valves of the phase shifters.

4. Turn the crankshaft by the crankshaft balancer pulley bolt to set the camshafts to the neutral position. The flat surfaces of the camshafts must be in line (1).

Caution: Turn the crankshaft pulley clockwise only.

5. Loosen the camshaft phase shifter bolt.

Note.

• Use an open-end wrench on the camshaft hex to prevent the engine from turning.
• At this stage, do not completely unscrew the camshaft phase shifter bolt.

6. Unscrew the EN-48313 drive chain locking device so that its claws are removed.



7. Insert the EN-48313 tool between the camshaft phase actuators behind the timing chain so that the lower line on the tool body (2) aligns with the upper surface of the cylinder head (1). This is the approximate installation position.

Note: The illustrations below show the front engine cover removed for clarity, but it is not necessary to remove the front engine cover.

8. Left cylinder head:

• Make sure that the heel (4) of the tool's foot is facing the front of the engine.

• Partially release the legs (1, 3) of the EN-48313 device by turning the T-handle clockwise,
• Insert the paw of the device (1) behind the guide (2) of the drive chain.
• Continue to release the EN-48313 tool until the legs (1, 3) touch the drive chain, then release tension.

Note: Ensure that the EN-48313 tool lug (1) is inserted into the recess of the link to prevent it from slipping when tightening the EN-48313 tool.

• Hand tighten the EN-48313 fixture.
• Using an open-end wrench, turn the camshafts by the hexagons towards each other to create a slight slack in the chain between the phase shifters.
• The EN-48313 fixture is now securely installed to hold the drive chain in position.

9. Right cylinder head:

• Make sure that the heel (2) of the tool's foot is facing the front of the engine.

• Partially release the jaws (1) of the EN-48313 device by turning the T-handle clockwise.
• Continue to release the EN-48313 tool until the legs (1) touch the drive chain, then release tension.

Note: Ensure that the EN-48313 tool lug (1) is inserted into the recess of the link to prevent it from slipping when tightening the EN-48313 tool.

• Hand tighten the EN-48313 fixture.
• Using an open-end wrench, turn the camshafts by the hexagons towards each other to create a slight slack in the chain between the phase shifters.
• The EN-48313 fixture is now securely installed to hold the drive chain in position.

10. Apply marks to indicate the relative positions of the drive chain and phase shifters.

Note: Ensure that the camshaft timing chain and phase shifters are aligned correctly for proper assembly.

11. Loosen the phase shifter bolt.

12. Remove the camshaft.

Installation

Note.

• Make sure that the timing marks on the phase shifters and drive chain match
• Do not tighten the phase shifter bolt at this stage.

1. Place the camshaft into the cylinder head and install the phase shifter.



2. Install the camshaft bearing caps.

3. Remove the EN-48313 drive chain locking device.

4. Install and tighten the phase shifter bolts.

Note: Use an open-end wrench on the camshaft hex to prevent the engine from turning.

5. Install the electromagnetic phase shifter valve.

6. Install the camshaft position sensor.

7. Install the cylinder head cover.