3. Camshaft Timing Chain Adjustment

Camshaft Timing Chain Adjustment

Special Tools
* EN-952 - Fixing Pin
* EN-953-A - Fixing Tool
* EN-49977-100 - Transmitter Disc Fixation

For equivalent regional tools, refer to Special Tools Tools and Equipment.

1. Remove the ignition coil. Refer to Ignition Coil Removal 15. Ignition Coil Removal.
2. Remove the camshaft cover. Refer to Camshaft Cover Removal 16. Camshaft Cover Removal.
3. Remove the air conditioning compressor bracket. Refer to Air Conditioning Compressor Bracket Removal 9. Air Conditioning Compressor Bracket Removal.
4. Remove the camshaft position actuator solenoid valves. Refer to Camshaft Position Actuator Solenoid Valve Removal 17. Camshaft Position Actuator Solenoid Valve Removal.




5. Rotate the engine clockwise until the bore (2) in the crankshaft balancer aligns with the mark (1) on the engine front cover.




6. Remove the crankshaft bearing cap tie plate hole plug (2) and the seal ring (1).





Caution: To ensure proper crankshaft top dead center (TDC) alignment, the retention pin should fit easily through the bore in the crankshaft tie plate and into the crankshaft. Binding of the retention pin could affect proper engine timing.

7. Install EN-952 - fixing pin (1) in order to fix the crankshaft in TDC position.




8. Loosen the intake camshaft sprocket bolt (2) while holding up the hexagon of the intake camshaft with a spanner (1) until the camshaft position exciter wheel is clearly rotatable.
9. Loosen the exhaust camshaft sprocket bolt while holding up the hexagon of the exhaust camshaft with a spanner until the camshaft position exciter wheel is clearly rotatable.





Note: The fixing tool should be installed completely to both camshaft grooves without high effort.

10. Adjust camshafts that EN-953-A - fixing tool (1) can be installed.




11. Remove 2 upper timing chain guide bolts (1).
12. Remove upper timing chain guide (2).





Note: Push the fixing tool in the direction of the arrow to ensure it engages without clearance.

13. Install EN-49977-200 - fixing tool (2) and adjust that the gearing (1) of the fixing tool engages with the intake camshaft sprocket gearing (1).




14. Tighten the 2 fastening bolts (1) of EN-49977-200 - fixing tool while pushing the fixing tool in direction of the arrow.
15. Tighten the adjuster bolt (2).





Note: A wrong installation position is possible. Make sure that the fixation tool is installed without clearance to the cylinder head in areas (3) and (5).

16. Install EN-49977-100 - fixation (2) in order to find and fix the correct position of the camshaft position exciter wheels.
17. Tighten the 3 fastening bolts (6) of EN-49977-100 - fixation.

Caution: Refer to Fastener Caution Fastener Caution.

18. Tighten the intake camshaft sprocket bolt (4) while holding up the hexagon (1) of the intake camshaft to 50 Nm (37 lb ft).
19. Tighten the intake camshaft sprocket bolt (4) while holding up the hexagon (1) of the intake camshaft to an additional 60°.
20. Tighten the exhaust camshaft sprocket bolt while holding up the hexagon of the exhaust camshaft to 50 Nm (37 lb ft).
21. Tighten the exhaust camshaft sprocket bolt while holding up the hexagon of the exhaust camshaft to an additional 60°.
22. Remove EN-49977-100 - transmitter disc fixation and EN-49977-200 - fixing tool.




23. Install upper timing chain guide (2).
24. Install 2 upper timing chain guide bolts (1) and tighten to 8 Nm (71 lb in).
25. Remove EN-953-A - fixing tool.
26. Remove EN-952 - fixing pin.
27. Rotate the crankshaft for 720° and check the engine timing again. Repeat the adjustment procedure if necessary.
28. Install crankshaft bearing cap tie plate hole plug and seal ring and tighten to 40 Nm (30 lb ft).
29. Install the camshaft position actuator solenoid valves. Refer to Camshaft Position Actuator Solenoid Valve Installation 59. Camshaft Position Actuator Solenoid Valve Installation.
30. Install the camshaft cover. Refer to Camshaft Cover Installation 60. Camshaft Cover Installation.
31. Install the ignition coil. Refer to Ignition Coil Installation 61. Ignition Coil Installation.
32. Install the air conditioning compressor bracket. Refer to Air Conditioning Compressor Bracket Installation 68. Air Conditioning Compressor Bracket Installation.