Timing Components: Service and Repair

Timing Drive Components Removal and Installation

Special Tool(s):

Removal

Caution: Since the engine is not free-wheeling, timing procedures must be followed exactly or piston and valve damage can occur.

1. Remove the engine front cover,






2. Remove the crankshaft sensor ring from the crankshaft.






3. Disconnect the eight ignition coil electrical connectors






4. Remove the bolts and the eight ignition coils.

Note: Use compressed air to remove any foreign material from the spark plug wells before removing the spark plugs.






5. Remove the spark plugs.






6. Position the lobe of the camshaft up.






7. Install the special tool between the valve spring coils to prevent valve stem seal damage.

Note: The roller followers are positional. Mark the followers for installation in their original locations.






8. Use the special tool to compress the valve spring and remove the camshaft roller followers.






9. Position the crankshaft with the keyway at the 10 o'clock position.






10. Remove the timing chain tensioning system from both timing chains.
1. Remove the bolts.
2. Remove the timing chain tensioners.
3. Remove the timing chain tensioner arms.






11. Remove the LH and RH timing chains and the crankshaft sprocket.
- Remove the RH timing chain from the camshaft sprocket.
- Remove the RH timing chain from the crankshaft sprocket.
- Repeat for the LH timing chain and the crankshaft sprocket.






12. Remove the timing chain guides.
1. Remove the bolts.
2. Remove the LH timing chain guide.
3. Remove the bolts.
4. Remove the RH timing chain guide.

Note: RH shown, LH similar.






13. Install the special tool.

Note: RH shown, LH similar.






14. Remove the bolt and the camshaft gear.

Installation

Caution: The timing chain procedure must be followed exactly or damage to valves and pistons will result.

Caution: Do not compress the ratchet assembly. This will damage the ratchet assembly.

Note: LH shown, RH similar.






1. Compress each tensioner plunger, using an edge of a vise.






2. Using a small screwdriver or pick, push back and hold the ratchet mechanism.






3. While holding the ratchet mechanism, push the ratchet arm back into the tensioner housing.






4. Install a paper clip into the hole of each tensioner to hold the ratchet assembly and plunger in during installation.
- Remove the tensioner from the vise.






5. If the copper link are not visible, mark one link on one end and one link on the other end, and use as timing marks.






6. Install the camshaft sprockets and new bolts. Tighten the bolts in two stages.
- Stage 1: Tighten the bolt to 40 Nm ( 30 lb Ft ).
- Stage 2: Tighten the bolt an additional 90 ° ( 1/4 ).






7. Using the special tool, position the crankshaft so the number one cylinder is at top dead center (TDC).

Note: The crankshaft sprockets are identical. They can only be installed one way. Refer to the following illustration for the correct crankshaft sprocket installation.






8. If removed, install the LH and RH crankshaft sprockets.
1. Timing marks aligned.
2. Keyways aligned.






9. Install the timing chain guide.
1. Position the LH timing chain guide.
2. Install and tighten the LH bolts.
3. Position the RH timing chain guide.
4. Install and tighten the RH bolts.






10. Rotate the RH camshaft sprocket until the timing mark is approximately at the 11 O'clock position. Rotate the LH camshaft sprocket until the timing mark is approximately at the 12 o'clock position.






11. Position the LH (inner) timing chain on the crankshaft sprocket, aligning the copper (marker) link with the timing mark on the sprocket.






12. Install the LH timing chain on the sprocket, aligning the copper (marked) link with the timing marks on the sprocket.

Note: The LH timing chain tensioner arm has a bump near the dowel hole for identification.






13. Position the LH timing chain tensioner arm on the dowel pin and install the LH timing chain tensioner.






14. Remove the retaining clip from the LH timing chain tensioner.






15. Position the RH (outer) timing chain on the crankshaft sprocket, aligning the copper (marked) link with the timing mark on the sprocket.






16. Install the RH timing chain on the camshaft sprocket, aligning the copper (marked) link with the timing marks on the sprocket.






17. Position the RH timing chain tensioner arm on the dowel pin and install the RH timing chain tensioner.






18. Remove the retaining clip from the RH timing chain tensioner.






19. Make sure that the copper (marked) chain links are lined up with the dots on the crankshaft sprocket and the camshaft sprockets.






20. Rotate the camshaft until the lobe is in the up position.






21. Install the special tool between the valve spring coils to prevent valve stem seal damage.

Note: Lubricate the camshaft roller followers using clean engine oil.






22. Install the camshaft roller followers.
1. Install the special tool.
2. Compress the valve spring.
3. Install the camshaft roller followers in their original location.






23. Install the eight spark plugs.






24. Install the eight ignition coils and bolts.






25. Connect the eight ignition coil electrical connectors.






26. Install the crankshaft sensor ring on the crankshaft.
27. Install the engine front cover.