Timing Chain: Service and Repair

REMOVAL PROCEDURE

- Tools Required
- J 5825-A Crankshaft Sprocket Remover.





1. Remove the engine front cover and the crankshaft position reluctor ring.

IMPORTANT: Once the engine front cover is removed, do not re-install it.
Always install a NEW engine front cover.

2. Rotate the crankshaft until:
- The number one cylinder is at Top Dead Center (TDC) of the compression stroke.
- The timing marks on both sprockets line up.





3. Remove the camshaft sprocket bolts.
4. Remove the camshaft sprocket and the timing chain.





5. Use the J 5825-A in order to remove the crankshaft sprocket.
6. Remove the crankshaft sprocket key if necessary.
7. Inspect all parts for wear or damage. Refer to Valve Litters and Guides Clean and Inspect under Engine Unit Repair.

INSTALLATION PROCEDURE

- Tools Required
- J 5590 Crankshaft Sprocket Installer





1. Install the key into the crankshaft, if removed.





2. Use the J 5590 and a hammer in order to install the crankshaft sprocket.





3. Make sure that the number 1 piston is still at TDC of the compression stroke.
4. Align the timing marks on both sprockets.





5. Install the camshaft sprocket and the timing chain.
The sprockets must mesh in order to prevent damage to the camshaft retainer.
6. Install the camshaft sprocket bolts.
- Tighten the bolts to 25 Nm (18 ft. lbs.).

NOTICE: Refer to Fastener Notice in Service Precautions.

7. Be sure to align the camshaft and the crankshaft sprocket alignment marks.
8. Install the crankshaft position reluctor ring and the engine front cover.