Timing Chain: Service and Repair

Camshaft Timing Chain and Sprocket Replacement

Removal Procedure

Tools Required
- J 23523-F Balancer Remover and Installer.
- J 5825-A Crankshaft Gear Remover.






Important: the composite engine front cover is removed, DO NOT reinstall the engine front cover. Always install a NEW engine front cover.

1. Remove the engine front cover. Service and Repair
2. Remove the crankshaft position sensor reluctor ring.






3. Check the timing chain free play.
4. Rotate the crankshaft until:
4.1 The timing marks on both sprockets line up.
4.2 The number four cylinder is at top dead center (TDC) of the compression stroke.






5. Remove the camshaft sprocket bolts.






6. Remove the camshaft sprocket.
7. Remove the camshaft timing chain.






8. Use the J 5825-A in order to remove the crankshaft sprocket.
9. If necessary, remove the crankshaft balancer key.

Installation Procedure

Tools Required
- J 23523-F Balancer Remover and Installer.
- J 5590 Installer.






1. Install the crankshaft balancer key into the keyway in the crankshaft (if removed). The crankshaft balancer key should be parallel to the crankshaft or with the front of the key slightly lower.
2. Align the keyway of the crankshaft sprocket with the crankshaft balancer key.
3. Use the J 5590 and a hammer in order to install the crankshaft sprocket.






Important: Be sure to align the camshaft and the crankshaft sprocket alignment marks.

4. Align the camshaft and crankshaft sprockets timing marks.
5. Look to ensure that the crankshaft sprocket is aligned at the 12 o'clock position and the camshaft sprocket is aligned at the 6 o'clock position.






6. Install the camshaft sprocket and the camshaft timing chain.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

7. Install the camshaft sprocket bolts. Tighten the camshaft sprocket bolts to 25 Nm (18 lb ft).
8. Install the crankshaft position sensor reluctor ring.
9. Install the engine front cover.