Tools Required

J 22888-20A Crankshaft Gear Remover.

1. Remove the engine front cover. Refer to Engine Front Cover Replacement .




Important: Make sure the camshaft sprocket alignment mark, which is an 8 mm hole, and the stamped circle in the crankshaft sprocket align with tabs on the timing chain tensioner.

2. Rotate the crankshaft until the number 1 piston is at Top Dead Center (TDC) of the compression stroke.



3. Remove the camshaft timing chain tensioner bolts.



4. Remove the camshaft timing chain, tensioner and camshaft sprocket at the same time.



5. Use the J 22888-20A in order to remove the crankshaft sprocket.
6. Remove the crankshaft sprocket key, if necessary.

Tools Required

J 5590 Crankshaft Gear Installer.

Important: If any of the camshaft drive components are being replaced to correct a noise condition, replace all of the components in the camshaft drive system.

1. Install the crankshaft sprocket key, if removed.
2. Install the crankshaft sprocket with the timing mark facing away from the engine, using J 5590 and a hammer.

Make sure that the crankshaft sprocket is seated against the crankshaft.




3. Compress the timing chain tensioner spring.
4. Insert a cotter pin or a nail into the hole in the tensioner in order to retain the timing chain tensioner shoe.




Important: Do not tighten the timing chain tensioner bolts.

5. Install the timing chain tensioner.



6. Align the crankshaft sprocket timing mark, the stamped circle, with the tab on the timing chain tensioner.
7. Align the camshaft sprocket timing mark, the 8 mm hole, with the tab on the timing chain tensioner.
8. Install the camshaft sprocket and the 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.

9. Install the camshaft sprocket bolt.

Tighten

1. Tighten the timing chain tensioner bolts to 24 N·m (17 lb ft).
2. Tighten the camshaft sprocket bolt to 130 N·m (96 lb ft).



10. Remove the cotter pin or nail from the hole in the timing chain tensioner.
11. Install the engine front cover. Refer to Engine Front Cover Replacement .