41. Timing Chain and Sprocket Clean and Inspect

Timing Chain and Sprockets Cleaning and Inspection





1. Clean the components with cleaning solvent.

Caution: Refer to Safety Glasses Caution in Service Precautions.

2. Dry the components with compressed air.
3. Inspect the timing chain for binding or wear.





4. Inspect the camshaft and crankshaft sprockets for:
^ Worn teeth (1)
^ Damaged teeth (2)
^ Chipped teeth (3)
^ Worn valleys between the sprocket teeth





5. Inspect the crankshaft sprocket keyway for wear.
6. Inspect the crankshaft sprocket oil pump drive splines for wear.





7. Inspect the chain guide (232) for the following conditions:
^ Loose metal inserts (1)
^ Cracking (2) in the chain contact area
^ Excessive grooves (3) in the chain contact area
Grooves 1 mm (0.040 inch) or less in depth are to be considered normal wear.