Timing Chain and Sprockets Cleaning and Inspection
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Clean the camshaft timing components in solvent.
- Dry the components with compressed air.
- Inspect the camshaft timing chain for binding or wear.
- Inspect the camshaft and crankshaft sprockets for the following conditions:
- Worn teeth (1)
- Damaged teeth (2)
- Chipped teeth (3)
- Uneven wear on one edge of the teeth
- Worn valleys between the sprocket teeth
- Crankshaft sprocket keyway for wear
CAUTION:
Refer to Safety Glasses Caution
in Cautions and Notices.
IMPORTANT:
If the sprocket or sprockets must be replaced, replace both sprockets to ensure that timing chain centerline alignment is maintained.