Camshaft Timing Chain and Sprocket Cleaning and Inspection
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Clean the components with cleaning solvent.
- Dry the components with compressed air.
- Inspect the timing chain for binding or wear.
- Inspect the crankshaft sprocket for worn, damaged, or chipped teeth.
- Inspect for a damaged keyway.
- Inspect for worn oil pump drive splines.
- Inspect the timing chain tensioner for the following conditions:
- Damaged or broken tension spring (1)
- Excessive wear or scoring on the chain guide surfaces (2, 3)
WARNING:
Refer to Safety Glasses and Compressed Air Warning .