Yukon 2WD V8-5.7L VIN R (1997)
Timing Chain: Service and Repair
Removal
Tools Required
J 5825-A Crankshaft Gear Remover
1. Remove the crankshaft position sensor reluctor ring.
2. Check the camshaft timing chain free play. If the camshaft timing chain can be moved in excess of 11 mm (0.43 in.), replacement of the camshaft
timing chain and the sprockets is recommended during assembly.
A. Rotate the camshaft sprocket (1) counterclockwise until all slack is removed from the camshaft timing chain (2).
B. Measure the free play on the slack side (3) of the camshaft timing chain.
3. Remove the camshaft sprocket bolts.
4. Remove the camshaft sprocket.
5. Remove the camshaft timing chain.
