C 1500 Truck 2WD V8-6.5L DSL Turbo VIN S (1997)
Timing Chain: Service and Repair
Replacement
REMOVAL
CAUTION: Perform TDC Offset Recovery procedure in Powertrain Management if the timing chain, timing gears, engine front cover, crankshaft
position sensor, crankshaft or other components affecting the timing are replaced.
1. Remove the engine front cover.
2. Measure the timing chain free play in the following way:
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Mount a dial indicator to the front of the block.
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Position the dial indicator so that the plunger contacts the timing chain.
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Pull the chain outward, parallel to the front face of the block, the maximum amount with finger pressure on the inside of the chain.
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Set the dial indicator to zero.
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Move the chain inward parallel to the front face of the block, the maximum amount with finger pressure on the outside of the chain.
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Note the total indicator travel. With used parts, the deflection must not exceed 20.3 mm (0.8 inch). If the deflection exceeds this limit, the
sprockets and the timing chain must be inspected for wear and replaced as necessary. With the new parts the deflection must not exceed 12.7
mm (0.5 inch).
NOTE: Align the timing marks.
3. Remove the fuel injector pump gear and bolts.
