C 2500 Truck 2WD V8-5.7L VIN R (1997)
11. Measure the piston ring side clearance.
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Piston Compression Ring Groove Clearance:
Production
Top: 0.030-0.070 mm (0.0012-0.0027 inch)
2nd: 0.040-0.080 mm (0.0015-0.003 inch)
Service Limit
Top: 0.030-0.090 mm (0.0012-0.0035 inch)
2nd: 0.040-0.0100 mm (0.018-0.026 inch)
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Piston Oil Ring Groove Clearance
Production: 0.051-0.17 mm (0.002-0.006 inch)
Service: 0.051-0.22 mm (0.002-0.009 inch)
a. Roll the piston ring entirely around its ring groove on the piston.
b. Dress the groove with a fine cut file if the ring groove causes binding.
c. Replace the piston ring if a distorted piston ring causes binding.
d. Use a feeler gage in order to measure the side clearance of the piston ring and groove.
e. Try another piston ring if the side clearance is too small.
