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PISTON RING SPECIFICATION CHART Ring Position Ring/Groove Maximum Side Clearance Clearance Upper Ring 0.02-0.07mm 0.11mm (0.0008- 0.0028 in.) (0.004 in.) Intermediate Ring 0.02-0.06 mm 0.10mm (0.0008-0.0023 in.) (0.004 in.) Ring Position Ring Gap Wear Limit Upper Ring 0.23-0.38mm 0.43mm (0.0090-0.0149 in.) (0.017 in.) Intermediate Ring 0.35-0.60mm 0.74mm (0.0137-0.0236 in.) (0.029 in.) Oil Control Ring 0.015-0.66mm 0.76mm (Steel Rail) (0.0059- 0.0259 in.) (0.030 in.) 7. The No. 1 and No. 2 piston rings have a different cross section. Ensure No. 2 ring is installed with manufacturers I.D. mark (Dot) facing up, towards top of the piston. NOTE: Piston rings are installed in the following order: • Oil ring expander. • Lower oil ring side rail. • Upper oil ring side rail. • No. 2 Intermediate piston ring. • No. 1 Upper piston ring. 8. Install the oil ring expander. 9. Install upper side rail by placing one end between the piston ring groove and the expander ring. Hold HB ENGINE - 5.7L SERVICE INFORMATION 9 - 1419 |