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RING SIDE CLEARANCE CHART ITEM SPECIFICATION Top Compression Ring 0.042 - 0.084 mm (0.0017 - 0.0033 in.) Second Compression Ring 0.042 - 0.084 mm (0.0017 - 0.0033 in.) Oil Control Ring 0.06 - 0.21 mm (0.0024 - 0.0083 in.) (4) Place ring in the cylinder bore and push down with inverted piston to position near lower end of the RING GAP MEASUREMENT CHART ITEM SPECIFICATION Top Compression Ring 0.229 - 0.610 mm (0.0090 - 0.0240 in.) Second Compression Ring 0.483 - 0.965 mm (0.0190 - 0.080 in.) Oil Control Ring 0.254 - 1.500 mm (0.010 - 0.060 in.) (5) The oil control rings are symmetrical, and can be installed with either side up. It is not necessary to (6) The two compression rings are different and cannot be interchanged. The top compression ring Fig. 66 Top Compression ring identification 1 - TOP COMPRESSION RING Fig. 64 Ring Side Clearance Measurement 1 - FEELER GAUGE Fig. 65 Gap Measurement 1 - FEELER GAUGE TJ ENGINE 4.0L 9 - 115 PISTON RINGS (Continued) |