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(Fig. 37). Refer to Engine Specifications for the Plastigage should indicate the same clearance across the entire width of the insert. If clearance var- If the specified clearance is indicated and there are no abnormal wear patterns, replacement of the bear- If the clearance exceeds specification, install a pair of 0.025 mm (0.001 inch) undersize bearing inserts The clearance indicate with the 0.025 mm (0.001 inch) undersize insert pair installed will determine if CAUTION: Never use a pair of inserts that differ FOR EXAMPLE: DO NOT use a standard size upper insert and a 0.051 mm (0.002 inch) undersize Fig. 36 Crankshaft Journal Size Paint I. D. Location 1 – NO. 7 MAIN JOURNAL SIZE PAINT MARK 3 – NO. 1 CONNECTING ROD JOURNAL SIZE PAINT MARK BEARING INSERT PAIRS CHART INSERT CORRECT INCORRECT UPPER STANDARD STANDARD LOWER 0.025 mm (0.001 in.) UNDERSIZE 0.051 mm (0.002 in.) UNDERSIZE Fig. 37 Measuring Bearing Clearance with Plastigage 1 – PLASTIGAGE SCALE 9 - 84 4.0L ENGINE XJ SERVICE PROCEDURES (Continued) |