TM 5-4320-302-146-20. CRANKSHAFT ASSEMBLY (CONT)Location/ItemActionRemarks19. Camshaft bearRemove.ing bush20. CrankcaseMeasure bore with precision micrometer. Measure-bore mainment should be 2.7165 to 2.7173 inchesbearing(69.0 to 69.019 mm). If bore measurement isnot within these tolerance limits, replacecrankcase.21. CrankcaseMeasure bore with precision micrometer. Measure-bore cam-ment should be 2.0472 to 2.0484 inchesshaft bearing(52.0 to 52.030 mm). If measurement is notwithin these tolerance limits, replace crankcase.6-172
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