TM 5-4320-302-146-20. CRANKSHAFT ASSEMBLY (CONT)Location/ItemActionRemarks37. Stop ringInspect and replace for excessive wear, cracks,warpage, rust, corrosion, or other damage.Measure thickness. Measurement should be 0.1156to 0.1175 inch (2.935 to 2.985 mm). If measurementis not within tolerance limits, replace stopring. Stop rings are available in normal and over-size thickness as shown below:THICKNESS(NORMAL AND OVERSIZED)inchesSTOP RING (millimeters)0.1156 to 0.1175Normal (2.935 to 2.985)0.1254 to 0.1274First oversize(3.185 to 3.235)0.1352 to 0.1372Second oversize(3.435 to 3.485)0.1451 to 0.1470Third oversize(3.685 to 3.735)38. ParallelInspect and replace if excessively worn, warped,pins andrusted, corroded, or otherwise damaged.screw plugREPAIR/REPLACEMENT39. CrankcaseReplace if:Crankcase is cracked, overheated, distorted,or seriously damaged.Crankcase machined surfaces are severelyrusted or corroded.New main bearing bush or camshaft bushwill not seat properly in crankcase.6-182
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