TM 5-4310-386-14NOTEMaximum wear limit of cylinder is 2.365 inches (60.08 mm)(6)Using micrometer, measure cylinder diameter in four places A, B, C and D.(7)Place each piston ring in cylinder and measure piston gap with feeler gage. Gap must be between0.0137 to 0.0196 inches (0.35 to 0.50 mm).(8)Install four piston rings (1) on piston (2).(9)Measure piston ring clearance in groove. The clearance should be between 0.00197 to 0.00393 inches(0.05 to 0.1 mm).(10) Install 2nd stage cylinder and piston (para. a. above).FOLLOW-ON MAINTENANCEInstall 2nd stage compressor valve head assembly (para. 5-22).6-15
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