TM 5-4320-302-146-15.CYLINDER (CONT)Location/ItemActionRemarksPistons are available in two oversizes:NORMAL AND OVERSIZEDPISTON DIAMETERinchesPISTON DIAMETER(millimeters)Normal3.9351 to 3.9358(99.951 to 99.969)First oversize3.9548 to 3.9555(100.451 to 100.469)Second oversize3.9744 to 3.9752(100.951 to 100.969)f.Check that top and bottom joint faces are smooth and flat. If severely damaged,replace cylinder and/or piston if necessary. If joint faces have only minor nicks orburrs or minor high spots, repair.4.CylinderReplace a cylinder and/or piston if:replacementIt is cracked, severely scored, or has a high ridge at the top of its inner surface.Out-of-round exceeds the tolerable limits.Cylinder bore exceeds the tolerable limits.6-102
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