TM 5-4320-300-146-10. PISTONS AND CONNECTING RODS (CONT)Location/ItemActionRemarks35. Piston ringsIf gap on new compression ring is insufficient, itmay be increased by filing or stoning the endsof the ring. File or stone both ends of ring socutting action is from outer surface to inner sur-face. This will prevent any chipping or peeling ofchrome plate on ring. The ends of the ring mustremain square and chamfer on outer edge mustbe approximately 0.015 inch (0.381 mm). Re-place a new oil control ring which fails to meetring gap tolerance. If piston ring side clearanceexceeds the limit, replace piston.REASSEMBLY36. Piston pinIf bushings were removed during overhaul,bushingsinstall new bushings.(in piston)37. ConnectingStart replacement spray nozzle into connectingrod sprayrod counterbore with the holes in a diamondnozzlepattern sideways to the bushing bore. Supportconnecting rod in an arbor press. Place a short3/8 inch (9.53 mm) inner diameter sleeve ontop of nozzle. Press nozzle into counterboreuntil it bottoms.38. ConnectingClamp upper end of connecting rod assembly.rod bushingsStart a replacement bushing straight into bore ofconnecting rod, with bushing joint at top of rod.Drive bushing in connecting rod. Turn rod overand install second bushing in the same way.NOTEBushings must be able to stand an end load of 2000 pounds (907 kg). Ifbushing slides in easy, it probable will not stand the required end load.Replace bushings or connecting rod if necessary.6-87
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