TM 10-4320-309-14TM 4320-14/1Piston ring breakage may occur if rings are opened morethan necessary when installing. Never stretch piston ringsmore than necessary.1st compression ring2nd compression ringOil ringFigure 5-38. Piston Ring Installationc.Use the piston ring remover tool to install piston rings. Install oil ring, 2nd compression ring, and 1stcompression ring in order.d.Make sure each piston ring gap is 120 degrees.e.Make sure the piston rings move smoothly.f.Apply liberal amount of lubricating oil to the outer surface of the piston and inner surface of the cylindersleeve.g.Align the identification mark DM in the piston head with the matching mark on the connecting rod.h.Make sure the main bearing is in the proper position.i.Install crank pin bearing insert (refer to 9, Figure 5-31) into connecting rod (refer to 2, Figure 5-31).5-38
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