TM 5-4310-393-14CAUTIONPiston rings are marked TOP and should be installed as marked. Piston breakagemay occur if rings are opened more than necessary when removing or installingthem. Do Not Strain Rings.b.If piston replacement is necessary, piston rings must also be replaced.c.Install oil control ring (Figure 5-44,Item 1), cast iron compression ring (2) and chromecompression ring (3) in that order. Be careful not tostrain rings by opening them more than necessaryduring installation.d.Install new retaining ring(Figure 5-45, Item 1) in lip groove of piston (3) piston pinbore.FIGURE 5-44. INSTALL PISTON RINGSCAUTIONWhen installing cylinder, make sure piston or connecting rod does not knockagainst crankcase. This could result in damage to piston or connecting rod.e.Insert connecting rod (Figure 5-45,Item 4) into bottom of piston (3). Make sure that openingof combustion chamber is on the flywheel side.f.Insert wrist pin (2) into piston (3)wrist pin bore and through rod bushing of connecting rod(4) Push in wrist pin until It contacts installed retainingring (1) and stops. Install retaining ring (5).FIGURE 5-45. ASSEMBLE PISTON5-35
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