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ARMY TM 9-2815-254-24 AIR FORCE TO 38G1-94-2 d. Install one retaining ring (12) in one side of piston (5). N O T E If a heater is not available, use a hot plate to heat a container of oil to 176°F (80°C). Place piston in hot oil. e. Place piston (5) in a heater and heat piston to 176°F (80°C). Use protective gloves when removing pistons from heater to avoid seri- ous burns. f. Apply coat of engine lubricating oil (ML-L-21 04) to piston pin (13). g. Position heated piston on connecting rod ensuring piston head front mark (notch on top of piston) and con- necting rod ISUZU forging mark are facing same direction. h. Using your hands and fingers, push piston pin (13) into piston until it makes contact with retaining ring. i. Install other retaining ring (12) in piston. j. Using a piston ring expander, install piston rings (11) as shown in FIGURE 3-93 and the following: N O T E Install compression rings with stamped side facing up. N O T E Insert expander coil into oil ring groove so there is no gap on either side of expander coil before installing oil ring. (1) Install piston rings (11, FIGURE 3-77) in order shown in FIGURE 3-93. 3-142


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