TM 5-3825-225-14&PFigure 5-23. Scraper Ring.e. Installation(see Appendix E Figure 54).(1)Before fitting the piston (5) and connecting rod assemblies (6) to their respective cylinder bores,thoroughly clean and liberally coat each bore with clean engine oil.(2)Turn the engine until the crankpins of no. 1 and no. 4 cylinders are at BDC.(3)Using a suitable ring clamp as shown in Figure 5-24, carefully compress the rings of no. 1 piston andhold in this position.(4)With the word FRONT on the connecting rod facing the front of the engine, insert the rod carefully intono. 1 cylinder bore.(5)The piston head may be gently tapped with the shaft of a hammer until all the rings have entered thecylinder bore.(6)Draw the connecting rod (6) toward the crankpin, and place the top half bearing shell in position. Locatethe tag in the machined slot and oil it liberally. Draw the rod onto the crankpin.(7)Install the lower half bearing shell (11) to the connecting rod cap. Locating the tag in the machined slot,liberally oil and fit the cap to the crankpin, ensuring that the numbers on the rod and cap coincide (seeFigure 5-20).Figure 5-24. Piston Installation .NOTEThe cylinders are numbered 1, 2, 3, and 4starting from the front (water pump) end ofthe engine. These components (marked asshown in Figures 5-20 and 5-21) must bereturned to their original locations.NOTELocking tabs are not fitted to these setscrews.(8)Install the two connecting rod securing setscrews (10) and torquevenly to 42 lb-ft. (57 Nm).(9)Repeat this procedure for no. 4 piston and connecting rod assembly.(10) Rotate the crankshaft to bring crankpins of no. 2 and no. 3 cylinders to BDC.(11) Repeat steps (3)-(8) to install the two remaining piston and connecting rod assemblies.TA5063425-22
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