TM 5-3805-258-24-2ENGINEDISASSEMBLY AND ASSEMBLYPISTON COOLING ORIFICESREMOVE AND INSTALL PISTON COOLINGORIFICES1307-10Tools NeededAFT1542Orifice Driver1start by:a) remove crankshaft and gearNOTE: The piston cooling orifices are installed inthe No. 2 and 4 main bearing bosses in the cylinderblock.1.2.Use a soft punch to remove the orifices from thecylinder block.Use tool (A) to install the orifices in main bear-ing bosses No. 2 and 4 until they are against thecounterbore. Be sure the orifices are open afterthey are installed.end by:a) install crankshaft and gear5-147
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