TM 55-1930-209-14&P-21Figure 6-27. Piston Assembly.(3)Upper portion of liner is directly cooled by water surrounding liner. Center portion of liner is cooled byscavenging air which enters cylinder through 18 equally spaced ports.6-32Piston and connecting rod removal and disassemblyNOTEIf a complete overhaul is to be accomplished, do not commence reassembly until cylinderliner inspection and repair and crankshaft repair has been accomplished.a.Removal(1)Remove engine assembly.(2)Remove cylinder head assembly, (para 6-15).(3)Remove oil pan.(4)Remove oil pump.(5)Use a suitable ridge reamer and remove carbon from upper inner surface of cylinder liners.NOTEMove piston to bottom of its travel and place a cloth on top of piston to collect cuttings.After reaming is completed, turn crankshaft until piston is at its top of stroke andcarefully remove cloth with cuttings.6-58
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