TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM9-2815-202-34 (2) Remove two nuts (2), cap (3), and lower bearing shell (4) from connecting rod (5). NOTE Tag piston to insure it is installed with same liner. (3) (4) Push piston and rod assembly out through top of cylinder block (6). Reassemble bearing cap (3) and lower bearing shell (4) to connecting rod (5). b. Disassembly (1) Secure connecting rod (5) in a vise equipped with soft jaws and remove piston rings (7) with piston ring pliers (8). Discard piston rings. CAUTION (2) (3) Do not damage piston or bushing while removing piston pin retainers. Punch a hole through center of one piston pin retainer (9) with a narrow chisel or punch and pry retainer from piston assembly (1 O). Remove opposite retainer in same manner. Discard retainers. Loosen two bolts (11 ) which secure connecting rod (5) to piston pin (12). Remove rod and piston assembly from vise and place assembly on a bench. Remove two bolts (11 ), two spacers (13), and connecting rod (5). Discard bolts and spacers. NOTE Match mark used piston dome, piston pin, and pin bushing and keep together as a set for reassembly to maintain proper fit and wear. (4) Remove piston pin (12) from piston assembly (10). 4-133