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 TM 55-1905-223-24-1
3-25. Replace/Repair Connecting Rod and Piston Group.
This task covers: a. Removal, b. Repair, c. Replacement.
INITIAL SETUP
Tools
Equipment Condition
Tool kit, general mechanic's
rail and marine diesel engine,
Engine shutdown. TM 55-1905-223-10.
Handhole cover removed, para. 2-35.
Torque wrench kit P/N 3377216
Cylinder head removed, para. 2-34.
Connecting rod guide pins
P/N 3375098
Piston ring compressor P/N 3375342
Rod bolt checking fixture
P/N 3376846
Piston ring expander P/N ST-1269
Materials/Parts
Connecting rod assembly
P/N 3043910
Piston P/N 3801436
Engine lube oil, Item 2, Appendix C
REMOVAL
a. Remove connecting rod and piston.
WARNING
To prevent injury, wear eye protection when using a wire
brush. Ensure the wire brush is rated for the rpm being
used if the brush is motor driven. Remove any broken
wire bristles from the engine.
CAUTION
Do not use aluminum oxide cloth to remove the carbon
ring. Remove any broken wire bristles from the engine.
Small particles of abrasives or debris can cause
damage to the engine.
(1) Using wire brush, remove the carbon ring from the top of the cylinder lining as necessary to allow
the removal of the pistons.
3-80
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