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TM 5-4320-308-13
4-19.
INSPECT/REPAIR/REPLACE PISTON (Continued)
DISASSEMBLY:
1
Remove gudgeon pin (2) from piston (3) using gudgeon pin extractor 614 957 00 if necessary
CAUTION
Piston ring breakage may occur if rings are opened more than necessary when
removing or installing them. Do not strain rings
2 Remove piston ring set (6) from piston (3) with piston ring pliers 612 090 00.
CLEANING:
WARNING
Dry cleaning solvent P-D-680 (safety or Stoddard's Solvent) is potentially
dangerous. Avoid repeated and prolonged breathing of vapors and skin contact
with the liquid. Do not use near open flame, arcing equipment, or other ignition
sources. Always wear eye protection and protective clothing. The flash point of
P-D-680 is 100° to 138°F (38° to 59°C)
Death or serious injury could occur if compressed air is directed against the skin.
Do not use compressed air for cleaning or drying unless the pressure is/has been
reduced to 30 psi (2.06 bar) or less. When working with compressed air, always
use chip guards, eye protection, and other personal protective equipment.
1
Clean piston (3) and gudgeon pin (2) with dry cleaning solvent and dry with compressed air.
2
Remove carbon from piston ring lands and grooves.
3
Clean inside surface of piston and piston skirt.
4
Clean gudgeon pin bore.
4-54
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