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TM 5-4320-304-14
TM 08922A-14/1
5-12. lNSPECT/REPAIR/REPLACE PISTON (Continued)
DISASSEMBLY:
1
Remove gudgeon pin (2) from piston (3) using
gudgeon pin extractor 614 957 00 if
necessary.
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:
1
2
3
4
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 cloth-
ing. 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.
Clean piston (3) and gudgeon pin (2) with dry cleaning solvent and dry with compressed
air.
Remove carbon from piston ring lands and grooves.
Clean
Clean
inside surface of piston and piston skirt.
gudgeon pin bore.
5-40
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