TM-9-2815-205-34

ENGINE WITH CONTAINER; MODELS 5063-5299, 5063-5392, 5063-5393, 5063-5395, 5063-5398, 5063-539F, 5063-539L

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

AUGUST 1992
TM-9-2815-205-34

  TM-9-2815-205-34 - Page 330 of 596

TM 9-2815-205-34
3-51. PISTON AND CONNECTING ROD MAINTENANCE - CROSS-HEAD (MODELS 5063-5392,
5063-5393, 5063-539F, AND 5063-539L) (Cont)
c. Cleaning
●
Dry cleaning solvent P-D-680 is toxic and flammable. Wear protective goggles
and gloves and use in a well-ventilated area. Avoid contact with skin, eyes, and
clothes. Do not breathe vapors. Do not use near open flame or excessive heat.
The flash point is 100-138°F (38-50°C). If you become dizzy while using cleaning
solvent, get fresh air immediately and seek medical aid. If contact with eyes is
made, wash with water and get medical aid immediately.
●
Use goggles, rubber gloves, and rubber apron when cleaning parts in carbon
removing compound. Provide adequate ventilation. Avoid inhaling fumes and
contact with skin. If compound is splashed on skin, flush with water and wash
with alcohol. Alcohol containing 2 or 3 percent camphor is preferable. If contact
with eyes is made, flush eyes with water and get medical aid immediately.
●
Compressed air used for cleaning purposes will not exceed 30 PSI. Use only with
effective chip guarding and personal protective equipment (goggles/shield,
gloves, etc.)
(1) Clean piston components with cleaning solvent and dry with compressed air. If cleaning solvent
does not remove carbon deposits, use carbon-removing compound which will not harm
bushings or tin plate on piston skirt.
(2) Clean ring grooves in dome with suitable tool or piece of an old compression ring ground to
bevel edge.
CAUTION
Do not wire brush or glass bead piston skirt. Skirt is tin plated and wire brushing and
glass beading will remove plating.
(3) Clean inside surfaces of piston dome and skirt. Clean oil drain holes in lower half of piston skirt.
Do not enlarge holes while cleaning them.
CAUTION
Do not use crocus cloth on bushing side of pin. Bushing side requires a polished finish.
(4) Use crocus cloth wet with fuel oil to remove any trace of fretting or corrosion on pin-contacting
surface of connecting rod.
3-200
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