4-33. PISTON AND CONNECTING ROD MAINTENANCE (CROSS-HEAD) (Cent)
Keep fingers out of piston pin holes and wear steel-toed shoes when
disassembling piston dome from skirt. Personal Injury may result.
Separate piston skirt (14) from piston
Remove seal ring (16) from piston
dome (15). Discard seal.
Remove piston pin bushing (17) from
piston dome (15).
Use goggles, rubber gloves,
and rubber apron when
cleanlng parts In carbon-
ventilation. Avoid inhaling
fumes and skin contact. If
compound Is splashed on
skin, flush with fresh water
and wash with alcohol.
Alcohol containing 2 to 3
percent camphor Is
Compressed ah used for
cleaning purposes will not
exceed 30 psi. Use only with
effective chip guarding and
equipment (goggles/ shield,
Clean piston components with fuel oil and dry with compressed air. If fuel oil does not
remove carbon deposits, use carbon-removing compound which will not harm bushings or
tin plate on piston.
Clean ring grooves in dome with suitable tool or piece of an old compression ring ground to
Do not wire brush or glass bead piston skirt. Skirt is tin plated, and wire brushing or
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.