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TM 10-3930-659-34
5-3.
PISTON, CONNECTING ROD, AND CONNECTING ROD BEARING MAINTENANCE (Con’t).
3.
Using
piston
ring
expander,
remove
compression ring (13), oil control ring (14), and
oil ring expander (15) from piston (10). Discard
rings.
4.
Remove two retaining rings (17) from piston
(10).
5.
Remove piston pin (16) from piston (10).
6.
Remove piston (10) from connecting rod (9).
CAUTION
DO NOT remove piston pin bushing
unless
damaged.
Removal
may
damage bushing.
7.
Using arbor press and piston pin bushing
remover and installer, remove piston pin bushing
(18) from connecting rod (9).
c.
CLEANING AND INSPECTION
WARNING
Carbon removing compound is a corrosive liquid. If splashed in eyes, it can cause blindness. If splashed
on skin, it can cause serious burns. Always wear protective goggles or lenses, rubber apron, and rubber
gloves. If accidentally splashed in eyes or on skin, flush with cool, clean water. Refer to FM 21-11 for first
aid information and seek medical attention immediately.
1.
Soak piston overnight in carbon removing compound. Using scrub brush, remove carbon from piston head and
rinse with hot water.
2.
Using scrub brush, clean piston ring grooves.
TA708139
5-26
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