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 TM 55-1905-220-14-7
3-171.1. PISTON - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
REASSEMBLY (Cont)
CAUTION
When installing the oil control rings, use care to prevent
overlapping the ends of the ring expanders. An overlapped
expander will cause the oil ring to protrude beyond allowable
limits and will result in breakage when the piston is inserted in
the ring compressor during installation in the cylinder liner. Do
not cut or grind the ends of the expanders to prevent
overlapping. Cutting or grinding the ends will decrease the
expanding force on the oil control rings and result in high
lubricating oil consumption.
i.
Oil
Install the upper and
Install by hand.
control
lower halfs.
Do not use tool.
rings
Install the
(8)
upper half with
the gap 180
from the gap in
the expander.
Then install
the lower half
with the gap 450
from the gap in
the upper half
of the ring.
Make sure the
scraper edges
are facing down
(toward the
bottom of the
piston).
3-2896
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