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 TM 55-1905-219-14-7
3-171.1. PISTON - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
REASSEMBLY (Cont)
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.
Install the upper and
Install by hand.
i.
Oil
lower halves.
Do not use tool.
control
Install the
rings
upper half with
(8)
the gap 180
from the gap in
the expander.
Then instal1
the lower half
with the gap 45
from the gap in
the upper half
of the ring.
Make sure the
scraper edges
are facing down
(toward the
bottom of the
piston).
3-2932
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