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 TM 55-1905-220-14-7
3-171.1. PISTON - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
REASSEMBLY (Cont)|
3. A pre-stressed com-
Preston ring is also
used in the ring groove
immediately below the
fire ring.
4. A two-piece oil control
ring is used in both
oil ring grooves in the
piston, and a peripheral
abutment type oil ring
is used in the expander.
5. All crew piston rings
must be installed when-
ever a piston is re-
moved, regardless of
whether a new or used
piston or cylinder
liner is installed.
3-2891
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