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 TM 55-1905-220-14-4
3-40.1. PISTON - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
REASSEMBLY (Cont)
If any bind occurs between
the piston and liner, exam-
ine piston and liner for
burrs. Remove burrs with
a fine hone (a flat one is
preferable) and recheck the
clearance.
b. Piston
Each piston is fitted with
ring
a fire ring, three compres-
fitting
sion rings and two oil
control rings.
The top compression (fire)
ring can be identified by
the bright chrome on the
bottom side and black oxide
or copper color on the top.
The prestressed fire ring
is further identified by
an oval mark.
3-818
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