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 TM 55-1905-220-14-11
5-143. COMPRESSOR-HVAC-MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
OVERHAUL (Cont)
n.
Rings
Install two compression
(53)
rings (plain), an oil
ring (vented), and a
second oil ring on the
piston skirt, as follows:
1.
Insert each ring in
cylinder about 3/8"
from top and check
ring gap. It should
be between .007 and
.017 inch (.018 and
.043 cm).
2.
Install compression
rings on the piston
with the side marked
"Top" toward the
head of the piston.
Install oil rings
with either side up.
(They have no taper).
3.
Stagger ring gaps
around piston.
5-1506
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