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 TM 55-1905-219-14-11
5-140. COMPRESSOR - HVAC - MAINTENANCE INSTRUCTIONS
(Continued).
LOCATION
ITEM
ACTION
REMARKS
OVERHAUL (Cont)
n. Rings
Install two compression
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.
5-1436
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