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TM 9-2815-220-24
PISTONS, RINGS, AND ASSOCIATED PARTS REPLACE/REPAIR
0142 00
ASSEMBLY
NOTE
Piston rings are marked to indicate which side goes up. Check
marking on rings and install the upper (tapered) compression ring
and the two intermediate compression rings with the marking "TOP"
or "" mark toward the piston dome. Oil control rings are
symmetrical and may be installed with either side up.
Piston rings should be installed starting with the lowermost ring so
that no ring has to pass over another during installation. During
installation, expand rings only enough to slide ring over body of
piston and into the proper groove.
Install all rings using remover and replacer (item 78, WP 0176) as
shown.
1. Install oil control ring (3).
a. Install expander spring (6) in groove number four of piston (4) by joining at parting line.
CAUTION
Use care in installing rings to avoid damaging ring lands or distorting
rings. Rings are easily broken, do not expand any more than
necessary to accomplish installation.
b. Using remover and replacer (5) (item 78, WP 0176), install oil control ring (3) over
expander spring (6) in groove four of piston (4).
2. Install compression rings (1, 2) lowermost first, in a similar manner.
6
3
6
2
2
1
4
5
WP 0142 00-11

 


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