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TM 10-3930-643-34
GENERAL SUPPORT ENGINE, FUEL, EXHAUST AND COOLING MAINTENANCE. (cont)
13-8.
Pistons, Connecting Rods and Connecting Rod Bearings. (Sheet 10 of 12)
ASSEMBLY (cont)
A piston ring expander must be
used to install rings.
Use of any
other tool may cause damage to
piston lands.
35.
36.
37.
38.
NOTE
During installation of rings, make
sure the proper order is followed.
Bottom ring
first,
then
consecutively upwards.
Shiny face
of ring should be up.
Using a ring expander tool, install
new rings (8, 7 and 6).
Position ring (8) 90 degrees from
intermediate ring. Position ring (7)
180 degrees from top ring. Position
split of ring (6) 30 degrees from pin
bore.
Coat cylinder sleeve in upper
crankcase with thick lubricating oil.
Coat piston (5) and rings (8,7 and 6)
with clean lubricating oil,
working
oil into ring grooves.
Go to sheet 11
13-58
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