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 TM 9-2815-220-24
CRANKSHAFT REPLACE/REPAIR
0139 00
INSTALLATION (Continued)
4. Install main bearing caps (6).
13
a. Install seven lower main bearing
halves (13) into main bearing caps (6) in
6
accordance with respective location
marks.
A
b. Coat mating surfaces (A) of main
A
bearing (6) caps, crankcase webs (B), and
lower main bearing halves (13) with
lubricant (item 21, WP 0173).
A
6
B
A
CAUTION
Main bearing caps and bearing halves must be installed in their
original position. The side of each main bearing cap that is marked as
"fly end" must be installed toward rear of crankcase (flywheel end).
Failure to comply may result in premature failure.
10
c. Place main bearing caps (6) over
crankcase studs (28) and lower into
6
position.
d. Use jackscrew (10) (item 110, WP 0176)
to spread crankcase just enough so that
28
each bearing cap (6) will slide into
position. Jackscrew must be repositioned
for each bearing cap location.
e. Remove jackscrew (10).
WP 0139 00-19
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