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 TM 55-1905-219-14-7
3-172.1. CRANKSHAFT BEARINGS - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
INSPECTION (Cont)
washer on one
or both sides
of the rear
main bearing.
A new standard
size thrust
washer is . 1190
to .1220 inch
(.3023 to .3099
cm) thick.
Thrustwashers
are available
in .005 and
.010 inch (.0127
and .0254 cm)
oversize.
INSTALLATION
6. Upper
Upper
a. Clean.
bearing
bearing
numbers
shells
b
Lubricate.
Use clean engine
1, 2,
(4)
oil.
and 3)
NOTE
The upper and lower main bearing shells are not alike: the upper bearing shell
is grooved and drilled for lubrication - the lower bearing shell is not. Be sure
to install the grooved and drilled bearing shells in the cylinder block and the plain
bearing shells in the bearing caps. Otherwise, the oil flow to the bearings
and to the upper end of the connecting rods will be blocked off. Used bearing shells
must be reinstalled on the same journal from which they were removed.
c.
Install
Start the plain
end of bearing
shell around
the crankshaft
journal so that
when the bearing
is in place the
tang will fit
3-2994
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