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 TM 55-1905-220-14-5
3-97.1. CRANKSHAFT BEARINGS (Cont).
LOCATION
ITEM
ACTION
REMARKS
INSPECTION (Cont)
A new standard
size thrust
washer is .1190
to .1220 inch
(0.3023 to
0.3099 cm)
thick. Thrust
washers are
available in
.005 and .010
inch (0.0127
and 0.0254 cm)
oversize.
INSTALLATION
6.
Upper
Upper bear-
1. Clean.
bearings
ing shells
Numbers (4)
2. Lubricate.
Use clean en-
1, 2 and
gine oil.
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 he
blocked off. Used bearing shells must be reinstalled on the same journal
from which they were removed.
3. Install.
Start the plain
end of the
bearing shell
around the
crankshaft
journal so that,
when the bear-
ing is in place,
the tang will
fit into the
groove in the -
bearing support.
3-1704
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