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MAIN BEARING INSPECTION AND REPLACEMENT INSTRUCTIONS (cont) - TM-5-1940-277-34_483
MAIN BEARING INSPECTION AND REPLACEMENT INSTRUCTIONS (cont) - TM-5-1940-277-34_485
TM-5-1940-277-34 Boat Bridge Erection Twin Jet Aluminum Hull Model USCSBMK1 (1940-01-105-5728) Manual
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TM 5-1940-277-34
MAIN BEARING INSPECTION AND REPLACEMENT INSTRUCTIONS
(Continued)
LOCATION
ITEM
ACTION
REMARKS
4.
Crankshaft (11)
Crankshaft main
Measure diameter
Use
micrometer
bearing journals
of journals.
caliper, outside.
(16)
5.
Cylinder block
a.
Main
bearings
a.
Determine
(1)
(12,13,14,15)
crankshaft to
bearing liner
clearance
(diameter of
step 2c minus
diameter of
step 3).
b.
Replace all
main
bearings
if clearance is
out of limits.
Specification:
0.002 to 0.0041
in. (0.051 to
0.104 mm).
b. 7 main bear-
Remove.
Use 5/8 in socket
ing caps
and
ratchet
.
(6,7,8,9)
and 14 bolts
(10)
3-53
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