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TM 10-3930-643-34
GENERAL SUPPORT ENGINE, FUEL, EXHAUST AND COOLING MAINTENANCE. (cont)
13-5.
Crankshaft Main Bearings. (Sheet 3 of
INSTALLATION
7.
8.
9*
10.
11.
12.
13.
14.
15.
16.
17.
Coat six new bearing halves (1) with
lubriplate. Install six new bearing
halves (1) in crankcase.
Coat new thrust bearing half (2) with
lubricate and install in crankcase.
Using a hoist and sling, install
crankshaft (5), refer to paragraph
13-4.
Install six new bearing halves (3
six saddle caps.
Install thrust bearing half (4)
thrust bearing saddle cap.
in
in
Position 0.010 inch thick by 1-1/2
inch long virgin lead on top of
thrust bearing journal.
Install thrust bearing saddle cap and
two bolts in crankshaft (5).
Using a 13/16” socket and torque
wrench, tighten bolts in
crankshaft
(5) to 115 lb-ft.
Using a 13/16” socket and socket
wrench handle, remove bolts.
Remove thrust bearing saddle cap.
Using a micrometer, measure thickness
of lead (bearing clearance).
Lead
thickness should be 0.002 to
.005
4)
inch.
GO to sheet 4
13-36
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