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TM 5-4320-306-24
4-12.
REPLACE/REPAIR CRANKSHAFT ASSEMBLY (Continued)
3
Passing 3/4 inch (19.05 mm) rope or fabric lifting slings through cylinder bores 1 and 6, secure the crankshaft so
it will not fall from the crankcase when the bearing caps are removed.
4
Check that each bearing cap (1) is
marked with a corresponding matchmark
on the crankcase (2). The matchmarks
must indicate direction of match as well
as location.
5
If there are no existing matchmarks,
mark each bearing cap (1) and its
corresponding
position
with
an
identification number (3). The number
and direction of the number should be
the same for each cap and crankcase
position.
6
Starting with the front and rear bearing
caps (1), and working toward the center
bearing caps, remove the bolts (2) and
washers (3) that secure each bearing cap
to the crankcase (4).
7
Remove bearing caps (1), main bearings
(5), and stop rings (6). Be sure to note
location of the two stop rings to aid in
installation. Remove dowel bushings (7)
that aline each bearing cap to crankcase.
8
Follow
procedure
described
in
paragraph 4-13 for inspection, repair, or
replacement of bearing cap, bracket, and
main bearing.
9
Release the slings holding the crankshaft
in position and remove it from the
crankcase.
4-94
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