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TM 5-4320-305-24
4-12. REPLACE/REPAIR CRANKSHAFT ASSEMBLY (Continued)
2
Check the matchmark (1) on each bearing cap (2)
and match it with the corresponding matchmark (1)
on the crankcase (3). The matchmarks indicate
direction of installation as well as location. The
number and direction of the matchmark on each
bearing cap shall be the same as the matchmark at
each crankcase position.
3
In each bearing cap (1), install bolts (2), washers (3)
and dowel bushings (4).
4
Coat main bearings (5) with lubricating oil.
5
Coat stop rings (6) with grease and position on
bearing caps so that each stop ring lines up with
groove on stop ring face of bearing cap. Be sure to
install the two stop rings on the bearing caps from
which they were removed.
6
Starting with the center locating bearing and working
toward the front and rear bearings, install correctly
matched main bearings (5), bearing caps (1), and
stop rings (6) in the corresponding bearing brackets
of the crankcase.
7
Make sure main bearing half (5) with oil groove is
installed in the crankcase, and that each bearing cap
(1) is properly alined by dowel bushings (4).
8
Tighten bolts '2) alternately and evenly to 22.13 ft-lb
(30 N.m) torque with socket wrench. Using torque
gage No. 101910, tighten bolts an additional 60
degrees. Following the same pattern, tighten bolts
again an additional 45 degrees.
4-101
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