TM 5-3810-307-24-1-2
Installation.
a.
Press new ball bearing (2, Figure I-7) onto the rear crankshaft journal and install ball
bearing retainer nut (4). Ensure the force is applied to the inner race of the ball bearing
(2). Torque the bearing retainer nut from 424 to 460 ft lbs (575 to 625 Nm).
NOTE
Ensure the oil hole is aligned with the crankcase oil supply hole.
b.
Press the journal bearing (3) into the crankcase to a depth of 0.689 to 0.708 in. (17.5 to
18 mm) below the machined mounting flange.
c.
Assemble the crankshaft (1) with ball bearing (2) into the crankcase. Ensure that the rod
throw is in the TDC position and will enter through the cast clearance slot.
CAUTION
Ensure that the load is applied to the outer race of the ball bearing (2) to
avoid bearing damage.
d.
Press the crankshaft into the crankcase until it bottoms on the shoulder.
e.
Install the piston and connecting rod assemblies. Refer to paragraph I-3-3.
f.
Insert the new head cover gasket and assemble the head and the cover with two new
head cover screws. Install the head assembly with new head gasket and head bolts
supplied with the crankshaft bearing service kit. Refer to paragraph I-3-1.
3
1
2
4
Figure I-7. Crankshaft Bearing Replacement
I-14 Change-1
