11
-
2
11.4 Drive Belt
Check drive belts for wear every 10 hours.
11.5 Lifter Strut Hubs
Lifter strut hubs (A), shown in Figure 11
-
4, must have the following service every 400 acres (or soon-
er in severe conditions). Re
-
pack with grease, check seals, ret
-
torque spindle nuts, and check for
movement in lifter wheel bearing.
11.5.1 Torqueing Spindle Nut:
1.
Ensure the seal and bearings are seated properly
before tightening the spindle nut.
2.
Torque the spindle nut to 200 ft
-
lb (271.2 N·m)
while continuously rotating hub (A). At this point,
the hub should be difficult to rotate.
3.
Loosen the spindle nut one full turn or until it
’
s
loose.
4.
Torque the spindle nut to 50 ft
-
lb (67.8 N·m) while continuously rotating the lifter wheel hub.
5.
Back off the spindle nut
1
/
6
of a turn or just enough to install the cotter pin in the spindle.
IMPORTANT:
Failure to follow proper torque procedure will result in bearing failure.
Figure 11
-
3: Drive Belt
Figure 11
-
4: Hub
A
Summary of Contents for 2720
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