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5. Pry out the seals, and inspect the bearings for wear or
damage and replace if necessary.
6. Pack the bearings with a general-purpose grease.
7. Insert 1 bearing and 1 new seal into the wheel.
Note: You must replace the seals.
8. If the axle assembly has had both spacer nuts removed
(or broken loose), apply a thread-locking adhesive to 1
spacer nut and thread it onto the axle with the wrench
flats facing outward. Do not thread the spacer nut all of
the way onto the end of the axle. Leave approximately
3 mm (1/8 inch) from the outer surface of the spacer
nut to the end of the axle inside the nut.
9. Insert the assembled nut and axle into the wheel on the
side of the wheel with the new seal and bearing.
10. With the open end of the wheel facing up, fill the area
inside the wheel around the axle full of grease.
11. Insert the second bearing and new seal into the wheel.
12. Apply a thread-locking adhesive to the second spacer
nut and thread it onto the axle with the wrench flats
facing outward.
13. Torque the nut to 8 to 9 N∙m (75 to 80 in-lb), loosen,
then torque to 2 to 3 N∙m (20 to 25 in-lb). Make sure
that the axle does not extend beyond either nut.
14.
Install the seal guards over the wheel hub and insert
the wheel into the caster fork. Install the caster bolt
and tighten the nut fully.
Important: To prevent seal and bearing damage, check
the bearing adjustment often. Spin the caster tire. The
tire should not spin freely (more than 1 or 2 revolutions)
or have any side play. If the wheel spins freely, adjust the
torque on the spacer nut until there is a slight amount of
drag. Apply thread-locking adhesive.
Engine Maintenance
Servicing the Air Cleaner
Note: Check the filters more frequently if operating
conditions are extremely dusty or sandy.
Removing the Air Filter
Service Interval: Every 250 hours
1. Disengage the PTO, move the motion-control levers to
the N
-
EUTRAL
LOCK
2. Shut off the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Release the latches on the air cleaner and pull the
air-cleaner cover off the air-cleaner body
4. Clean the inside of the air-cleaner cover with
compressed air.
5. Gently slide the filter out of the air-cleaner body
43). Avoid knocking the filter into the side of the body.
6. Inspect the filter for damage by looking into the filter
while shining a bright light on the outside of the filter.
Holes in the filter appear as bright spots. If the filter is
damaged, discard it.
1. Air-filter body
2. Air filter
37
position, and set the parking brake.
(Figure
Figure 43
3. Air-cleaner cover
4. Latches
43).
(Figure
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