Lubricating The Caster-Wheel Hubs - Toro 74534TE GrandStand Operator's Manual

Lubricating the Caster-Wheel
Hubs
Service Interval: Yearly
1. Shut off the engine, wait for all moving parts to stop,
engage the parking brake, and remove the key.
1. Seal guard
2. Remove the caster wheel from the caster forks.
3. Remove the seal guards from the wheel hub.
4. Remove a spacer nut from the axle assembly in the
caster wheel.
Note: Thread-locking adhesive has been applied to
lock the spacer nuts to the axle. Remove the axle (with
the other spacer nut still assembled to it) from the
wheel assembly.
5. Pry out the seals and inspect bearings for wear or
damage, and replace if necessary.
6. Pack the bearings with a general-purpose grease.
7. Insert 1 bearing and 1 seal into the wheel.
Note: 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.
Note: Do not thread the spacer nut all 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 general-purpose
grease.
11. Insert the second bearing and the 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.
Figure 40
2. Spacer nut with wrench
flats
13. Torque the nut to 8 to 9 N∙m (71 to 80 in-lb), loosen it,
then torque it to 2 to 3 N∙m (20 to 25 in-lb).
Note: 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.
15. Install the caster bolt and tighten the nut fully.
Important: To prevent seal and bearing damage, check
the bearing adjustment often by spinning 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 and apply thread-locking adhesive.
33