Toro 29518 Operator's Manual page 29

1. Wheel bolt
2. Caster-wheel assembly
Disassembling the Caster-Wheel Hub and Greasing the
Bearings
Service Interval: Yearly
Important: Use new bearing seals when lubricating the
caster-wheel hubs.
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
torque on spacer nut until there is a slight amount of
drag. Reapply thread locking adhesive.
Grease type: National Lubricating Grease Institute (NGLI)
grade #2 multi-purpose gun grease.
1. Remove the 2 seal guards from the wheel hub
29).
1. Axle (spacer nut still
assembled)
2. Hub
3. Bearing
2. Remove 1 of the spacer nuts from the axle assembly in
the caster wheel (Figure
Note: Note that thread locking adhesive has been
applied to lock the spacer nuts to the axle
Figure 28
3. Wheel nut
Figure 29
4. Spacer nut
5. Bearing seal
6. Seal guard
29).
(Figure
3. Remove the axle (with the other spacer nut still
assembled to it) from the caster-wheel assembly
29).
4. Pry out both of the bearing seals
Note: Discard the old seals.
5. Remove both of the bearings and inspect each one for
wear or damage
Note: Replace the bearing if it is worn or damaged.
6. Pack the 2 bearings with the specified grease.
Assembling the Caster-Wheel Hub
1. Install 1 bearing into the hub of the wheel
2. Install the bearing seal into the hub at the bearing
(Figure
3. If you removed (or broke loose) both of the spacer
nuts from the axle assembly, perform the following:
A. Clean the threads of the axle and spacer nut.
B. Apply a thread locking adhesive to the threads at
one end of the axle.
C. Thread the axle nut, with the wrench flats facing
outward, onto the end of the axle that is prepared
with thread-locking compound
Note: Do not thread spacer nut all of the way
onto 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.
4. Insert the assembled nut and axle into the wheel at
the side of the wheel with the new seal and bearing
(Figure
(Figure
5. With the open end of the wheel facing up, fill the area
inside wheel cavity (around the axle) with the specified
grease.
6. Install the other bearing and new seal into the wheel
(Figure
7. Apply a thread locking adhesive to the 2nd spacer nut
and thread onto the axle with the wrench flats facing
outward.
8. Torque the spacer nut to 8-9 N-m (75-80 in-lb), loosen,
then re-torque to 2-3 N-m (20-25 in-lb).
Note: Make sure axle does not extend beyond
either nut.
9. Install the seal guards over the wheel hub
Installing the Caster-Wheel Assembly
1. Align the hole in the axle of the caster-wheel assembly
between the holes in the fork of the caster
2. Secure the to the fork with the wheel nut and bolt
(Figure
the Caster-Wheel Assembly (page
29).
3. Torque the wheel nut to 91 to 113 N-m (67 to 83 ft-lb).
29
(Figure 29).
29).
29).
29).
28) that you removed in step
(Figure
(Figure 29).
(Figure 29).
(Figure 29).
(Figure 29).
(.3Figure 28).
3 of Removing
28).