Lubricating The Caster-Wheel Hubs - Toro Z Master Professional 5000 Series Operator's Manual

Figure 42
6. Remove the dust cap and adjust the caster
pivots.
Note:
Keep the dust cap off until greasing is
done; refer to Adjusting the Caster-Pivot Bearing
(page 50).
7. Remove the hex plug.
8. Thread a grease fitting into the hole.
9. Pump grease into the fitting until it oozes out
around the top bearing.
10. Remove the grease fitting in the hole.
11. Install the hex plug and dust cap
Figure 43
12. Grease the caster-wheel bearings
Lubricating the
Caster-Wheel Hubs
Service Interval: Yearly
1.
g009030
1. Seal guard
2.
3.
4.
5.
(Figure 43).
6.
7.
8.
9.
10.
g027339
(Figure 43).
11.
36
Shut off the engine, wait for all moving parts to
stop, remove the key, and engage the parking
brake.
Figure 44
Raise the mower for access.
Remove the caster wheel from the caster forks.
Remove the seal guards from the wheel hub.
Remove one of the spacer nuts 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.
Pry out seals and inspect bearings for wear or
damage and replace if necessary.
Pack the bearings with a general-purpose
grease.
Insert 1 bearing and 1 new seal into the wheel.
Note:
The seals must be replaced.
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 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.
Insert the assembled nut and axle into the wheel
on the side of the wheel with the new seal and
bearing.
g006115
2. Spacer nut with wrench
flats