Lubricating The Caster Wheel Hubs - Toro 74923TE Operator's Manual

6. Remove the dust cap and adjust the caster pivots.
Keep the dust cap off until greasing is done; refer to
Adjusting the Caster Pivot Bearing (page 45).
7. Remove the hex plug. Thread a grease fitting into the
hole.
8. Pump grease into the fitting until it oozes out around
the top bearing.
9. Remove the grease fitting in the hole. Install the hex
plug and dust cap (Figure 47).
Lubricating the Caster Wheel
Hubs
Service Interval: Yearly
Preparing to Lubricate the Caster
Wheels
1. Stop the engine, wait for all moving parts to stop,
remove the key, and engage the parking brake.
2. Elevate the front of the machine using one of the
following methods:
Figure 46
Figure 47
•
Jack and jack stands
A. Chock the rear tires.
B. Raise front of the machine using a jack.
C. Support the machine with jack stands.
•
Z Stand
A. Raise and support the machine using the Z
Stand; refer to Using the Z Stand® (page 29).
B. Chock the rear tires.
Lubricating the Caster Wheel Bearings
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 torque on spacer nut until there is a slight
amount of drag. After checking the bearing, apply a
thread-locking adhesive.
1. Remove the caster wheel from the caster forks.
1. Seal guard
2. Remove the seal guards from the wheel hub.
3. Remove one of the spacer nuts from the axle assembly
in the caster wheel.
Note: A thread-locking adhesive has been applied to
lock the spacer nuts to the axle.
4. Remove the axle (with the other spacer nut still
assembled to it) from the wheel assembly.
5. Pry out seals, and inspect bearings for wear or damage.
Note: Replace the bearings if necessary.
6. Pack the bearings with a general-purpose grease.
7. Insert one bearing, one new seal into the wheel.
Note: The seals must be replaced.
8. If the axle assembly has had both spacer nuts removed
(or broken loose), apply a thread-locking adhesive
to one spacer nut and thread onto the axle with the
wrench flats facing outward.
34
Figure 48
2. Spacer nut with wrench
flats