Toro Z MASTER 2000 Series Service Manual page 95

Caster Wheel Disassembly (continued)
Caster Wheel Assembly
2000 Series Z MASTER®Service Manual
3460-328 Rev A
2. Disconnect the battery by removing the negative cable first, then the positive
cable from the battery.
3. Raise and support the machine so that the front wheels are off the ground.
4. Remove the caster wheel from the caster fork.
5. Remove the seal guards from the wheel hub.
6. Remove a spacer nut from the axle assembly
Note: Thread locking adhesive has been applied to lock the spacer nuts
to the axle.
7. Remove the axle from the wheel assembly with the second spacer nut still
attached.
8. Pry out the seals and remove the bearings.
9. Inspect the bearings for wear or damage and replace if necessary.
Note: Bearing seals must be replaced after removal. Do not reuse bearing
seals.
1. Ensure that the wheel is clean and free of debris or excessive wear.
2. Pack the 2 tapered bearings with grease.
3. Insert 1 bearing and seal into the wheel.
4. Insert the assembled spacer nut and axle into the wheel.
5. With the open end of the wheel facing up, fill the area inside the wheel,
around the axle with grease
6. Insert the second bearing and seal into the wheel.
7. Apply thread locker to the second spacer nut and thread onto the axle.
8. Torque the nut to 9 ± 0.5 N•m (78 ± 3 in-lb) to seat the bearings, loosen and
then torque to 3 ± 0.5 N•m (23 ± 3 in-lb).
Note: Ensure that the axle does not extend beyond the nut on either side of
the wheel assembly.
9. Install the seal guards onto the wheel hub and assemble the wheel onto
the caster fork.
10. Lower the unit and verify proper function.
Note: To prevent seal and bearing damage, check the bearing adjustment
often. The tire should not spin freely (more than one or two 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. Reapply the thread locking
adhesive to the spacer nut.
11. Connect the battery by installing the positive cable first, then the negative
cable to the battery.
Page 6–31 Chassis: Service and Repairs