Toro Z Master 7500-D Series Service Manual page 68

Caster Wheel Assembly Replacement (Cont.)
Assembly
1. Ensure that the wheel is clean and free of debris or excessive wear.
2. Pack the two tapered bearings with grease.
3. Insert one bearing and one new 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, full of 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 nut to 78 ± 3 in-lbs. (101-110 Nm) to seat the bearings. Loosen, then torque to 23 ± 3 in-lbs. (27-35
Nm).
NOTE: Make sure 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 thread locking adhesive to
the spacer nut.
Z Master 7500-D Series Service Manual
March 2018 - Digital Edition
CHASSIS
5-15
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