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Service Manual

ManualsBrandsToro ManualsRiding EquipmentToro 78472
71727374757677787980
5-7
Digital Edition - TITAN® HD Service Manual
January 2018
Table of Contents
CHASSIS
Chassis
Caster Wheel Service (2500 Series)
Disassembly
1. Park the machine on a level surface and disengage the PTO. Stop the engine, wait for all moving parts to stop
and remove the key. Engage the parking brake.
2. Raise and support the unit so that the front wheels are off the ground.
3. Remove the caster wheel from the caster fork.
4. Remove the seal guards from the wheel hub.
5. Remove one of the spacer nuts from the axle assembly.
NOTE: Thread locking adhesive has been applied to lock the spacer nuts to the axle.
6. Remove the axle from the wheel assembly with the second spacer nut still attached.
7. Pry out the seals and remove the bearings.
8. Inspect the bearings for wear or damage and replace if necessary.
NOTE: Bearing seals must be replaced after removal. Do not reuse bearing seals.
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, ll 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.