Toro Groundsmaster 7210, Service Manual

Page: 285 / 342

Disassembling the Polar Trac Wheel Hub (continued)
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Figure 200
1. Dust cap 5. Bearing cup
2. Cotter pin 6. Wheel hub
3. Slotted hex nut 7. Wheel stud (5 each)
4. Bearing cone 8. Seal
1. Park the machine on a level surface, lower the implement, shut off the
engine, set the parking brake, and remove the key from the key switch.
2. Remove the wheels as necessary to get access to the wheel hub(s); refer
to Removing the Polar Trac Wheels (page 6–6) .
3. Support the machine with jack stands.
4. Remove the dust cap from the wheel hub.
5. Remove the cotter pin and slotted hex nut. Slide the wheel hub with bearings
from the spindle shaft.
6. Remove the seal from the wheel hub and discard the seal.
7. Remove the bearing cones from both sides of the wheel hub.
8. Clean the bearings in solvent, and clean the inside of the wheel hub.
Note: Ensure that the bearings are in good operating condition.
9. Inspect the bearing cups for wear, pitting, or other damage. Replace all
the parts that are worn or damaged.
Assembling the Polar Trac Wheel Hub
1. If the bearing cups were removed from the wheel hub, press new cups into
the hub until they seat against the shoulder of the hub.
2. Pack the 2 bearings with grease and install 1 bearing into the bearing cup on
the inboard side of the wheel hub.
IMPORTANT
The lip of the seal must be toward the bearing. Press the seal into
the wheel hub so that it is flush with the end of the wheel hub.
Groundsmaster 7210 Page 6–23 Chassis: Service and Repairs
16222SL Rev C