Toro Workman MDE 07299, Operator'S Manual

Page: 31 / 44

Figure 33
1. Hub and rotor assembly 2. Spindle
7. Wipe clean the spindle with a rag.
8. Repeat steps 1 through 7 to the hub and rotor at the
other side of the machine.
Greasing the Wheel Bearings
1. Remove the outboard bearing and bearing race from
the hub (
Figure 34 ).
Figure 34
1. Outboard bearing 4. Inboard-bearing race
2. Outboard-bearing race 5. Inboard bearing
3. Bearing cavity (hub) 6. Seal
2. Remove the seal, inboard bearing and bearing race
from the hub (
Figure 34 ).
3. Wipe clean the seal and check for wear and damage.
Note:
Do not use cleaning solvent to clean the seal.
Replace the seal if it is worn or damaged.
4. Clean the bearings and races, and check these parts for
wear and damage.
Note:
Replace all worn or damaged parts. Ensure that
the bearings and races are clean and dry.
5. Clean the cavity of the hub of all grease, dirt, and debris
(
Figure 34 ).
6. Pack the bearings with the specified grease.
7. Install the inboard and outboard bearing races into the
hub (
Figure 34 ).
Note:
Ensure that the races are fully seated in the
bores of the hub.
8. Fill the cavity of hub 50 to 80% full of the specified
grease (
Figure 34 ).
9. Assemble the inboard bearing onto the race at the
inboard side of the hub and install the seal (
Figure 34 ).
10. Repeat steps 1 through 9 to the bearings for the other
hub.
Installing the Hub and Rotor
1. Apply a light coat of the specified grease to the spindle
(
Figure 35 ).
Figure 35
1. Retainer 5. Hub, rotor, inner bearing,
race, and seal
2. Spindle nut 6. Spindle
3. Tab washer 7. Holes (brake mount of the
spindle frame)
4. Outer bearing
2. Assemble the hub and rotor onto the spindle with the
rotor inboard (
Figure 35 ).
3. Assemble the outboard bearing onto the spindle and
seat the bearing to the outboard race (
Figure 35 ).
4. Assemble the tab washer onto the spindle ( Figure 35 ).
5. Thread the spindle nut onto the spindle and tighten the
nut while rotating the hub (
Figure 35 ).
Note:
Tighten the nut and rotate the spindle until the
bearings are fully seated and the hub has no linear-end
movement.
6. Loosen the spindle nut until the hub rotates freely.
7. Torque the spindle nut to 170 N-cm (15 in-lb) while
rotating the hub.
8. Install the retainer over the nut and check the alignment
of the slot in the retainer and the hole in the spindle for
the cotter pin (
Figure 36 ).
Note:
If the slot in the retainer and the hole in the
spindle are not aligned, tighten the spindle nut to align
the slot and hole to a maximum torque of 226 N-cm
(20 in-lb) on the nut.
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