Rear Wheel Bearing Service - Toro Groundsmaster 300 Series Service Manual

Rear Wheel Bearing Service

Disassemble, clean, repack and adjust the rear wheel
bearings after each 500 hours of operation or once a
year. Use No. 2 general purpose lithium base grease
containing E.P. additive. If operating conditions are ex-
tremely dusty and dirty, it may be necessary to perform
this maintenance more often.
1. Jack up the rear of the machine until the tire is off the
floor. Support the machine with jack stands or blocks to
prevent it from falling.
2. Remove the dust cap from the end of the wheel
spindle (Fig. 18).
3. Remove the cotter pin, slotted nut, and washer. Slide
the wheel off spindle shaft.
4. Pull the seal out of the wheel hub.
5. Remove the bearings from both sides of the wheel
hub. Clean the bearings in solvent. Make sure the
bearings are in good operating condition. Clean the
inside of the wheel hub. Check the bearing cups for
1. Wheel hub
2. Wheel spindle
3. Dust cap
4. Cotter pin
Repairs
(2WD Units)
2
10
7
1
9
8
Figure 18
5. Slotted nut
6. Washer
7. Seal
8. Bearing cone
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wear, pitting or other noticeable damage. Replace worn
or damaged parts.
6. If bearing cups were removed from the wheel hub,
press them into the hub until they seat against the
shoulder.
7. Pack both bearings with grease. Install one bearing
into the cup on inboard side of the wheel hub. Lubricate
the inside of the new lip seal and press it into the wheel
hub.
IMPORTANT: The lip seal must be pressed in so it is
flush with the end of the hub. The lip of the seal must
be toward the bearing.
8. Pack inside of wheel hub with some grease (not full).
Install remaining bearing into the bearing cup.
9. Slide the wheel onto the spindle shaft and secure it
in place with the flat washer and slotted nut. DO NOT
tighten the nut or install the cotter pin.
10. Adjust preload on the wheel bearings.
6
4
5
11
12
9. Bearing cup
10. Stud
11. Wheel
12. Wheel nut
3
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Groundsmaster 300 Series