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Servicing the Caster
Wheels and Bearings
The caster wheels rotate on a roller bearing supported
by a spanner bushing. If the bearing is kept well
lubricated, wear will be minimal. Failure to keep the
bearing well lubricated causes rapid wear. A wobbly
caster wheel usually indicates a worn bearing.
1.
Disengage the blade-control switch (PTO) and
move the motion-control levers outward to the
P
position.
ARK
2.
Shut off the machine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3.
Remove the locknut and wheel bolt holding the
caster wheel to the caster fork.
Figure 52
1. Locknut
2. Bushing
3. Spanner bushing
4.
Remove 1 bushing, then pull the spanner
bushing and roller bearing out of the wheel hub.
5.
Remove the other bushing from the wheel hub
and clean any grease and dirt from the wheel
hub.
6.
Inspect the roller bearing, bushings, spanner
bushing and the inside of the wheel hub for wear.
Note:
Replace any damaged or worn parts.
7.
Place 1 bushing into the wheel hub.
8.
Grease the roller bearing and spanner bushing,
and slide them into the wheel hub.
9.
Place the second bushing into the wheel hub.
10.
Install the caster wheel into the caster fork and
secure it with the wheel bolt and locknut.
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4. Roller bearing
5. Caster wheel
6. Wheel bolt
11.
Tighten the locknut until the spanner bushing
bottoms against the inside of the caster forks.
12.
Grease the fitting on the caster wheel.
Checking the Wheel-Lug
Nuts
Service Interval: After the first 100 hours—Check the
wheel-lug nuts.
Check and torque the wheel-lug nuts to 75 to 88 N∙m
(55 to 65 ft-lb).
Changing the Transmission
Fluid
Service Interval: After the first 50 hours
Every 500 hours
Fluid type: Toro Synthetic HV Electric Motor Drive Oil
Capacity: 150 mL (5 fl oz)
1.
Park the machine on a level surface, disengage
the PTO, and move the motion-control levers
outward to the P
2.
Shut off the machine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3.
Remove the tire.
4.
Place a drain pan under the transmission.
37
position.
ARK
Figure 53
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