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Adjusting the Caster-Pivot
Bearing
Service Interval: Every 500 hours/Yearly (whichever
comes first)
1.
Disengage the blade-control switch (PTO), move
the motion control levers to the N
position, and set the parking brake.
2.
Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3.
Remove the dust cap from the caster and tighten
the locknut
(Figure
4.
Tighten the locknut until the spring washers are
flat, and then back off a 1/4 turn to properly set
the preload on the bearings
Important:
Make sure that the spring
washers are installed correctly as shown in
Figure
60.
5.
Install the dust cap
Figure 60
1. Spring washers
2. Locknut
-
EUTRAL
LOCK
60).
(Figure
60).
(Figure
60).
3. Dust cap
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.
Remove the locknut and wheel bolt holding the
caster wheel to the caster fork
1. Locknut
2. Bushing
3. Spanner bushing
2.
Remove 1 bushing, then pull the spanner
bushing and roller bearing out of the wheel hub
(Figure
61).
3.
Remove the other bushing from the wheel hub
and clean any grease and dirt from the wheel
hub
(Figure
g001297
4.
Inspect the roller bearing, bushings, spanner
bushing and the inside of the wheel hub for wear.
Note:
Replace any damaged or worn parts
(Figure
61).
5.
Place 1 bushing into the wheel hub
6.
Grease the roller bearing and spanner bushing,
and slide them into the wheel hub
7.
Place the second bushing into the wheel hub
(Figure
61).
8.
Install the caster wheel into the caster fork and
secure it with the wheel bolt and locknut
61).
39
(Figure
Figure 61
4. Roller bearing
5. Caster wheel
6. Wheel bolt
61).
(Figure
61).
g009453
(Figure
61).
61).
(Figure
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