Toro 30144, Руководство оператора

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11
MAINTENANCE
REPLACE CASTOR ARM BUSHINGS
Castor arms have bushings pressed into the top and
bottom of the tube. To check bushings, move castor
fork back and forth, and sidetoside. If castor spindle
is loose, bushings are worn and must be replaced.
1. Raise cutting unit so castor wheels are off the floor
and block up with jack stands.
2. Remove retaining ring, thrust washer(s) and
spacer (if installed on top) from top of castor spindle
(Fig. 8).
IMPORTANT: Note location of washers and spacer
on each spindle shaft to assure correct installation
and to maintain a level deck
3. Pull castor spindle out of mounting tube. Leaving
thrust washers on bottom of spindle.
4. Insert pin punch into mounting tube and drive out
bushings (Fig. 8). Clean inside mounting tube.
1076
1
2
2
Figure 8
1
Mounting tube
2
Bushing
5. Apply grease inside and outside new bushings.
Using a hammer and flat plate, drive bushings into
mounting tube.
6. Inspect castor spindle for wear; replace if
necessary.
7. Slide castor spindle through bushings and
mounting tube. Place thrust washer(s) and spacer(s)
onto spindle and secure with retaining ring.
IMPORTANT: When bushings are installed, the
inside diameter may collapse slightly, this may not
allow castor spindle to be installed. If castor
spindle does not slide through new bushings, ream
both bushings to inside diameter of 1.126 in.
(28.6mm).
8. Grease castor arm bushings using No. 2 general
purpose lithium base or molybdenum base grease.
SERVICE CASTOR WHEEL AND BEARING
Castor wheels rotates 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 will cause rapid wear. A wobbly
castor wheel usually indicates a worn bearing.
1. Remove lock nut and wheel bolt holding castor
wheel between castor fork (Fig. 9).
2. Remove bushing and pull spanner bushing and
roller bearing out of wheel hub.
1090
1
2
3
4
5
7
6
Figure 9
1
Wheel
2
Wheel bolt
3
Lock nut
4
Washer
5
Bushing
6
Roller bearing
7
Spanner bushing
3. Remove bushings from wheel hub. Clean grease
and dirt from wheel hub.
4. Inspect bearing, spanner, bushing and inside of
wheel hub for wear. Replace defective parts (Fig. 9).
5. To assemble place one (1) bushing into wheel hub.
Grease bearing and spanner bushing and slide into
wheel hub. Place second bushing into wheel hub.
6. Install castor wheel into castor fork and secure with
bolt and lock nut. Tighten until spanner bushing
bottoms against inside of castor forks.
7. Lubricate castor wheel bearing through grease
fitting, using No. 2 general purpose lithium base
grease.