Adjusting The Caster Pivot Bearing; Servicing The Caster Wheel And Bearings - Toro 74549 Operator's Manual

Figure 59
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 neutral locked position
and set the parking brake.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Remove the dust cap from caster and tighten lock nut
(Figure 60).
4. Tighten the locknut until the spring washers are flat and
then back off a 1/4 turn to properly set the pre-load on
the bearings (Figure 60).
Important: Make sure spring washers are
installed correctly as shown in Figure 60.
5. Install the dust cap (Figure 60).
1. Spring Washers
2. Lock Nut
Servicing the Caster Wheel
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
will cause 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 (Figure 61).
1. Locknut
2. Wheel Bolt
3. Bushing
41
Figure 60
3. Dust Cap
Figure 61
4. Spanner Bushing
5. Roller Bearing