Checking The Tire Pressure; Adjusting The Caster-Pivot Bearing; Adjusting The Electric Clutch - Toro 74534TE GrandStand Operator's Manual

Checking the Tire Pressure

Service Interval: Every 50 hours/Monthly (whichever
comes first)
Maintain the air pressure in the rear tires at 83 to 97 kPa (12
to 14 psi).
Important: Uneven tire pressure can cause an uneven
cut.
Note: The front tires are semi-pneumatic tires and do not
require air-pressure maintenance.
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 the caster and tighten the
lock nut (Figure 59).
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 (Figure 59).
Important: Make sure spring washers are
installed correctly as shown in Figure 59.
5. Install the dust cap (Figure 59).
Figure 58
1. Spring washers
2. Locknut

Adjusting the Electric Clutch

Service Interval: Every 100 hours—Check the electric
clutch.
The clutch is adjustable to ensure proper engagement and
proper braking.
1. Insert a 0.4 to 0.5 mm (0.01 to 0.02 inches) feeler gauge
through one inspection slot in the side of the assembly.
Note: Make sure it is between the armature and the
rotor friction surfaces.
Note: The gap needs to be at least 0.4 mm (0.02
inches) and not more than 0.5 mm (0.02 inches).
2. If adjustment is needed, use a 0.4 mm (0.02 inches)
feeler gauge to set each of the 3 adjustment-slot
positions.
3. Tighten the lock nuts until there is slight binding on
the feeler gauge, but it can be moved easily within the
air gap (Figure 60).
4. Repeat this for the remaining slots.
5. Check each slot again and make slight adjustments until
the feeler gauge between the rotor and armature with
very slight contact between them.
43
Figure 59
3. Dust cap