Checking The Tire Pressure; Checking The Wheel Hub Slotted Nut; Adjusting The Caster Pivot Bearing - Toro Z MASTER G3 Operator's Manual

Left control lever shown
1. Control lever
2. Bolt

Checking the Tire Pressure

Service Interval: Every 50 hours/Monthly (whichever
comes first)
Maintain the air pressure in the rear tires at 13 psi (90
kPa). Uneven tire pressure can cause uneven cut. Check
the tires when they are cold to get the most accurate
pressure reading.
Note: The front tires are semi-pneumatic tires and do
not require air pressure maintenance.
Figure 61
3. Stop plate
Figure 62
Checking the Wheel Hub
Slotted Nut
Service Interval: After the first 100 hours
Every 500 hours
1. Remove the cotter pin.
2. Torque the slotted nut to 200 ft-lb (271 N-m).
3. Check the distance from the bottom of the slot in
the nut to the inside edge of the hole. Two threads
(0.1 inch) or less should be showing.
1. 0.1 inch max
4. If more than two threads (0.1 inch) are showing,
remove the nut and install a washer between the hub
and the nut.
5. Torque the slotted nut to 200 ft-lb (271 N-m).
6. Then tighten the nut until the next set of slots line
up with the cross hole in the shaft. Do not loosen
the nut to align the slot. If required, tighten to the
next set of slots.
7. Install the cotter pin. Use a new cotter pin if needed.
Note: Do not use anti-seize on the wheel hub.
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 64).
45
Figure 63
2. No more than two threads
(0.1 inch max) should be
showing here.