Checking The Tire Pressure; Checking The Wheel Lug Nuts; Torquing The Wheel Hub Castle Nut; Adjusting The Caster-Pivot Bearing - Toro Z Master Professional 7000 Series Operator's Manual

Figure 73
1. Tracking knob
2. Hydraulic tank
3. Hydraulic pumps

Checking the Tire Pressure

Service Interval: Every 50 hours/Monthly (whichever
comes first)
Maintain the air pressure in the front and rear tires
at 90 kPa (13 psi). Uneven tire pressure can cause
uneven cut. Check the tires when they are cold to get
the most accurate pressure reading.
Figure 74
g001070
4. Turn this way to track right.
5. Turn this way to track left.
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Checking the Wheel Lug
Nuts
Check and torque the wheel lug nuts to 122 to 129
N∙m (90 to 95 ft-lb).
Torquing the Wheel Hub
Castle Nut
Service Interval: After the first 100 hours
Every 500 hours thereafter
1. Remove the cotter pin.
2. Torque the castle nut to 319 N∙m (235 ft-lb).
3. Continue to tighten the nut slowly until the next
slot aligns with the cross hole in the wheel motor
shaft.
4. Insert the cotter pin and bend 1 tine over the
end of the shaft.
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. Park the machine on a level surface, disengage
the blade-control switch (PTO), and engage 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 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 75.
5. Install the dust cap
56
75).
(Figure 75).
(Figure 75).