Checking The Tire Pressure; Checking The Wheel Lug Nuts; Adjusting The Caster-Pivot Bearing - Toro Z Master Professional 7500-D Series Operator's Manual

Checking the Tire Pressure

Service Interval: Every 50 hours/Monthly (whichever
comes first)
Rear tire air pressure specification: 124 kPa (18
psi).
Note:
The caster tires are semi-pneumatic tires and
do not require air pressure maintenance.
DANGER
Low tire pressure decreases machine side-hill
stability. This could cause a rollover, which
may result in personal injury or death.
Do not under-inflate the tires.
Check the air pressure in the rear tires. Add or remove
air as needed to set the air pressure in the tires to the
tire air pressure specification.
Important:
Maintain pressure in all tires to
ensure a good quality of cut and proper machine
performance.
Check the air pressure in all the tires before
operating the machine.
Figure 54
Checking the Wheel Lug
Nuts
Service Interval: After the first 100 hours—Check the
wheel lug nuts.
Torque the wheel lug nuts to 115 to 142 N∙m (85 to
105 ft-lb).
Adjusting the Caster-Pivot
Bearing
Service Interval: Every 500 hours/Yearly (whichever
1. Park the machine on a level surface, disengage
the blade-control switch, 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 the caster and tighten
the locknut
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:
washers are installed correctly as shown in
Figure 55.
5. Install the dust cap
g001055
1. Spring disc washers
49
comes first)
(Figure 55).
(Figure
Make sure that the spring
(Figure 55).
Figure 55
55).
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