Nortrac NorTrac 40XT, Owner'S Manual, Page: 34 / 107

Operation Description
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WARNING :
1. Never leave the tractor unattended with the engine running. Leaving the tractor running could result in the
tractor accidentally moving and going out of control, which can result in a serious accident.
2. If the tractor has to be parked on a slope, engage the gears. Set the shuttle gearshift to forward on an uphill
slope and reverse on a downhill. This will prevent the tractor from accidentally moving and getting out of
control, causing an accident.
2.13 Tire Assembly and Disassembly
2.13.1 Tire Use

The tires are important parts of the tractor. Attention should be paid to their use and maintenance in order
to prolong tire service life.

All of the tires have specified load values. An overload will deform the tire. The sidewall will bend
excessively, and possibly rupture. The fabric of the tire body, as well as the cushion layer, also deforms
easily. The fabric layer will become loose until the tire ruptures. This is especially true when the road
surface is uneven or impacted by obstacles.

The inflation pressure of the tires must conform to the specifications. Service life is affected when the tire
pressure is too high or too low. If the pressure is too low, the tire will have excessive wear, and service life
will be limited. Both inner and outer tires will wear more rapidly when pressure is low. When pressure is
low, steering will be adversely affected. If the air pressure on the front tires is too low, steering will be
difficult. If tire pressure is too high, the tire body fabric will be stretched excessively and more apt to
rupture. The wear on the tire surface will be accelerated. The tractor vibration will be increased.
During field operations, the air pressure of the tire should be appropriately lower than when running on
the road. Tire pressure is best checked under normal temperatures. Checking a tire when it is hot can result
in an incorrect measurement. When driving the tractor, avoid jumping over obstacles at high speed, sudden
braking or quick turning. When driving on gravel surfaces tire slippage should be avoided, when possible.

During use, the tires should be kept clean of any oil, acid, alkaline chemicals or corrosives. Keep the tires
out of bright sunshine and excessive heat as much as possible to prevent the rubber from degrading.

The front wheel alignment and toe-in should be checked regularly. Failure to do so can result in excessive
tire wear. When tire wear is nonuniform, the left and right tires can be switched.