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Maintenance Section
Tire Inflation Pressure Adjustment
The tire pressure in a warm shop area 18° to 21 °C
(65° to 70°F) will significantly change when you
move the machine into freezing temperatures. If you
inflate the tire to the correct pressure in a warm shop,
the tire will be underinflated in freezing temperatures.
Low pressure shortens the life of a tire.
Tire Damage
For pneumatic tires, when any cut, rip or tear is
discovered that exposes sidewall or tread area cords
in the tire, measures be taken to remove the product
from service immediately. Arrangements must be
made for replacement of the tire or tire assembly.
For polyurethane foam filled tires, when any of the
following are discovered, measures must be taken to
remove the product from service immediately.
Arrangements must be made for replacement of the
tire or tire assembly.
• A smooth even cut through the cord piles which
exceeds 7.5 cm (3 in) in total length.
• Any tears or rips (ragged edges) in the cord piles
which exceeds 2.5 cm (1 in) in any direction.
• Any punctures which exceed 2.5 cm (1 in) in
diameter.
If a tire is damaged but within the above noted
criteria, the tire must be inspected daily to ensure the
damage has not propagated beyond the allowable
criteria.
Tire Replacement
It is recommended that a replacement tire be the
same size, ply and brand as originally installed. Refer
to the appropriate parts manual for ordering
information. If not using an approved replacement
tire, the replacement tires must have the following
characteristics:
• Equal or greater ply/load rating and size of
original.
• Tire tread contact width equal or greater than
original.
• Wheel diameter, width and offset dimensions
equal to the original.
• Approved for the application by the tire
manufacturer (including inflation pressure and
maximum tire load).
Wheel Replacement
The rims installed have been designed for stability
requirements which consist of track width, tire
pressure and load capacity. Size changes such as
rim width, center piece location, larger or smaller
diameter, etc., without written factory
recommendations, may result in unsafe condition
regarding stability.
Wheel and Tire Installation
Torque lug nuts before first use and after each wheel
removal.
Note: If machine is equipped with directional tire
assemblies, the wheel and tire assemblies must be
installed with the directional tread pattern “arrows”
facing in the direction of forward travel.
1. Start all nuts by hand to prevent cross threading.
DO NOT use a lubricant on threads or nuts.
2. Tighten lug nuts in an alternating pattern. Torque
to 400-520 Nm (295-384 lb-ft).
TIP OVER HAZARD. Lug nuts must be installed and
maintained at the proper torque to prevent loose wheels,
broken studs and possible separation of wheel from
axle. Failure to comply could result in death or serious
injury.