GILLIG LOW FLOOR, Руководство по обслуживанию

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Brakes & Wheels
289
Vehicle Operation Safety Precautions
• Do not overload tires. Ensure that the combination of load and vehicle weight does not exceed the
rated load of the tires or wheels used.
• Do not exceed maximum inflation pressures. This is determined by the size and ply rating of the
tire, but it is not to exceed the maximum inflation printed on the wheel and the side of the tire. It is
also important to maintain uniform inflation in both tires of a dual tire assembly so that the load is
equally distributed.
• Do not run a coach on one tire of a dual assembly. When there is a loss of air in one tire, its car-
rying capability is reduced and the load must be sustained by the other tire and wheel. Both tires
should be inflated to balanced recommended pressures before further operation.
• Never reinflate a tire which has been run flat without first thoroughly inspecting the tire and the
wheel. It is especially important to make sure the lock ring is secure in the gutter and has not been
damaged.
• Check the wheel nuts periodically. Loose wheel nuts can cause dangerous wheel shimmy and loss
of vehicle control. Excessive torque is also dangerous in that it can cause stud and ring breakage.
Refer to the torque recommendations in this section.
Wheel Maintenance
1. Before a new vehicle goes into service and after each wheel removal, all wheel stud nuts should
be properly tightened. Refer to instructions for wheel nut torque and tightening sequence in this
section. See that studs and nuts are free from oil and grease.
2. Retighten the nuts every 100 miles (160 km) for the first 500 miles (805 km) to offset the setting-
in of the clamping surfaces.
3. Inspect wheel stud nuts at least every 1,000 miles (1,610 km) thereafter. If the coach is subjected
to severe driving conditions, inspect it daily, regardless of the mileage.
4. When changing wheels or tires and before assembling wheels to hubs, remove dust, dirt, and
other foreign materials from all surfaces. Hand or electric wire brushes, sand blasting, or chemi-
cal baths may be used. The gutter of the rim base should be cleared of rust and other materials
which may obstruct the safe, positive seating of rings.
5. The bead seat areas of the wheel should be free of rust and rubber deposits. This is especially
important for drop center tubeless wheels because the 15° bead seat is the air sealing element.
6. Rings should be cleaned with wire brushes. Pay particular attention to the seating surfaces and
the bead seat areas.
7. Paint the wheel with a brush or spray with fast drying metal primer. Surfaces should be clean and
dry prior to painting. Ensure that all bare metal areas on the wheel are covered. This is especially
important on drop center tubeless wheels because warm and sometimes moist air is in constant
contact with the metal surface on the tire side of the wheel. Dual rear wheels should be posi-
tioned with the valve stems 180° apart.