Navistar WorkStar Series, Руководство оператора

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Maintenance Instructions
Loads
WARNING
Loading tires beyond their rated capacity
decreases tire life requiring more frequent
replacement of tires.
Overloading creates an
unsafe condition that may result in sudden air
loss from a tire failure resulting in an accident
that could cause property damage, personal
injury, or death.
NOTE: The load rating of the tires installed on your vehicle at
the time of your vehicle’s production is at or in excess of the
Gross Axle Weight Rating (GAWR) generally found on a label
on the B-pillar of your vehicle. When replacing tires, be sure
that the replacement tire load rating (listed separately in pounds
and kilograms on the tire sidewall for single or dual applications)
multiplied by the number of tires on that axle is equal to or higher
than the specific listed Steer Axle or Drive Axle GAWR. Failure
to do so will adversely affect maximum load-carrying capacity.
Tires with the same size specification do not always have the
same load specification.
Dual Tires Matching
Dual tires should be matched using tires of equivalent size. Tires
which differ more than 1/4 inch (6 mm) in diameter or 3/4 inch
(19 mm) in circumference should not be mounted on the same
dual wheel assembly.
Dual Tires Mixing
NOTE: Never mix bias and radial tires on this vehicle.
It is recommended for best overall performance that only radial
tires be used on this vehicle.
Never mix different tire sizes or constructions on the same axle.
Rotation
• Steer tires that have developed some type of irregular wear
pattern can be rotated to drive axles if rib tires are being
used on all wheel positions. Applying steer tires to a drive
position will often wear off the irregularities and they can be
moved back to the steer axles or run out to retread stage on
the rear axle.
• Another rotation possibility for fleets with rib tires in all wheel
positions is to break in the new steer tires in the drive axle
positions, then move them to steer axles. This will wear
away tread rubber relatively quick in the early life of a tire
when it is most likely to develop an unusual wear pattern.
• Drive axle tires may be placed on the other end of the same
axle so that direction of rotation is reversed. This is often
helpful if a heel and toe or alternate wheel nut wear pattern
has developed.
Rotation Is Advisable
1. If front (steering) axle tires become irregularly worn,
move to rear position.
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