Tire Matching; Wheel Balancing; Tire Rotation - PREVOST H3-41 Maintenance Manual

FIGURE 34: TIRE LIFE / INFLATION PRESSURE
WARNING
Recommended tire inflation pressures and
maximum allowable loads apply to speeds up
to 65 mph (105 km/h). Do not drive vehicle at
a higher speed than 65 mph (105 km/h) or
above the posted speed limit.
WARNING
All tires on the same axle should always be
inflated to the same pressure. There should
not be a difference in pressure between right
and left tires on the same axle.
A 5 psi (35 kPa) under-inflation in one front tire
can not only reduce vehicle maneuverability,
but will create steering hazards which can lead
to an accident.

15.2 TIRE MATCHING

Unmatched tires on drive axle will cause tire
wear and scuffing, as well as possible damage
to the drive unit.
recommended that tires be matched within 1/8"
(3 mm) of the same rolling radius.
NOTE
It is recommended that all tires on coach be of
the same type.
Consequently, It is
SECTION 13: WHEELS, HUBS AND TIRES

15.3 WHEEL BALANCING

Before balancing, wheels must be clean and free
from all foreign matter. The tires should be in
good condition and properly mounted. An
unbalanced wheel can be due to a bent wheel or
improper mounting. Before removing the wheel
from the vehicle, check for swaying movement
and if necessary, check the wheel lateral run-out
as outlined under heading "Wheel Straightness
Check".
WARNING
When balancing wheel and tire assemblies, it
is strongly recommended to closely follow
instructions covering the operation of wheel
balancer.
CAUTION
A maximum of 16-oz (450 g) of balancing
weight is recommended. If more weight is
necessary, check and correct the cause.

15.4 TIRE ROTATION

Radial tires should be rotated only when
necessary. If the tires are wearing evenly, there
is no need to rotate. If irregular wear becomes
apparent or if the wear rate on the tires is
perceptively different (from axle to axle), then
tires should be rotated in such a manner as to
alleviate the condition.
NOTE
There is no restriction on criss-cross rotation.
PA1621 Maintenance Manual All Series | January 2017
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