Section 13: WHEELS, HUBS & TIRES
PA1562
10
NOTE
Check the inflation pressure of the spare tire
periodically to keep it ready for use. Inflate
spare tire to the pressure of the tire, which has
the highest pressure on the vehicle. When
installing, deflate to correct pressure if
necessary.
10.2 CHANGING A FLAT
In case of flat tire, refer to appropriate procedure
under “Wheel Maintenance" heading in this
section.
NOTE
For hydraulic jack placement, refer to Section
18 "Body", under heading "Vehicle Jacking
Points".
DANGER
Place jack on stable and level ground; if
necessary, place a board under the jack. Do
not raise the vehicle until you are sure the jack
is securely engaged.
WARNING
To prevent personal injury and/or equipment
damage, use only the recommended jacking
points. Passengers must not remain inside
vehicle while wheel is being replaced.
CAUTION
Adjust tire pressure according to the
appropriate cold tire inflation-pressure.
NOTE
Store damaged wheel in spare tire
compartment. Repair and balance the flat tire
as soon as possible.
10.3 SPARE WHEEL MAINTENANCE
Maintenance of the spare wheel and tire
consists in ensuring that tire inflation pressure is
the same as the tire on the coach that has the
highest inflation pressure (refer to
“Specifications” in this section for the
recommended tire inflation pressure). Inspect
rim to ensure that there is no important
corrosion. In addition, check if spare wheel
covering is in good condition and check that
spare tire is securely fastened in compartment.
11. TIRE MAINTENANCE
The most critical factor in tire maintenance is
proper inflation (Fig. 9). No tire is impervious to
loss of air pressure. To avoid the hazards of
under inflation, always maintain tires at their
recommended inflation pressure. Improper
inflation decreases tire life.
An under inflated tire builds up heat that can
cause sudden tire destruction, resulting in
improper vehicle handling and possible loss of
vehicle control. At least once a week, before
driving (when tires are cold), check inflation
pressure on all the tires, including the spare tire.
This is especially important in cases when
different drivers operate the vehicle.
WARNING
Failure to maintain correct tire inflation
pressure may result in sudden tire destruction,
improper vehicle handling, and will cause
rapid and irregular tire wear. Inflation pressure
should be checked weekly and always before
long distance trips.
11.1 INFLATION PRESSURE
• Vehicles equipped with BERU TPMS
On vehicles equipped with the Beru Tire
Pressure Monitoring System (TPMS), it is better
to use the TPMS display as the primary
reference to judge when tire pressure need
adjustment.
The TPMS presents pressure readings of each
tire as a +/- deviation from the wanted target.
If a tire reads within +/- 3 PSI no adjustment is
needed.
If a tire reads -4 PSI and below, re-inflate by the
marked amount.
If a tire reads +4 PSI and above , deflate by the
marked amount.
Relying on the TPMS system is better than
relying on a hand gage since the TPMS is
temperature compensated and remain accurate
no matter if the tires are cold or hot.
Tires take up to 3 hours to get down to ambient
temperature after a ride. A common mistake
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