Tiffin Motorhomes 2011 Phaeton, Руководство пользователя

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R O U T I N E M A I N T E N A N C E
14-30
Frequency of Checking Tire Inflation Pressures
When one has determined the “correct” tire inflation pressures for each of the motor-home tires (as a
function of the “fully loaded” condition, of course) and inflated the tires under “cold” (i.e., tires haven’t
been driven for more than one mile) conditions; then the air pressures in the tires should be periodically
checked to make sure that they retain their proper pressures. It is recommended that tire pressures be
checked at least once a month (every two weeks would be better) and before any major trip. On long
trips, the tires (Figures 14-10, 11) should be checked every “drive” morning. On short trips (a day or less),
the tires should be checked before one departs on the trip and again before one returns home.
Check tire pressures when they are “cold”; that is, the tires haven’t been driven at all or, at most, less than
one mile before being measured. In this manner, the tire pressure has not been increased by the heating
associated with tire sidewall and tread flexure
associated with traveling. If one must check tires
that are warm or hot, remember that they will
necessarily read higher than normal. Do not
“bleed” these tires down to the “cold pressure”
readings, as they will probably then be
underinflated when they are actually cool. Don’t
make any adjustments to tire pressures when the
tires are warm or hot, if such can be avoided.
To make these tire-pressure measurements, it is recommended that one purchase a high-quality, truck-tire
air gauge which has an angled dual head. This type of gauge allows one to check inflation pressures of
both the inner dual wheel which has the valve stem pointing towards one and on the outer wheel which
has the valve stem pointing away from one. Pressure-sealing valve caps should always be used to protect
the valve stems and prevent air from escaping from the valve stems.
Tire Wear, Balance, and Wheel Alignment
In addition to tire inflation considerations, the tires should also be periodically examined for other types of
normal “wear and tear.” If installed and maintained properly, all tires mounted on the motor home
should wear in a smooth, even pattern. If the tires begin to show irregular wear patterns and the motor-
home alignment is still correct, then sometimes just rotating the tires by changing wheel position and
rotation of the tires will allow the tires to wear evenly.
Check with the chassis manufacturer (Freightliner) and its literature (in the Owner’s Information Package)
for particulars on maintaining proper wheel alignment. Tire rotation should include the spare tire in the
rotation pattern and changing the direction of rotation of the tires. Tires can be rotated front-to-rear and
side-to-side.
Tire Cleaning
Proper cleaning of the tires will assure maximum years of service. A soft brush and the normal mild soap
should be used to clean the tires. Use care in applying any tire “dressing” product as these contain
Figure 14-10. Rear Tire Figure 14-11. Front Tire