THOR Palazzo 2015, Owner'S Manual

Page: 43 / 150

42
Never place the jack under a bumper or under the edge of
the sidewall. Always place the jack as specified by the
chassis owner’s manual. Never use the rear differential
as a jacking point. Use the jack only for changing tires.
NEVER get underneath the vehicle when using the jack;
never start or run the engine while the vehicle is on the
jack.
The most important factor in maximizing the life of your tires is maintaining proper
inflation pressure. An under inflated tire will build up excessive heat that may go beyond
the prescribed limits of endurance of the rubber and the radial cords. Over inflation
will reduce the tire’s footprint on the road, reducing the traction, braking capacity, and
handling of your vehicle. An over inflated tire will also cause a harsh ride and uneven
tire wear.
To determine the correct air pressure for your tires, load your motorhome as you would
normally for travel, including water and fuel. Determine the correct air pressure for the
weight on each axle and adjust the pressure according to the Federal Certification
Label when the tires are cool or have not been driven for more than one mile. Never
reduce the air pressure in a hot tire.
Never let air out of a hot tire.
Now that you have found what the correct air pressure per axle needs to be for your
motorhome when loaded, you need to know when to check your air pressure. You
should check the air pressure every two weeks or at least once a month and before any
major trip. Your motorhome’s air pressure should be checked every morning on long
trips. On short trips of a day or less of driving each way, your tires should be checked
before you start your trip home. If your vehicle is stored for any length of time, the air
pressure should be checked prior to storage, but more importantly, when it comes out
of storage.
Check your tires when they are “cold” and have not been driven for more than one
mile. The stated load capacity for a given cold inflation pressure is based on ambient
outside temperature.
To maintain the inflation pressure in your tires you will need the proper equipment.
It is recommended that you purchase a quality truck tire air gauge, which has an
angled dual head. This type of gauge allows you to check inflation on the inner dual
wheel which has the valve stem pointed away from you. Nothing should restrict your
ability to check your tire’s air pressure daily when you are driving your motorhome.
Pressure sealing valve caps should always be used to prevent air from escaping from
the valve stem. If you use valve stem extension hoses, make sure they are good
quality stainless steel braid reinforced, and are securely anchored to the outer wheel. If
your motorhome has wheel covers which must be removed to check the inflation, then
On the Road Safety
TIRE CARE
CHECK AIR
PRESSURE
CAUTION
Changing a tire on a motorhome is more difficult than
an ordinary automobile. Motorhome tires are larger
and heavier than ordinary tires. Whenever possible,
call for roadside assistance to help you in changing
your tires. This task should not be done alone due to
the weight of the unit. Motorhomes are extrememly
heavy. changing a flat tire is best left to a professional
mechanic with the proper tools.
CAUTION