DRIVING & SAFETY — 2
40
20 08 CONTESSA
The regulator adjustment knob has a positive
lock. Pull up on the knob to unlock; push
down on the knob to lock. Turn the knob
clockwise to increase air pressure; turn the knob
counterclockwise to decrease air pressure. A
stabilization procedure must be performed with
every tag axle regulator adjustment to enable a
constant air pressure reading.
Tag Axle Adjustment (42' only):
Start the motorhome and allow
the air system to reach a full
charge (indicated by a release of
air from the air dryer).
Pull the knob to unlock the
regulator. Turn the knob
clockwise to increase pressure
and counterclockwise to decrease.
Ensure the air system is still at
full charge.
Raise the tag axle using the tag axle
switch on the driver’s console. Allow
approximately 20 seconds for the system
to discharge air from the tag axle air
bags.
Lower the tag axle. The regulator will
hold the new air pressure setting.
Push down on the regulator adjustment
knob to lock the setting.
When increasing the air pressure setting, allow
approximately a 2 lbs. pressure increase before
the stabilization process.
Example: If the desired setting is 30 psi,
slowly rotate the regulator adjustment knob
clockwise to 28 psi. Perform the stabilization
procedure. Regulator setting will stabilize to
approximately 30 psi.
CAUTION:
Ground clearance is reduced with the
tag axle in the raised position.
Scales
Certied public scales are located in moving
and storage lots, farm supplies with grain
elevators, gravel pits, recycling companies
and large commercial truck stops. A public
scale may be located by looking in the local
telephone book yellow pages under Scales-Public
or Weighers. A nominal fee may be charged, but
this is money wisely spent.
Weight scale types and weighing methods
determine the procedure used to calculate proper
tire ination pressure and axle loading. Several
types of scales are in use today. A platform scale
allows the entire motorhome to t on the scale to
read the GVW in one scale recording. A segmented
platform scale is designed to weigh one axle at a
time. A single axle scale weighs one axle at a time.
Some scales read only one wheel position at a time
due to physical size. Several scale readings may
be required to determine the GAW or GVW total.
Each wheel position requires weighing to accurately
determine the correct tire ination pressure.
NOTE:
Independently weighing each wheel
position is the most accurate method
in determining proper tire pressure.
Weighing the entire axle will not
accurately determine actual weight
carried by each wheel position. When
weighing the drive axle dual position,
divide total weight by two to determine
the weight carried by each tire.
The scales and motorhome must be level when
weighing to obtain an accurate scale reading.
Even when an axle is not physically on the
scale, a denite lean in the motorhome will
produce inaccurate scale readings.
Raising the tag axle reduces road clearance
090507
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