Chassis Information
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S I G N A T U R E
1 0 • 2 6 5
To remove fitting:
• With a firm grip hold the air hose near the fitting to prevent recoil.
• Slide the locking collar back to release fitting. The collar will lock
into the open position when fully retracted.
• Replace the protective dust cap when finished.
This fitting is not designed to charge the air system on the motorhome. The air
supply for the auxiliary air fitting is charged from the front air tank through a
pressure protection valve. Due to the small air pressure restriction of the pressure
protection valve, maximum supply pressure is approximately 95 psi with air sys-
tem on the motorhome charged to 120 psi.
The air system on the motorhome can be charged from an exter-
nal air supply source. Located in the generator compartment is a
type C automotive male fitting. Caution should be used when charg-
ing the air system from this fitting. The air supplied from an external
source may contain moisture. Compressed air introduced into the air
system on the motorhome from this fitting is not filtered by the air
dryer. The auxiliary air charge fitting will charge the front and rear
air tanks. A check valve is installed to prevent air from escaping.
CAUTION: The external air supply source should be regulated to
charge the air system on the motorhome no higher than 120 psi.
Damage to the air system or pneumatically operated items may occur.
The ride height valves inflate or deflate the air bags keeping the motorhome at
proper suspension height throughout the load range. There are three ride height
control valves used on the motorhome. Two are used on the rear drive axle to con-
trol rear suspension height and left or right tilt of the motorhome. Only one valve
is used to control front axle suspension height. The ride height control valves are
mounted to the main frame of the motorhome just above the axles. Each valve has
a linkage rod connected the axle. The valves make small air adjustments to the air
springs while traveling. The amount of system air used depends on the type of
road surface and driving styles.
Should it become necessary to check the suspension ride height, start with hav-
ing the air system fully charged and the suspension at a normalized height. The
motorhome must be on a flat level surface. Suspension height distance is meas-
ured from the top of the H-Frame to the bottom of the Main Frame Rail. Specified
distances may vary plus or minus 1/4”. Small offset adjustments to the rear valves
may be necessary to compensate for slight tilt. Example: Adjusting curbside rear
height control valve up will pivot roadside front corner down.
NOTE: Driveline angle is affected by the suspension ride height. Improper
driveline angle can damage suspension or shorten the life of universal joints.
Shock absorbers and air springs are in travel centers at proper ride height.
RIDE HEIGHT
VALVES
-Adjusting
AIR SYSTEM - CHARGING
(EXTERNAL)
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