Holiday Neptune 2004, Owner'S Manual

Page: 356 / 416

356 • SECTION 10 --- CHASSIS INFORMATION NEPTUNE 2004
To adjust the suspension ride height
begin with:
• The motorhome on flat level surface.
• Air system fully charged.
• Suspension at normal ride height.
Start by checking the distance in the front.
1. Measure the distance between the mounting
plates of the air springs at the centerline of
the air spring.
2. If the measurement is off, loosen the
adjusting lock nut at the eccentric slot on
the valve.
3. Move the plastic arm up to raise suspension
height, this will inflate the air spring. Move
the plastic arm down to lower suspension
height, this will deflate the air spring.
Make adjustments in small increments.
4. After obtaining the specified distance,
insert a 1/8" or 7/64" inch twist drill bit
into the plastic arm and valve body. This
will center the travel of internal piston.
Tighten adjusting lock nut between 60 - 80
in/lbs.
5. Check adjustments made by using the Air
Dump switch to deflate air springs. Start
the engine and allow the air system to
become fully charged. Allow the suspension
to adjust and come to a neutral setting.
6. Re-check the suspension height measurement.
Follow the same procedure for each rear
control valve.
7. Re-check the front suspension height after
adjusting the rear height control valves.
NOTE: Do not modify length of the linkage rods. Make any necessary
adjustments using eccentric slot on the ride height control valve.
The proper Ride Height measurements are: 6 ½" front and 8" rear. Ride heights
should be within ¼".
Once set correctly, the ride height setting should not change, except in the case
of a component failure. This is usually characterized by a severe "listing" of the
vehicle, or one end of the motorhome sitting unusually low or high. In the event
this occurs, it is not advisable to drive as body or suspension damage may result.
Adjusting Ride Height
090371c
090293b