Air Leveling

[George Lowry]

Hi Scott,

A more proper term is "height control valves" since they control the
height of the body above the axle. Most systems use a three valve
system; The rear having two valves, one on each side and the front
having one valve in the center, tied to both sides. As you have stated,
the rear valves have lateral or side to side control while the front
valve controls both sides, therefore only effecting the front to rear
height position.

What I have discovered is that the valve used by Bluebird has a lot of
plastic parts which tend to break. I would crawl under and check the
valves in the rear for broken parts first. You might disconnect the arm
from the valve to the axle and manually move the valve and see what
reaction you get. You may find that the valve is defective or
whatever.....
Be sure to block the body so that it does not fall on you. You may have
to drove the coach up on blocks to get clearance to crawl under. If you
personally replaced the other valves, this should be simple for you.

George Lowry
'95 WBDA 4203
Spearfish, SD Currently at the WMHA rally in Indio, CA Wonderful
weather and a great crowd gathering. y'all come!!

Scott Forman wrote:

>Hello all,
>
>Last year, I had a problem with my coach leaning to the right (curb)
>side. After consulting Blue Bird, they suggested I replace the right-
>side leveling valve on the rear axle, so I did. The problem
>persisted, so I also replaced the left side valve. That fixed it,
>and the air suspension has worked perfectly ever since.
>
>Until today. I took the bus for a drive this afternoon after a
>couple of months of siting. Now the right side is riding high, the
>opposite of the problem I fixed last year. I dumped and re-filled
>the air a few times, same problem.
>
>Since both valves are less than a year old, anyone have any other
>suggestions on a cause? The front valve has not been replaced, but
>it was explained to me that it controls front-to-back leveling and
>should really have no bearing on side-to-side. If this is incorrect,
>please let me know.
>
>Scott Forman
>'Tiger Pride'
>82 FC35RB
>Memphis
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