Air Step Diagram

[Gregory OConnor]

Larry, you need 100?? psi to make power avaliable to the if/then
conditions that retract a step. on my 94 there is not a foot
pressure device which Leroy describe (I just looked for it). The
step master switch in the entry is toggled down (I scribed a T for
travel down. and a P for park up) The dash step switch with the red
light is toggle depressed on the left/light side.

I wonder if the problem is with the 'low air pressure extend
circuitry???

When the bus air tanks drop to a low ?? set pressure a switch some
place inline prompts an 'extend of step' and that switch or some
other switch will not allow it to return until pressure is
reestablished. My thinking is this low pressure extend function is
designed to throw the step into the cam-over lock out while there is
still enough air volumn and pressure to cause a complete extension.
It may be that this switch (or the high side cut out) is not
reading/sending a signal of reestablished airpressure??????? if you
get hold of a BB tech maybe you could ask for the location of the
air pressure switch(s). I have a complete set of diagrams that RobR
made by combining 3 members partial sets vintage 93 94. I will find
them in my bay this weekend after I unpack palmtrees, lights,and
other useless crap for a campout at 'Temecula hot air balloon
festival'.

GregoryO'Connor
94ptRomolandCa




--- In WanderlodgeForum@yahoogroups.com, Leroy Eckert
wrote:
>
> You might call Glenn Rodgers at BB and see if he has a 94 diagram.
> No power to the retract mercury switch.? One other idea. There is
a pressure switch up under the top step on the frame of the bus (at
least on mine)that its sole purpose is to extend the step if a foot
gets caught on retraction. It is a flat clear looking thing
extending the full length of the step. As I recall, if that thing
fails the step will not retract.
>
> Leroy Eckert
> 1990 WB-40 Smoke N Mirrors
> Dahlonega, GA
> Royale Conversion
>
>
> Larry Kehler wrote: I
have been fighting my air step for a year now. All the diagrams
> posted on the forums appear to be for earlier birds and do not
match
> my wiring. My blue box does not have any diagrams that include
the air
> step.
> I have two issues now. The extending cycle works but the
retraction
> cycle does not work. The solenoid valve is not retracting when
power
> is applied. That I can fix or replace easily.
> The real problem is that no power is coming through the retraction
> circuit under any combination of switches and door condition.
>
> I can not trace the wires after they enter the front panel. The
air
> handlers are in the way.
> Any suggestions? Anyone have a current wire diagram?
>
> Larry Kehler
> 1994 PT-40 WBDA "BAM"
> St Louis
>