Air Step Diagram

[Larry Kehler]

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

[brad barton]

Larry,

This is probably no help, but is there a chance that another switch or contact is placed somewhere else in or around the door, in the crack or hinge or under the step? I have at least three contact switches in the inside corner of the door, with other valves and solenoids around the step. If you're sure you've found them all, please disregard.

BradBarton00LXiDFW bbartonwx@...

---

To: WanderlodgeForum@yahoogroups.com
From: llkehler@...
Date: Thu, 5 Jun 2008 01:58:20 +0000
Subject: [WanderlodgeForum] Air Step Diagram

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

---

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[Leroy Eckert]

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

[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
>

[krminyl@...]

I battled with my air step for a year....I know it sounds elementary, but the culprit was simply a bad ground wire at the step itself. I relocated the ground point (the nearby genset solenoid), and the step started working fine. I still can't figure why the original ground isn't grounding (??). (this was after I replaced all air step relays, removed the safety strip, and re-worked the micro switches...all of which wasn't needed).

Just a thought...

Kevin McKeown

Yorba Linda, CA

1986 38' PT (For Sale)

---

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[Larry Kehler]

Greg & Leroy
I removed the step pressure switch last year with no effect.
The tank pressure is good. The step well cover shoots out and in very
fast.
But good point Greg, while I have good pressure the sensor may be
signaling low pressure.
I will call BB and see if they have a step diagram for my 94.
Thanks

Larry Kehler
1994 PT-40 WBDA "BAM"
St Louis



--- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor"
wrote:
>
> 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.

[Leroy Eckert]

Greg, hopefully you have a diagram. No pressure switch?? That low pressure air circuit will cause that problem also. I have one of those. Mine system works fine because I jacked with it forever two years ago. I know his frustration. However, I now have a specified procedure. Pull into the park, place the extend switch to extend, flipped to the right, when I leave a park place the switch to the left toward the light.
Anyone touching buttons gets their butt kicked.

Leroy Eckert
1990 WB-40 Smoke N Mirrors
Dahlonega, GA
Royale Conversion

Gregory OConnor wrote:

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%40yahoogroups.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
>

[Wilhelmus Schreurs]

Larry:

I have redrawn a diagram for the 1990 step diagram, is there any difference from that year?

The redrawn wiring isa schematic rather than a wiring diagram.

You could use that for troubleshooting and then give us some indication what you find.

Bill 84 FC 35 SB "$quanderlodge"
Terrace, B.C. Canada

----- Original Message ----
From: Larry Kehler
To: WanderlodgeForum@yahoogroups.com
Sent: Wednesday, June 4, 2008 6:58:20 PM
Subject: [WanderlodgeForum] Air Step Diagram

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

---

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[Gregory OConnor]

I have the step diagrams along with about 30 other pages. I did find
a plastic stripunder the frame above the stepstowwell????I think that
is the device leroy talked about.

On the diagrams shouldI get themcopied electronically and post
or ???? can I just go to kinkos and have themmake a digital record???-
GregoryO'Connor
951-830-5997

-- In WanderlodgeForum@yahoogroups.com, Leroy Eckert
wrote:
>
> Greg, hopefully you have a diagram. No pressure switch?? That low
pressure air circuit will cause that problem also. I have one of
those. Mine system works fine because I jacked with it forever two
years ago. I know his frustration. However, I now have a specified
procedure. Pull into the park, place the extend switch to extend,
flipped to the right, when I leave a park place the switch to the
left toward the light.
> Anyone touching buttons gets their butt kicked.
>
> Leroy Eckert
> 1990 WB-40 Smoke N Mirrors
> Dahlonega, GA
> Royale Conversion
>
> Gregory OConnor wrote:
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
> >
>

[joepat50]

Hi Gregory,

If you want send me some copies and I'll PDF them and return a CD or
put them on my server.
I can scan up to 11x17 both sides...

/Joe
'87 PT40
San Francisco



--- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor"
wrote:
>
> I have the step diagrams along with about 30 other pages. I did find
> a plastic stripunder the frame above the stepstowwell????I think that
> is the device leroy talked about.
>
> On the diagrams shouldI get themcopied electronically and post
> or ???? can I just go to kinkos and have themmake a digital record???-
> GregoryO'Connor
> 951-830-5997
>