Air leaking from front when brakes applied

[ppotter14950]

Hi there

Today while finishing up Air Force One supplemental braking install for towed
vehicle, had engine off and when applied brakes to test Air Force One and while
pedal was depressed there was a constant air leak up front around the left front
area, but could not find it. Any suggestions on where it might be, will work on
taking front driver side panel open and looking in there, but it is so tight in
there and i dont know what i am looking for so any suggestions would be
appreciated.

Thanks

Paul & Debbie Potter
87PT40 - Hotel California II
Hesperia CA

[Don Bradner]

Are you able to see the line that comes from the frame to the brakes? I ask
because I've had it cut into after the upper shock mount tore free, and the only
easy way to see without taking off the wheel was with a small camera, reaching
in above the tire and taking pictures.

On 10/26/2009 at 2:38 AM ppotter14950 wrote:

>Hi there
>
>Today while finishing up Air Force One supplemental braking install for
>towed vehicle, had engine off and when applied brakes to test Air Force
>One and while pedal was depressed there was a constant air leak up front
>around the left front area, but could not find it. Any suggestions on
>where it might be, will work on taking front driver side panel open and
>looking in there, but it is so tight in there and i dont know what i am
>looking for so any suggestions would be appreciated.
>
>Thanks
>
>Paul & Debbie Potter
>87PT40 - Hotel California II
>Hesperia CA
>
>
>
>------------------------------------
>
>Yahoo! Groups Links
>
>
>

[P & D]

I did not see it, but that is a great idea, I will try that.

Thanks

Paul

From: WanderlodgeForum@yahoogroups.com
[mailto:WanderlodgeForum@yahoogroups.com] On Behalf Of Don Bradner

Sent: Sunday, October 25, 2009 8:02 PM

To: WanderlodgeForum@yahoogroups.com

Subject: Re: [WanderlodgeForum] Air leaking from front when brakes
applied

Are you able to see the line that comes from
the frame to the brakes? I ask because I've had it cut into after the upper
shock mount tore free, and the only easy way to see without taking off the
wheel was with a small camera, reaching in above the tire and taking pictures.



On 10/26/2009 at 2:38 AM ppotter14950 wrote:



>Hi there

>

>Today while finishing up Air Force One supplemental braking install for

>towed vehicle, had engine off and when applied brakes to test Air Force

>One and while pedal was depressed there was a constant air leak up front

>around the left front area, but could not find it. Any suggestions on

>where it might be, will work on taking front driver side panel open and

>looking in there, but it is so tight in there and i dont know what i am

>looking for so any suggestions would be appreciated.

>

>Thanks

>

>Paul & Debbie Potter

>87PT40 - Hotel California II

>Hesperia CA

>

>

>

>------------------------------------

>

>Yahoo! Groups Links

>

>

>

[gregory O]

easier to find leaks with wet or soapy wet fingers.

careful poking around under the front end, tugging on air lines unless you have
the front end blocked up. also remember the front steps are air
retracted/extended and propmted to extend automatically when the air is depleted
to ?a set psi.

When I crawl under my bus, I look to drop a block or something under a solid
frame support as a landing spot for the falling truck, I usually don't block it
up, but always find a larger than me obstacle for it to fall on. Working on the
steps I put a block of wood in the mechanics (between the pivots) while it was
extended.

Greg
94ptca


--- In WanderlodgeForum@yahoogroups.com, "ppotter14950" wrote:
>
> Hi there
>
> Today while finishing up Air Force One supplemental braking install for towed
vehicle, had engine off and when applied brakes to test Air Force One and while
pedal was depressed there was a constant air leak up front around the left front
area, but could not find it. Any suggestions on where it might be, will work on
taking front driver side panel open and looking in there, but it is so tight in
there and i dont know what i am looking for so any suggestions would be
appreciated.
>
> Thanks
>
> Paul & Debbie Potter
> 87PT40 - Hotel California II
> Hesperia CA
>

[Ernie Ekberg]

Hi Paul, can't help you from here, but after I finish up Craig Elliotts here in Norco, I'll stop by on my way back to Needles the end of this week, if thats ok Ernie- with coach and girls, Norco, Ca Ernie Ekberg 83PT40 Wanderlodge Weatherford, Tx 817-475-3991 http://autos.groups.yahoo.com/group/erni...gandrepair --- On Sun, 10/25/09, ppotter14950 wrote: From: ppotter14950 Subject: [WanderlodgeForum] Air leaking from front when brakes applied To: WanderlodgeForum@yahoogroups.com Date: Sunday, October 25, 2009, 9:38 PM Hi there Today while finishing up Air Force One supplemental braking install for towed vehicle, had engine off and when applied brakes to test Air Force One and while pedal was depressed there was a constant air leak up front around the left front area, but could not find it. Any suggestions on where it might be, will work on taking front driver side panel open and looking in there, but it is so tight in there and i dont know what i am looking for so any suggestions would be appreciated. Thanks Paul & Debbie Potter 87PT40 - Hotel California II Hesperia CA

[Wayne Kotila]

Did you check the rubber hoses to the front brakes? When you step on the brake pedal air pressureapplies your front brakes so you will have air pressure in the supply hoses tountil you take your foot off the brake pedal. Sometimes from age those hoses will start leaking where the end is crimped on the hose and if you need to replace them, a farm supply store will carry high pressure hydraulic hose in differentdiameters and lengths and have different end adapters to convert the end connector to what you need. You should be able to get a new hose and adapters if needed for under $20.00.

Wayne

1996 WB42

---

From: ppotter14950
To: WanderlodgeForum@yahoogroups.com
Sent: Sun, October 25, 2009 9:38:25 PM
Subject: [WanderlodgeForum] Air leaking from front when brakes applied

Hi there

Today while finishing up Air Force One supplemental braking install for towed vehicle, had engine off and when applied brakes to test Air Force One and while pedal was depressed there was a constant air leak up front around the left front area, but could not find it. Any suggestions on where it might be, will work on taking front driver side panel open and looking in there, but it is so tight in there and i dont know what i am looking for so any suggestions would be appreciated.

Thanks

Paul & Debbie Potter
87PT40 - Hotel California II
Hesperia CA

__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com

[P & D]

Thanks you all for the assistance.  Got some help today and we
climbed under coach and found a ¼ air line on the driver side front right
behind the fog lights that when you step on the brakes air comes out of that
line and as soon as let off it stops.  After looking at drawings and trying to
figure out where the other end should be connected, by accident we discovered
that if you plug the hose, the coach emergency brake released.  (Good thing we
are on a level lot) and if you un plug it, the emergency brakes stay locked. 
Then we tried it with the emergency brake released and no air came out, so I think
it is releasing the air bypassing the emergency brake so as to not release the
emergency brake.

Hope all that made sense, but it appears that is normal
operation, although I never recall hearing that noise before when I stepped on
the brake.

Thanks again for all the help

Paul & Debbie Potter

Hesperia CA

1987 PT 38

Hotel California II

From:
WanderlodgeForum@yahoogroups.com [mailto:WanderlodgeForum@yahoogroups.com] On
Behalf Of Wayne Kotila

Sent: Monday, October 26, 2009 1:56 PM

To: WanderlodgeForum@yahoogroups.com

Subject: Re: [WanderlodgeForum] Air leaking from front when brakes
applied

Did
you check the rubber hoses to the front brakes? When you step on the brake
pedal air pressureapplies your front brakes so you will have air pressure
in the supply hoses tountil you take your foot off the brake pedal.
Sometimes from age those hoses will start leaking where the end is crimped on
the hose and if you need to replace them, a farm supply store will carry high
pressure hydraulic hose in differentdiameters and lengths and have
different end adapters to convert the end connector to what you need. You
should be able to get a new hose and adapters if needed for under $20.00.

Wayne

1996
WB42

---

From: ppotter14950


To: WanderlodgeForum@yahoogroups.com

Sent: Sun, October 25, 2009 9:38:25 PM

Subject: [WanderlodgeForum] Air leaking from front when brakes applied

Hi there



Today while finishing up Air Force One supplemental braking install for towed
vehicle, had engine off and when applied brakes to test Air Force One and while
pedal was depressed there was a constant air leak up front around the left
front area, but could not find it. Any suggestions on where it might be, will
work on taking front driver side panel open and looking in there, but it is so
tight in there and i dont know what i am looking for so any suggestions would
be appreciated.



Thanks



Paul & Debbie Potter

87PT40 - Hotel California II

Hesperia CA

__________________________________________________

Do You Yahoo!?

Tired of spam? Yahoo! Mail has the best spam protection around

http://mail.yahoo.com

[Curt Sprenger]

Paul,

What you found and determined does not seem right. Post pictures if you can. I looked under our coach this afternoon. I see a 1/8" plastic air line to the cylinder that rotates down the driving light. Above that area on the bottom of the frame rail there are some copper and plastic air lines. None are open as you describe.  


Curt Sprenger
1987 PT38 8V92 "MacAttack Racing"
Anaheim Hills, CA

On Sat, Oct 31, 2009 at 2:35 PM, P & D <"audvid1@gte.net"> wrote:

 

Thanks you all for the assistance.  Got some help today and we
climbed under coach and found a ¼ air line on the driver side front right
behind the fog lights that when you step on the brakes air comes out of that
line and as soon as let off it stops.  After looking at drawings and trying to
figure out where the other end should be connected, by accident we discovered
that if you plug the hose, the coach emergency brake released.  (Good thing we
are on a level lot) and if you un plug it, the emergency brakes stay locked. 
Then we tried it with the emergency brake released and no air came out, so I think
it is releasing the air bypassing the emergency brake so as to not release the
emergency brake.

 

Hope all that made sense, but it appears that is normal
operation, although I never recall hearing that noise before when I stepped on
the brake.

 

Thanks again for all the help

 

Paul & Debbie Potter

Hesperia CA

1987 PT 38

Hotel California II

 

From:
"WanderlodgeForum@yahoogroups.com" [mailto:"WanderlodgeForum@yahoogroups.com"] On
Behalf Of Wayne Kotila

Sent: Monday, October 26, 2009 1:56 PM

To: "WanderlodgeForum@yahoogroups.com"

Subject: Re: [WanderlodgeForum] Air leaking from front when brakes
applied

 

 

Did
you check the rubber hoses to the front brakes? When you step on the brake
pedal air pressure applies your front brakes so you will have air pressure
in the supply hoses to until you take your foot off the brake pedal.
Sometimes from age those hoses will start leaking where the end is crimped on
the hose and if you need to replace them, a farm supply store will carry high
pressure hydraulic hose in different diameters and lengths and have
different end adapters to convert the end connector to what you need. You
should be able to get a new hose and adapters if needed for under $20.00.

Wayne

1996
WB42

 

---

From: ppotter14950
<"audvid1@gte.net">

To: "WanderlodgeForum@yahoogroups.com"

Sent: Sun, October 25, 2009 9:38:25 PM

Subject: [WanderlodgeForum] Air leaking from front when brakes applied



 

Hi there



Today while finishing up Air Force One supplemental braking install for towed
vehicle, had engine off and when applied brakes to test Air Force One and while
pedal was depressed there was a constant air leak up front around the left
front area, but could not find it. Any suggestions on where it might be, will
work on taking front driver side panel open and looking in there, but it is so
tight in there and i dont know what i am looking for so any suggestions would
be appreciated.



Thanks



Paul & Debbie Potter

87PT40 - Hotel California II

Hesperia CA

__________________________________________________

Do You Yahoo!?

Tired of spam? Yahoo! Mail has the best spam protection around

http://mail.yahoo.com

[gregory O]

it is the anti compouning valve blowing air ?? when the spring brake is left pushing (park brake on) and someone pushes on the service brakes, the valve proportions the pressure working the cams on the axle that hold the spring brakes so there is not too much pressure on the shoes. if the valve is crapped out you get broken shoes with no sign of heat that made the cracks .


to keep from giving a lecture then getting a lecture from the mods, check out page 27 of Bendix handbook


http://www.wsafc.org/WSFMA/Shared%20Docu...ndbook.pdf

here is a good video of the principles of AB without much of the new safety crap confusing the process it is from 1967

http://www.youtube.com/watch?v=qJa5-_ExsBE

Greg
94ptca


--- In WanderlodgeForum@yahoogroups.com, Curt Sprenger wrote:
>
> Paul,
>
> What you found and determined does not seem right. Post pictures if you can.
> I looked under our coach this afternoon. I see a 1/8" plastic air line to
> the cylinder that rotates down the driving light. Above that area on the
> bottom of the frame rail there are some copper and plastic air lines. None
> are open as you describe.
>
> Curt Sprenger
> 1987 PT38 8V92 "MacAttack Racing"
> Anaheim Hills, CA
>
>
>
> On Sat, Oct 31, 2009 at 2:35 PM, P & D audvid1@... wrote:
>
> >
> >
> > Thanks you all for the assistance. Got some help today and we climbed
> > under coach and found a ¼ air line on the driver side front right behind the
> > fog lights that when you step on the brakes air comes out of that line and
> > as soon as let off it stops. After looking at drawings and trying to figure
> > out where the other end should be connected, by accident we discovered that
> > if you plug the hose, the coach emergency brake released. (Good thing we
> > are on a level lot) and if you un plug it, the emergency brakes stay
> > locked. Then we tried it with the emergency brake released and no air came
> > out, so I think it is releasing the air bypassing the emergency brake so as
> > to not release the emergency brake.
> >
> >
> >
> > Hope all that made sense, but it appears that is normal operation, although
> > I never recall hearing that noise before when I stepped on the brake.
> >
> >
> >
> > Thanks again for all the help
> >
> >
> >
> > Paul & Debbie Potter
> >
> > Hesperia CA
> >
> > 1987 PT 38
> >
> > Hotel California II
> >
> >
> >
> > *From:* WanderlodgeForum@yahoogroups.com [mailto:
> > WanderlodgeForum@yahoogroups.com] *On Behalf Of *Wayne Kotila
> > *Sent:* Monday, October 26, 2009 1:56 PM
> > *To:* WanderlodgeForum@yahoogroups.com
> > *Subject:* Re: [WanderlodgeForum] Air leaking from front when brakes
> > applied
> >
> >
> >
> >
> >
> > Did you check the rubber hoses to the front brakes? When you step on the
> > brake pedal air pressure applies your front brakes so you will have air
> > pressure in the supply hoses to until you take your foot off the brake
> > pedal. Sometimes from age those hoses will start leaking where the end is
> > crimped on the hose and if you need to replace them, a farm supply store
> > will carry high pressure hydraulic hose in different diameters and lengths
> > and have different end adapters to convert the end connector to what you
> > need. You should be able to get a new hose and adapters if needed for under
> > $20.00.
> >
> > Wayne
> >
> > 1996 WB42
> >
> >
> > ------------------------------
> >
> > *From:* ppotter14950 audvid1@...
> > *To:* WanderlodgeForum@yahoogroups.com
> > *Sent:* Sun, October 25, 2009 9:38:25 PM
> > *Subject:* [WanderlodgeForum] Air leaking from front when brakes applied
> >
> >
> >
> > Hi there
> >
> > Today while finishing up Air Force One supplemental braking install for
> > towed vehicle, had engine off and when applied brakes to test Air Force One
> > and while pedal was depressed there was a constant air leak up front around
> > the left front area, but could not find it. Any suggestions on where it
> > might be, will work on taking front driver side panel open and looking in
> > there, but it is so tight in there and i dont know what i am looking for so
> > any suggestions would be appreciated.
> >
> > Thanks
> >
> > Paul & Debbie Potter
> > 87PT40 - Hotel California II
> > Hesperia CA
> >
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Tired of spam? Yahoo! Mail has the best spam protection around
> > http://mail.yahoo.com
> >
> >
> >
>

[Curt Sprenger]

Greg,
Good information for sure, thanks! Do you know the BlueBird name for that compounding valve?

Curt Sprenger
1987 PT38 8V92 "MacAttack Racing"
Anaheim Hills, CA

On Sun, Nov 1, 2009 at 7:21 PM, gregory O <"greg@rainbowrv.com"> wrote:

 

it is the anti compouning valve blowing air ??  when the spring brake is left pushing (park brake on) and someone pushes on the service brakes, the valve proportions the  pressure working the cams on the axle that hold the spring brakes so there is not too much pressure on the shoes. if the valve is crapped out you get broken shoes with no sign of heat that made the cracks .



to keep from giving a lecture  then getting a lecture from the mods,  check out page 27  of  Bendix handbook 



http://www.wsafc.org/WSFMA/Shared%20Docu...ndbook.pdf

here is a good video of the principles  of AB  without much of the new safety crap confusing the process it is from 1967


http://www.youtube.com/watch?v=qJa5-_ExsBE

Greg
94ptca

--- In "WanderlodgeForum@yahoogroups.com", Curt Sprenger wrote:

>
> Paul,
>
> What you found and determined does not seem right. Post pictures if you can.
> I looked under our coach this afternoon. I see a 1/8" plastic air line to
> the cylinder that rotates down the driving light. Above that area on the

> bottom of the frame rail there are some copper and plastic air lines. None
> are open as you describe.
>
> Curt Sprenger
> 1987 PT38 8V92 "MacAttack Racing"
> Anaheim Hills, CA

>
>
>

> On Sat, Oct 31, 2009 at 2:35 PM, P & D audvid1@... wrote:
>
> >
> >
> > Thanks you all for the assistance. Got some help today and we climbed

> > under coach and found a ¼ air line on the driver side front right behind the

> > fog lights that when you step on the brakes air comes out of that line and
> > as soon as let off it stops. After looking at drawings and trying to figure

> > out where the other end should be connected, by accident we discovered that
> > if you plug the hose, the coach emergency brake released. (Good thing we
> > are on a level lot) and if you un plug it, the emergency brakes stay

> > locked. Then we tried it with the emergency brake released and no air came
> > out, so I think it is releasing the air bypassing the emergency brake so as
> > to not release the emergency brake.

> >
> >
> >
> > Hope all that made sense, but it appears that is normal operation, although
> > I never recall hearing that noise before when I stepped on the brake.
> >

> >
> >
> > Thanks again for all the help
> >
> >
> >
> > Paul & Debbie Potter
> >
> > Hesperia CA
> >
> > 1987 PT 38

> >
> > Hotel California II
> >
> >
> >
> > *From:* "WanderlodgeForum@yahoogroups.com" [mailto:
> > "WanderlodgeForum@yahoogroups.com"] *On Behalf Of *Wayne Kotila

> > *Sent:* Monday, October 26, 2009 1:56 PM
> > *To:* "WanderlodgeForum@yahoogroups.com"
> > *Subject:* Re: [WanderlodgeForum] Air leaking from front when brakes

> > applied
> >
> >
> >
> >
> >
> > Did you check the rubber hoses to the front brakes? When you step on the
> > brake pedal air pressure applies your front brakes so you will have air

> > pressure in the supply hoses to until you take your foot off the brake
> > pedal. Sometimes from age those hoses will start leaking where the end is
> > crimped on the hose and if you need to replace them, a farm supply store

> > will carry high pressure hydraulic hose in different diameters and lengths
> > and have different end adapters to convert the end connector to what you
> > need. You should be able to get a new hose and adapters if needed for under

> > $20.00.
> >
> > Wayne
> >
> > 1996 WB42
> >
> >
> > ------------------------------
> >

> > *From:* ppotter14950 audvid1@...

> > *To:* "WanderlodgeForum@yahoogroups.com"

> > *Sent:* Sun, October 25, 2009 9:38:25 PM
> > *Subject:* [WanderlodgeForum] Air leaking from front when brakes applied

> >
> >
> >
> > Hi there
> >
> > Today while finishing up Air Force One supplemental braking install for
> > towed vehicle, had engine off and when applied brakes to test Air Force One

> > and while pedal was depressed there was a constant air leak up front around
> > the left front area, but could not find it. Any suggestions on where it
> > might be, will work on taking front driver side panel open and looking in

> > there, but it is so tight in there and i dont know what i am looking for so
> > any suggestions would be appreciated.
> >
> > Thanks
> >
> > Paul & Debbie Potter

> > 87PT40 - Hotel California II
> > Hesperia CA
> >
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Tired of spam? Yahoo! Mail has the best spam protection around

> > http://mail.yahoo.com
> >
> >
> >
>