Rotary Valves

bill rush

New member
Mar 8, 1998
19
0
0
My 73 Canyonlands leaks down in the hold position over a week or so.
The problem is in the rotary valve. I have replaced the o-rings in the
valve but put them in dry. I remember an article many moons ago about
rebuilding the valve and using a Dow Corning product on the o-rings.

I have called Dow and they don't know what I'm talking about. Surely
someone has gone this route. The leak is irritating but not worth $100
plus per valve.

Ideas?

Bill
 
I talked to Wes Caughlan of Cinnabar and he told me that they have the info
on that. Forgot what he told me to use now!!!!! Senior lapse! Call them
at 1-800-720-2227

>My 73 Canyonlands leaks down in the hold position over a week or so.
>The problem is in the rotary valve. I have replaced the o-rings in the
>valve but put them in dry. I remember an article many moons ago about
>rebuilding the valve and using a Dow Corning product on the o-rings.
>
>I have called Dow and they don't know what I'm talking about. Surely
>someone has gone this route. The leak is irritating but not worth $100
>plus per valve.
>
>Ideas?
>
>
>Bill
>
>
>
 
Bill,
Small leaks in the power level rotory valves has always been the weak
link of the system. Actually, I think I would prefer the power level
system over eather electro level systems in that it is much simpler and
easier to trace problems if the dash valves would not leak.

I have been working with a vendor from the cape and have come up with
dash valves that do not leak. I have several on the road now the the
reports are good. I don't know many people with power level systems
that say they are happy with the dash valve performance and all have had
work on their system more than once.

If you are interested in going to an upgraded valve assy., give me a
call. (1-877-275-4462)

Jim Bounds www.gmccoop.com

>
> My 73 Canyonlands leaks down in the hold position over a week or so.
> The problem is in the rotary valve. I have replaced the o-rings in the
> valve but put them in dry. I remember an article many moons ago about
> rebuilding the valve and using a Dow Corning product on the o-rings.
>
> I have called Dow and they don't know what I'm talking about. Surely
> someone has gone this route. The leak is irritating but not worth $100
> plus per valve.
>
> Ideas?
>
> Bill
 
I thought cinnabar had already solved that problem. I talked with Wes
caughlan some weeks ago when I was working on my system and he told me that
they had a rebuild kit for the valves that resolved the leaking problem.

Jim what does your system consist of and how much does it cost?

>Bill,
>Small leaks in the power level rotory valves has always been the weak
>link of the system. Actually, I think I would prefer the power level
>system over eather electro level systems in that it is much simpler and
>easier to trace problems if the dash valves would not leak.
>
>I have been working with a vendor from the cape and have come up with
>dash valves that do not leak. I have several on the road now the the
>reports are good. I don't know many people with power level systems
>that say they are happy with the dash valve performance and all have had
>work on their system more than once.
>
>If you are interested in going to an upgraded valve assy., give me a
>call. (1-877-275-4462)
>
>
>Jim Bounds www.gmccoop.com

>>
>> My 73 Canyonlands leaks down in the hold position over a week or so.
>> The problem is in the rotary valve. I have replaced the o-rings in the
>> valve but put them in dry. I remember an article many moons ago about
>> rebuilding the valve and using a Dow Corning product on the o-rings.
>>
>> I have called Dow and they don't know what I'm talking about. Surely
>> someone has gone this route. The leak is irritating but not worth $100
>> plus per valve.
>>
>> Ideas?
>>
>> Bill
>
>
 
>
> I thought cinnabar had already solved that problem. I talked with
> Wes caughlan some weeks ago when I was working on my system and he
> told me that they had a rebuild kit for the valves that resolved the
> leaking problem.

Maybe Wes came up with something new, but the last time I talked to
Cinnabar regarding leaky rotary valves, I was told the problem was
porous castings and the only fix was to replace the old valves with an
updated valve they sell($$$). I would definitely be interested if there
were a more economical fix to this problem.

Patrick
- --
Patrick Flowers
Mailto:patri63

The GMC Motorhome Page
http://www.gmcmotorhome.com
 
Thomas,
A loss of even 5 psi makes a big difference in our air suspension. The
origional valves seem to be weak in design in that the seal is dependant
on the spring pressure on each piston. A small movement of the piston
will effect the seal and thus leak. Being soft aluminum, moisture from
the compressor even with a water seperator will damage the cylinder wall
in time. Thus, I do not like the design of that valve.

I have found a new style rotory valve assy. (spec. sheet available if
necessary) that uses a much better route and seal design which I feel is
much more reliable. Every coach I have installed this system on has
lost its sorry leak down characteristics!

I am currently working on an install sheet and kit package and will have
the kit for general sale soon. If you would like, I would be happy to
send you a set and you could be a part of the field testing.

The kit pricing is not finalised yet, but I feel it will run $175-195
for the complete kit with valves for both sides.

Because of its simplicity, I would prefer a power level system if the
dash valves were better and these are!

Jim Bounds www.gmccoop.com

>
> I thought cinnabar had already solved that problem. I talked with Wes
> caughlan some weeks ago when I was working on my system and he told me that
> they had a rebuild kit for the valves that resolved the leaking problem.
>
> Jim what does your system consist of and how much does it cost?
>

> >Bill,
> >Small leaks in the power level rotory valves has always been the weak
> >link of the system. Actually, I think I would prefer the power level
> >system over eather electro level systems in that it is much simpler and
> >easier to trace problems if the dash valves would not leak.
> >
> >I have been working with a vendor from the cape and have come up with
> >dash valves that do not leak. I have several on the road now the the
> >reports are good. I don't know many people with power level systems
> >that say they are happy with the dash valve performance and all have had
> >work on their system more than once.
> >
> >If you are interested in going to an upgraded valve assy., give me a
> >call. (1-877-275-4462)
> >
> >
> >Jim Bounds www.gmccoop.com

> >>
> >> My 73 Canyonlands leaks down in the hold position over a week or so.
> >> The problem is in the rotary valve. I have replaced the o-rings in the
> >> valve but put them in dry. I remember an article many moons ago about
> >> rebuilding the valve and using a Dow Corning product on the o-rings.
> >>
> >> I have called Dow and they don't know what I'm talking about. Surely
> >> someone has gone this route. The leak is irritating but not worth $100
> >> plus per valve.
> >>
> >> Ideas?
> >>
> >> Bill
> >
> >
 
Patrick,
As I said in my post to Thomas, I feel there are more problems with the
origional design than pourous castings. Progress marches on and I feel
a new design would improve the power level reliability greatly.

I do not know how much the replacement valves are from Cinnabar, if you
would help me field test these new valves, I'll send them to you for
$167.00 for the pair.

They are made to spec. so I have a 3-5 week lead time. If you're
interested give me a call tomorrow.

There are a few other goodies I would suggest including in the update of
your power level system as well. 1-877-275-4462

Jim Bounds www.gmccoop.com
Jim Bounds gmccoop.com

>

> >
> > I thought cinnabar had already solved that problem. I talked with
> > Wes caughlan some weeks ago when I was working on my system and he
> > told me that they had a rebuild kit for the valves that resolved the
> > leaking problem.
>
> Maybe Wes came up with something new, but the last time I talked to
> Cinnabar regarding leaky rotary valves, I was told the problem was
> porous castings and the only fix was to replace the old valves with an
> updated valve they sell($$$). I would definitely be interested if there
> were a more economical fix to this problem.
>
> Patrick
> --
> Patrick Flowers
> Mailto:patri63
>
> The GMC Motorhome Page
> http://www.gmcmotorhome.com
 
Jim I have a power level system and would like to see and test it.

>Thomas,
>A loss of even 5 psi makes a big difference in our air suspension. The
>origional valves seem to be weak in design in that the seal is dependant
>on the spring pressure on each piston. A small movement of the piston
>will effect the seal and thus leak. Being soft aluminum, moisture from
>the compressor even with a water seperator will damage the cylinder wall
>in time. Thus, I do not like the design of that valve.
>
>I have found a new style rotory valve assy. (spec. sheet available if
>necessary) that uses a much better route and seal design which I feel is
>much more reliable. Every coach I have installed this system on has
>lost its sorry leak down characteristics!
>
>I am currently working on an install sheet and kit package and will have
>the kit for general sale soon. If you would like, I would be happy to
>send you a set and you could be a part of the field testing.
>
>The kit pricing is not finalised yet, but I feel it will run $175-195
>for the complete kit with valves for both sides.
>
>Because of its simplicity, I would prefer a power level system if the
>dash valves were better and these are!
>
>
>Jim Bounds www.gmccoop.com

>>
>> I thought cinnabar had already solved that problem. I talked with Wes
>> caughlan some weeks ago when I was working on my system and he told me that
>> they had a rebuild kit for the valves that resolved the leaking problem.
>>
>> Jim what does your system consist of and how much does it cost?
>>

>> >Bill,
>> >Small leaks in the power level rotory valves has always been the weak
>> >link of the system. Actually, I think I would prefer the power level
>> >system over eather electro level systems in that it is much simpler and
>> >easier to trace problems if the dash valves would not leak.
>> >
>> >I have been working with a vendor from the cape and have come up with
>> >dash valves that do not leak. I have several on the road now the the
>> >reports are good. I don't know many people with power level systems
>> >that say they are happy with the dash valve performance and all have had
>> >work on their system more than once.
>> >
>> >If you are interested in going to an upgraded valve assy., give me a
>> >call. (1-877-275-4462)
>> >
>> >
>> >Jim Bounds www.gmccoop.com

>> >>
>> >> My 73 Canyonlands leaks down in the hold position over a week or so.
>> >> The problem is in the rotary valve. I have replaced the o-rings in the
>> >> valve but put them in dry. I remember an article many moons ago about
>> >> rebuilding the valve and using a Dow Corning product on the o-rings.
>> >>
>> >> I have called Dow and they don't know what I'm talking about. Surely
>> >> someone has gone this route. The leak is irritating but not worth $100
>> >> plus per valve.
>> >>
>> >> Ideas?
>> >>
>> >> Bill
>> >
>> >
>
>
 
Thomas,
Sorry I hadn't got back to you on this issue- have had my hands full!
I have a quantity being built now, as soon as I have them I will contact
you to see if you want to try them out. Thanks for your interest.

Jim Bounds www.gmccoop.com

>
> Jim I have a power level system and would like to see and test it.
>

> >Thomas,
> >A loss of even 5 psi makes a big difference in our air suspension. The
> >origional valves seem to be weak in design in that the seal is dependant
> >on the spring pressure on each piston. A small movement of the piston
> >will effect the seal and thus leak. Being soft aluminum, moisture from
> >the compressor even with a water seperator will damage the cylinder wall
> >in time. Thus, I do not like the design of that valve.
> >
> >I have found a new style rotory valve assy. (spec. sheet available if
> >necessary) that uses a much better route and seal design which I feel is
> >much more reliable. Every coach I have installed this system on has
> >lost its sorry leak down characteristics!
> >
> >I am currently working on an install sheet and kit package and will have
> >the kit for general sale soon. If you would like, I would be happy to
> >send you a set and you could be a part of the field testing.
> >
> >The kit pricing is not finalised yet, but I feel it will run $175-195
> >for the complete kit with valves for both sides.
> >
> >Because of its simplicity, I would prefer a power level system if the
> >dash valves were better and these are!
> >
> >
> >Jim Bounds www.gmccoop.com

> >>
> >> I thought cinnabar had already solved that problem. I talked with Wes
> >> caughlan some weeks ago when I was working on my system and he told me that
> >> they had a rebuild kit for the valves that resolved the leaking problem.
> >>
> >> Jim what does your system consist of and how much does it cost?
> >>

> >> >Bill,
> >> >Small leaks in the power level rotory valves has always been the weak
> >> >link of the system. Actually, I think I would prefer the power level
> >> >system over eather electro level systems in that it is much simpler and
> >> >easier to trace problems if the dash valves would not leak.
> >> >
> >> >I have been working with a vendor from the cape and have come up with
> >> >dash valves that do not leak. I have several on the road now the the
> >> >reports are good. I don't know many people with power level systems
> >> >that say they are happy with the dash valve performance and all have had
> >> >work on their system more than once.
> >> >
> >> >If you are interested in going to an upgraded valve assy., give me a
> >> >call. (1-877-275-4462)
> >> >
> >> >
> >> >Jim Bounds www.gmccoop.com

> >> >>
> >> >> My 73 Canyonlands leaks down in the hold position over a week or so.
> >> >> The problem is in the rotary valve. I have replaced the o-rings in the
> >> >> valve but put them in dry. I remember an article many moons ago about
> >> >> rebuilding the valve and using a Dow Corning product on the o-rings.
> >> >>
> >> >> I have called Dow and they don't know what I'm talking about. Surely
> >> >> someone has gone this route. The leak is irritating but not worth $100
> >> >> plus per valve.
> >> >>
> >> >> Ideas?
> >> >>
> >> >> Bill
> >> >
> >> >
> >
> >
 
Patrick,
I have some valves being built now, as soon as I have them I'll contact
you about trying them. Thanks for the interest.

Jim Bounds www.gmccoop.com

>

> >
> > I thought cinnabar had already solved that problem. I talked with
> > Wes caughlan some weeks ago when I was working on my system and he
> > told me that they had a rebuild kit for the valves that resolved the
> > leaking problem.
>
> Maybe Wes came up with something new, but the last time I talked to
> Cinnabar regarding leaky rotary valves, I was told the problem was
> porous castings and the only fix was to replace the old valves with an
> updated valve they sell($$$). I would definitely be interested if there
> were a more economical fix to this problem.
>
> Patrick
> --
> Patrick Flowers
> Mailto:patri63
>
> The GMC Motorhome Page
> http://www.gmcmotorhome.com
 
I too am interested in you valves
jrbiava
- -----Original Message-----
From: Jim Bounds
To: gmcmotorhome
Date: Thursday, July 09, 1998 10:45 PM
Subject: Re: GMC: Rotary Valves

>Patrick,
>I have some valves being built now, as soon as I have them I'll contact
>you about trying them. Thanks for the interest.
>
>Jim Bounds www.gmccoop.com
>

>>

>> >
>> > I thought cinnabar had already solved that problem. I talked with
>> > Wes caughlan some weeks ago when I was working on my system and he
>> > told me that they had a rebuild kit for the valves that resolved the
>> > leaking problem.
>>
>> Maybe Wes came up with something new, but the last time I talked to
>> Cinnabar regarding leaky rotary valves, I was told the problem was
>> porous castings and the only fix was to replace the old valves with an
>> updated valve they sell($$$). I would definitely be interested if there
>> were a more economical fix to this problem.
>>
>> Patrick
>> --
>> Patrick Flowers
>> Mailto:patri63
>>
>> The GMC Motorhome Page
>> http://www.gmcmotorhome.com