Home » Public Forums » GMCnet » Modify electrolevel 2 pumps (Retrofit VIAIRs?)
| Modify electrolevel 2 pumps [message #325798] |
Mon, 06 November 2017 19:02  |
Will Albers
Messages: 183
Registered: November 2017
Location: Detroit MI (Belleville)
Karma: 2
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Senior Member |
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Im the new owner of a 78 coach that has a few wrinkles to work out. 
First up is the leveling system. I believe a pump is shot. It wont create pressure even though the piston is moving freely and the bore looks great. I swapped the heads and no change.
Finding a used one is pricey, and questionable to the length of time it will last. I'm curious if i can retrofit Viairs into it.
A couple of questions:
1) What is the function of the exhaust solenoid on the head of the pump? One harness reads 1 volt while pumping, and 12 when releasing air. The other reads 8v continuously, so there appears to be an issue there. Are these run off of the auto levelers?
2) The two center valves appear to really take care of the pressure release, so if those valves release pressure, why the exhaust valve on the compressor?
1978 Palm Beach.
Detroit Michigan
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| Re: Modify electrolevel 2 pumps [message #325799 is a reply to message #325798] |
Mon, 06 November 2017 20:00  |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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Will,
It was good to meet you, and things went by so fast that I forgot to welcome you to the group, family, cult, asylum.....
We got you home, and now things can get real interesting. Oh, and Fun - by the way.
By getting here, you have just collected a great big bunch of brand new old friends. You may think that my helpfulness is an outlier, but in this group, it is the norm. The only other community that I know of that is like this it the watermen of my world. Be aware that most of the people here have an agenda. That agenda is to see that you and the family get to enjoy your coach as much as we all do enjoy ours .
Something you need to do soon, build a sigfile. Go to <Control Panel> / <Account Settings> and scroll down. You will find the place to fill it in. We do like a real name, so that is covered, but you need to do a short bit about the coach, because there are differences that matter, like not all 78s have EL2 and important mods should be mentioned. Now, location is important, because so may choose to help (like the guy you met yesterday) and it helps to know if you are in striking range. The half of the group that gets this as E-mail does not get to see the header where yours says "Belleville".
Now, there is something else that I missed yesterday. As this community is so much like that of the watermen, I have taken to welcoming new owners here much as a new vessel or owner is welcomed there. So,
May the Good Lord bless this coach and all those that set forth within her.
Welcome Will
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Modify electrolevel 2 pumps [message #325807 is a reply to message #325800] |
Tue, 07 November 2017 04:45 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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On Mon, Nov 6, 2017 at 7:02 PM Charles Boyd
wrote:
> There is a good write up in the 77-78 supplement manual.
>
And read here
http://www.gmcws.org/Tech/dsimmons/air_suspension/air-suspension-system.html
>
>
> Will Albers wrote on Mon, 06 November 2017 20:02
>> Im the new owner of a 78 coach that has a few wrinkles to work out. :(
>>
>> First up is the leveling system. I believe a pump is shot. It wont
> create pressure even though the piston is moving freely and the bore looks
>> great. I swapped the heads and no change.
>>
>> Finding a used one is pricey, and questionable to the length of time it
> will last. I'm curious if i can retrofit Viairs into it.
>>
>> A couple of questions:
>>
>> 1) What is the function of the exhaust solenoid on the head of the pump?
> One harness reads 1 volt while pumping, and 12 when releasing air. The
>> other reads 8v continuously, so there appears to be an issue there. Are
> these run off of the auto levelers?
>> 2) The two center valves appear to really take care of the pressure
> release, so if those valves release pressure, why the exhaust valve on the
>> compressor?
>
>
> --
> C. Boyd
> 76 Crestmont
> East Tennessee
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: Modify electrolevel 2 pumps [message #325817 is a reply to message #325798] |
Tue, 07 November 2017 09:40 |
JohnS
Messages: 126
Registered: December 2014
Location: Vacaville, CA
Karma: -2
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Senior Member |
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The valves on the compressors are the LOWER valves and are controlled by the sensors in the wheel wells. It is possible to replace the compressors with another type, but you will have to obtain and plumb in separate exhaust valves. Also the air dryer is incorporated in the compressor assemblies, so a filter/dryer should be provided.
John Shutzbaugh, Vacaville, CA, ncserv@aol.com;
78 Buskirk stretch, "What were we thinking?"
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| Re: [GMCnet] Modify electrolevel 2 pumps [message #325819 is a reply to message #325817] |
Tue, 07 November 2017 10:07 |
Will Albers
Messages: 183
Registered: November 2017
Location: Detroit MI (Belleville)
Karma: 2
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Senior Member |
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Thank you John. Are the level sensors variable voltage, or a simple 12v
switch? as one side is a constant 8v regardless of the inflate/deflate
switch position. The other is 1v on raise, and 12v on deflate,
I'm thinking of a single larger VIAIR with a tank as i have one from my 4x4
days.
On Tue, Nov 7, 2017 at 10:40 AM, John Shutzbaugh
wrote:
> The valves on the compressors are the LOWER valves and are controlled by
> the sensors in the wheel wells. It is possible to replace the compressors
> with another type, but you will have to obtain and plumb in separate
> exhaust valves. Also the air dryer is incorporated in the compressor
> assemblies,
> so a filter/dryer should be provided.
> --
> John Shutzbaugh, Vacaville, CA, ncserv@aol.com;
> 77 Eleganza, bought it new, can't blame PO, and
> 78 Buskirk stretch, "What were we thinking?"
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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1978 Palm Beach.
Detroit Michigan
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| Re: [GMCnet] Modify electrolevel 2 pumps [message #325821 is a reply to message #325819] |
Tue, 07 November 2017 10:12 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Comsider this
http://www.gmcmhphotos.com/photos/flor-gmc-27s-in-florence-2c-or/p40827-wireless-air-block-diagram-by-gmces-bryon.html
On Tue, Nov 7, 2017 at 8:08 AM Will wrote:
> Thank you John. Are the level sensors variable voltage, or a simple 12v
> switch? as one side is a constant 8v regardless of the inflate/deflate
> switch position. The other is 1v on raise, and 12v on deflate,
>
> I'm thinking of a single larger VIAIR with a tank as i have one from my 4x4
> days.
>
> On Tue, Nov 7, 2017 at 10:40 AM, John Shutzbaugh
> wrote:
>
>> The valves on the compressors are the LOWER valves and are controlled by
>> the sensors in the wheel wells. It is possible to replace the
> compressors
>> with another type, but you will have to obtain and plumb in separate
>> exhaust valves. Also the air dryer is incorporated in the compressor
>> assemblies,
>> so a filter/dryer should be provided.
>> --
>> John Shutzbaugh, Vacaville, CA, ncserv@aol.com;
>> 77 Eleganza, bought it new, can't blame PO, and
>> 78 Buskirk stretch, "What were we thinking?"
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
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| Re: [GMCnet] Modify electrolevel 2 pumps [message #325827 is a reply to message #325821] |
Tue, 07 November 2017 14:01 |
Will Albers
Messages: 183
Registered: November 2017
Location: Detroit MI (Belleville)
Karma: 2
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Senior Member |
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LOVE IT, but the company says that it will not work with a tank, yet GMC
owners are using a tank =) Its awesome for $400 though!
On Tue, Nov 7, 2017 at 11:12 AM, gene Fisher wrote:
> Comsider this
> http://www.gmcmhphotos.com/photos/flor-gmc-27s-in-florence-2c-or/p40827-
> wireless-air-block-diagram-by-gmces-bryon.html
>
>
>
> On Tue, Nov 7, 2017 at 8:08 AM Will wrote:
>
>> Thank you John. Are the level sensors variable voltage, or a simple 12v
>> switch? as one side is a constant 8v regardless of the inflate/deflate
>> switch position. The other is 1v on raise, and 12v on deflate,
>>
>> I'm thinking of a single larger VIAIR with a tank as i have one from my
> 4x4
>> days.
>>
>> On Tue, Nov 7, 2017 at 10:40 AM, John Shutzbaugh
>> wrote:
>>
>>> The valves on the compressors are the LOWER valves and are controlled
> by
>>> the sensors in the wheel wells. It is possible to replace the
>> compressors
>>> with another type, but you will have to obtain and plumb in separate
>>> exhaust valves. Also the air dryer is incorporated in the compressor
>>> assemblies,
>>> so a filter/dryer should be provided.
>>> --
>>> John Shutzbaugh, Vacaville, CA, ncserv@aol.com;
>>> 77 Eleganza, bought it new, can't blame PO, and
>>> 78 Buskirk stretch, "What were we thinking?"
>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> “Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://gmcmotorhome.info/
> Alternator Protection Cable
> http://gmcmotorhome.info/APC.html
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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1978 Palm Beach.
Detroit Michigan
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| Re: [GMCnet] Modify electrolevel 2 pumps [message #325829 is a reply to message #325827] |
Tue, 07 November 2017 16:21 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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On Tue, Nov 7, 2017 at 12:02 PM Will wrote:
> LOVE IT, but the company says that it will not work with a tank, yet GMC
> owners are using a tank =) Its awesome for $400 though!
>
I am not using tank on my 3 coaches and built my own with 2 pumps. Each
valve you replace will cost you more
> On Tue, Nov 7, 2017 at 11:12 AM, gene Fisher
> wrote:
>
>> Comsider this
>> http://www.gmcmhphotos.com/photos/flor-gmc-27s-in-florence-2c-or/p40827-
>> wireless-air-block-diagram-by-gmces-bryon.html
>>
>>
>>
>> On Tue, Nov 7, 2017 at 8:08 AM Will wrote:
>>
>>> Thank you John. Are the level sensors variable voltage, or a simple 12v
>>> switch? as one side is a constant 8v regardless of the inflate/deflate
>>> switch position. The other is 1v on raise, and 12v on deflate,
>>>
>>> I'm thinking of a single larger VIAIR with a tank as i have one from my
>> 4x4
>>> days.
>>>
>>> On Tue, Nov 7, 2017 at 10:40 AM, John Shutzbaugh
>>> wrote:
>>>
>>>> The valves on the compressors are the LOWER valves and are controlled
>> by
>>>> the sensors in the wheel wells. It is possible to replace the
>>> compressors
>>>> with another type, but you will have to obtain and plumb in separate
>>>> exhaust valves. Also the air dryer is incorporated in the compressor
>>>> assemblies,
>>>> so a filter/dryer should be provided.
>>>> --
>>>> John Shutzbaugh, Vacaville, CA, ncserv@aol.com;
>>>> 77 Eleganza, bought it new, can't blame PO, and
>>>> 78 Buskirk stretch, "What were we thinking?"
>>>>
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>> --
>> Gene Fisher -- 74-23,77PB/ore/ca
>> “Give a man a fish; you have fed him for today --- give him a URL and
>> -------
>> http://gmcmotorhome.info/
>> Alternator Protection Cable
>> http://gmcmotorhome.info/APC.html
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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| Re: [GMCnet] Modify electrolevel 2 pumps [message #325831 is a reply to message #325829] |
Tue, 07 November 2017 16:43 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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If you have a late 77 or 78, you should have the EL ll. It has two
compressors, with desiccant dryers, mounted on a metal frame along with
relays and solenoid valves. All connected up with plug in wire harnesses.
Ride height is controlled by a '70's version of electronic ride height
controls. Consists of mechanical linkages connected to shutter wheels with
gaps in the wheel that covers up or uncovers light emitting diodes focused
on photo transistors. When the gap in the shutter wheel allows the light to
shine through, the transistor either opens or closes a 12 volt current that
goes to one of the relays. The relay in turn turns on the compressor and
accompanying solenoid to allow air to be pumped into the correct air bag.
This raises the coach, moves the shutter wheel, and opens the circuit to
the relay, shutting off the compressor. Works opposite to that when
lowering. Another relay and solenoid is actuated, air is bled out of the
bag to lower, that moves the shutter wheel, blocking the light, and opens
the relay. Clear as mud, right.
When some ham fisted, well intentioned, technician has not been in there
mucking about, and the 40 year old electronic circuit boards are working
correctly, the system works really well. Only two air hoses, one left, and
one right. Way fewer leak points.
Jim Hupy
Salem, Or.
On Nov 7, 2017 2:22 PM, "gene Fisher" wrote:
> On Tue, Nov 7, 2017 at 12:02 PM Will wrote:
>
>> LOVE IT, but the company says that it will not work with a tank, yet GMC
>> owners are using a tank =) Its awesome for $400 though!
>>
> I am not using tank on my 3 coaches and built my own with 2 pumps. Each
> valve you replace will cost you more
>
>
>> On Tue, Nov 7, 2017 at 11:12 AM, gene Fisher
>> wrote:
>>
>>> Comsider this
>>> http://www.gmcmhphotos.com/photos/flor-gmc-27s-in-
> florence-2c-or/p40827-
>>> wireless-air-block-diagram-by-gmces-bryon.html
>>>
>>>
>>>
>>> On Tue, Nov 7, 2017 at 8:08 AM Will wrote:
>>>
>>>> Thank you John. Are the level sensors variable voltage, or a simple
> 12v
>>>> switch? as one side is a constant 8v regardless of the
> inflate/deflate
>>>> switch position. The other is 1v on raise, and 12v on deflate,
>>>>
>>>> I'm thinking of a single larger VIAIR with a tank as i have one from
> my
>>> 4x4
>>>> days.
>>>>
>>>> On Tue, Nov 7, 2017 at 10:40 AM, John Shutzbaugh ncserv111@gmail.com>
>>>> wrote:
>>>>
>>>> > The valves on the compressors are the LOWER valves and are
> controlled
>>> by
>>>> > the sensors in the wheel wells. It is possible to replace the
>>>> compressors
>>>> > with another type, but you will have to obtain and plumb in
> separate
>>>> > exhaust valves. Also the air dryer is incorporated in the
> compressor
>>>> > assemblies,
>>>> > so a filter/dryer should be provided.
>>>> > --
>>>> > John Shutzbaugh, Vacaville, CA, ncserv@aol.com;
>>>> > 77 Eleganza, bought it new, can't blame PO, and
>>>> > 78 Buskirk stretch, "What were we thinking?"
>>>> >
>>>> > _______________________________________________
>>>> > GMCnet mailing list
>>>> > Unsubscribe or Change List Options:
>>>> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>> >
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>> --
>>> Gene Fisher -- 74-23,77PB/ore/ca
>>> “Give a man a fish; you have fed him for today --- give him a URL and
>>> -------
>>> http://gmcmotorhome.info/
>>> Alternator Protection Cable
>>> http://gmcmotorhome.info/APC.html
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> “Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://gmcmotorhome.info/
> Alternator Protection Cable
> http://gmcmotorhome.info/APC.html
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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| Re: [GMCnet] Modify electrolevel 2 pumps [message #325832 is a reply to message #325829] |
Tue, 07 November 2017 17:15 |
Will Albers
Messages: 183
Registered: November 2017
Location: Detroit MI (Belleville)
Karma: 2
|
Senior Member |
|
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Gene, can you provide more detail on how you built yours? I have a concept
of a large pump and tank, utilizing solenoids with the stock control
system. I also purchased the wireless system as a totally separate
scenario. I'm not quite sure which I want to use yet. I'm leaning towards
the first
On Nov 7, 2017 5:22 PM, "gene Fisher" wrote:
> On Tue, Nov 7, 2017 at 12:02 PM Will wrote:
>
>> LOVE IT, but the company says that it will not work with a tank, yet GMC
>> owners are using a tank =) Its awesome for $400 though!
>>
> I am not using tank on my 3 coaches and built my own with 2 pumps. Each
> valve you replace will cost you more
>
>
>> On Tue, Nov 7, 2017 at 11:12 AM, gene Fisher
>> wrote:
>>
>>> Comsider this
>>> http://www.gmcmhphotos.com/photos/flor-gmc-27s-in-
> florence-2c-or/p40827-
>>> wireless-air-block-diagram-by-gmces-bryon.html
>>>
>>>
>>>
>>> On Tue, Nov 7, 2017 at 8:08 AM Will wrote:
>>>
>>>> Thank you John. Are the level sensors variable voltage, or a simple
> 12v
>>>> switch? as one side is a constant 8v regardless of the
> inflate/deflate
>>>> switch position. The other is 1v on raise, and 12v on deflate,
>>>>
>>>> I'm thinking of a single larger VIAIR with a tank as i have one from
> my
>>> 4x4
>>>> days.
>>>>
>>>> On Tue, Nov 7, 2017 at 10:40 AM, John Shutzbaugh ncserv111@gmail.com>
>>>> wrote:
>>>>
>>>> > The valves on the compressors are the LOWER valves and are
> controlled
>>> by
>>>> > the sensors in the wheel wells. It is possible to replace the
>>>> compressors
>>>> > with another type, but you will have to obtain and plumb in
> separate
>>>> > exhaust valves. Also the air dryer is incorporated in the
> compressor
>>>> > assemblies,
>>>> > so a filter/dryer should be provided.
>>>> > --
>>>> > John Shutzbaugh, Vacaville, CA, ncserv@aol.com;
>>>> > 77 Eleganza, bought it new, can't blame PO, and
>>>> > 78 Buskirk stretch, "What were we thinking?"
>>>> >
>>>> > _______________________________________________
>>>> > GMCnet mailing list
>>>> > Unsubscribe or Change List Options:
>>>> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>> >
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>> --
>>> Gene Fisher -- 74-23,77PB/ore/ca
>>> “Give a man a fish; you have fed him for today --- give him a URL and
>>> -------
>>> http://gmcmotorhome.info/
>>> Alternator Protection Cable
>>> http://gmcmotorhome.info/APC.html
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> “Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://gmcmotorhome.info/
> Alternator Protection Cable
> http://gmcmotorhome.info/APC.html
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
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http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
1978 Palm Beach.
Detroit Michigan
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| Re: [GMCnet] Modify electrolevel 2 pumps [message #325858 is a reply to message #325832] |
Wed, 08 November 2017 14:08 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
|
Senior Member |
|
|
On Tue, Nov 7, 2017 at 3:16 PM Will wrote:
> Gene, can you provide more detail on how you built yours? I have a concept
> of a large pump and tank, utilizing solenoids with the stock control
> system. I also purchased the wireless system as a totally separate
> scenario. I'm not quite sure which I want to use yet. I'm leaning towards
> the first
Here are the links
http://gmcmotorhome.info/wireless.html
>
> On Nov 7, 2017 5:22 PM, "gene Fisher" wrote:
>
>> On Tue, Nov 7, 2017 at 12:02 PM Will wrote:
>>
>>> LOVE IT, but the company says that it will not work with a tank, yet
> GMC
>>> owners are using a tank =) Its awesome for $400 though!
>>>
>> I am not using tank on my 3 coaches and built my own with 2 pumps. Each
>> valve you replace will cost you more
>>
>>
>>> On Tue, Nov 7, 2017 at 11:12 AM, gene Fisher
>>> wrote:
>>>
>>>> Comsider this
>>>> http://www.gmcmhphotos.com/photos/flor-gmc-27s-in-
>> florence-2c-or/p40827-
>>>> wireless-air-block-diagram-by-gmces-bryon.html
>>>>
>>>>
>>>>
>>>> On Tue, Nov 7, 2017 at 8:08 AM Will wrote:
>>>>
>>>> > Thank you John. Are the level sensors variable voltage, or a simple
>> 12v
>>>> > switch? as one side is a constant 8v regardless of the
>> inflate/deflate
>>>> > switch position. The other is 1v on raise, and 12v on deflate,
>>>> >
>>>> > I'm thinking of a single larger VIAIR with a tank as i have one
> from
>> my
>>>> 4x4
>>>> > days.
>>>> >
>>>> > On Tue, Nov 7, 2017 at 10:40 AM, John Shutzbaugh > ncserv111@gmail.com>
>>>> > wrote:
>>>> >
>>>> > > The valves on the compressors are the LOWER valves and are
>> controlled
>>>> by
>>>> > > the sensors in the wheel wells. It is possible to replace the
>>>> > compressors
>>>> > > with another type, but you will have to obtain and plumb in
>> separate
>>>> > > exhaust valves. Also the air dryer is incorporated in the
>> compressor
>>>> > > assemblies,
>>>> > > so a filter/dryer should be provided.
>>>> > > --
>>>> > > John Shutzbaugh, Vacaville, CA, ncserv@aol.com;
>>>> > > 77 Eleganza, bought it new, can't blame PO, and
>>>> > > 78 Buskirk stretch, "What were we thinking?"
>>>> > >
>>>> > > _______________________________________________
>>>> > > GMCnet mailing list
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>>>> > >
>>>> > _______________________________________________
>>>> > GMCnet mailing list
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>>>> >
>>>> --
>>>> Gene Fisher -- 74-23,77PB/ore/ca
>>>> “Give a man a fish; you have fed him for today --- give him a URL and
>>>> -------
>>>> http://gmcmotorhome.info/
>>>> Alternator Protection Cable
>>>> http://gmcmotorhome.info/APC.html
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>> _______________________________________________
>>> GMCnet mailing list
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>> --
>> Gene Fisher -- 74-23,77PB/ore/ca
>> “Give a man a fish; you have fed him for today --- give him a URL and
>> -------
>> http://gmcmotorhome.info/
>> Alternator Protection Cable
>> http://gmcmotorhome.info/APC.html
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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