Home » Public Forums » GMCnet » [GMCnet] Air bag plumbing size
Re: [GMCnet] Air bag plumbing size [message #342536 is a reply to message #250299] |
Mon, 15 April 2019 18:56 |
kstockwell
Messages: 367 Registered: May 2016 Location: Putney VT
Karma: 4
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Senior Member |
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Hi All,
I was just one of these people, side of I-90 in MA. The connection from the T block to the shut off valve sheared off. I unhooked the schrader valve from the other end of the T and put it into the bag, got the statie's repair guy to jack it up a few inches and then we filled it up and off I went.
I could not get any fittings off so I could put the tubing directly into the bag, along with carrying schrader valves, what's the fitting that goes from the 1/4" bag inlet to the tubing?
Thank you, going to go back to basics
https://www.facebook.com/groups/classicgmcmotorhomes/permalink/1340532099404657/
kelly
Ken Burton wrote on Wed, 21 May 2014 22:36That is a problem with adding all of that extra hardware on the end of the air bag fitting. The airbag is constantly bouncing as you drive down the road and the weight of the extra hardware has to be supported by the "elbow" screwed into the bag as it bounces around.
If the air system works correctly then get rid of all of that extra stuff and screw the air hose connector directly into the airbag as GM designed it. If it bothers you that someday you might need to air the bag up separate from the on board compressor, then carry one or two schrader valves and screw them into air the air bag(s) when necessary. I carry two of them in my coach and have never needed them.
I took a local black list call a few years ago from someone who was stranded along the Interstate with what they said was a blown bag. When I got there with a spare bag I found that the problem was not the bag but instead was that first fitting in the bag had broken off flush with the end of the threads of the bag. I ended up installing the spare bag and brought them to my hangar. It took me a couple of hours to extract the old broken piece out of the original bag. By this time it was dark so they stayed over night and we reinstalled the original, now repaired, bag back on the coach the next morning. We also removed all of that extra hardware on the other side and changed it back to stock.
That whole incident added about 1.5 days to their vacation and was caused by something that was totally unnecessary in the first place.
JMHO
I believe all of that stuff is 1/4" pipe thread.
1978 Kingsley
Putney VT
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Re: [GMCnet] Air bag plumbing size [message #342540 is a reply to message #342536] |
Mon, 15 April 2019 21:09 |
Dolph Santorine
Messages: 1236 Registered: April 2011 Location: Wheeling, WV
Karma: -41
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Senior Member |
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Kelly
A number of our vendors have nicely put together “kits” that will allow you to do this.
You might want to reach out to them.
HTH
Dolph Santorine
DE AD0LF
Wheeling, West Virginia
1977 ex-Palm Beach TZE167V100820
Sullybuilt Bags, Reaction Arms, Manny Transmission
> On Apr 15, 2019, at 7:56 PM, kelly stockwell via Gmclist wrote:
>
> Hi All,
>
> I was just one of these people, side of I-90 in MA. The connection from the T block to the shut off valve sheared off. I unhooked the schrader valve
> from the other end of the T and put it into the bag, got the statie's repair guy to jack it up a few inches and then we filled it up and off I went.
>
>
> I could not get any fittings off so I could put the tubing directly into the bag, along with carrying schrader valves, what's the fitting that goes
> from the 1/4" bag inlet to the tubing?
>
> Thank you, going to go back to basics
> https://www.facebook.com/groups/classicgmcmotorhomes/permalink/1340532099404657/
> kelly
>
>
>
>
>
> Ken Burton wrote on Wed, 21 May 2014 22:36
>> That is a problem with adding all of that extra hardware on the end of the air bag fitting. The airbag is constantly bouncing as you drive down
>> the road and the weight of the extra hardware has to be supported by the "elbow" screwed into the bag as it bounces around.
>>
>> If the air system works correctly then get rid of all of that extra stuff and screw the air hose connector directly into the airbag as GM designed
>> it. If it bothers you that someday you might need to air the bag up separate from the on board compressor, then carry one or two schrader valves
>> and screw them into air the air bag(s) when necessary. I carry two of them in my coach and have never needed them.
>>
>> I took a local black list call a few years ago from someone who was stranded along the Interstate with what they said was a blown bag. When I got
>> there with a spare bag I found that the problem was not the bag but instead was that first fitting in the bag had broken off flush with the end of
>> the threads of the bag. I ended up installing the spare bag and brought them to my hangar. It took me a couple of hours to extract the old broken
>> piece out of the original bag. By this time it was dark so they stayed over night and we reinstalled the original, now repaired, bag back on the
>> coach the next morning. We also removed all of that extra hardware on the other side and changed it back to stock.
>>
>> That whole incident added about 1.5 days to their vacation and was caused by something that was totally unnecessary in the first place.
>>
>> JMHO
>>
>> I believe all of that stuff is 1/4" pipe thread.
>
> --
> 1978 Kingsley
> Putney VT
>
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Re: [GMCnet] Air bag plumbing size [message #342577 is a reply to message #342540] |
Tue, 16 April 2019 18:29 |
kstockwell
Messages: 367 Registered: May 2016 Location: Putney VT
Karma: 4
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Senior Member |
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I don't want a kit, I just want a 1/4" NPT to the tube connection (no blocks, no shut offs, no T). I have an existing line with a nut on the tubing and the bag. I had looked on various GMC sites and didn't see exactly what I need.
Maybe it's not standard and I just go to a hardware store and look for things that match.
1978 Kingsley
Putney VT
[Updated on: Tue, 16 April 2019 18:30] Report message to a moderator
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Re: [GMCnet] Air bag plumbing size [message #342579 is a reply to message #342577] |
Tue, 16 April 2019 20:28 |
Jimmy_Bonez
Messages: 105 Registered: September 2017 Location: NH
Karma: 0
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Senior Member |
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Kelly what ever fitting you decide to use make sure it is of quality preferably DOT. If you shoot down to the Brattleboro NAPA more than likely they can get you a DOT fitting to fit your application.
Sent from my iPhone
> On Apr 16, 2019, at 7:29 PM, kelly stockwell via Gmclist wrote:
>
> I don't want a kit, I just want a 1/4" NPT to the tube connection (no blocks, no shut offs, no T). I have an existing line with a nut on the tubing
> and the bag.
> Maybe it's not standard and I just go to a hardware store and look for things that match.
>
>
> --
> 1978 Kingsley
> Putney VT
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
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Jim DeMellia and Jen Radefeld and our cat Ickis
NH natives
1975 GMC “Palm Beach” ,455, her names Linda
Full time RVers exploring the beautiful and unusual parts of the country.
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Re: [GMCnet] Air bag plumbing size [message #342586 is a reply to message #342577] |
Tue, 16 April 2019 22:50 |
sgltrac
Messages: 2797 Registered: April 2011
Karma: 1
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Senior Member |
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Les schwab or any place that works on trucks will have what you need. 1/4”
npt male to 1/4” hose compression on the line side. Should come with a nut
on one side that you slip over the freshly trimmed line which you press
over a barb and then drop the nit down the line over the barb.
Sully
Bellevue wa
On Tue, Apr 16, 2019 at 4:30 PM kelly stockwell via Gmclist <
gmclist@list.gmcnet.org> wrote:
> I don't want a kit, I just want a 1/4" NPT to the tube connection (no
> blocks, no shut offs, no T). I have an existing line with a nut on the
> tubing
> and the bag.
> Maybe it's not standard and I just go to a hardware store and look for
> things that match.
>
>
> --
> 1978 Kingsley
> Putney VT
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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Re: [GMCnet] Air bag plumbing size [message #342591 is a reply to message #342536] |
Wed, 17 April 2019 05:54 |
Ken Henderson
Messages: 8726 Registered: March 2004 Location: Americus, GA
Karma: 9
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Senior Member |
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Kelly,
I don't understand all the traffic for this. A simple Google search for
"1/4 npt male to 1/4 tubing" yields over a million results (many
inappropriate, of course). Here's one of them:
https://www.amazon.com/Pcs-Tube-push-connect-fitting-x/dp/B01DQ1A8YM
Ken H.
On Tue, Apr 16, 2019 at 8:14 AM kelly stockwell via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Hi All,
>
> I was just one of these people, side of I-90 in MA. The connection from
> the T block to the shut off valve sheared off. I unhooked the schrader
> valve
> from the other end of the T and put it into the bag, got the statie's
> repair guy to jack it up a few inches and then we filled it up and off I
> went.
>
>
> I could not get any fittings off so I could put the tubing directly into
> the bag, along with carrying schrader valves, what's the fitting that goes
> from the 1/4" bag inlet to the tubing?
>
> Thank you, going to go back to basics
>
> https://www.facebook.com/groups/classicgmcmotorhomes/permalink/1340532099404657/
> kelly
>
>
>
>
>
> Ken Burton wrote on Wed, 21 May 2014 22:36
>> That is a problem with adding all of that extra hardware on the end of
> the air bag fitting. The airbag is constantly bouncing as you drive down
>> the road and the weight of the extra hardware has to be supported by the
> "elbow" screwed into the bag as it bounces around.
>>
>> If the air system works correctly then get rid of all of that extra
> stuff and screw the air hose connector directly into the airbag as GM
> designed
>> it. If it bothers you that someday you might need to air the bag up
> separate from the on board compressor, then carry one or two schrader valves
>> and screw them into air the air bag(s) when necessary. I carry two of
> them in my coach and have never needed them.
>>
>> I took a local black list call a few years ago from someone who was
> stranded along the Interstate with what they said was a blown bag. When I
> got
>> there with a spare bag I found that the problem was not the bag but
> instead was that first fitting in the bag had broken off flush with the end
> of
>> the threads of the bag. I ended up installing the spare bag and brought
> them to my hangar. It took me a couple of hours to extract the old broken
>> piece out of the original bag. By this time it was dark so they stayed
> over night and we reinstalled the original, now repaired, bag back on the
>> coach the next morning. We also removed all of that extra hardware on
> the other side and changed it back to stock.
>>
>> That whole incident added about 1.5 days to their vacation and was
> caused by something that was totally unnecessary in the first place.
>>
>> JMHO
>>
>> I believe all of that stuff is 1/4" pipe thread.
>
> --
> 1978 Kingsley
> Putney VT
>
> _______________________________________________
> 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
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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Re: [GMCnet] Air bag plumbing size [message #342592 is a reply to message #342586] |
Wed, 17 April 2019 06:04 |
kstockwell
Messages: 367 Registered: May 2016 Location: Putney VT
Karma: 4
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Senior Member |
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Sully,
What you just described is what I'm looking for (or at least what I have now). It's the piece I can't get out of the T fitting, I know 1/4" NPT on one side, I didn't know it was called 1/4" hose compression fitting on the other. Thank you.
My plan is to forgo the shut off valve, the T valve, the schrader valve (carry schrader valves with me) and go from the compressor into the bag. It's surprising how heavy the T block and the shut off valve are
https://shop.advanceautoparts.com/p/american-grease-stick-co-brass-compression-connector-1-4-tube-male-1-4-18-npt-cf-13c/11408070-P
Cheers
kelly
sgltrac wrote on Tue, 16 April 2019 23:50Les schwab or any place that works on trucks will have what you need. 1/4"
npt male to 1/4" hose compression on the line side. Should come with a nut
on one side that you slip over the freshly trimmed line which you press
over a barb and then drop the nit down the line over the barb.
Sully
Bellevue wa
On Tue, Apr 16, 2019 at 4:30 PM kelly stockwell via Gmclist <
gmclist@list.gmcnet.org> wrote:
> I don't want a kit, I just want a 1/4" NPT to the tube connection (no
> blocks, no shut offs, no T). I have an existing line with a nut on the
> tubing
> and the bag.
> Maybe it's not standard and I just go to a hardware store and look for
> things that match.
>
>
> --
> 1978 Kingsley
> Putney VT
>
> _______________________________________________
> 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
1978 Kingsley
Putney VT
[Updated on: Wed, 17 April 2019 06:20] Report message to a moderator
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