Home » Public Forums » GMCnet » [GMCnet] Quick Connections for Air Lines
| [GMCnet] Quick Connections for Air Lines [message #159704] |
Thu, 09 February 2012 10:14  |
Arthur Mansfield
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Registered: April 2010
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I just purchased a couple of fitting for rear air line system that are quick connections. Slide the tube into the fitting and you are done. I got them for repair if needed but I am not sure they would be good for long term use. Has anyone ever used them.
The dealer said they are used on truck air brakes so I guess they are reliable. You can remove them by pushing them in but it is not as easy as it sounds to remove them.
Art & Doris
76 EL
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| Re: [GMCnet] Quick Connections for Air Lines [message #159705 is a reply to message #159704] |
Thu, 09 February 2012 10:38  |
GMC Cruse
Messages: 606
Registered: June 2009
Location: SE Michigan
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| Arthur Mansfield wrote on Thu, 09 February 2012 11:14 |
I just purchased a couple of fitting for rear air line system that are quick connections. Slide the tube into the fitting and you are done. I got them for repair if needed but I am not sure they would be good for long term use. Has anyone ever used them.
The dealer said they are used on truck air brakes so I guess they are reliable. You can remove them by pushing them in but it is not as easy as it sounds to remove them.
Art & Doris
76 EL
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If you mean the "Prestolok" ones, I've used them. They seem to be working well and are DOT approved. I purchased them at the "Parker" store.
Mike K.
'75 PB
Southeast Michigan
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| Re: [GMCnet] Quick Connections for Air Lines [message #159706 is a reply to message #159704] |
Thu, 09 February 2012 10:40 |
Donovan-formerly Jase386
Messages: 139
Registered: January 2009
Location: Greenville SC
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I had some of the ones with the plastic locks on the ends, those leaked very easily.
While searching for leaks with this last re-do of the airbags i found where a quick connect had been used to repair a line, its a full brass quick connect that has been there at least 4 years and it is not leaking.
I preferred the compression fittings, but lots of truckers and truck shops are happy with the quick connects.
Donovan, Greenville SC
1975 Eleganza II
81,500 miles
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| Re: [GMCnet] Quick Connections for Air Lines [message #159709 is a reply to message #159704] |
Thu, 09 February 2012 10:44 |
idrob
Messages: 645
Registered: January 2005
Location: Central Idaho
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| Arthur Mansfield wrote on Thu, 09 February 2012 08:14 |
I just purchased a couple of fitting for rear air line system that are quick connections. Slide the tube into the fitting and you are done. I got them for repair if needed but I am not sure they would be good for long term use. Has anyone ever used them.
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I used them on my GMC when I had it. They worked very well. Mitch in Tacoma owns it now, and he may be able to say if they have held up OK. JR Slatten Air Valves used the same push on fittings, and JR's stuff is first class.
An album of what I used: http://www.gmcmhphotos.com/photos/showgallery.php?cat=3889
Rob Allen
former owner of '76 x-PB
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| Re: [GMCnet] Quick Connections for Air Lines [message #159714 is a reply to message #159709] |
Thu, 09 February 2012 11:21 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
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| idrob wrote on Thu, 09 February 2012 10:44 |
| Arthur Mansfield wrote on Thu, 09 February 2012 08:14 |
I just purchased a couple of fitting for rear air line system that are quick connections. Slide the tube into the fitting and you are done. I got them for repair if needed but I am not sure they would be good for long term use. Has anyone ever used them.
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I used them on my GMC when I had it. They worked very well. Mitch in Tacoma owns it now, and he may be able to say if they have held up OK. JR Slatten Air Valves used the same push on fittings, and JR's stuff is first class.
An album of what I used: http://www.gmcmhphotos.com/photos/showgallery.php?cat=3889
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The parker ones are supposed to be better than the brass compression fitting ones.
So say the low rider guys.
they tested them
But im more concerned with long term leak resistance which is hard to test
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: [GMCnet] Quick Connections for Air Lines [message #159756 is a reply to message #159704] |
Thu, 09 February 2012 16:21 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
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Art,
Before you push the tube into the fitting look at the first 1/2" or so of the tubing to make sure it is not damaged / scratched in
any way, shape, or form. It's not a bad idea to put a bit of oil on your fingertips and then rub the end of the tube before you
insert it.
Here's a link to the Parker Hannifin catalog; the first couple of pages that show you how they are made, how to install, and remove
them.
http://c-global.com/3501_pdf/pm.pdf
Regards,
Rob M.
-----Original Message-----
From: 1104agm
I just purchased a couple of fitting for rear air line system that are quick connections. Slide the tube into the fitting and you
are done. I got them for repair if needed but I am not sure they would be good for long term use. Has anyone ever used them.
The dealer said they are used on truck air brakes so I guess they are reliable. You can remove them by pushing them in but it is not
as easy as it sounds to remove them.
Art
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Quick Connections for Air Lines [message #159765 is a reply to message #159758] |
Thu, 09 February 2012 16:58 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Ken,
That makes two of us! I have a hard copy of the PH catalog and found the page, I hadn't READ it.
However, I reckon if your system doesn't leak it might come under, "if its not broke don't fix it."
At least it won't be hard to disassemble the fittings and install the tubes! ;-)
Regards,
Rob M.
-----Original Message-----
From: Ken Henderson
Thanks for that link, Rob. This is the first time I've heard of using the "stainless steel tube supports" with 1/4" tube & press
fittings. NONE of mine have them. :-(
Ken H.
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Quick Connections for Air Lines [message #159773 is a reply to message #159770] |
Thu, 09 February 2012 17:35 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Bruce,
Interesting thought, they are called Prestomatic Air Brake Push-In Fittings and as such I would think they would be OK.
However, being the anally retentive pedantic bastard that I am you have motivated me to call Parker Hannifin Customer Service when I
get back to the USA next week and see what they say!
Regards,
Rob M.
-----Original Message-----
From: Bruce Hislop
I have a quick-release fitting on the line going into the tank from the compressor. Seems to work well, however there only seems to
be a little O ring in there. My tank is in the cupboard, not outside so its clean and dry.
I'd be wary about using them out on the airbags with all the dust, dirt and vibration.
Bruce
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Quick Connections for Air Lines [message #159791 is a reply to message #159705] |
Thu, 09 February 2012 19:41 |
GMC Cruse
Messages: 606
Registered: June 2009
Location: SE Michigan
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[/quote]
If you mean the "Prestolok" ones, I've used them. They seem to be working well and are DOT approved. I purchased them at the "Parker" store.[/quote]
After Rob's posing, I got to thinking, "Prestolok", might not be the one's I bought. Memory was wrong as I checked and have the "Prestomatic" ones with steel housing, no thermoplastic as the "Prestolok" have.
Mike K.
'75 PB
Southeast Michigan
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| Re: [GMCnet] Quick Connections for Air Lines [message #159794 is a reply to message #159704] |
Thu, 09 February 2012 19:47 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Some people love then and some hate them. I got a couple of them from a friend who works on hydraulic and air stuff all the time. He loves them. I could ever get them to quit leaking.
Install them and if they do not leak they should be OK. I personally won't use them. It is kind of like arguing about which is worse Chryslers or Fords. You will get opinions on both sides.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Quick Connections for Air Lines [message #159796 is a reply to message #159791] |
Thu, 09 February 2012 19:53 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Mike,
Hmmm, you got ME confused! ;-)
The link I published was to Prestomatic Air Brake Push-In Fittings by Parker.
Features
1. All brass body
They also make:
PTC Composite Push-In Air Brake Fittings
Features
1. Composite body - Strong, lightweight, compact, and impact resistant
Regards,
Rob M.
-----Original Message-----
From: Mike
[/quote]
If you mean the "Prestolok" ones, I've used them. They seem to be working well and are DOT approved. I purchased them at the
"Parker" store.[/quote]
After Rob's posing, I got to thinking, "Prestolok", might not be the one's I bought. Memory was wrong as I checked and have the
"Prestomatic" ones with steel housing, no thermoplastic as the "Prestolok" have.
--
Mike K.
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Quick Connections for Air Lines [message #159846 is a reply to message #159827] |
Fri, 10 February 2012 03:09 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Mike,
I'm UN-confused!
I followed one of the links you provided below to this link:
http://www.parker.com/portal/site/PARKER/menuitem.338f315e827b2c6315731910237ad1ca/?vgnextoid=8d247f71ad65e210VgnVCM10000048021dacRC
RD&vgnextfmt=EN&vgnextcat=FSC+US+CATALOG&vgnextcatid=7653&vgnextdiv=687547&productcategory=productline
I scrolled down and found:
PRESTOLOK COMPOSITE - INCH
PRESTOLOK COMPOSITE - METRIC
PRESTOLOK II
PRESTOLOK PLUS
PRESTOMATIC-INCH
PRESTOMATIC-METRIC
PRESTOWELD
PTC
As you can see there's a raft of the bloody things!
AFAIK as long as they have a pressure rating of over 150 PSI they're OK to use in the rear suspension system. It is possible that
one type would work better than others but without any proper testing that's anybody's guess!
BTW nice find on the catalog.
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: Mike
Rob, I guess I'm confused too. The ones I do not have are "Prestolok" like these, some of which have thermoplastic housings.
http://www.parker.com/portal/site/PARKER/menuitem.7100150cebe5bbc2d6806710237ad1ca?vgnextdiv=687378&vgnextfmt=default&vgnextcatid=18
5291&vgnextcat=PRESTOLOK%20PUSH-IN%20FITTINGS&vgnextoid=f5c9b5bbec622110VgnVCM10000032a71dacRCRD
After your post, I must have had "Prestomatic" on my mind and typed that instead of what I actually have. I actually have
"Prestolok Plus" fittings which I thought had a steel housing but are actually nickel plated brass.
http://www.parker.com/portal/site/PARKER/menuitem.338f315e827b2c6315731910237ad1ca/?vgnextoid=8d247f71ad65e210VgnVCM10000048021dacRC
RD&vgnextfmt=EN&productcategory=productline&vgnextdiv=687547&vgnextcatid=1891402&vgnextcat=PRESTOLOK+PLUS&Wtky=
--
Mike
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Quick Connections for Air Lines [message #159910 is a reply to message #159709] |
Fri, 10 February 2012 13:08 |
Mitch
Messages: 272
Registered: May 2009
Location: Tacoma, Wa
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I've had one air leak problem since acquiring my coach, and that proved to be a brass reducer to a pressure gauge under the hood.
Other than that, she holds air well.
Good job Rob.
Mitch
Tacoma, Wa.
'80 Spitfire
'03 Windstar
'77 Jaguar XJ6-C
X(very)'76 PB 26 "The Beast"
Where it rains, always.
It's wet, No sun, Gray.
Go to Oregon.
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| Re: [GMCnet] Quick Connections for Air Lines [message #160022 is a reply to message #159704] |
Sat, 11 February 2012 18:42 |
GMCNUSA
Messages: 283
Registered: August 2006
Location: Indianapolis, IN
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| Arthur Mansfield wrote on Thu, 09 February 2012 11:14 |
I just purchased a couple of fitting for rear air line system that are quick connections. Slide the tube into the fitting and you are done. I got them for repair if needed but I am not sure they would be good for long term use. Has anyone ever used them.
The dealer said they are used on truck air brakes so I guess they are reliable. You can remove them by pushing them in but it is not as easy as it sounds to remove them.
Art & Doris
76 EL
_______________________________________________
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Just another view point.
I had dinner with a friend who owns a truck (big diesel) repair facility and they specilize in air brake repairs. I happened to ask him what he thought of the quick connect tubing fittings and he said he never uses them, they always use the compression type fittings when repairing or replacing air lines.
Larry Dilk
Indianapolis, IN
76 Eleganza II
Patterson 455,Turbo City TBI,
Just LOVE It!
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