GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.

Today's Messages (on)  | Unanswered Messages (off)

Forum: GMCnet
 Topic: Plastic questions
Re: Plastic questions [message #316735 is a reply to message #316708] Fri, 28 April 2017 08:49
Jon Payne is currently offline  Jon Payne   United States
Messages: 466
Registered: May 2008
Karma:
Senior Member
Thanks Ken!

Jon Payne
76 Palm Beach
Westfield,IN
 Topic: Intermediate steering shaft boot
Intermediate steering shaft boot [message #316738] Fri, 28 April 2017 09:01
Glenbrook75 is currently offline  Glenbrook75   Canada
Messages: 39
Registered: January 2017
Location: Dauphin, Manitoba
Karma:
Member
Before I bother Jim K with a ph call does anyone know if you can just get the boot for the intermediate shaft. My young mechanic tells me the boot is torn, some movement in shaft but he feels it does not need replacing. I see Jim has several options for replacing shaft and I see upper and lower boots but no boots for intermediate shaft. Thanks Terry in Dauphin Mb. 75 Glenbrook

Terry 75 Glenbrook Dauphin, Manitoba
Re: Intermediate steering shaft boot [message #316739 is a reply to message #316738] Fri, 28 April 2017 09:10
Larry is currently offline  Larry   United States
Messages: 1918
Registered: January 2004
Location: Menomonie, WI
Karma:
Senior Member
Terry,
Here is a copy/paste of my response to shaft boot issue about two weeks ago. This is a one piece boot that covers the shaft from the CV on down over the slip shaft.

About 10ys ago i was faced with boot issues on the slip shaft. After reading a reference to a 4X4 shock boot being used by somebody, and looking at a picture of the whole shaft in a Caspro catalog, I went to NAPA where I opened every box that had a shock boot and found one that fit almost perfect. The brand name is "Strut Mate". NAPA part # 63975 for $15.95. It covers the CV joint clear down to the zirk on the lower part of the shaft. The upper end was a tight fit and is held in place with the zip tie supplied with the boot. The zip tie however did not work well, so I replaced it with a narrow hose clamp, Lower part was just a little big so I fit the split in the boot around the zirk and put a zip tie on either side of the zirk, keeping it from sliding either up or down, but still leaving the zirk out for greasing. Been using it that way for 10+ years now with no issues. JWID


Larry Smile
78 Royale w/500 Caddy
Menomonie, WI.
Re: Intermediate steering shaft boot [message #316741 is a reply to message #316739] Fri, 28 April 2017 09:44
Glenbrook75 is currently offline  Glenbrook75   Canada
Messages: 39
Registered: January 2017
Location: Dauphin, Manitoba
Karma:
Member
Thanks Larry I will pass that on to my friend. Terry
 Topic: Speedometer Gear Combinations
Re: [GMCnet] Speedometer Gear Combinations [message #316732 is a reply to message #316706] Fri, 28 April 2017 00:09
jimk is currently offline  jimk   United States
Messages: 4123
Registered: July 2006
Location: Belmont, CA
Karma:
Senior Member
Just call me as we can solve it

Get Outlook for iOS
________________________________
From: Gmclist on behalf of John Watkins
Sent: Thursday, April 27, 2017 1:44:36 PM
To: gmclist-AT-list-DOT-gmcnet-DOT-org
Subject: [GMCnet] Speedometer Gear Combinations

OK, my PO added the 3.70 gears to my coach (can't hate him for that). I want to get my speedometer to read correctly and was wondering what
speedometer drive, and driven gear combinations anyone has used successfully?

_______________________________________________
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



Jim Kanomata
Applied/GMC
jimk-AT-appliedairfilters-DOT-com
www.appliedgmc.com
1-800-752-7502
Re: Speedometer Gear Combinations [message #316733 is a reply to message #316706] Fri, 28 April 2017 08:12
skip2 is currently offline  skip2   United States
Messages: 413
Registered: September 2011
Location: Winter Haven,FL (center o...
Karma:
Senior Member
I ordered heat shield tubing, I believe from Sunmmit or Jegs their private brand less expensive different sizes available, and put around speedo cables and anything in the area of the headers, so far so good after I melted down a speedo cable.
Skip Hartline
Re: [GMCnet] Speedometer Gear Combinations [message #316736 is a reply to message #316733] Fri, 28 April 2017 08:42
jimk is currently offline  jimk   United States
Messages: 4123
Registered: July 2006
Location: Belmont, CA
Karma:
Senior Member
You need to strap the cable away from the exaust

Get Outlook for iOS
________________________________
From: Gmclist on behalf of Skip Hartline
Sent: Friday, April 28, 2017 6:12:51 AM
To: gmclist-AT-list-DOT-gmcnet-DOT-org
Subject: Re: [GMCnet] Speedometer Gear Combinations

I ordered heat shield tubing, I believe from Sunmmit or Jegs their private brand less expensive different sizes available, and put around speedo
cables and anything in the area of the headers, so far so good after I melted down a speedo cable.
Skip Hartline

_______________________________________________
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



Jim Kanomata
Applied/GMC
jimk-AT-appliedairfilters-DOT-com
www.appliedgmc.com
1-800-752-7502
Re: [GMCnet] Speedometer Gear Combinations [message #316747 is a reply to message #316736] Fri, 28 April 2017 12:04
Matt Colie is currently offline  Matt Colie   United States
Messages: 6070
Registered: March 2007
Location: S.E. Michigan
Karma:
Senior Member
I don't think you want to change the governor gear. If you do that, you will be moving the shift points up the engine's torque curve and that is one thing you really don't want to do as it would negate some of the value of the higher numerical ratio final drive.

Matt


Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Still Loving OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit
Re: Speedometer Gear Combinations [message #316748 is a reply to message #316706] Fri, 28 April 2017 12:46
Larry is currently offline  Larry   United States
Messages: 1918
Registered: January 2004
Location: Menomonie, WI
Karma:
Senior Member
These GPS Speedo's are pricey, but sure work nice,

https://www.horsepowerfreaks.com/-p-150899736.html?gclid=CNfnvO_Xx9MCFddWDQodQGsOzA


Larry Smile
78 Royale w/500 Caddy
Menomonie, WI.
Re: [GMCnet] Speedometer Gear Combinations [message #316749 is a reply to message #316748] Fri, 28 April 2017 13:12
Vern Crawford is currently offline  Vern Crawford   United States
Messages: 8
Registered: August 2016
Karma:
Junior Member
I picked up a Garmin GPS on sale for something like $129 a few years ago.
It has a very precise digital speedometer. Additionally, for most roads
(90%+) it displays the speed limits as well. It also can calculate routes,
AND does a pretty good job of keeping me on the correct roads.

Hugs,
Vern

Currently at the GMC Classics Rally in Bandera, Texas
On Fri, Apr 28, 2017 at 12:52 PM Larry wrote:

> These GPS Speedo's are pricey, but sure work nice,
>
>
> https://www.horsepowerfreaks.com/-p-150899736.html?gclid=CNfnvO_Xx9MCFddWDQodQGsOzA
> --
> Larry
> 78 Royale w/500 Caddy
> Menomonie, WI.
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Vern Crawford
2013-2014 Past-President
Hill Country Chapter
Texas Master Naturalist

155 J-J Lane
Center Point, TX 78010
(830) 634-2576 home
(618) 203-8296 cell
VernCrawford-AT-GMail-DOT-Com

[image: Texas Master Naturalist_small]
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

 Topic: [GMCnet] Barb's air compresor runs all the time that the ign is on in her 73.
Re: [GMCnet] Barb's air compresor runs all the time that the ign is on in her 73. [message #316734 is a reply to message #316721] Fri, 28 April 2017 08:30
BobDunahugh is currently offline  BobDunahugh   United States
Messages: 1338
Registered: October 2010
Location: Cedar Rapids, IA
Karma:
Senior Member

It seems that someone tried to help her by taking the right air ride valve apart. The parts are in a baggy. Don't know if all the parts are there. Maybe the best thing to do is to get another right control valve somewhere. Pull the fuse since she isn't using the system for now. Or just put in a switch to turn the compressor off. Also need to see if the compressor still works. Since it's been running all the time.
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

Re: [GMCnet] Barb's air compresor runs all the time that the ign is on inher 73. [message #316737 is a reply to message #316729] Fri, 28 April 2017 08:47
jimk is currently offline  jimk   United States
Messages: 4123
Registered: July 2006
Location: Belmont, CA
Karma:
Senior Member
The reassure switch has adjustable screw to set it to shut off at 120 psi
When all things are working it should not need to run much

Get Outlook for iOS
________________________________
From: Gmclist on behalf of diego-DOT-hotrod-AT-gmail-DOT-com
Sent: Thursday, April 27, 2017 7:45:01 PM
To: Bob Dunahugh; gmclist-AT-list-DOT-gmcnet-DOT-org
Subject: Re: [GMCnet] Barb's air compresor runs all the time that the ign is on inher 73.

I’ve touched every part of my 73 Canyonlands I know first hand and have made all of my (many) repairs. With regards to the air compressor. I have learned that the original is slow…..very slow to get to 100-120 psi (mine is set at 120 psi). And I’m not sure that a perfect original was ever fast. Bob, the on/off switch is the ignition switch. It runs in the on and acc position. There should be an out-board pressure switch mounted next to the Dana Compressor. This will shut off the compressor at a predetermined adjustable psi. The storage tank is located on the passenger side of the vehicle very near underneath the two batteries. The tank has a drain, a safety relief valve and mine included a scrader valve. I’ve added a run LED in the warning panel but the compressor is so noisy that I hardly need a light. I’ve also added a guage at the tank and a QD for the unexpected. I have been using mine for the past 1 year during the restoration and surprisingly it has performed better than expected.

I commend you on your efforts.

Rod Utterback
1973 26ft Canyonlands
Too much to list
Escondido, Ca.

From: Bob Dunahugh
Sent: Thursday, April 27, 2017 4:57 PM
To: gmclist-AT-list-DOT-gmcnet-DOT-org
Subject: [GMCnet] Barb's air compresor runs all the time that the ign is on inher 73.

I know absolutely NOTHING about the 1973 air ride system. So I know I'm LOST. Then with parts missing. There is a pressure shut off switch. Were is the manual off switch. The right side controls are not there. This part of this GMC is a mess. Bob Dunahugh
_______________________________________________
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
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org



Jim Kanomata
Applied/GMC
jimk-AT-appliedairfilters-DOT-com
www.appliedgmc.com
1-800-752-7502
Re: [GMCnet] Barb's air compresor runs all the time that the ign is on in her 73. [message #316740 is a reply to message #316734] Fri, 28 April 2017 09:31
BobDunahugh is currently offline  BobDunahugh   United States
Messages: 1338
Registered: October 2010
Location: Cedar Rapids, IA
Karma:
Senior Member
Checked the compressor. 80 PSI is all it could get too. It's a Firestone Ride Rite. Are those fixable? Bob Dunahugh




It seems that someone tried to help her by taking the right air ride valve apart. The parts are in a baggy. Don't know if all the parts are there. Maybe the best thing to do is to get another right control valve somewhere. Pull the fuse since she isn't using the system for now. Or just put in a switch to turn the compressor off. Also need to see if the compressor still works. Since it's been running all the time.
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

Re: [GMCnet] Barb's air compresor runs all the time that the ign is on in her 73. [message #316742 is a reply to message #316740] Fri, 28 April 2017 09:57
lqqkatjon is currently offline  lqqkatjon   United States
Messages: 1392
Registered: October 2010
Location: St. Cloud, MN
Karma:
Senior Member
I would guess not rebuildable.

Odd thing is if it is a 100% duty cycle, it says max pressure 100 psi.

These the specs?
http://riderite.com/-/media/www/riderite/files/Air%20Accessory/Catalogs%20PgsCompressors.pdf




Jon Roche 75 palm beach St. Cloud, MN http://lqqkatjon.blogspot.com/
Re: [GMCnet] Barb's air compresor runs all the time that the ign is on in her 73. [message #316743 is a reply to message #316740] Fri, 28 April 2017 10:01
midlf is currently offline  midlf   United States
Messages: 2028
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma:
Senior Member
Bob - the original vales, after 40+ years are crap. I rebuilt mine once. No go. Took the ones out of the transmode. N.G. Rebuilt the transmode ones. N.G. Then I got smart and put in a set of JR's Powerlevel II's. Problem solved.

I had a Dana Compressor. It did the job, sorta. For yucks I installed a horror freight Viair clone. I rebuilt the Dana. N.G. Ordered the Viair continuous duty model. Problem solved.

I don't know what Barb's budget is but anything short of what is described above will result in future problems. While you are at it the addiction of a fuse and relay to get the high current out of the wiring harness and ignition switch is also a must do and a very inexpensive upgrade.


Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
Re: [GMCnet] Barb's air compresor runs all the time that the ign is on in her 73. [message #316744 is a reply to message #316742] Fri, 28 April 2017 10:39
James Hupy is currently offline  James Hupy   United States
Messages: 4134
Registered: May 2010
Karma:
Senior Member
Bob, best LOW COST fix is as follows. J.R. Slaten dash valves that replace
the round knob O.E. ones. Then, replace what ever compressor is there with
a 380C ViAir compressor. If the air tank is still good, use it. Make sure
that there is a check valve in line between the compressor and the tank.
The pressure switch should cycle the compressor in the 80 psi /120 psi
range. It is better to only use the ignition key to trigger a relay that
powers the compressor. No heavy currents should flow through through the
column. Check every single air line connection with children's bubble soap,
and show her how to do that. It will become a life's work chasing leaks in
all those hoses and valves. She should know how it is done. Check the
leveling valves and their linkages in the wheel wells of the coach as well
as the bags themselves for leaks. Once you have found and repaired all of
the leaks, you should have a fairly reliable system. If you want to go one
step further, consider installing shut off valves at the bags combined with
Schrader inflation fittings. Then, with only a cigarette lighter powered
air compressor, she will be able to inflate the bags and isolate them with
the shut off valves until the leaks can be found and repaired. 40 year old
plastic lines are like hard drives. They either have already failed, or,
they are about ready to. Thanks for helping keep her on the road. Good on
'ya , mate.
Jim Hupy
Salem, Or
78 GMC ROYALE 403


On Apr 28, 2017 8:03 AM, "Jon Roche" wrote:

> I would guess not rebuildable.
>
> Odd thing is if it is a 100% duty cycle, it says max pressure 100 psi.
>
> These the specs?
> http://riderite.com/-/media/www/riderite/files/Air%20Accessory/Catalogs%
> 20PgsCompressors.pdf
>
>
>
> --
> Jon Roche
> 75 palm beach
> St. Cloud, MN
> http://lqqkatjon.blogspot.com/
>
> _______________________________________________
> 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

Re: [GMCnet] Barb's air compresor runs all the time that the ign is on in her 73. [message #316745 is a reply to message #316744] Fri, 28 April 2017 10:44
James Hupy is currently offline  James Hupy   United States
Messages: 4134
Registered: May 2010
Karma:
Senior Member
Best high cost fix? Install my wireless remote controlled air system, and
throw all that other 40 year old crap away. I know she is not made of $$$,
so that is probably not an option for her, but it is available if need be.
Jim Hupy

On Apr 28, 2017 8:39 AM, "James Hupy" wrote:

> Bob, best LOW COST fix is as follows. J.R. Slaten dash valves that replace
> the round knob O.E. ones. Then, replace what ever compressor is there with
> a 380C ViAir compressor. If the air tank is still good, use it. Make sure
> that there is a check valve in line between the compressor and the tank.
> The pressure switch should cycle the compressor in the 80 psi /120 psi
> range. It is better to only use the ignition key to trigger a relay that
> powers the compressor. No heavy currents should flow through through the
> column. Check every single air line connection with children's bubble soap,
> and show her how to do that. It will become a life's work chasing leaks in
> all those hoses and valves. She should know how it is done. Check the
> leveling valves and their linkages in the wheel wells of the coach as well
> as the bags themselves for leaks. Once you have found and repaired all of
> the leaks, you should have a fairly reliable system. If you want to go one
> step further, consider installing shut off valves at the bags combined with
> Schrader inflation fittings. Then, with only a cigarette lighter powered
> air compressor, she will be able to inflate the bags and isolate them with
> the shut off valves until the leaks can be found and repaired. 40 year old
> plastic lines are like hard drives. They either have already failed, or,
> they are about ready to. Thanks for helping keep her on the road. Good on
> 'ya , mate.
> Jim Hupy
> Salem, Or
> 78 GMC ROYALE 403
>
>
> On Apr 28, 2017 8:03 AM, "Jon Roche" wrote:
>
>> I would guess not rebuildable.
>>
>> Odd thing is if it is a 100% duty cycle, it says max pressure 100 psi.
>>
>> These the specs?
>> http://riderite.com/-/media/www/riderite/files/Air%20Accesso
>> ry/Catalogs%20PgsCompressors.pdf
>>
>>
>>
>> --
>> Jon Roche
>> 75 palm beach
>> St. Cloud, MN
>> http://lqqkatjon.blogspot.com/
>>
>> _______________________________________________
>> 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

Re: [GMCnet] Barb's air compresor runs all the time that the ign is on in her 73. [message #316746 is a reply to message #316740] Fri, 28 April 2017 11:37
A Hamilto is currently offline  A Hamilto   United States
Messages: 4324
Registered: April 2011
Karma:
Senior Member
BobDunahugh wrote on Fri, 28 April 2017 08:30
It seems that someone tried to help her by taking the right air ride valve apart. The parts are in a baggy. Don't know if all the parts are there. Maybe the best thing to do is to get another right control valve somewhere. Pull the fuse since she isn't using the system for now. Or just put in a switch to turn the compressor off. Also need to see if the compressor still works. Since it's been running all the time.
BobDunahugh wrote on Fri, 28 April 2017 09:31
Checked the compressor. 80 PSI is all it could get too. It's a Firestone Ride Rite. Are those fixable?
Bob,

Clearly she already has a way to isolate the bags. So if the best you can do is get it down to some slow leaks in the system, that is OK for going down the road, and when she gets where she is going, she can raise or lower the bags to camp and then isolate the bags. When ready to travel, start the engine and get pressure in the system, un-isolate the bags, set the valves to "travel", and go.

Order valve rebuild kit here:

http://www.appliedgmc.com/prod.itml/icOid/953

Order compressor here:

http://www.appliedgmc.com/prod.itml/icOid/1050

If it was an OEM compressor and you didn't have to pay the core charge, the Dana compressor would have cost less than the Viair.

If you buy a new compressor and Slaten valves, its not that much more for Jim Hupy's wireless air system.

FWIW, if you change the bags out to SullyBilt or similar, 80 PSI would be enough. But that's $700.

Any SOLID fix is going to be non-trivial dollars. That's probably how she ended up where she is now.

How was she inflating the bags if the compressor only got to 80 PSI? Does she carry a portable 12V compressor?


73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
Re: [GMCnet] Barb's air compresor runs all the time that the ign is on in her 73. [message #316750 is a reply to message #316740] Fri, 28 April 2017 13:50
BobDunahugh is currently offline  BobDunahugh   United States
Messages: 1338
Registered: October 2010
Location: Cedar Rapids, IA
Karma:
Senior Member
Thank you guys for the info last night, and today. Great info for Barb to decide what to do. So we just had a POW WOW. It comes down too. The system needs a lot. She has a portable ViAir in a bag that she keeps tires, and air bags up. As she has the isolation valves on the bags. So I'm pulling the compressor fuse. Any GMC that I get involved with. Always gets a 6 fuse covered panel installed by the wiper motor. It's energized by a relay. From the main panel in the glove box. That panel is used to power all added loads like the cruise. If she gets a new compressor. That can be plugged into that panel. Plus all this info will help my on the 73 that I'm going to fix up to sell. Bob Dunahugh

________________________________
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org




Current Time: Fri Apr 28 14:49:01 CDT 2017

Total time taken to generate the page: 0.03724 seconds