Home » Public Forums » GMCnet » Ride Height on 23 Foot without Frame Slots?
| Ride Height on 23 Foot without Frame Slots? [message #265724] |
Sun, 09 November 2014 11:04  |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma: 4
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Senior Member |
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Hello All:
I'm installing a one ton for a fellow GMCer on a 23 foot. The unit has new frame rails without slots in front and rear.
I do not have another coach close to measure where they were on the frame to compare.
Question is: Does anyone know the ride heights for the 23 foot from ground to the bottom of the frame rails?
I remember the discussion somewhere but now I can't find it.
Best Regards
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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| Re: [GMCnet] Ride Height on 23 Foot without Frame Slots? [message #265739 is a reply to message #265724] |
Sun, 09 November 2014 16:30  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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John,
See MM X-7525 / Section 4 - REAR SUSPENSION / Page 4-34 / Figure 70 - Checking Vehicle Ride Height
Note that the figure provides the location of the rear slots for both the 23' and 26' models.
You can calculate the ride height from the bottom of the frame using the following photographs:
http://www.gmcmhphotos.com/photos/aa-miscellaneous-photos/p40039-front-height-adjustmen.html
IIRC the bolts shown have a 3/4" head and the ride height slot sure looks the same.
http://www.gmcmhphotos.com/photos/aa-miscellaneous-photos/p40040-rear-height-adjustment.html
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of John Heslinga
Sent: Monday, November 10, 2014 4:04 AM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Ride Height on 23 Foot without Frame Slots?
Hello All:
I'm installing a one ton for a fellow GMCer on a 23 foot. The unit has new frame rails without slots in front and rear.
I do not have another coach close to measure where they were on the frame to compare.
Question is: Does anyone know the ride heights for the 23 foot from ground to the bottom of the frame rails?
I remember the discussion somewhere but now I can't find it.
Best Regards
--
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:73 LS,
TC4W "Too Cool For Words"
Retirement Projects Galore
Edmonton, Alberta
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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: Ride Height on 23 Foot without Frame Slots? [message #265747 is a reply to message #265724] |
Sun, 09 November 2014 19:52 |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma: 4
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Senior Member |
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Thanks Rob.
That will work very well too.
By the way
I now have an original engine oil cooler adapter gasket (ring) to measure dimentions with. I'll report once doing so. Its actually more comples shape tgam an o ring.
Best regards
John
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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| Re: [GMCnet] Ride Height on 23 Foot without Frame Slots? [message #265756 is a reply to message #265747] |
Sun, 09 November 2014 23:57 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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John,
Interesting is it a Quad Ring?
http://www.mnrubber.com/Design_Guide/6-3.html
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of John Heslinga
Sent: Monday, November 10, 2014 12:52 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Ride Height on 23 Foot without Frame Slots?
Thanks Rob.
That will work very well too.
By the way
I now have an original engine oil cooler adapter gasket (ring) to measure dimentions with. I'll report once doing so. Its
actually more comples shape tgam an o ring.
Best regards
John
--
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:73 LS,
TC4W "Too Cool For Words"
Retirement Projects Galore
Edmonton, Alberta
_______________________________________________
GMCnet mailing list
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http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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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] Ride Height on 23 Foot without Frame Slots? [message #265757 is a reply to message #265739] |
Mon, 10 November 2014 03:47 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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On Sun, Nov 9, 2014 at 2:30 PM, Robert Mueller
wrote:
> John,
>
> See MM X-7525 / Section 4 - REAR SUSPENSION / Page 4-34 / Figure 70 -
> Checking Vehicle Ride Height
>
>
and read here for more info
http://thedovetailjoint.squarespace.com/storage/GMC%20alignment%20in%20Nine%20Easy%20Steps%20V1.0.pdf
erf
> Note that the figure provides the location of the rear slots for both the
> 23' and 26' models.
>
> You can calculate the ride height from the bottom of the frame using the
> following photographs:
>
>
> http://www.gmcmhphotos.com/photos/aa-miscellaneous-photos/p40039-front-height-adjustmen.html
>
> IIRC the bolts shown have a 3/4" head and the ride height slot sure looks
> the same.
>
>
> http://www.gmcmhphotos.com/photos/aa-miscellaneous-photos/p40040-rear-height-adjustment.html
>
> Regards,
> Rob M.
> Sydney, Australia
> AUS '75 Avion - The Blue Streak TZE365V100428
> USA '75 Avion - Double Trouble TZE365V100426
>
>
> -----Original Message-----
> From: Gmclist [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of John
> Heslinga
> Sent: Monday, November 10, 2014 4:04 AM
> To: gmclist@temp.gmcnet.org
> Subject: [GMCnet] Ride Height on 23 Foot without Frame Slots?
>
> Hello All:
>
> I'm installing a one ton for a fellow GMCer on a 23 foot. The unit has
> new frame rails without slots in front and rear.
>
> I do not have another coach close to measure where they were on the frame
> to compare.
>
> Question is: Does anyone know the ride heights for the 23 foot from
> ground to the bottom of the frame rails?
>
> I remember the discussion somewhere but now I can't find it.
> Best Regards
>
> --
> John and Cathie Heslinga
> 1974 Canyonlands 260
> 455, Manny tranny and 1 ton, 3:73 LS,
> TC4W "Too Cool For Words"
> Retirement Projects Galore
> Edmonton, Alberta
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
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: Ride Height on 23 Foot without Frame Slots? [message #265759 is a reply to message #265724] |
Mon, 10 November 2014 05:22 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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John Heslinga wrote on Sun, 09 November 2014 11:04Hello All:
I'm installing a one ton for a fellow GMCer on a 23 foot. The unit has new frame rails without slots in front and rear.
I do not have another coach close to measure where they were on the frame to compare.
Question is: Does anyone know the ride heights for the 23 foot from ground to the bottom of the frame rails?
I remember the discussion somewhere but now I can't find it.
Best Regards
Ride height wood blocks.
front 9 7/8"
Rear 8 7/16
I cut the front pair out of 2x2's and the pair rear out of 2x4's. That way they do not get mixed up. On the ones we make for weighing coaches at rallies I mark every 1/4" from the top down for about 1.5 inches so we can easily read the ride heights as the wheels approach the scales.
For your use just cut 4 blocks of the above sizes and slide them under the frame. The is no need to mark the 1/4" divisions unless you want to.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: Ride Height on 23 Foot without Frame Slots? [message #265766 is a reply to message #265724] |
Mon, 10 November 2014 09:28 |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma: 4
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Senior Member |
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Thanks a million everyone!
Using the measurements, I'm going to make measurement blocks. That way I'll always have them as a tool. I have Jerry Work's alignment tools, but they are intended for frame slots. I can add the measurement blocks to his kit to make it that much more versatile.
Yahoo!! One more tool in the tool box!!! 
Great ideas!!!
Best regards
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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| Re: [GMCnet] Ride Height on 23 Foot without Frame Slots? [message #265771 is a reply to message #265766] |
Mon, 10 November 2014 10:00 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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I use a combination of gages for ride height. For the rears, I use jack
stand like gages that go under the frame rails. Because of the
reinforcements to the frame rail on the drivers side generator compartment,
the oval slot is not visible. I always set the rear ride height first and
place the gages under the rear frame, leaving them in place until I have
made the front adjustments. The front gages I use are made to sit on the
floor and extend upward beside the frame slot. That way, when I install the
torsion bar tool and tighten it down, I can see the results while I make
the adjustments. Then I catch up with the tool with the height adjustment
bolts and quit while I'm ahead. A quick check on the rear gages, and I'm
done. A note of caution here, NEVER TRY TO RAISE OR LOWER THE FRONT RIDE
HEIGHT WITHOUT USING THE TORSION BAR UNLOADER. YOU WILL STRIP OUT THE
ADJUSTER NUTS AND/OR BOLTS IF YOU DO.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Nov 10, 2014 7:28 AM, "John Heslinga" wrote:
> Thanks a million everyone!
>
> Using the measurements, I'm going to make measurement blocks. That way
> I'll always have them as a tool. I have Jerry Work's alignment tools, but
> they are intended for frame slots. I can add the measurement blocks to
> his kit to make it that much more versatile.
> Yahoo!! One more tool in the tool box!!! :)
>
> Great ideas!!!
>
> Best regards
> --
> John and Cathie Heslinga
> 1974 Canyonlands 260
> 455, Manny tranny and 1 ton, 3:73 LS,
> TC4W "Too Cool For Words"
> Retirement Projects Galore
> Edmonton, Alberta
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] Ride Height on 23 Foot without Frame Slots? [message #265772 is a reply to message #265771] |
Mon, 10 November 2014 10:35 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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Jim, The reason I make the rear measurement block out of 2x4's is I can use them for measurements, or I can use them to block the rear at the correct height. All I do is air up the bags slightly, insert the 2x4's and then drop the air in the bags some small amount until some of weight is resting on both rear blocks.
Now you can make adjustments to the front torsion bars without worrying about any up-down movement on the rear.
When you get done, air up the bag, slightly to remove the blocks. Then take it for a ride. The leveling switches will self adjust the rear to where they belong reguardless of any weight change.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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