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| Re: [GMCnet] GMC on two post lift! [message #238324 is a reply to message #238259] |
Sat, 01 February 2014 00:33   |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
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Senior Member |
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Regardless of lift capacity, I wouldn't do it unless the stern was empty inside and there was no water, sewage, or Onan aboard!
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
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| Re: [GMCnet] GMC on two post lift! [message #238337 is a reply to message #238259] |
Sat, 01 February 2014 06:33 |
Steve
Messages: 506
Registered: September 2013
Location: East Greenville, Pa
Karma: 1
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I see it. But I don't like it.
Nice coach.
1978 GMC Royal
Eastern Pennslyvania
1968 Chevrolet C20 396 Camper Special
1969 Chevrolet C20 Camper Special
1985 Buick Electra Park Avenue
1992 Camaro 25th Anniversary Heretage Edition Black
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| Re: [GMCnet] GMC on two post lift! [message #238343 is a reply to message #238259] |
Sat, 01 February 2014 07:46 |
Oldngray
Messages: 544
Registered: August 2009
Location: Punta Gorda Florida
Karma: 0
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Senior Member |
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Rob, that is my Coach. I was removing the Fuel tanks and replacing all of the fuel lines, I use the lift whenever I have a need. Sure makes it easy to work on everything under there.
Richard MacDonald
Punta Gorda, Florida
Sold our TZE April 2015
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| Re: [GMCnet] GMC on two post lift! [message #238347 is a reply to message #238343] |
Sat, 01 February 2014 08:34 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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That would be great to have -- but if I was using it, I'd have a couple of
joist jacks, one under each end to prevent rocking about that center lift.
Something like:
http://www.homedepot.com/p/Tiger-Brand-Super-S-8-ft-4-in-Jack-Post-J-S-100/100022783?N=5yc1vZaqzs
JWID,
Ken H.
On Sat, Feb 1, 2014 at 8:46 AM, Richard MacDonald wrote:
>
>
> Rob, that is my Coach. I was removing the Fuel tanks and replacing all of
> the fuel lines, I use the lift whenever I have a need. Sure makes it easy
> to work on everything under there.
>
> --
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] GMC on two post lift! [message #238375 is a reply to message #238343] |
Sat, 01 February 2014 11:55 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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What type of footing are the posts on?
Todd Sullivan
Sully
77 royale
Seattle
> On Feb 1, 2014, at 5:46 AM, Richard MacDonald <rm1936@gmail.com> wrote:
>
>
>
> Rob, that is my Coach. I was removing the Fuel tanks and replacing all of the fuel lines, I use the lift whenever I have a need. Sure makes it easy to work on everything under there.
>
> --
> Richard MacDonald
> Punta Gorda, Florida
> 76 Edgemonte TZE 266V102313
> Howell TBI EBL
>
>
> _______________________________________________
> GMCnet mailing list
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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] GMC on two post lift! [message #238398 is a reply to message #238343] |
Sat, 01 February 2014 15:37 |
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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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Richard,
You're as lucky as me, I have access to a four wheel lift in Sydney and JohnS and I have one in Humble.
Regards,
Rob M.
Sydney, Australia
-----Original Message-----
From: Richard MacDonald
Rob, that is my Coach. I was removing the Fuel tanks and replacing all of the fuel lines, I use the lift whenever I have a need.
Sure makes it easy to work on everything under there.
Richard
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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] GMC on two post lift! [message #238443 is a reply to message #238436] |
Sat, 01 February 2014 23:13 |
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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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Mac,
It appears there are 2 x 4's (?) between the rear pads and the frame.
http://www.gmcmhphotos.com/photos/showfull.php?photo=34176
http://www.gmcmhphotos.com/photos/showfull.php?photo=34177
As far as not doing it from where I sit as long as the lift has the capacity 15K and the load is balanced why not?
BTW the photo makes it look like the back is low, HOWEVER, note that the lift is NOT 90° perpendicular in the photo.
Here's an edited version, sure looks like the coach is level to me!
http://www.gmcmhphotos.com/photos/random-photos/p52751-two-post-lift.html
Richard, I reckon YOU'RE the only guy that KNOWS how steady the GMC was on the lift please comment.
Regards,
Rob M.
-----Original Message-----
From: D C _Mac_ Macdonald
Didn't the pic show that there were LONG flat steel plates that spread the load over six or more feet?
D C
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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] GMC on two post lift! [message #238444 is a reply to message #238436] |
Sat, 01 February 2014 23:17 |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
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Senior Member |
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Any load spreading foot would require a 3 inch or better I beam extending to just behind the bogie mount on the frame. I don't see it in the pics. If the lift was able to engage the bogie mounts and the front frame near the suspension mounts, that would be the equivalent of the normal support from the suspension. Anything else on these vehicles results in flexure of the frame and body and resultant creaks and leaks.
If I jack up just the front of mine equally on both sides with 2 jacks at the front frame attachment junction (right behind the front wheels)without jacking up the first crossmember also, the door won't close without binding the latch.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
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| Re: [GMCnet] GMC on two post lift! [message #238482 is a reply to message #238444] |
Sun, 02 February 2014 10:07 |
Oldngray
Messages: 544
Registered: August 2009
Location: Punta Gorda Florida
Karma: 0
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Senior Member |
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Rob,
This is a Rotary SPO15, 15000# lift. We have had our Coach on that lift at least 10 times. Do use some 2x's to spread the load on the rear frame. Also the lift points used are where the frame rails are doubled. In the latest picture, looking at the slab section that the posts are attached to, (do not have the dimensions in my head, believe more than 4 ft from joint to joint) that footer is 12 inches thick and it runs across the entire slab. The J bolts are attached to nbr 5 rods on the bottom of the footer.
Stability has not been a issue, I have been in and out of the Coach while elevated,( weigh 210+) the door opens and closes normally. There is some flex while elevated but nothing that causes any concern.
I believe Sirum GMC also uses a two post lift at their shop.
Interesting discussion.
Richard MacDonald
Punta Gorda, Florida
Sold our TZE April 2015
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| Re: [GMCnet] GMC on two post lift! [message #238493 is a reply to message #238482] |
Sun, 02 February 2014 11:27 |
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Loffen
Messages: 1087
Registered: August 2013
Location: Norway
Karma: 1
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Senior Member |
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Richard, there was a discussion a couple of months back regarding what would be best of a pit or a four post lift, I did mention a 2 post lift and after some discussion I had to go back on it (I am actually still a bit sceptical after taking a close look at my GMC)
And then Rob comes with pictures of yours.. 
1973 23' # 1848 Sky Blue Glacier called Baby Blue and a 1973 26'-3 # 1460 Parrot green Seqouia Known as the Big Green,
And sold my 1973 26'-2 # 581 White Canyon lands under the name Dobbelt trøbbel
in Norway
[Updated on: Sun, 02 February 2014 11:33] Report message to a moderator |
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