| Re: [GMCnet] Jacking up the coach at the Bogies [message #345286 is a reply to message #345264] |
Sun, 14 July 2019 15:16   |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma:
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Senior Member |
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Dolph,
Depends: If I just want to get clearance under the frame, I just jack 'er
up. But if I want to get a tire off of the ground, I take the weight with
the jack, install my 3/8"x3"x12" arm lifting bar beneath the suspension
arms & on top of the bottom of the bogie, and let the air out of the bags.
The tires then lift off the ground right away. Letting the air out is
IMPORTANT: I've got one of those 3/8" thick steel bars with a nice curve
in it -- one of our regulars here jacked up with it installed without
dumping the air. :-( I've also got a bogie with the bottom broken where
one of our deceased members did something similar on his coach. Lots of
force in those arms (as a WAG, they can exert about 1800# weight X Arm
length / Distance pin to contact = 1800# X 15 / 3 = 9000 lbf on the bottom
of the bogie).
Ken H.
On Sun, Jul 14, 2019 at 1:00 PM Dolph Santorine via Gmclist <
gmclist@list.gmcnet.org> wrote:
> I’ve always let the air pressure out of the bags before jacking the coach
> up at the bogies.
>
> A number of folks I know don’t do this.
>
> Am I adding an unnecessary step?
>
> What do you do?
>
> Thanks.
>
>
> Dolph
>
> DE AD0LF
>
> Wheeling, West Virginia
>
> 1977 26’ ex-PalmBeach
> Howell EFI & EBL, Reaction Arms, Manny Transmission
>
> “The Aluminum and Fiberglass Mistress"
>
> _______________________________________________
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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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