Jacking up the GMC

voyager

New member
Nov 28, 1998
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FWIW,
When I had My GMC up on jackstands, I worked under it feeling
safe, Then I jacked up one corner to start lowering it, the
jack stand on the other side in front bent in half....Use HEAVY
duty jackstands if Your going to get under the coach, And only on
CONCRETE, Asphalt is NOT a hard surface. I was on concrete when
the jack stand gave out...
Rob Teed 74 Painted Desert
> -----Original Message-----
> From: owner-gmcmotorhome
> [mailto:owner-gmcmotorhome]On Behalf Of MR EUGENE R
> FISHER
> Sent: Tuesday, March 16, 1999 6:02 AM
> To: gmcmotorhome
> Subject: GMC: Jacking up the GMC
>
>
> -- [ From: Eugene Fisher * EMC.Ver #2.5.3 ] --
>
> While I was talking to Tom Bradley yesterday about where to find the
> Jack Pad / Jack Hook. (see web page). He reminded me the best way to
> work on the bottom of the GMC for us PWOP's . ( People With Out Pits) is
> to build ramps of stacked 2 X 6 boards. Mine are 3 high which will
> raise the GMC something less than 6 inches which with he 4 inches the
> air bags will raise, will allow you to get under the rig safely. You
> can then place the jack stands under the frame for added safety or use
> the old reliable 6 inch by 8 inch block under the bogie support.
>
> Using this method you can
> Drain the gas tanks ( raise the driver side)
> Drop the gas tanks for hose replacement
> repair the Black tank
> Replace the Iso pads on the frame
> Add the booster electric fuel pump.
> Drop the radiator
> Add the Macerator poop pump
> etc
> Lots of good stuff to do under the ole-GMC for us pit-less folks.
>
> Jacking up the GMC is problematical.
> The frame often gets bent
> The Jacks slip
> The fame gets twisted
> You need a really big jack
> it is really not very safe under a GMC on jack stands
> almost impossible to jack on dirt or gravel
>
> Seems like I often forget the easy way to do things.
>
> gene
> --
> Gene 76Palm Beach /Or/CA
>
> GMC Technical Information
> http://www.california.com/~eagle/
>
 
Good advice. I'm in a steel fabrication related business and have several
18" long sections of HEAVY wide flange beam I set this sucker on. And a
good set of WHEEL CHOCKS make a lot of sense. Nothing could spoil your day
like an 11,000# motorhome perched on your chest. Before I'd trust myself to
some of even those "Heavy Duty" jack stands, I'd haul myself down to a local
steel fabrication shop. They'd probably sell you 18" deep wide flange
"drops" out of their dumpster at scrap prices.
Dick Bachert
75 PB in Atlanta

>FWIW,
> When I had My GMC up on jackstands, I worked under it feeling
> safe, Then I jacked up one corner to start lowering it, the
> jack stand on the other side in front bent in half....Use HEAVY
> duty jackstands if Your going to get under the coach, And only on
> CONCRETE, Asphalt is NOT a hard surface. I was on concrete when
> the jack stand gave out...
> Rob Teed 74 Painted Desert
>> -----Original Message-----
>> From: owner-gmcmotorhome
>> [mailto:owner-gmcmotorhome]On Behalf Of MR EUGENE R
>> FISHER
>> Sent: Tuesday, March 16, 1999 6:02 AM
>> To: gmcmotorhome
>> Subject: GMC: Jacking up the GMC
>>
>>
>> -- [ From: Eugene Fisher * EMC.Ver #2.5.3 ] --
>>
>> While I was talking to Tom Bradley yesterday about where to find the
>> Jack Pad / Jack Hook. (see web page). He reminded me the best way to
>> work on the bottom of the GMC for us PWOP's . ( People With Out Pits) is
>> to build ramps of stacked 2 X 6 boards. Mine are 3 high which will
>> raise the GMC something less than 6 inches which with he 4 inches the
>> air bags will raise, will allow you to get under the rig safely. You
>> can then place the jack stands under the frame for added safety or use
>> the old reliable 6 inch by 8 inch block under the bogie support.
>>
>> Using this method you can
>> Drain the gas tanks ( raise the driver side)
>> Drop the gas tanks for hose replacement
>> repair the Black tank
>> Replace the Iso pads on the frame
>> Add the booster electric fuel pump.
>> Drop the radiator
>> Add the Macerator poop pump
>> etc
>> Lots of good stuff to do under the ole-GMC for us pit-less folks.
>>
>> Jacking up the GMC is problematical.
>> The frame often gets bent
>> The Jacks slip
>> The fame gets twisted
>> You need a really big jack
>> it is really not very safe under a GMC on jack stands
>> almost impossible to jack on dirt or gravel
>>
>> Seems like I often forget the easy way to do things.
>>
>> gene
>> --
>> Gene 76Palm Beach /Or/CA
>>
>> GMC Technical Information
>> http://www.california.com/~eagle/
>>
>