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08-28-2012, 04:35 AM
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#1
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Montana Master
Join Date: Oct 2009
Location: Navarre
Posts: 1,527
M.O.C. #9765
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Tires in the Air
Riddle me this O great MOC suspension wizards. There is a seasonal (5 months) 2011 Montana here that the owner jacks up and places jack stands under the axles about a foot from the springs. He says he does the same a home. He does this after leveling. No harm No foul?????? Kind of blows what I thought about jacking the axles.
Mike
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08-28-2012, 05:35 AM
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#2
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Montana Master
Join Date: Aug 2008
Location: New Bern
Posts: 4,370
M.O.C. #8728
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If he's jacking the part of the axle that's hollow, he can bend it. I jack between the spring shackles where the axle is solid.
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08-28-2012, 06:32 AM
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#3
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Montana Master
Join Date: Dec 2005
Location: Eugene
Posts: 1,053
M.O.C. #5091
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He better be checking his tires for excessive wear. Jacking and supporting his axles will probably bend the axles as mentioned and cause excessive tire wear fairly quickly. Obviously this person hasn't heard of the Montana Forum and the wealth of information on it.
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08-28-2012, 06:50 AM
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#4
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Montana Master
Join Date: Feb 2007
Location: Winfield
Posts: 7,327
M.O.C. #6846
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The other issue is if he is jacking the axles and is only using the front legs and rear stabilizers for support, he is stressing the frame in a way that I would think it is not designed for (bending). If he is blocking or supporting the frame before and after the axles, and only taking the weight off of the axles, he should be fine, since that is no different than changing a flat (the safe way!). If he is supporting the interior weight of the rig by point loading the axle tubes, he well may be causing damage to the axles as previously mentioned. All of the above does not take into account the old stand-by: "but I have always done it that way!"
Bingo
__________________
Bingo and Cathy - Our adventures begin in the hills of WV. We are blessed by our 2014 3850FL Big Sky (previous 2011 3750FL and 2007 3400RL) that we pull with a 2007 Chevy Silverado Classic DRW CC dually.
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08-28-2012, 08:32 AM
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#5
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,154
M.O.C. #6433
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I assume he thinks he is saving his tires by eiminating any stress on them or by eliminating contact with the ground? 
Like the others, I think he is just asking for problems.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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08-28-2012, 08:52 AM
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#6
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Montana Master
Join Date: Jan 2005
Location: North Ridgeville
Posts: 20,229
M.O.C. #2839
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He is doing a bad thing but you will never talk him out of it.
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08-28-2012, 09:20 AM
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#7
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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I bet he has supports under the slides too! 
__________________
2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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08-28-2012, 12:27 PM
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#8
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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There's a rig no one should buy used.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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08-28-2012, 01:09 PM
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#9
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Montana Master
Join Date: Jul 2006
Location: K.C.
Posts: 11,731
M.O.C. #5980
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If it is a foot from the springs, my money is that it is not too bad on it, that is close to the support, but I would not do it, why not just go to the spprings and support the weight there...
JMHO
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08-28-2012, 02:00 PM
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#10
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Montana Master
Join Date: Oct 2009
Location: Navarre
Posts: 1,527
M.O.C. #9765
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Quote:
quote:Originally posted by Ozz
If it is a foot from the springs, my money is that it is not too bad on it, that is close to the support, but I would not do it, why not just go to the spprings and support the weight there...
JMHO
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He places the bottle jack under the springs to raise the tire off the ground.
Bingo, nothing under the frame.
He does support the slides also.
Mike
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08-28-2012, 02:04 PM
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#11
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Montana Master
Join Date: Nov 2007
Location: Atlanta
Posts: 908
M.O.C. #7915
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Maybe a dumb solution, but I'd do it the way it says to in the owner's manual.
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08-28-2012, 05:34 PM
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#12
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Montana Master
Join Date: Feb 2005
Location: Haysville
Posts: 4,261
M.O.C. #3085
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I just can't keep it buttoned here ... you'll put WAY more stress on your fiver jacking the whole thing up by the frame (barring a level up system) ... there's absolutely no harm in jacking directly under the springs as that is where the weight is supported anyways. I'm still on the fence about the whole jack stand thing ... the main purpose of referencing frame jacking is the manufacturer's attempt to advert "Joe Average" from trying to put a jack right under the middle of the axle of a #12,000 RV and pumping away ... 
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08-29-2012, 10:53 AM
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#13
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Montana Master
Join Date: Jan 2005
Location: Goshen
Posts: 1,058
M.O.C. #2827
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YIKES! I picture crushed spring packs and bent slide room inner tubes eventually. Especially if a stand under one of the axles slips......there will be slide room damage for sure!
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