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04-30-2016, 06:35 AM
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#1
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Site Team
Join Date: Dec 2007
Location: WI.
Posts: 9,160
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Raising the trailer
They tell us not to raise our trailer by jacking under the axle. Then they come along with something like this. 
How to Avoid Flat Spots on your Trailer Tires - RV Life
Maybe that is for units made by some other outfit that has thicker wall axles?? 
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04-30-2016, 09:12 AM
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#2
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Full Time Camper
Join Date: Apr 2006
Location: 1
Posts: 2,036
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I think flat spots were more of an issue with bias ply tires. The newer radial style is less prone to flat spots. That link is interesting but I agree, it does stress the axle tube. Of course the best way to prevent flat spots is to use the RV every weekend!
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04-30-2016, 06:06 PM
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#3
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Full Time Camper
Join Date: Aug 2012
Location: Belle River , Ontario
Posts: 1,753
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Probably made when axles were actually made thicker.
__________________
It was a rainy few days at Algonquin Prov park...tarps kept us dry.
Wayne --Belle River (Windsor), Ontario
2013 Sunset Trail Reserve 25RB..(just sold it)
2015 White Chev Silverado 2500HD 4x4 (6.0 l gasser)
2003 Mountain Star 890SBRX Truck Camper
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04-30-2016, 06:20 PM
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#4
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Family Vacation Member
Join Date: Feb 2016
Location: ky
Posts: 120
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That's how they do the tire aligament by bending the axle,so if jack it up under the axle you could knock it out of aligament.
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 Jim & Susie, 2014 Redwood 36 FL, 2012 F-250 6.2, Trailer Saver TS3,MORryde I.S. with disc brakes
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04-30-2016, 08:02 PM
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#5
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Seasonal Camper
Join Date: Mar 2014
Location: MA
Posts: 315
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Axles dont bend if you lift them close to the leaf shackles.
If they did, they would bend under pressure from the leaf spring shackles.
Big misconception about lifting unit from under the axles.
__________________
Retired U.S. Navy Engineer
2020 Ram 2500 Bighorn 6.7 Diesel
2014 Zinger 27RL (Traded)
2022 Grand Design Reflection 315RLTS
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04-30-2016, 10:23 PM
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#6
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Gone Traveling
Join Date: Feb 2016
Location: Texas
Posts: 1,392
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Have used jacks on mine for years, just be sure to place the jack directly under the spring pack not out in the middle of the axle tube.
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05-01-2016, 06:13 AM
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#7
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Family Vacation Member
Join Date: Feb 2016
Location: ky
Posts: 120
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Quote:
Originally Posted by travelin texans
Have used jacks on mine for years, just be sure to place the jack directly under the spring pack not out in the middle of the axle tube.
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Why not just use your level-up? When I put my G614's on it lifted one side at a time, I support the axle with a jack when doing bearnings or brakes.
__________________
Jim & Susie, 2014 Redwood 36 FL, 2012 F-250 6.2, Trailer Saver TS3,MORryde I.S. with disc brakes
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05-01-2016, 08:57 AM
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#8
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Full Time Camper
Join Date: May 2012
Location: N.C. Mountains
Posts: 2,415
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I've always jacked up Tt, 5ers, etc. by placing jack under jack spring. If you couldn't jack them up you could never change the tires. I always jack mine up and put on jack stands after the last camping trip of the season until spring. Not sure if it helps the tires but that's just how I've always done it.
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*2016 CAF25SE Cruiser Aire 5er. *2020 Chevrolet 2500 HD Custom
*Ted & Tricia (Mimi - Teacup Poodle/ Sailor - Maltipoo)
*I have tried to live my life so that my family would love me and my friends would respect me. The others can do whatever the Hell they please!” —John Wayne
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05-01-2016, 10:29 AM
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#9
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Full Time Camper
Join Date: May 2011
Location: So. Cal.
Posts: 577
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I feel comfortable to jack up under the leaf spring bolts or at the shock mount under the axle. I won't jack up on the axle tube unless I've raised the other two tires up on blocks, to unload the majority of weight.
__________________
Bob and Better Half
2007 F-250 PSD, SW, CC, LB, 2WD
2006 TF32SS Cross Terrain Toy Hauler (sold)
Reese 16k slider
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05-01-2016, 10:58 AM
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#10
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Gone Traveling
Join Date: Feb 2016
Location: Texas
Posts: 1,392
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Quote:
Originally Posted by superduty glampers
Why not just use your level-up? When I put my G614's on it lifted one side at a time, I support the axle with a jack when doing bearnings or brakes.
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Jim, now that I have one with the level up I can use it to raise the coach, but didn't have that luxury in the past. I still use jacks under the axles to keep from flipping the shackles.
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