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don't jack up trailer by suspension? #4631359
01/11/18 11:31 AM
01/11/18 11:31 AM
Joined: Nov 2009
Posts: 5,123
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 5,123
Houston, Texas
Why do trailer manufacturers say this? I like to put the jack right under the equalizer. Works great assuming the trailer is chocked and you put it in the middle so it doesn't slide off. This method allows me to raise both tires at the same time.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: don't jack up trailer by suspension? [Re: motor_oil_madman] #4631369
01/11/18 11:36 AM
01/11/18 11:36 AM
Joined: Dec 2016
Posts: 7,132
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,132
Waco, TX
I always just jack under the axle itself on the one tire I want to remove & replace.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: don't jack up trailer by suspension? [Re: Linctex] #4631411
01/11/18 12:05 PM
01/11/18 12:05 PM
Joined: Jun 2008
Posts: 5,411
In the Garage...
ls1mike Offline
ls1mike  Offline
Joined: Jun 2008
Posts: 5,411
In the Garage...
Originally Posted By: Linctex
I always just jack under the axle itself on the one tire I want to remove & replace.


I do too. I am not sure of the reasoning as the axle sees similar stresses going down the road.
Perhaps they are afraid it will slip off and someone will get hurt?


Mike
00 Trans Am WS6 5.7 LS1
02 Silverado 2500HD 6.0
14 Caprice PPV 6.0
15 Malibu LTZ Turbo
12 Passport TT
Re: don't jack up trailer by suspension? [Re: motor_oil_madman] #4631471
01/11/18 01:01 PM
01/11/18 01:01 PM
Joined: Feb 2013
Posts: 11,081
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 11,081
Phoenix, AZ
As long as you don't have 5,000+ pounds on the trailer it's probably fine.


2015 Hyundai Sonata 2.4L 88k Motorcraft Synthetic Blend 5w30 & OEM
2000 Toyota Camry 2.2L 231k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: don't jack up trailer by suspension? [Re: motor_oil_madman] #4631491
01/11/18 01:22 PM
01/11/18 01:22 PM
Joined: Nov 2009
Posts: 5,123
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 5,123
Houston, Texas
I don't see putting it on the frame either. Most are just cheap angle iron.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: don't jack up trailer by suspension? [Re: motor_oil_madman] #4631622
01/11/18 03:56 PM
01/11/18 03:56 PM
Joined: Jan 2017
Posts: 196
Michigan
64bawagon Offline
64bawagon  Offline
Joined: Jan 2017
Posts: 196
Michigan
Everything under an RV is the lightest and cheapest they can legally get away with.


05 Duramax Chevy(SOLD), 64 Chevy wagon, 10 Jeep Wrangler, 17 Equinox (rental), 18 Silverado 1/2 ton
Re: don't jack up trailer by suspension? [Re: motor_oil_madman] #4631654
01/11/18 04:41 PM
01/11/18 04:41 PM
Joined: Oct 2014
Posts: 4,039
Utah
CKN Offline
CKN  Offline
Joined: Oct 2014
Posts: 4,039
Utah
If you put it under the frame and it slips off you will have a hole in your floor. The SOP is to put it under the axle near the clamps for the springs.

Re: don't jack up trailer by suspension? [Re: motor_oil_madman] #4631740
01/11/18 06:22 PM
01/11/18 06:22 PM
Joined: Aug 2003
Posts: 13,137
NE,Ohio
Rand Online content
Rand  Online Content
Joined: Aug 2003
Posts: 13,137
NE,Ohio
probably also depends on if its got a full load or empty.

just doing maintenance its not super important as long as its in a sturdy location.

Doing a tire replacement with a max load... a little different dont want to bend anything.


2019 Jeep Cherokee Trailhawk 2.0T
Re: don't jack up trailer by suspension? [Re: Rand] #4631807
01/11/18 07:31 PM
01/11/18 07:31 PM
Joined: Oct 2014
Posts: 4,039
Utah
CKN Offline
CKN  Offline
Joined: Oct 2014
Posts: 4,039
Utah
Originally Posted By: Rand
probably also depends on if its got a full load or empty.

just doing maintenance its not super important as long as its in a sturdy location.

Doing a tire replacement with a max load... a little different dont want to bend anything.



By your comment I can tell you don't own a recreational travel trailer. It needs to get jacked up by the axle regardless.

Last edited by CKN; 01/11/18 07:31 PM.
Re: don't jack up trailer by suspension? [Re: motor_oil_madman] #4631817
01/11/18 07:39 PM
01/11/18 07:39 PM
Joined: Apr 2016
Posts: 1,198
Campbellsville, KY
Alex_V Offline
Alex_V  Offline
Joined: Apr 2016
Posts: 1,198
Campbellsville, KY
Under the shackle plate is my choice if I can get to it. If an unloaded, light trailer the cast link between the two springs is more than adequate.


To quote a friend, "Synthetics, man."

'85 GMC C3500, 454, 132K
'82 Mercedes 300CD, OM617 turbo, 173K (totaled 2018, in rehab)
'85 Mercedes 300TD, OM617 turbo, 217K (wife's)
'67 Suburban, 350, 331K
Re: don't jack up trailer by suspension? [Re: motor_oil_madman] #4632154
01/12/18 06:52 AM
01/12/18 06:52 AM
Joined: Mar 2004
Posts: 21,105
Upstate NY
Donald Offline
Donald  Offline
Joined: Mar 2004
Posts: 21,105
Upstate NY
Well the easiest if you have dual wheels is to run one tire up onto a 2x4 and the other wheel will be off the ground.

If you try and jack up the frame you will lift the frame a lot taking weight off springs but may not get wheel off the ground before max lift for jack.

I jack under axle or leaf spring next to it.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: don't jack up trailer by suspension? [Re: motor_oil_madman] #4632188
01/12/18 08:01 AM
01/12/18 08:01 AM
Joined: Feb 2007
Posts: 3,699
Southeast
meep Offline
meep  Offline
Joined: Feb 2007
Posts: 3,699
Southeast
I've always jacked at the axle as close to the spring as I can get.

BUT- I've also read NOT to lift by the axle because it is in itself a spring, designed to flex for camber - and therefore not the strongest of places to support a point load such as a jack. So I certainly don't put the jack anywhere inboard.

-Meep


2018 F150
2015 crv (wifey!)

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