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Old 09-09-2017, 02:32 PM   #1
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Safe way to remove all 4 wheels?

We have a 2018 30' Classic on order and I want to be able to install a Ford TPMS kit which will interface with the factory display on a 2017 F250. To be installed, the Ford TPMS valve stems require that the trailer tires be dismounted.

Is there a safe procedure for removing all 4 trailer wheels at one time? Using the spare and a Trailer-Aid tire changing ramp I can take off two wheels at a time but that means 2 trips to the tire shop. I was wondering if there are other options although the last thing I want to do is risk damaging myself or my new trailer so if it takes two trips, so be it.

FWIW, I have a couple of 2 ton automotive jacks and 4 Jackpoint jack stands which are each rated for 4000 lbs. Thoughts or suggestions?
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Old 09-09-2017, 02:49 PM   #2
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I would use two jack stands rated for 1/2 weight of trailer between the axles on the axle mounting plate, plus the front tongue jack. Three points determine a plane. Trying to use two lesser jack stands on each side isn't a good idea since one stand can take all the weight if the tongue is lifted a little bit.

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Old 09-09-2017, 03:28 PM   #3
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Hi

Can it be done safely? Sure.

Is it a real good idea? Maybe not.

How far is the shop?

The trailer "sags" away from the point(s) it is supported. Change those points and the trailer flexes and stretches. When doing a normal tire change, this does not go on for long. Leaving it in an unusual state for quite a while can create odd issues (think rivets popping....).

Bob
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Old 09-09-2017, 03:45 PM   #4
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Originally Posted by uncle_bob View Post
Hi

Can it be done safely? Sure.

Is it a real good idea? Maybe not.

How far is the shop?

The trailer "sags" away from the point(s) it is supported. Change those points and the trailer flexes and stretches. When doing a normal tire change, this does not go on for long. Leaving it in an unusual state for quite a while can create odd issues (think rivets popping....).

Bob
I live a ways outside of town but it's not too bad and, as I said, I don't want to take unnecessary risks.

What do you mean by "quite a while"? Using the spare and the Trailer-Aid changing ramp I'd be leaving one side of the trailer on a single wheel for 2 or 3 hours while I run two wheels into town and have the work done. Should I provide additional support for that side of the trailer in the meantime and if so what would be the best way to do that? Thanks.
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Old 09-09-2017, 03:56 PM   #5
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Hi

The basic problem is that there are two easy ways to support the trailer. You put it on the wheels or you put it on the jack points. Anything else is a bit complicated. If you put it on the jack points, listen to the trailer "squeak" at you. Fifteen or twenty minutes is normal for changing a tire. Will three hours create an issue? Nobody knows until they try it on their specific trailer. Will there be catastrophic damage? Certainly not. Might you have an extra leak or three to deal with? yup ...

Bob
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Old 09-09-2017, 08:39 PM   #6
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The wheels & tires come off every Fall.....Stored this way since new.

Supported by two jack stands between the wheels & the tongue jack.

Jack up on the axle plate...no chance of sliding off the marked AS "jack point".

Bob
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Old 09-10-2017, 12:23 PM   #7
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Sounds like you're getting a brand new AS from a dealer. Congrats!

Why not send the TPMS kits to them to install even before you pick up the trailer?
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Old 09-10-2017, 12:56 PM   #8
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The axle mounting plate doesn't flex appreciably. Whether the trailer is on two axles or a jack stand between the two axles doesn't make a bit of difference to how the trailer is loaded. You will not damage your trailer by putting it on jack stands under the axle plates unless you or an earthquake manages to knock it off the stands.

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Old 09-10-2017, 02:27 PM   #9
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Originally Posted by GammaDog View Post
Sounds like you're getting a brand new AS from a dealer. Congrats!

Why not send the TPMS kits to them to install even before you pick up the trailer?
Thanks!

I did ask. My dealer says they don't dismount/mount tires.
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Old 09-10-2017, 02:31 PM   #10
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Quote:
Originally Posted by barts View Post
The axle mounting plate doesn't flex appreciably. Whether the trailer is on two axles or a jack stand between the two axles doesn't make a bit of difference to how the trailer is loaded. You will not damage your trailer by putting it on jack stands under the axle plates unless you or an earthquake manages to knock it off the stands.

- Bart
Thanks Bart....
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Old 09-10-2017, 07:08 PM   #11
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I bought a Tire Minder TPMS that uses the xmttrs. On the valve stems.
Base Stn. In TV. On glare shield.
Half an hour into the first trip, it 'yeĺled' low pressure. Picked up a screw in a tire.
That $400+ thing just saved me several thousand in damage.��
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Old 09-10-2017, 07:23 PM   #12
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There is a post that indicates, AS balances brakes, tires, wheels all together. So the dealer may be concerned that un-mounting and remounting may shift the balance. Solution is to install Centramatics, but a good tire shop may be able to return tire to same position and balance out the added weight from the TPMS sensor addition. Pat
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Old 09-10-2017, 07:39 PM   #13
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Quote:
Originally Posted by PKI View Post
There is a post that indicates, AS balances brakes, tires, wheels all together. So the dealer may be concerned that un-mounting and remounting may shift the balance. Solution is to install Centramatics, but a good tire shop may be able to return tire to same position and balance out the added weight from the TPMS sensor addition. Pat
Good to know. I've got a great tire guy; I'll talk to him about it.
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Old 09-11-2017, 08:05 AM   #14
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Quote:
Originally Posted by PKI View Post
There is a post that indicates, AS balances brakes, tires, wheels all together. So the dealer may be concerned that un-mounting and remounting may shift the balance. Solution is to install Centramatics, but a good tire shop may be able to return tire to same position and balance out the added weight from the TPMS sensor addition. Pat
Any good tire shop will mark tire at stem location then balance if TPMS is added
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