Advice needed on trailer repair

   / Advice needed on trailer repair #1  

jlawso21

Bronze Member
Joined
Jul 30, 2010
Messages
64
Location
Birmingham, AL
Tractor
bx2200
My son borrowed my 12' utility trailer and it came back a little worse for wear. The trailer is ten years old so I have no complaints but all the use I have put it through plus what he did have created a "sag" in the middle. It is about 1" and is bad enough I cannot close the gate on it. See pictures.

I know I could take it to a frame shop or welding fabricator and they can do something to fix it but I don't want to go down that road if I can help it. My question is does anyone have and idea or sketch how to straighten this using simple tools. I have a 20 foot plus logging chain, a bottle jack and a standard jack for a car. If the bend needed to go the other way it would be a little more simple.

After it is straight I am thinking of adding some reinforcing bars, good excuse to buy a welder.

Any ideas trailer2.jpgtrailer1.jpgtrailer3.jpgtrailer4.jpg
 
   / Advice needed on trailer repair #2  
that looks like pretty thin stuff = should be easy to bent/pull up, i would go get new pieces, weld them in there right along side the bent ones then jack the old ones up and then weld them to the new pieces then you have a gauge for the straightness - you could tie one side to a tree with a log chain and then the other side to a jack/come along and see if you could streatch it back into place, if you dont have any heat its going to be tough, you could easily stretch it back into shape with that also. Torches are great for that kind of thing
 
   / Advice needed on trailer repair #3  
As best I can tell by the pictures, you just need to straighten the cross members so with that in mind do the following,

Place two short 2x4's or 4x4's on the floor straight under the cross member. Place a 5/16" or 3/8" chain between them. Hook one end of the chain to one side of the trailer, hook the other end to the other side of the trailer. Place the jack on the two 2x4's so it is centered on the chain.

Place a short (1' to 2' long) 2x4 between the top of the jack and the underside of the cross member. That will help keep from kinking the cross member as you jack it straight. Use extra wood blocks to minimize the gap between the jack and the cross member. Those extra blocks can go under the jack or on top of it, whatever is easiest.

Adjust the chain length as short as you can using double hooks or a binder. You want the chain to span from one side of the trailer, under the center of the jack, to the other side of the trailer with both ends of the chain as close to being aligned to the cross member as you can get them.

Jack until the cross member is slightly bowed up, then release the jack to see how straight the cross member is. Some experimenting will be needed to see how much over straightening will be needed to get the cross member straight.

Good luck.
 
   / Advice needed on trailer repair #4  
Flip your trailer upside down and use a 4 pound maul with some finesse.
 
   / Advice needed on trailer repair
  • Thread Starter
#5  
This sounds like a great idea, the 2x4 and chain, I believe I have everything you describe. I will try this tomorrow morning and post my results, looks like rain here any minute.
 
   / Advice needed on trailer repair #6  
Flip your trailer upside down and use a 4 pound maul with some finesse.

And then after you beat them into submission nest a 1 1/4 x 1 1/4 square tube into the angle and weld it up. If you don’t add some material it will probably just bend again.
 
   / Advice needed on trailer repair
  • Thread Starter
#7  
And then after you beat them into submission nest a 1 1/4 x 1 1/4 square tube into the angle and weld it up. If you don’t add some material it will probably just bend again.

I agree, I have a friend who will have some tubing and maybe a welder. If not I can buy one.
 
   / Advice needed on trailer repair #8  
I'd cut the bent ones out and replacement them with 3/16 or 1/4" angle iron.
 
   / Advice needed on trailer repair #9  
And then after you beat them into submission nest a 1 1/4 x 1 1/4 square tube into the angle and weld it up. If you don’t add some material it will probably just bend again.

100% agree. I didn't mention it as figured the OP does not have a welder.
 

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