Duramax Diesels Forum Truck of the Week
  #1  
Old 09-08-2017, 02:10 PM
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Default Traction Bars

The other thread (LB7 traction bars) got me thinking.

I have bars laying in the shop for my LML. I need to make brackets for the bars. On my LB7 I used weld-on brackets from PullingProducts.com. I don't want to use weld-on brackets on the LML if I don't have to.

Now my question, what frame bracket is everyone using on the LML due to the boxed frame?
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Old 09-09-2017, 07:40 AM
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Bump

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Old 09-10-2017, 01:27 AM
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My brackets are welded on. But you could probably drill and tap hold to bolt them on..
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Old 09-10-2017, 05:35 PM
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I looked at the bottom of the frame in the mounting area. It's double wall in the bottom. If it's tapped it'll only be a few threads.
I might have to weld on the same brackets I had on my LB7. I'm just leery of all the additional electronics on the LML compared to my LB7.
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Old 09-10-2017, 06:37 PM
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Keep the ground by the weld area and make sure it's a GOOD ground. Disconnect the batteries as well and you will be fine.

I would not drill/tap the frame for the mounts. With the loads the bars will see, you will easily rip the threads out
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Old 09-10-2017, 09:09 PM
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Always ground on the same piece of steel your welding. Not a bracket that is bolted to something that your welding as there may be paint in between the two pieces.

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Old 09-11-2017, 11:06 AM
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Longhorn sells bolt on traction bars for the LML trucks. Pretty sure you can get just the bolt on brackets from them as well.
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Old 09-11-2017, 11:29 AM
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Quote:
Originally Posted by Digmax View Post
Always ground on the same piece of steel your welding. Not a bracket that is bolted to something that your welding as there may be paint in between the two pieces.

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Where would you ground if you were welding on the bed floor in the center. Got a softball size hole from a previous 5th wheel hitch. I was thinking bed mounting bolts but now I'm not sure.

Interested on the traction bar info as well so it's not an intentional thread derail
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Old 09-11-2017, 12:08 PM
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To be extra careful you could tack on a ground strap close to the hole.


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  #10  
Old 09-11-2017, 01:23 PM
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Quote:
Originally Posted by AZlml View Post
Where would you ground if you were welding on the bed floor in the center. Got a softball size hole from a previous 5th wheel hitch. I was thinking bed mounting bolts but now I'm not sure.

Interested on the traction bar info as well so it's not an intentional thread derail
pull a fender support bar, tap the bolt hole to clean the treads, clean the bolt threads, put bolt back in loosely, put ground clamp on and go to town. i would still pull battery grounds to be safe
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BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

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Old 09-11-2017, 01:24 PM
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Could just unbolt the bed and lift it on some 2x4s. Then you don't need to worry


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Old 09-11-2017, 05:55 PM
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Troy, I looked at those brackets. They use three bolts and nuts to attach the brackets on the bottom of the frame. My question when looking at them was how does one get to the nuts, or get the nuts inside a boxed frame? Maybe I didn't inspect the frame area enough.

I thought of extending that type of bracket so that it goes up the frame both inside and outside (like a "u" shape when viewed running with the frame. Then drilling and bolting them through the sides of the frame.
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Old 09-11-2017, 06:13 PM
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Quote:
Originally Posted by Whitetail Addict View Post
Troy, I looked at those brackets. They use three bolts and nuts to attach the brackets on the bottom of the frame. My question when looking at them was how does one get to the nuts, or get the nuts inside a boxed frame? Maybe I didn't inspect the frame area enough.

I thought of extending that type of bracket so that it goes up the frame both inside and outside (like a "u" shape when viewed running with the frame. Then drilling and bolting them through the sides of the frame.


Nope, bolts won't stay tight. The frame will give as you tighten since there is no sleeve. Now if you put a sleeve in the frame and weld that in, then it would work well
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02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
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