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Building a flat bed dump bed for my Superduty

11K views 23 replies 7 participants last post by  DeerMeadowFarm  
#1 ·
Ok so onto yet another project. My factory bed is rotting and went through a real tough winter. So I decided to make yet another dump bed. I want to keep it as light and strong as I can. I am using 3 x 5 angle for the side and instead of C-channel I will be using angle for the cross members also instead of C-channel. Some of the pics show it hanging from my hoist so I can get the Wife's mustang back into the garage. Also all edges have been milled so everything is square for welding. I also checked this set up with a digital angle finder and I am a tenth of a degree off from 0.0 and 90 degrees. I also used ratchet straps to get it all nice and tight before welding.
I also have videos on youtube username: tjsnordic
Not too good at video editing or even filming myself (cutting off my head with the camera mounted on the tripod).
The Jig in the picture is what I used as a guide to plasma cut the 2" holes in the side of the bed for the lights.

Pics.
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#3 ·
It will be a little while until I get some more done on this because I have to order the hyd. hoist kit. I will also be grafting my existing headache rack to this bed.
T.J.

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#5 ·
Yep still driving the superduty.

Ok got more done on this thing. I also did some welding on the scissor where there should have been welds on it. I am going to send the pic to the guy who tried to explain how what great welder he is. I also ground out his missed weld and redid that as well. I sanded the paint off as well.

I got the tail light panel (1/4" plate) made as well as welded in with gussets and stake pockets. I also put a 2" receiver tube I had laying around. This will hold my vice as well as a holder for long lengths of steel.
pics are in no particular order.

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#9 ·
I got an aluminum tool box that will mount under the right side of the dump bed. It will be attached to the frame rail with supports and gussets. I am going to use this tool box to house my hydraulic pump set up to keep it out of the elements. I then remembered I got a train horn kit that I never used and it came with a compressor and a tank. So I had to get creative in stuffing the compressor, air tank, pressure control relay (turns off compressor at 150psi and comes on 110psi)and the hydraulic unit in the 24” wide tool box. I got it done and also verified that the pressure control relay works and the system has no leaks. I will have to support the tool box with some serious plate cause this thing is heavy.

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#11 ·
I am also making videos of the build when I remember and have the time to make them. Here is a start of the dump bed build series. There are more vids on my YT page as well of the build.

http://www.youtube.com/watch?v=9q4SOd4oaxs
 
#15 ·
Ok got the bed off of this thing. Used the backhoe to get it off. Had to plasma cut the heads of the bolts off. Found 3 rear brake lines ready to rust through and leak. Also found a fuel tank breather tube rusted through. Going to replace all that tomorrow. I power washed the scale off the frame and tomorrow I will sand blast and hopefully get a coat of epoxy primer on it. Then I will be able to mock up the dump bed and hinges. More to come.
T.J.
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#18 ·
I just ordered stainless line for all my rear brake lines from Mcmaster. I have a brake flaring tool so making them up is no big deal. I bought the dump kit scissor set up new. It is a Pierce Unit. I do not recommend it. The workmanship is crap(see above posts where I had to re-weld their missed welds). They look like they are made overseas. I wish I kept my other dump unit I had when I had my chevy. I wish I still had that flat bed dump set up cause I could have swapped it to this one with only a couple of mods. I sandblasted only one side of the frame today. It took all day by the time I got my sandblaster working the way it should Oh it is brand new but needed much fiddling with to get it to work right.
T.J.
 
#20 ·
Ok more progress.
Well after what seems days of sandblasting and getting the frame as clean as I can get it, I coated it with epoxy primer. Up next I am going to mock up the bed and make the rear hinge set up.
T.J.

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#21 ·
Some more progress this weekend. This weather is killing me, last weekend was all rain. I made my rear hinges, machined some bushings and mocked them up. I had to offset the hinges in the rear cause when I built the flat bed I used the frame width of 36". That is the narrowest point between the axle. The widest point of the frame is 37.5" which is where the hinges are supposed to go. No biggie just offset them. See pics. The pics are in no particular order. I will be gussetting the hinges so before anyone comments I am not done yet. This B**ch will be strong. Believe me. I also drilled and tapped the rear bushings for grease zerk fittings. I also machined a step in the bushings which enabled me to weld the lip on the outside of the frame too, plus give me a square mounting surface. More to come.

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#22 ·
Those 1/2" plate hinges are welded with a root pass and then a final pass. This is done with a 240amp/220v mig machine. Once again the pics are in no particular order. Oh and cutting those holes in the frame for the bushings took 1/2 hour each. What a nightmare.

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