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So we are working on replacing the front drivers floor pan due to severe rot. We need to remove the cab mount to be able to weld in the patch panel, and to repair the front body mount to prevent further rot:
My question is how to remove this so that it can be reused? Mine has a lot of surface rust, but still looks structurally sound. It looks like maybe it was spot welded? Has anyone had success removing it without destroying it?
My next question, is while looking at replacement parts online, I saw these:
My assumption is that these are under the floor pan holding the cab to frame bushings?
Any light that can be shed on this is very appreciated!
Their are spot welds holding those mounts on. I usually take a wire brush and clean up the bracket. If you look closely you will see the indents where the spot welds were produced. Center punch the welds. Then start with a 1/8" drill bit and start working up to 3/8". I then take a good scrapper with a metal core and use it to separate the two pieces.
yea, I can see where a lot of the spot welds are. Just was out there drilling away, but my spot weld cutter just broke. Also, the whole cab corner appears to just be falling down. Im really becoming defeated with this job and it may be beyond my abilities to repair.
I was reading through the midfifty catalog, and they give good information on the cab mounts and they are more complex than I thought. If I am understanding, I will probably need to replace everything under there, and if it is not done properly, the fenders and doors will never line up properly.
The part that you are attempting to replace looks to be completely serviceable...I would not touch it. The section that IS in need of repair is the sheetmetal floor beneath it and probably the cab mount with cup that is located below the floor. Here is a photo of a cab mount that I replaced on a 54...these mounts are made to have an airgap between them and the floor panel. This gap fills up with debris and over time they will rot out and take the floor with them. The inside brace usually survives this rotting action since it is located inside the cab.
The part that you are attempting to replace looks to be completely serviceable...I would not touch it. The section that IS in need of repair is the sheetmetal floor beneath it and probably the cab mount with cup that is located below the floor. Here is a photo of a cab mount that I replaced on a 54...these mounts are made to have an airgap between them and the floor panel. This gap fills up with debris and over time they will rot out and take the floor with them. The inside brace usually survives this rotting action since it is located inside the cab.
Yea, but I need to get that part out to repair the rust and weld the floor pan under it. Once out, I will reweld it back where it belongs
Spot weld cutters are great, but really only work well on sheet metal spot welds. I still prefer taking a 3/8 drill bit to the spot welds and a chisel to free them once drilled. I don't drill all the way thru, I just drill the depth of the top piece I am drilling thru.
once that bracket is out, get your replacement panels before you start cutting anything else out. make sure you purchase the floor pan or fabricate the indent needed for the mount your removing to sit correctly.
yea, you can see in one of my pics, the spot weld cutter busted. Really thick stuff. I have the floor pan already, once I get the cab mount off and some metal cut away, I will evaluate what needs to be purchased to fix it all
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