| With the paint stripper cleaned off and the hinge pockets cut down it is time to get them welded into place. When welding these 1/8” thick pockets to the sheet metal jamb, I choose to use .023 mig wire. It is a good size wire that will allow you to use low enough heat that will penetrate the hinge pocket, and will let you flow the puddle into the sheet metal. You have to do it quickly enough so you won't burn through the skin. You might want to practice on some scrap metal first to get the technique down.
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After the hinge pockets are welded into the cab it is time to install the swinging part of the hinge. When the swinging part of the hinge is installed, bolt the door pockets to the hinge and get them centered as much as possible.
Close the new hinges and shut the door as much as it will go, because the new hinges get in the way, the door will not close all the way. With the door still swinging on the factory hinge, it makes it easy to draw a line around the hinge-door pocket.
You will then cut out the part of the inner-door skin for the pocket to fit into. I used the same air grinder with a cut off disk to make these holes.
Remember to cut the hole to an exact fit for the pocket. You don't want hardly any gap around these pieces. The inner door skin is not that thick, and getting burn through is easy and needs to be avoided of course.
It is extremely important that the door-hinge pockets get welded in place with the door closed all the way and in factory position. This is not hard to do. Keep the hinge-door pockets bolted to the hinges. This assures you that they are in their future exact location. With the door closed all the way and flush with the cab you can now tack weld the pockets in place.
When you have the door pockets tack welded really well (like in 10 good places) you can unbolt the new hinges from the door and remove the old factory hinge pins. Do not remove the factory hinges from the cab or door yet. You will need these to act as a door prop when you bolt the door back on. It is now time to bolt the door back onto the new suicide hinges and take it for a test swing.
You will notice that the door sagged a little bit when it slid off the factory hinge. It did this because the inner door skin is flexing outward due to the weight of the door. Do not worry, we will brace the door skin to stiffen it up later.
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