The door(s) I was working on were off a Cab 13, the outer shin was ripped around the hinges and needs other patching too. Oddly, it seems to have fatigued in the corners rather than seriously rusted. I was also curious to see how the door was built.
To open up the door I drilled out the spot rivets and bent back the flange around the door edges. I probably should have used heat along the fold line to soften things because the metal was cracking as I unfolded it. Not really surprising given the tight fold. One interesting thing, it seems they assembled the screws at the top of the door, then did a very few spot welds to hold the two faces of the door in place as they folded the flange over and then did the main series of spot welds around the perimeter. As with all CMP welding, the quality was "variable". The initial locating welds were missed as I started the door disassembly.
Bob's doors were off cabs 11 and 12. Interesting to note how many more parts were used to make the earlier doors. But each part cound be made using much simpler equipment.
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17-02-09, 02:35
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