The photo that you are trying to upload is larger than the software can cope with. If you download a program called “Shrinkpic” it will automatically downsize pictures for you and it’s free to download.
As regards your crankshaft, we had one break on a customer’s tractor back in the Nineties. At the time we could get a replacement but when the workshop fitted it, that one cracked quite early on in service. In the end it turned out that one of the main bearings had stuck to the original crankshaft and rotated in the block, making the location in the block oversize and allowing the crankshaft to flex resulting in a scrap crankshaft.
Check your main bearing locations before you reassemble and you should be alright.
Have you tried to get the part from Shibaura tractors? That is the manufacturer of the Ford 1200 and you may get more help from that side.
.
