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Oliver 1750 internal oil leak

Oliver 1750 internal oil leak

I am working on an Oliver 1750. Once the unit is fired up and makes a pass or two down the field it starts to pour oil from the coupling gear where it mates to the transmission. The leak is coming from in between the gear and the PTO shaft the goes through the gear box and into the transmission. Once we tore into the unit we found that the leak is coming from above the main gear box from the power steering and 3point attachment reservoir where the main oil pump is. We took this off and got that little oil pan off of it to find that the pan had been braze welded a few times and the bolts in the pan that hold a needle in place that rides on a spring in the main box were only hand tight. I'm sure since this piece is gasketed it probably has pressure. Anyway any thoughts on where I can get a new pan and any thoughts on how to troubleshoot the leak would be greatly appreciated.

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