Bf4m1011f no oil pressure

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tfray

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Joined
Aug 1, 2026
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Nevada
Hi everyone, im hoping someone can help cause im at my wits end.

I have a 2002 Gehl 5635 SXT with a BF4M1011F

I just rebuilt the engine, the first time I didnt align the injectors right and so it ran away on me until the crank seized.
Lessons learned.

Tore it back down and ground the crank and rebuilt again. When I was doing the prestart cranking I cant get any pressure on my oil gauge. I did some research and realized I forgot to put it an oil galley plug under the timing cover. So I took the front off and put that plug in. Now im still not getting any oil pressure.

Zero oil pressure, and the galleys arent filling up. I took the oil filter off and cranked it and nothing comes out of the oil filter base. I tried priming the oil pump by sending oil back into the galleys from the plug next to the oil pressure sensor (where I have my mechanical guage hooked into) and it only took 1 pump before it was just spilling back out. I also tried putting oil down the oil temperature sensor hole and same thing. 1 pump from my little handheld transfer pump and it was just coming back out.

I put a new oil pump on when I rebuilt the first time. (From Friday parts china)

Does anyone have any idea what I need to do now?
 

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