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?
 
That new pump did it come primed with any oil or grease in it or was it bone dry out of the box?
It was bone dry, so I had removed it and packed it with assembly grease, that helped me get the oil flowing. Then I found out it wasnt entering the main galleries cause the thermostat was backwards. When I got that fixed I found I had forgotten to put the oil gallery plug in the flywheel side. 🤦‍♂️ so I pulled the engine and now im waiting for the new flywheel bolts to be delivered.

Thank you for your response!
 

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