Air intake question Ford 801 diesel

What air filter do you have and what nut/bolt are you talking about.

The pictures may answer your question.

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The part I am talking about is at the top of the pipe I have circled. There is a nut on bolt that goes down into pipe. It is all rusted. The nut and bolt turn together. See photo

Thanks

I believe the base is pressed into the pipe but will be a bear to get it off because of years of rust and metal bonding.

While I am not there and can not look it over well I feel your only out is to go to Ford and get a whole new pre cleaner. Take the pipe and pre cleaner off the tractor and do what ever it takes to bend; break; twist; ect to get the pre cleaner off while saving the pipe.

Your oil bath filter is in that blue tray at the other end of the pipe. Take that blue tray off; clean; and refill to the line with engine oil.

Unless you keep this thing inside all the time get you a rain cap for that exhaust pipe also.