Power Unit from Combine Engine?

[clayshootr]

This is a little off topic but I was wondering what challanges I would have pulling the engine out of a late model 7700 turbo combine and making a power unit out of it to power our irrigation well. I think it is a 404 ci engine. I will need to rig up a radiator, Murphy switches, clutch, and build a stand for it. This engine has aobut 4000 hours on it so it should still have some life left in it. What else am I missing?
Thanks for any input!
TJ

 

[HubbTrac]

I have built several units like this over the years. Late model 7700 combines had the 404 turbo engine. Once you get it mounted on a frame and rig the radiator up, most of what is left is wiring and murphy hookup. you will need some kind of throttle control. I usually use the truck cables...the ones you can turn and lock so it won"t vibrate loose. You will need some kind of fuel shutoff solenoid hooked through the murphy system. On the inline Bosch pumps I usually use the vertical mount Trombetta solenoid. It will mount right to the back of the pump with the hardware kit that comes with it. Make sure you have oil pressure and engine temp. murphy gauges too. Once you get to that point, hooking up the clutch or drive line is the only other major thing left to do.

 

[Cooney Minnie]

I did this with a 329 out of a 4400. It also worked well. I bought the gauge package and Murpy switches from Deere, used the tach from the combine, as well as air filter, muffler and radiator.

I believe I have one of the few power units with a rotary screen!

getting the right bell housing was the expensive part... do some investigating and see what you can find on that end so you're not surprised later.

 

[clayshootr]

I did not think of the bell housing. Where could I find one that would work? And where would be the best place to find the clutch?? I priced one from Deere and they were talking close to $2000.
Thanks
Tj

 

[clayshootr]

Did not think of the fuel shutoff either. Thanks!

 

[HubbTrac]

I have used the powershaft and tube right off the combine to hook direct to a generator with a lovejoy type rubber coupler. Depending on what you are doing...running a generator to power a well pump and pivot...or running a centrifugal pump to pump out of a pond will have to determine what hook up you need. Best I remember it's the sae 4 18" bell housing (and drive disk to bolt to your flywheel) to adapt direct to a centrifugal pump. I use a tractor flywheel because the heavy combine flywheel is harder if not impossible to make work right. If you can get hold of an over center hand clutch used with a drive shaft...it makes it nice in that you can run the engine without having the pump in motion if you are running a pump down a well.