7010 injector pump

I don't know what has failed in your injection pump, but I would never advise swapping a (good?) running engine for some 10 year older and unknown condition combine engine. Fix your pump or buy a used pump from a salvage yard and have it freshened up. A pump from a 7000-7010-7020 or M2/M3 combine will fit.

I cannot imagine how bad a Roosa DM could fail to make swapping the entire fuel system or even engine over to get it going. Sometimes you just have to bite the bullet and call in a professional lmao! Most pump shops have good cores to scavenge parts from to make one run again!

Seems like I remember this tractor having hard starting issues some time back and pump timing was in question. I thought the pump had been just gone thru at that time ?? Maybe not.

something came loose and punched a hole in the case.

still dont think i would change out the engine just for a bad pump un less you think their is somthing wrong with accessory drive

well, I got the St Jo pump in and apart, sadly the head is seized. The leaf spring screws had backed out quite a ways(had to be really low on hp) to the point one of them began hitting the lobes of the cam ring. So with any internal unhappiness, they end up seizing up. It looks like the cam ring had been replaced as well as the head and rotor being a rebuilt one by the looks of things. The DM pumps use shoes that are .005" difference in sizes, and a lo hp app like a 7010 would use -020 shoes, that keeps the leaf spring screws in most of the way letting their nylok patch hold them in place. Well, this one has new looking -015 shoes so in order to close down the roller setting the leaf spring screws would be out further, therefore allowing them to simply back out. I texted Gary some pics, so hopefully he can post them up, I am not smart enough lmao! Sad to see the poor work coming out of the big shops, and they won't back it. This had to be making horrendous racket while the screw was hitting the cam lobes, could have saved the head if it would have been parked and pulled off before catastrophic failure. Looked closer and it has -010 shoes which is even worse. Almost like they only want to stock the one size. The leaf spring screws are loose, the one that hit the lobes turns with my fingers. 

Edited by injpumpEd - 11 Nov 2024 at 7:46am

Ed, I just want to say thank you for posting up what happened.  I have been misled by so many injection pump shops in my life.  I really appreciate that you are honest on here and give proper advice.  I sure wish you lived close enough to me I could drive up to your door with my pumps and injectors.

We received the pump back from Ed Guenther (injpumpEd), very quick turn-around.  We installed on the tractor Wednesday  Everything we needed to reinstall the pump was included.  The pump looks brand new.   Thank you Ed.

Use clean and quality fuel and change the fuel filter regularly and that injection pump will outlast the tractor.