D21 series I

Usually a Roosa pump like this gets the plungers stuck when sitting in old fuel. Typically they need properly disassemble and cleaned up and recalibrated and tested. Modern fuel does not sit and age well. 

Stanadyne / Roosa - same thing. 

Does the electric shut off "click" when you turn the key on/off ??   A trained ear can hear that device on the pump to know if it is functioning or not.

Should I take the nut loose on the number 6 cylinder injector, Which is the furthest from the pump and continue to try to pump the priming pump to see if I can get fuel that far until it starts leaking out?

Now I'm trying to put my pump back on, but it will go as far as being 3/8. inch from the housing cannot find anything that could possibly be causing it. Has anyone had this problem? I left the shaft in the tractor, but greased it up real well.Seems like the key on the side of the cone inside the pump is a larger than the key way in the inside of the shaft. Could they have replaced that part inside the pump when they rebuild it? Thanks Dwight

Was a recent post about installing pump on a similar tractor. Think the approach was to remove front gear cover at pump to help handle install.

DONT force it on!!!!!!
Did the shaft come out of the pump?
If it did it will only go on in one position.
I made the mistake of thinking it was right and than went to start it and the pump pretty much exploded the guts…
Had to find another pump which are very hard to come by..

55 it sounds like the magnets had moved out of position.was the throttle wired back?

Edited by Dwight from Orlando - 25 Dec 2023 at 11:08am

No I did not lineup the timing window. I had done it a few years ago and put it right back together. And it slipped right on and worked fine. So I didn't think about that this time. And also the guy that rebuilt my pump came out to help me lineup the splines and keyway in the shaft. And we couldn't get it so he had me turn the tractor over. Sounds like what you're saying not to do I did.. The tractor engine is turned and the and the lines weren't lined up in the injector pump. So, what am I looking forward to now? If you could tell me please thanks Dwight.

Should be timing marks on the gears if you pull the cover off…

Thanks everybody I'll have to try it.

Lets hope the rubber inside the balancer ring is in good shape and hasn't slipped throwing off the timing marks.

so whats the UPDATE, Dwight ?

Sorry it took so long to respond but I had to get my slab and footer built for my building. I was gonna use my D21 with a front end loader to move dirt. But I didn't make it in time. So I have now gotten back to working on the tractor and have removed the front gear and was able to get the injector pump on. I've set the Timeing on the crank to 34° before top dead center. And in the viewing window on the injector pump, I lined up to the 2 lines. The key in the injector Is at just below 3 o'clock so I looked at the shaft thats coming out of the tractor and I moved the tractor engine around until it came to 34° before top dead center, and then Looked at at the shaft in the spline was 180° off, so I turned it to just below 3 o'clock. Just like the pump key. that's how I figured my timing without removing and using soap bubbles on the number one that it must be in the compression stroke. Because the alignment with the pump and the key inside the pump at 3 o'clock. So I'm hoping that is right. Do you guys have any comments on that ?

When a series I Allis D21 loses fluid from the trans and diff, does it most often come from the Trans front seal? Thanks Dwight