Foreign material

K Effective

Well-known Member
I have re-started working on my project tractor- a 1996 Deere 5500N cab tractor. I have spent quite a bit of time repairing this unit already, but hit a couple of brick walls and stopped for a couple of years (okay, more like 5...). Whatever. Last night I started to drain the hydraulic fluid, to replace fluid and filters and clean the suction screen.
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When I removed the front transmission drain plug, I had this object drop out almost right away. Any guesses what it might be and how concerned I should get?
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Wherever this came from, it does not look worn or broken. Looks to me like a pin of sorts, too good to be a roller from a bearing. Thanks for any help provided. And by the way, who designs a tractor that requires the drawbar frame and hitch have to be removed to pull the hydraulic suction screen?
 
It's a dowel but I could not begin to guess where it came from. Looks like it has never been in anything but oil. It may have been dropped in when the tractor was assembled. It happens. Found some stuff in the crankcase of my H when I tore it down. One was a governor flyweight pin with the cotters in and bent around just like the ones in the governor.
 
That's just a conglomeration of thermal neutrons there, just go prompt-critical and they'll dissolve...
 
This is a 5500N, N is for narrow! It is going to pack a lot into a SMALL space, therefore, things are probably going to be tight
quartered, i.e. drawbar frame covers up suction screen.
 
After looking inside as much as I could, I think I have a dowel pin, 44M7072, 10X23mm, of which there are two used between the transmission and clutch housings. This dowel either got dropped inside, or fell in during assembly, at least that's my guess. I removed the bottom access plate of the clutch casing, and judging by the layer of sludge inside the cases, this may have been the original hyd. fluid.

Part number seven here:
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As stated, this is a Narrow tractor and the drawbar frame has to come off to remove the pump strainer. I can see why that probably didn't happen too often, but the rest of the machine shows a lack of maintenance well beyond abuse.
 

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