504 diesel - help identifying things

Hello guys.

I'm trying to identify a few parts on the tractor that the IH-201 manual, ownersmanual and internet so far have just turned up nada on. I appreciate any insights.

The pictures may not be in order. sorry.

1. back of the tractor - small bar and clip looking peice. i have no clue what these are for or why they're here. frankly the bar looks like some crap conduit that was slapped on for ? reasons. the clip looks like it might belong though?

2. pic with the oil filter in it. two parts - 1, what is the part sticking up just behind the oil filter housing 2. why would that hose be sticking out of the head right there and should it be hooked to something?

3. Right tire pic (while sitting in seat) why would someone weld that riser in and put a plate on the top like that? i just wanna nip that thing off there cause frankly i'm going to prolly end up getting caught on it eventually.

Last - and no picture - the 3pt hitch upper link has a hydraulic ram going down inside the body of the tractor - i assume thats just to dynamically level the 3pt hardware off without having to twist the link?

Thanks guys!

Maglinvinn,
#1..factory 3pt...Center link has a fold out handle on it with a ball on the end of it the handle fit in that Clip and the Ball on the end of the handle will keep it from sliding out. The center link will stay pointed up, out of the way of the PTO. or hitch when a draw-bar pull implement was hooked up!
#2..An Outlet for Coolant off the Head, Previous owners may have had a Block Heater there, Best Guess! If it annoys you put a plug in the head!
#3..Probably was an platform for Hydrolic controls or Sprayer controls,... Modifications like this have been done since the first tractors came off the line! cut it off But You might need it dome time just think it through!
#4.. sound like a Farmer Modifications of some kind!
Hope this helps.
Later,
John A.

I'd say the broken piece of pipe is what's left of a curved taillight bracket. May or may not be original.
The piece of hose sticking out above the oil filter is likely where they had a coolant heater plumbed in at one time.
What kind of 504 do you have there with drop axles? Is it a high crop or a cotton picker tractor?

everything i've read and heard about it is that its a high crop. I don't know how to determine if its for cotton instead, and will be running it as a high crop

The notion that those are taillight bracketry really resonates with me. it'd be functional to have the taillights there

codes on the serial number plate should indicate if it were a cotton picker tractor.

Last - and no picture - the 3pt hitch upper link has a hydraulic ram going down inside the body of the tractor - i assume thats just to dynamically level the 3pt hardware off without having to twist the link?

Click to expand...

That's the sensor for the draft control.