Looking for a JD 450C Loader boom cylinder pin

Looking for a 450C loader boom cylinder pin. JD P/N AT31949.
Diameter 1-3/4"
Length 6-5/8 to 6-3/4

If I have to get one made, what would be the correct material to use?

I've tried a number of searches with no results.

If the pin acts as a wear part and goes through a bearing/bushing that actually wears on the pin material, then I'd use a 4140 steel which is going to have some hardness and toughness to it. If it's pinning through a bearing that is actually doing the moving while the pin stays still (ie the pin simply acts as a rest for the bearing and there is no movement between them) then a 1010 steel would work just fine. Personally though when I make one for something relatively critical like that, I tend to use a 4140 just to be on the safe side.

I've got some pins out in my barn.. Not sure what I have.. Let you know tomorrow..

(quoted from post at 15:36:35 07/28/14) If the pin acts as a wear part and goes through a bearing/bushing that actually wears on the pin material, then I'd use a 4140 steel which is going to have some hardness and toughness to it. If it's pinning through a bearing that is actually doing the moving while the pin stays still (ie the pin simply acts as a rest for the bearing and there is no movement between them) then a 1010 steel would work just fine. Personally though when I make one for something relatively critical like that, I tend to use a 4140 just to be on the safe side.

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I agree, 4140 would be a better choice. The rear, blind end of the boom cylinder does have two bearing/bushings that the pin goes through. The pin goes through the outside of the loader frame through the cylinder into a pocket inside the area or pocket where the rear of boom cylinder goes. The pin I have/had is broken in two right at the cross drill of the grease passage, when looking at the cross section at the break, it almost looks like the pin is case hardened about .180 deep.

I'm replacing all the hydraulic hoses for the boom and bucket. I had a boom lift blow when I had the boom all the way up. Shot a nice spray of oil everywhere as you can imagine. I was picking up large stumps and placing them into a burning burn pile, I'm very lucking that the hose didn't blow when I was lowering a stump into the fire...... that certainly would have added to the fire. I can say it is a bunch of fun getting all the line replaced especially in the boom cylinder pocket area. I've certainly added to my vocabulary or made up new words thats for sure.

Roy, if you can take a look when you get a chance that would be appreciated. A used one is better than the one I'm replacing. We have a machine shop in our building that I could pay to make me a new one. They made me adapter for a replacement fan when my water pump went out about 2 months ago.

BTW I've read and applied your procedure for adjusting the clutch control on my loader which fixed an issue I was seeing when using the clutch to change directions. It Fixed the delay I was seeing. I need to go back in re-adjust again because it's a bit aggressive. The previous owners may have backed out the needle valve to crutch the engagement delay I was noticing. While I know the procedure is in the manual your write up's make it a bit easier to understand, thanks for taking the time explaining it.

Dennis

Dennis.. I had all kinds of loader pins out there in my pole barn.... BUT... The only 1-3/4 dia pin was only 3-5/8 long with snap ring grooves on the ends.. I had 6 1-5/8 X 6 pins [ 2 that were greaseable] , 1-1/2 pins, 1-3/8 pins....But , that doesn't do you any good.. Sorry..

(quoted from post at 18:07:19 07/29/14) Dennis.. I had all kinds of loader pins out there in my pole barn.... BUT... The only 1-3/4 dia pin was only 3-5/8 long with snap ring grooves on the ends.. I had 6 1-5/8 X 6 pins [ 2 that were greaseable] , 1-1/2 pins, 1-3/8 pins....But , that doesn't do you any good.. Sorry..

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Roy, Thanks for looking, I think I have a line a couple right now. That should get me going until I break something else. :?