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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Re: Looking for a JD 450C Loader boom cylinder pin

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Author  [Modern View]

07-29-2014 05:53:34

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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.


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roy suomi

07-29-2014 18:07:19

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 Re: Looking for a JD 450C Loader boom cylinder pin in reply to DrLoch, 07-29-2014 05:53:34  
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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07-30-2014 06:24:12

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 Re: Looking for a JD 450C Loader boom cylinder pin in reply to roy suomi, 07-29-2014 18:07:19  
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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. :?

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