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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

JD 440 Loader Arms

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Bob

12-09-2003 08:52:40




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The arm pin holes on my loader have worn significantly. Apparently the pins are somewhat harder than the arms as no or limited wear shows on the pins. Has anyone experienced this (as I'm sure it's common) and have a recommendation for solving this problem based on your experience. Thanks in advance for assistance..... .....Bob




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Wayne

12-09-2003 21:51:24




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 Re: JD 440 Loader Arms in reply to Bob , 12-09-2003 08:52:40  
Hey Bob if the holes are egged the first thing you need to do is have them either built up and line bored back to spec and rebushed or if there is enough meat in the pin boss simply have them bored oversized and use oversized OD bushings. I'll put a link here for you to Connex bushings. If you'll get the holes bored and then use these bushings in them I'd just about be willing to bet it will outlast all of us. Norfolk Southern Railroad uses these bushings for "everything" on their rail maintenance equipment because they do last so long. If you go this route and use Connex bushings there's a secret to it that will prevent alot of cussing and smashed fingers. When you get ready to put one in put a hose clamp around the bushing and squeeze it together as much as poossible before trying to drive it in the hole. Once you get it started, drive the bushing in as far as the clamp before you remove it, then finish driving it on in. It makes it ALOT easier to start in the hole being compressed like this than trying to drive it at it's max OD. Good luck. Wayne

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Brokenwrench

12-09-2003 15:04:31




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 Re: JD 440 Loader Arms in reply to Bob , 12-09-2003 08:52:40  
This is a common problem,usually caused by lack of maintenance or working in abrasive conditions. The only fix is to cut them out and have new ones made and weld them back in. When you reinstall the bucket,use washers to close the clearances up as much as possible between the arms and bucket. This helps keep the grease in and the dirt out.



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Alvin n Ms.

12-09-2003 10:53:43




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 Re: JD 440 Loader Arms in reply to Bob , 12-09-2003 08:52:40  
Bob, did the pins wear completely through the bushings? alvinnms



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