Case 644 loader repairs

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Eugen Canada
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Re: Case 644 loader repairs

Post by Eugen »

Well, the more I think about it, the more I think I'll go with the u-cup seal instead of the original wiper plus o-ring. It's a little more expensive but should provide a stronger seal for a longer time, I think. There are two u-cup type seals I have identified to fit properly, one is loaded itself with an o-ring, the other is a simple u-cup seal. Difference in price is less than two dollars, but still I think the o-ring loaded u-cup seal is probably overkill for this application.
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Re: Case 644 loader repairs

Post by Eugen »

1864966B-62E1-42A8-B0F1-BDF8DB267C2B.jpeg

Guys, how would you fix this poor out of round and stretched rod end? :hm:
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Re: Case 644 loader repairs

Post by Spike188 »

Either ream and press fit a bronze bushing or cut the rod end off and replace.
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Re: Case 644 loader repairs

Post by Eugen »

Spike188 wrote: Fri Dec 30, 2022 7:25 pm Either ream and press fit a bronze bushing or cut the rod end off and replace.
Thank you! The bushing seems a little more fit for my skills.
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Re: Case 644 loader repairs

Post by DavidBarkey »

How much out of round is it ? How wide is it ? What is the pin size?
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Re: Case 644 loader repairs

Post by Eugen »

DavidBarkey wrote: Sat Dec 31, 2022 6:45 am How much out of round is it ? How wide is it ? What is the pin size?
Oh sorry, forgot to give those details. It's a 3/4" pin, about 1.5" wide, and 1/4" thick the wall of the tube. When the pin is inside it has free play in all directions, as much as 3/42 on one side, so the hole is stretched too, not only out of round. :geek:
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Re: Case 644 loader repairs

Post by DavidBarkey »

Eugen wrote: Sat Dec 31, 2022 8:33 am
DavidBarkey wrote: Sat Dec 31, 2022 6:45 am How much out of round is it ? How wide is it ? What is the pin size?
Oh sorry, forgot to give those details. It's a 3/4" pin, about 1.5" wide, and 1/4" thick the wall of the tube. When the pin is inside it has free play in all directions, as much as 3/42 on one side, so the hole is stretched too, not only out of round. :geek:
I have a boring head for the mill to true it up . But I would lay beads of weld around it first . That will add material for what you will be removing and help shrink the bore . Grab 3/4" ID - 7/8" OD oil light bronze bushings from PA . I have a lot of old tubing to cover the shaft while welding if you need .
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Re: Case 644 loader repairs

Post by Jancoe »

The backhoe on my 6018 has seen alot of use before I got it. I can't wait for the day to take all the slop out of the cylinder ends and pivot points. I had planned on drilling them all out and bronze bush then ream. Mine are all 3/4 pins on the amerequip bh. I need to pick up a reamer set and add this to the list of things to do.

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Re: Case 644 loader repairs

Post by Eugen »

Thanks for the offer @DavidBarkey , I was thinking of a simple fix like fill up with the welder on the inside and then drill with 3/4 bit. I wish I had a slightly smaller bit than 3/4 to finish up with the reamer. My concern about drilling with the 3/4 bit is that the pin will have too much play. Using a bushing solves that problem, you and @Spike188 are a few steps ahead of me, it shows who's got real experience fixing these things. :worship:

Now, on the subject of bushing. The rest of the machine is steel on steel. It feels a little too fancy to use a bronze bushing here. If it lasts another 20 years maybe a steel bushing is just fine.

@Jancoe , there's a really bad shape d100 backhoe waiting for me too. That'll be fun! :cheers:
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Re: Case 644 loader repairs

Post by DavidBarkey »

Eugen wrote: Sat Dec 31, 2022 10:28 am Thanks for the offer @DavidBarkey , I was thinking of a simple fix like fill up with the welder on the inside and then drill with 3/4 bit. I wish I had a slightly smaller bit than 3/4 to finish up with the reamer. My concern about drilling with the 3/4 bit is that the pin will have too much play. Using a bushing solves that problem, you and @Spike188 are a few steps ahead of me, it shows who's got real experience fixing these things. :worship:

Now, on the subject of bushing. The rest of the machine is steel on steel. It feels a little too fancy to use a bronze bushing here. If it lasts another 20 years maybe a steel bushing is just fine.

@Jancoe , there's a really bad shape d100 backhoe waiting for me too. That'll be fun! :cheers:
With a hole that small and long it is easier to weld up the outside and the true up the bore for bushings.
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