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Cub Hydraulic Pump

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55 replies to this topic

#31 Alc OFFLINE  

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Posted June 24, 2016 - 08:38 PM

Kenny here's a hydraulic motor that was made for a bolt on holding valve and used O-rings  like your pump  I drilled out the 1/2" holes to 9/16" and used a 3/8" pipe tap . I did one at a time putting grease  in the hole to sort of contain the metal but for as much time I  spent trying getting it clean I should have just taken my chances taking it apart to drill and tap

 

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#32 KennyP ONLINE  

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Posted June 25, 2016 - 05:04 AM

Good idea, Al! But look back at the first post. With the o-ring bosses and not much depth there for threads, it might not work.



#33 Alc OFFLINE  

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Posted June 25, 2016 - 05:36 AM

Kenny I was just trying to show that sometimes you can thread it and like you said not everytime there will be enough to tap it.
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#34 KennyP ONLINE  

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Posted June 25, 2016 - 05:50 AM

Thanks!



#35 Alc OFFLINE  

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Posted June 25, 2016 - 05:57 AM

Not trying to hijack your thread or anything , someone might pass up a pump ,motor or a hyd cylinder that a bolt on flange like your pump or like mine a holding valve was attached .
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#36 KennyP ONLINE  

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Posted June 25, 2016 - 06:30 AM

I don't mind Al!


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#37 KennyP ONLINE  

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Posted June 25, 2016 - 11:16 AM

I took the -8 fitting out of the MF valve and it has a built in restriction.

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And I looked through my bag of fittings and found another with a very small hole in it.

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#38 KennyP ONLINE  

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Posted June 26, 2016 - 10:33 AM

Things may have changed! I just talked to a friend of mine that has one of these pumps. He'll trade straight across for the Cub pump. He deals with the larger Cubs and may have a use for mine. What do you all think?



#39 victor3ranger OFFLINE  

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Posted June 26, 2016 - 12:01 PM

How did I miss this??  I have been banging my head against the shop wall trying to figure out how to mount handles on my H3 JD valve I want to add to my 318 build. 

Want me to bring mine over to do something like this to mine?? :smilewink:


Edited by victor3ranger, June 26, 2016 - 12:02 PM.

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#40 KennyP ONLINE  

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Posted June 26, 2016 - 12:58 PM

How did I miss this??  I have been banging my head against the shop wall trying to figure out how to mount handles on my H3 JD valve I want to add to my 318 build. 

Want me to bring mine over to do something like this to mine?? :smilewink:

I happen to have a 140 H3 here. I could probably make something work.



#41 KennyP ONLINE  

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Posted July 13, 2016 - 04:16 PM

Today I made the trip North to my friends house and we swapped pumps. I'll have to make a mount for this one, but I also got a cylinder with it.

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I've gotten the 4" pulley of it already and taken some measurements. This pump came from a Montgomery Wards tractor and was run by a pulley at the rear on a PTO shaft. He has a couple Cubs with this style pump up there and I measured the OD of their pulleys. They are 6-1/2". This has a 1/2" shaft with a flat for a set screw. I'll measure the OD of the pulley on my Cub 108 at the flywheel end so I can get the ratio needed to run this.


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#42 KennyP ONLINE  

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Posted July 20, 2016 - 02:35 PM

Stared out the day making a mount for this. Got things pretty well situated.

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After doing all this, I looked Alice over and there is no way to get a belt from the crankshaft out to this pump! That's an exercise in futility! And with every valve I put on this tractor blowing the rear seals (even a two spool MF valve) I guess I need to look into electric lift for things!


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#43 skyrydr2 ONLINE  

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Posted July 21, 2016 - 05:21 AM

Hold on there , ask your self why are these seals blowing out first? What about the valves on the FF''s? Can you try one of the leakers on them to see if it might be bad valves your trying on Alice?
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#44 Alc OFFLINE  

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Posted July 21, 2016 - 05:41 AM

Kenny , here's pictures of the same ( or almost the same ) pump mounted from the factory on my Economy  Jim Dandy . it uses a link belt so it can be mounted without a way to adjust it and it's only mounted on the front using 2 bolts , even the mount it's self isn't very thick . maybe you could get some ideas of a different place to mount on Alice ,     

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#45 KennyP ONLINE  

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Posted July 21, 2016 - 06:02 AM

Hold on there , ask your self why are these seals blowing out first? What about the valves on the FF''s? Can you try one of the leakers on them to see if it might be bad valves your trying on Alice?

Apparently something is causing a restriction in there some where. I know the 2-spool valve has a built in restriction.

DSCN1875.JPG

Maybe the cylinder is binding? I can't seem to figure out what is the issue is. I'd have to take a bunch of things apart to get to the FF valve.

Kenny , here's pictures of the same ( or almost the same ) pump mounted from the factory on my Economy  Jim Dandy . it uses a link belt so it can be mounted without a way to adjust it and it's only mounted on the front using 2 bolts , even the mount it's self isn't very thick . maybe you could get some ideas of a different place to mount on Alice ,     

Thanks! My main issue is getting a belt out past sheet metal. I need to get a pulley ratio figured out so I'll know what to put on the engine.


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