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Farmall & IHC Tractors Discussion Forum
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H hydraulic liftall

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farmallwayne

03-12-2006 18:40:58




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Hello,

I have a horn loader on an farmall H

It has single acting telescoping cylinders. Run right off the liftall pump and valve.

Recently it has started leaking down. It will leak down 3 feet in about 1 min. It used to stay where you put it. It would hold its position for days when parked now itleaks down in less than 2 min.

There is no oil leaking on the ground. Could dirt or somthing gotten in the liftall valve, or relief valve?

Any Ideas would be great

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Janicholson

03-13-2006 06:39:22




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 Re: H hydraulic liftall in reply to farmallwayne, 03-12-2006 18:40:58  
The answers below are good, I would ad that some two way cylinders are used as a resivoir for fluid. If the tops of the lift cylinders are connected, I would suspect the cylinder/s. Pull it up to a barrel and set the loader on the barrel. Disconnect the hoses (leave them "Y"ed together from side to side) and cap/plug them at the loader, and tractor. back off of the barrel with the tractor (with everything clear) and see if the loader goes down as before. If it does it is one (or both) of the cylinders bypassing.
JimN

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Will Sick

03-12-2006 21:17:33




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 Re: H hydraulic liftall in reply to farmallwayne, 03-12-2006 18:40:58  
If it were the cylinders leaking the oil would come out of the top of the cylinders. It must be the valve in the pump. If you have two way cylinders then it could be the cylinders.



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MagMan

03-12-2006 19:01:34




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 Re: H hydraulic liftall in reply to farmallwayne, 03-12-2006 18:40:58  
I would say that thecylinders are leaking internally . I had the same problem years back and rebuilt my pump 3 times and tweaked it and every thing and come to find out the seals were shot in the cylinders. When they rebuilt mine they machined a puck and used the new type of neoprene seals . Have not had a problem since. JON Farmall Magneto site

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jossette

03-12-2006 18:45:42




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 Re: H hydraulic liftall in reply to farmallwayne, 03-12-2006 18:40:58  
probably internally

if you have couplers on the hoses, uncouple and if it comes down it is internally.



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