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Restoration & Repair Tips Board

Leak in hydraulics?

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Paulinkansas

12-05-2007 11:07:23




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I recently bought a used 1963 AC D17 series 3. It has a FEL. When I raise the bucket, it slowly comes down at the rate of about 1" per minute. It also doesn't seem to have enough lifting power as I expected it to have.

It's probably safe to say that there is some sort of leak somewhere. How do determine where the leak is? It could be in both the cylinders or perhaps it could be in the pump.

Once I determine the source of the leak, what should my next step be? Can the cylinders or pump be repaired/rebuilt, or should they be replaced?

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Paulinkansas

12-05-2007 11:39:25




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 Re: Leak in hydraulics? in reply to Paulinkansas, 12-05-2007 11:07:23  
It has 2 way cylinders. I didn't even think about a leak in the control valve. There are no external leaks.



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old

12-05-2007 12:35:18




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 Re: Leak in hydraulics? in reply to Paulinkansas, 12-05-2007 11:39:25  
Most likely one of the cylinders is by passing on the inside, but as I said in the long run its better to rebuild them both because if you don't it will come back and bit you. Guess how I know??



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old

12-05-2007 11:30:04




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 Re: Leak in hydraulics? in reply to Paulinkansas, 12-05-2007 11:07:23  
Are the cylinders one way or 2 way cylinders. I.E. do you have power down?? Cylinders can be either rebuilt or replaced but most of the time a rebuild will cost you a lot less. Also not likely to be the pump but could be the control valve. Most of the time its in the cylinders. and if you rebuild one its best to rebuild them both because if you don't the one you didn't will end up going bad soon after. Any good hyds shop should be able to rebuild them for less then $100 each

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