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Case Tractors Discussion Forum

hydraulics leak down

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Dick E

05-13-2009 06:19:04

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I have a 430 Case with dual hydraulic valves for my loader. The bucket has starter leaking down. No fluid on the ground, must be leaking back to the sump. The boom holds just fine. Is there a seal that I need to replace, and where? Thanks Dick

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05-13-2009 15:30:54

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 Re: hydraulics leak down in reply to Dick E, 05-13-2009 06:19:04  
I would eliminate the cylinders as the cause before I would suspect the valve. A failed piston packing on the dump cylinders will cause this. mEl

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Dick E

05-14-2009 06:37:39

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 Re: hydraulics leak down in reply to mEl, 05-13-2009 15:30:54  
Ok I'll block one cylinder at a time and give that a test. Thanks

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Dick E

05-14-2009 16:14:36

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 Re: hydraulics leak down in reply to Dick E, 05-14-2009 06:37:39  
I disconnected each cylinder and capped the hydraulic lines one at a time. The bucket leaks down with either cylinder connected. So it looks like I tear into the valve.

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