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hydraulics leak down


 
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Dick E
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Joined: 25 Jan 2008
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PostPosted: Wed May 13, 2009 5:19 am    Post subject: hydraulics leak down Reply to specific post Reply with quote

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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mEl
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Joined: 28 Sep 1998
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PostPosted: Wed May 13, 2009 2:30 pm    Post subject: Re: hydraulics leak down Reply to specific post Reply with quote

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
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PostPosted: Thu May 14, 2009 5:37 am    Post subject: Re: hydraulics leak down Reply to specific post Reply with quote

Ok I'll block one cylinder at a time and give that a test. Thanks
 
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Dick E
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PostPosted: Thu May 14, 2009 3:14 pm    Post subject: Re: hydraulics leak down Reply to specific post Reply with quote

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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