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Discussion Boards > Active Subjects > Messages as Posted > Chinese Tractors -- Jinma Farmpro Agracat Forum

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 05-29-2006, 16:49 Post: 129996
mandtandk



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 hydraulic hiccups

I changed the hydraulic filter on my 25 horse Agracat the other day, and since then, my box blade acts like it has the hiccups. When I raise it, it creeps slowly down maybe 3 or 4 inches, then jumps back up. My FEL does not seem to be affected. I thought there might be air in my lines because my filter installs horizontaly, and I did not put any fluid in it when it was installed. However, I have used it for about 2 hours, hoping to get the air purged out somehow. This has not worked yet. Does anyone have any ideas to help me? Could my problem be some worn rubber part that is allowing fluid to bypass something somewhere? The tractor only has appx. 200 hours.
Thanks to all,
Mike






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 05-29-2006, 17:22 Post: 129997
kwschumm



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 hydraulic hiccups

You could be sucking air into the hydraulics somewhere. Is the fluid foamy?






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 05-29-2006, 17:28 Post: 129998
mandtandk



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Thanks for the reply. Don't know if it is foamy. I'll have to check tomorrow.






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 05-29-2006, 18:07 Post: 129999
earthwrks

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 hydraulic hiccups

I had a 1947 Fordson 9N that did the same thing--turned out to be a chunk of rust formation on the inside bottom of the seat mount/reservoir flet down into the pump and split open.

Another thing may be air in the system that may work its way out if you load the 3 pt and use it vigorously. Air molecules are smaller thn oil so tye may purge themselves without any help over time.

Also, if you have draft control which is separate lever on some tractors, that may be disconnected or out of adjustment. My replacement for the old 9N, a New Holland TC33D had a simialr problem but the controol lever has a range in it for draft control called "mower position". Once it stopped working and turned out the actual control lever mounting bracket broke off, so I could move the lever but it wouldn't translate any motion to the hydraulics.






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 05-30-2006, 07:35 Post: 130020
kthompson



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 hydraulic hiccups

earthwrks,

I thought Ford designed the hiccups into their old tractors. It was so common a company here built slides for farmers to use on their crop cultivators to keep them at stable height.


As to the hiccups since you replaced the hyd filter, have you checked your fuild level?






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 05-30-2006, 07:54 Post: 130023
wingwiper



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 hydraulic hiccups

I was told to fill the filter with Hydralic oil prior to installing to ensure not to put any air into the system.






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 05-30-2006, 16:52 Post: 130076
oneace

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 hydraulic hiccups

From my experience (not with your brand) a leaking 3ph piston seal.






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 05-30-2006, 17:06 Post: 130080
mandtandk



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 hydraulic hiccups

My filter installs horizontally, so I didn't put any fluid in it. I'm thinking air, at least I hope so.






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 09-16-2006, 20:34 Post: 135225
mandtandk



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 hydraulic hiccups

oneace nailed it. It was a leaking 3pt piston seal. Thanks to all.






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Discussion Boards > Active Subjects > Messages as Posted > Chinese Tractors -- Jinma Farmpro Agracat Forum

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earthwrks 1 | kthompson 1 | kwschumm 1 | mandtandk 4 | oneace 1 | wingwiper 1 |




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