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930 hydraulics

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case fan

06-18-2007 07:55:13

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I have a problem with a 930ck that has me strumming my lips. The tractor has weak hydraulics and the 3point lift will not maintain position with equipment raised. I have cleaned the filter, replaced the fluid, installed a rebuilt hyd. pump, and changed the hydraulic control block with one from a salvage tractor. It has 1800 psi. of pressure. Help!

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06-20-2007 08:19:41

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 Re: 930 hydraulics in reply to case fan, 06-18-2007 07:55:13  
I have a 930 as well and it will not lift until I throttle up then it has no problem lifting or holding up anything on the three point. I have cleaned and changed the oil and filter and the valves. Does anyone have any other Ideas to try?

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06-19-2007 17:37:24

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 Re: 930 hydraulics in reply to case fan, 06-18-2007 07:55:13  
I have and had the same problem.I replaced the valve under the seat and solved my three point problem. I still have weak hydraulic flow, or pressure. Could you come up with other thing I might try. Thanks

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06-19-2007 09:59:51

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 Re: 930 hydraulics in reply to case fan, 06-18-2007 07:55:13  
if the hydraulics are weak, the problem may not be the draft valve under the seat. Someone once told me that the fluid pickup tube could be blocked or the relief valve is partially blocked and holding open.

Do the outlets show low pressure?

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06-18-2007 20:21:24

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 Re: 930 hydraulics in reply to case fan, 06-18-2007 07:55:13  
You need to clean the draft-o-matic valve under the seat.

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06-18-2007 17:37:50

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 Re: 930 hydraulics in reply to case fan, 06-18-2007 07:55:13  
Look at the draft controls that connect on the
bottom of the tractor and three point hitch
often these areas fill up with dirt and mud and
will keep the lift from working properly

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