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3pt hydraulic trouble ford 4000 help

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Rich Kwarciany

06-23-1999 18:03:12




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Looking for help on a ford 4000 Problem with 3 point lift and auxillary.
When cold it works fine. After about 10 to 20 minutes,it lifts slow. With throttle at full rpm it will lift somewhat but not enough to lift weight of impliment. Oil has been replaced but after about 10 hours is a bit milky.
Replaced unloading valve and relief valves still
no differnce. Thanks




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Steve L

08-04-2002 10:27:31




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 Re: 3pt hydraulic trouble ford 4000 help in reply to Rich Kwarciany, 06-23-1999 18:03:12  
l have the exact problem with our 69 4000,and have been wondering what to do.l thought maybe there was a way to increase oil flow, but lve heard no mention of that.



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IRISH OWNER

04-18-2001 13:46:17




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 Re: 3pt hydraulic trouble ford 4000 help in reply to Rich Kwarciany, 06-23-1999 18:03:12  
TRY REPLACING O RINGS ON LIFT CYLINDER AND PISTON
AND ALSO BETWEEN ACCESSORY COVER AND LIFT COVER THIS SHOULD IMPROVE LIFT CAPACITY IF ORINGS ARE WORN. USE A HYDRAULIC PRESSURE TESTER TO TEST PUMP PRESSURE IF IT IS WELL UNDER 2500 PSI YOUR PUMP IS THE PROBLEM AND YOU SHOULD REPLACE IT



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Bern

06-24-1999 16:40:47




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 Re: 3pt hydraulic trouble ford 4000 help in reply to Rich Kwarciany, 06-23-1999 18:03:12  
You either have a worn pump and/or blown seals in pump (gear pump), and/or blown o-rings on oil transfer tube between top cover and rear axle housing.



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