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Harry Ferguson Tractors Discussion Forum
:

Sudden lift loss

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Grabatire

07-08-2019 10:25:07




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While a friend was using his Fergy the Three Point Lift suddenly lost lift. The key word here is 'suddenly'. It tries but no go.

The pump has recently been overhauled, including a new safety valve and control valve and the lift cylinder got a new piston with the O-ring.

What would be the likely cause?




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Grabatire

07-10-2019 20:19:43




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 Re: Sudden lift loss in reply to Grabatire, 07-08-2019 10:25:07  
Dan S. You may have hit the nail on the head. When the pump was being installed the gasket took a bit of a beating. If the part of the gasket that serves to seal the stand pipe suffered it may have only held for a while then blew out entirely.

John Deere D, thanks a lot for the pictures.



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marloweg

07-08-2019 19:07:31




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 Re: Sudden lift loss in reply to Grabatire, 07-08-2019 10:25:07  
just had one blow the gasket on the lift piston the one between the cover and cylinder



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Grabatire

07-08-2019 17:24:17




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 Re: Sudden lift loss in reply to Grabatire, 07-08-2019 10:25:07  
Dan S.It is either a TO20 or TO30. I'm wondering if the control linkage has slipped out of adjustment. He says it tries to come up but that's all.



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Dan S (NY)

07-09-2019 09:35:54




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 Re: Sudden lift loss in reply to Grabatire, 07-08-2019 17:24:17  
The pump gasket that seals the stand pipe could have failed. Also make sure the control arms haven't come off the valve in the pump.

I would take off the right side cover and use a light to look for any leaks. Don't reach inside with your hands with the tractor running! You can also try using a dowel or long screwdriver through the side cover to move the control arms and see if that will raise the lift.

Dan

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Charles in Aus.

07-08-2019 14:36:16




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 Re: Sudden lift loss in reply to Grabatire, 07-08-2019 10:25:07  
Try lifting the arms by hand a few times pushing them down hard after each lift. Chances are a stray bit of grit has jammed the valve or is stopping it from seating . The rush of oil can dislodge the trouble. Worked for me on my FE35.



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John Deere D

07-08-2019 23:47:26




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 Re: Sudden lift loss in reply to Charles in Aus., 07-08-2019 14:36:16  
Possible area of foreign material located...?

Bob...Owner Operator TEA-20...MF FE 35 X...Ford 2-N




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Dan S (NY)

07-08-2019 14:02:56




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 Re: Sudden lift loss in reply to Grabatire, 07-08-2019 10:25:07  
What model Ferguson does he have? TO20/TO30 or TO35/F40?

Dan



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