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Self-raising hydraulics

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Rich Lohmann

02-09-2001 10:00:17




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I need some help. For years my three point hitch will raise by itself if I happen to let go of the control lever. This gets old while mowing my pastures with my 5' bush hog. I've got a '41 9N and would love to solve this problem. Other than it raising by itself, everything else seems fine. It can hold and keep up an implement for a while before it bleeds down. Any advice or tips would be greatly appreciated.

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Fred OH

02-09-2001 13:34:16




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 Re: Self-raising hydraulics in reply to Rich Lohmann, 02-09-2001 10:00:17  
Could be that the return spring is off inside. Goes from top of pump to the linkage. You will find it hanging there (usually), if not, it will be down in the sump. Get you a magnet and go fishing. If it is stretched, get a new one. L8R----Fred OH



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Fred OH

02-09-2001 13:32:01




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 Re: Self-raising hydraulics in reply to Rich Lohmann, 02-09-2001 10:00:17  
Could be that the return spring is off inside. Goes from top of pump to the linkage. You will find it hanging there (usually), if not, it will be down in the sump. Get you a magnet and go fishing. If it is stretched, get a new one. L8R----Fred OH



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Baking Powder in the fluid? NT

02-09-2001 12:08:41




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 Re: Self-raising hydraulics in reply to Rich Lohmann, 02-09-2001 10:00:17  



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hank

02-09-2001 11:34:21




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 Re: Self-raising hydraulics in reply to Rich Lohmann, 02-09-2001 10:00:17  
Things are rusted up badly under the lift cover.



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rbell

02-09-2001 11:18:28




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 Re: Self-raising hydraulics in reply to Rich Lohmann, 02-09-2001 10:00:17  
and you may want to get yourself a Zane Thang!



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patrick from oregon

02-09-2001 10:36:47




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 Re: Self-raising hydraulics in reply to Rich Lohmann, 02-09-2001 10:00:17  
Ron from Ill is correct.
I had one of my Jubilees and one of my 8Ns do the same thing. The cork gasket was worn out or destroyed.



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BB Stacker

02-09-2001 10:34:47




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 Re: Self-raising hydraulics in reply to Rich Lohmann, 02-09-2001 10:00:17  
There is a nut at the bottom of the touch control lever that adjusts the amount of friction required to move the lever. Tightening the nut increases the friction and keeps the control lever from drifting up. If tightening the nut does not help, the friction disk behind the control lever probably needs to be replaced. Cheap even at FNH



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BB Stacker

02-09-2001 10:34:25




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 Re: Self-raising hydraulics in reply to Rich Lohmann, 02-09-2001 10:00:17  
There is a nut at the bottom of the touch control lever that adjusts the amount of friction required to move the lever. Tightening the nut increases the friction and keeps the control lever from drifting up. If tightening the nut does not help, the friction disk behind the control lever probably needs to be replaced. Cheap even at FNH



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Ron from IL

02-09-2001 10:30:57




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 Re: Self-raising hydraulics in reply to Rich Lohmann, 02-09-2001 10:00:17  
Rich,

It sounds like the friction disc between the lift handle and the tractor is worn out. Remove the cotter pin from the castellated nut holding the arm to the shaft, remove the nut and arm, and either buy or make a replacement friction disc. I made mine out of heavy gasket material, and it's lasted over three years now. Good luck.

Ron



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Rich Lohmann

02-09-2001 13:49:15




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 Re: Re: Self-raising hydraulics in reply to Ron from IL, 02-09-2001 10:30:57  
As for replacing the cork friction disk, I did that years ago and tightened up everything I could find. This didn't help one bit. It's still a mystery.



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