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Tractor Talk Discussion Forum

MF65

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Roger Ball

03-30-2005 10:56:46




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A recently acquired MF65 seems to have no definite hold position - the implement will stay up if the hyd pump is running, but will slowly sink when the pump stops. Is this normal behavior - or worn-out parts, or operator lack-of-knowledge? Thank you, Roger Ball




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Leon R

03-31-2005 06:57:57




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 Re: MF65 in reply to Roger Ball, 03-30-2005 10:56:46  
Txblu is correct in that it is not hurting anything. The only time it is a problem is when you have a front end loader on like I do and you are using a rear blade as well. ie: plowing and pushing snow. It is annoying to have the rear blade drop when you are using the loader.



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txblu

03-30-2005 22:28:33




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 Re: MF65 in reply to Roger Ball, 03-30-2005 10:56:46  
It's doing as Leon mentioned, but tain't hurtin nuttin is it?

I never liked to keep pressure on hydraulics with the pump off (of any kind) so before turning off my equipment I lower things to the ground anyway.

My MF35 does as yours, with my 5' mower attached, but I'm not going to tear into it for that. Now if it wouldn't lift, or searched, or hiccuped, or stayed up, or something like that, then I'd tear into it. But it works fine otherwise.

Now you have 2 different opinions. Choice is yours.

Best,

Mark

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Leon R

03-30-2005 12:59:57




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 Re: MF65 in reply to Roger Ball, 03-30-2005 10:56:46  
Roger, I have a MF65 as well (for the past 25 years). Mine had the same problem and it is the main lift cylinder that has a cast iron piston and cast rings which are worn out and the hydraulic oil is leaking past when the pump is not running. I fixed mine by removing the cylinder and piston and honing out the cylinder to true it up as you would a engine cylinder. The difference here being the cylinder is a dead end cylinder, think of it as a can, as the cylinder has a bottom to it. next, we made a new piston to fit the new size of the cylinder and used modern O ring and backing ring for hydraulic use instead of the cast iron rings. The piston is fairly simple to make. Any good maching shop could do this for you. I did mine with a friend who had a hand hone and a lathe. It has worked flawlessly for twenty years. My three point equipment does not drop.

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