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Massey Harris & Massey Ferguson Tractors Discussion Forum
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MF 285 PTO 3pt

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JFC

06-04-2006 18:41:31




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PTO runs constantly while tractor is running; to use implement, the tractor needs to be shut off, connect PTO shaft, restart tractor, PTO takes off automatically. Lift arms do not work at all (they are constantly down).




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Big Dean

06-05-2006 08:09:54




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 Re: MF 285 PTO 3pt in reply to JFC, 06-04-2006 18:41:31  
It sounds like you have two problems. The pto sounds like an Independent pto with warped discs in the pto clutch pack. or it might be in the engaging valve but they do not usually give a problem unless the have been taken apart. The hydraulic problems is either a bad leak in the system or the linkage has something broke, bent or out of adjustment. Could be the keeper for the pump control valve return spring has popped off I have a few that did. If I can be of further help email me

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jogl

06-05-2006 03:46:53




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 Re: MF 285 PTO 3pt in reply to JFC, 06-04-2006 18:41:31  
Re: 3ph. see your 175 post.

The PTO on our 285 is "independant". It is controlled by a hydraulically operated clutch which is operated by the PTO hand lever. On this tractor you could have a bad PTO clutch or hydraulic problems causing the PTO problem.

JP.



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