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MM 445 clutch problems


 
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Duane Kaufman
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Joined: 05 Jul 2006
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PostPosted: Mon Jul 08, 2013 8:25 am    Post subject: MM 445 clutch problems Reply to specific post Reply with quote

Hello All,
I thought I would ask on this board, rather than assume I know what is wrong with my 445, deferring to the greater knowledge-base present.
Yesterday I was mowing with my 445, and put the tractor in reverse and left out the clutch. When I pressed the clutch in again to stop, the tractor kept going, but I was able to pop it out of gear to stop it.
Pressing on the clutch now has a vibration to it, and it does not seem to disengage (I have to start the tractor in gear if I want to move it).
I am assuming the clutch throwout bearing has failed, but wanted others to weigh in.
Thanks,
Duane
 
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Alan K
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Joined: 09 May 1999
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PostPosted: Mon Jul 08, 2013 9:48 am    Post subject: Re: MM 445 clutch problems Reply to specific post Reply with quote

The throw out bearing was my first thought. I dont remember if they are like some of the other models like the M5 that have a plate under the clutch that is removeable (Im guessing they probably dont). If there is a plate, that might be a place to look and see if you can see anything.
 
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JOCCO
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Joined: 14 Feb 2003
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PostPosted: Mon Jul 08, 2013 3:39 pm    Post subject: Re: MM 445 clutch problems Reply to specific post Reply with quote

Due check the clutch pedal travle and adjustment. Could be a host of possibilites.
 
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Charlie Bilerx
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PostPosted: Mon Jul 08, 2013 4:23 pm    Post subject: Re: MM 445 clutch problems Reply to specific post Reply with quote

Duane Kaufman,
I agree that your throwout bearing may have disintegrated. It could also be the pressure plate collapsed, or lost fingers.

Right now I have a 335 here that the pressure plate collapsed and soon I will be splitting the tractor. Normally I always install a rebuilt pressure plate, throwout bearing, and grease hose when I do a clutch job. Mower tractors normally eat the pressure plate due to the foot riding the clutch.

Happy wrenching.
Charlie at
Moline Parts
 
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Duane Kaufman
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PostPosted: Tue Jul 23, 2013 1:55 pm    Post subject: Re: MM 445 clutch problems Reply to specific post Reply with quote

Hello all,
I have verified that the problem I am having is _not_ due to travel or clutch adjustment, so it looks like I'll be splitting the tractor.
This tractor doesn't see much use (less than 100 hours/year) The Ampli-Torc needs to be _completely_ warmed up so it does not slip in low-range.
Now comes a more philosophical question(s):
1) With the tractor split, should I go and re-build the Ampli-Torc? (This tractor has a loader mounted on it)
2) How much more effort (beyond what needs to be done to fix my clutch problem) is re-building the Ampli-Torc?
3) Are Ampli-Torc parts available? From where?

Appreciate your hard-fought wisdom on this matter.

Thanks,
Duane
 
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