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MF65 how to free stuck PTO clutch?

C

Cow

Member
As the subject says I have a Massey Ferguson 65 and I can't get the PTO clutch to disengage. Adjusted the pedal linkage and free play per manual, then took the inspection cover off and adjusted the screws on the clutch... brought the clearance all the way down to .060 based on what I'd read online but no dice. Pedal is now difficult to press all the way down and PTO still not disengaging.

Anything else to try before I start tearing it down for a split? I'm assuming it's just seized up.
 
If the DISC facing is coming apart, and doubling up that will keep it from stopping. A cracked PTO pressure plate will cause trouble too, had that happen on a 265 once..
 
Good evening Cow .....
My MF 35 X gave me the same challenges as your MF 65 ....

I finally had to split the Tractor ...there were no Components in the DUAL CLUTCH ASSEMBLY after 6000 + hrs of hard operating that were not totally outside serviceable limits..

As I had to totally rebuild the 6 speed transmission, I installed a NEW DUALL CLUTCH assembly as per the MF Service MANUAL.
Even the adjusting CAP SCREWS had been contacting the SECONDARY PRESSURE PLATE..
The Clutch Release bearing carrier had even been contacting the finger's of the SECONDARY PRESSURE PLATE..


All operates well.

Bob ... 1963 MF 35 X
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As I started to dismantle the Clutch assembly....well
The OIL SEALS (Both)had failed on the input drives to the Transmission..
Tooling was machined to install OIL SEALS..


Bob..
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.

There is a very good youtube channel called 'bundy bears', an Australian guy who repairs many Ferguson models. Complete tear downs and rebuilds. Helped a lot getting my TO35 gearbox stripped an rebuilt (water damage on many bearings).

Here's your clutch tear down and setup
https://www.youtube.com/watch?v=AZoe6RGbDl0
https://www.youtube.com/watch?v=eEndq-Oc_mc


If you have the leaking seals discussed in the other replies,skip ahead in this teardown to 17minutes to see the steps in getting the input shafting seal sub-assembly out of the case (it's an involved process)
https://www.youtube.com/watch?v=zF_u1DyZDpE
https://www.youtube.com/watch?v=Pva-_6acAmE

.
 
Well, I think I see why it wouldnt release. Im also seeing chunks out of the flywheel but not on a mating surface or anything. Is that still reusable? Looks like the last person in here reused it, the chunks arent there.


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Good day Cow......
Each to their own thoughts......
It's your $$$$$'s........

I would leave FLY WHEEL as is.......:)
Definitely, I would and I have replaced the entire Clutch assembly......

I'm sure you did not have fun splitting your Tractor......
Replace the Clutch assembly as an entire unit....

The SERVICE MANUAL is a MUST to HAVE....

There are highly trained individuals here on YT that can also coach you through the procedure of the Clutch installation process..

I'm NOT a Trained MF Technician ...

Bob..

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(quoted from post at 13:15:52 04/22/21)
<img src=https://www.yesterdaystractors.com/cvphotos/cvphoto85971.jpg>
Click to expand...

I see that special tool in the service manual, I dont have one. Looks like that one is home made. What are the measurements?
 
Used to set Primary Clutch on MF 35 ..Dual Clutch assembly..

I would check with a Trained MF Technician as to if these measurements shall work on a MF 65..??

Bob..
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I got my flywheel back from the machine shop and am just about ready to put this together but Im wondering about the correct spec for the clutch fingers. Found another possible measurement elsewhere in a thread from a guy working on a 135. Im also seeing that clearance matches up with the solid height max spec in my service manual. Is that the measurement Im looking for? My two possibilities seem to be 1 or 1 9/32

Im noting there is a paint mark from the factory on the adjustment bolts and my rough measuring without having made a tool yet looks pretty close to 1 9/32.

Can anyone advise?


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