Mf 135 clutch id

Dbrace

New User
1974 mf135 Perkins diesel multi power
I got this tractor from an individual that had just replaced the clutch. The tractor was damaged in a fire and I am trying to get it back in shape, rear main seal was leaking so I split the tractor and am finding an unusual situation for me anyway, with the clutch. all info I find does not show the clutch that was in it. The pto shaft does not go into a clutch disc but the pressure plate has a hub solid mounted to itself, not to a clutch disc. Everything I find shows to use a 9 in clutch disc for pto and a 10.5 orc11 in for the trans. The flywheel I have doesn t show in any pics I can find either.
Don t see how the pto can engage/disengage hooked up to the hub in the pressure plate.what am I not seeing?
Disc looks to be 10.5 in 9 spring plate flywheel has number stamped 31218411
Could this be the wrong clutch or.
Thanks for any help!
 

Welcome to the forums.

How about posting some pictures of what you have for a pressure plate, transmission clutch, and flywheel. Is the input for the transmission a shaft inside an outer splined shaft?

I am thinking that the hub (splined to match the outer shaft?) inside the pressure plate you see is the PTO disc,which will be clamped solidly if you don't have the release bolts installed and tightened to free it.

Do you have the MF 135 Service manual?
 
Some tractors had a HYDRAULIC PTO clutch pack option in the rear diff case, that's probably what you have. Look at the PTO shift lever if it DOES NOT have
ENGINE/NEUTRAL/GROUND drive positions on the six bolt side cover that the two stage clutch tractors use, you have the HYDRAULIC PTO clutch pack option that never used
ground drive. The clutch pedal is not used to turn off/on the PTO as it could be turned off/on by the shift lever at any time.
 
(quoted from post at 20:38:32 08/08/23) Some tractors had a HYDRAULIC PTO clutch pack option in the rear diff case, that's probably what you have. Look at the PTO shift lever if it DOES NOT have
ENGINE/NEUTRAL/GROUND drive positions on the six bolt side cover that the two stage clutch tractors use, you have the HYDRAULIC PTO clutch pack option that never used
ground drive. The clutch pedal is not used to turn off/on the PTO as it could be turned off/on by the shift lever at any time.

Right, I was thinking of the two stage clutch to the live PTO.
I spaced it on an independent PTO one. The split torque clutch has a hub in the center of the cover plate.
 
I've even seen a 135 with the same type single clutch, transmission driven PTO drive like the TO 20 and 30 have, totally useless far as I'm concerned. I'd MUCH rather
have the two stage or hydraulic PTO.
 
Thanks for the reply
The pressure plate does not have the cage bolt holes and there is definitely not a small disc for the pto, yep looked at my service manual and that s why I feel so lost.

You guys are awesome so much info so fast, I m sure I ll get it figured out with all the knowledge here!

I m starting to think it may have the hydraulic pto, the tractor had a lot of options power steering multi power etc so I will look tomorrow at the pto shifter. I know the pto shift lever is a lot longer than other 135 s I ve been around.
I ll try to get some pics too

Thanks again
 
Do you have the MF 135 service manual # 1448813? There is info on the Split Torque Clutch for the Independent PTO for the 135 & 150 in the manual I have. It is in the clutch section after the dual clutch section. Here is a clip from the parts book.

mvphoto108385.jpg
 
It sounds like your tractor has Independent PTO instead of Live PTO. It has a hydraulic clutch pack behind the hydraulic pump that engages and disengages the PTO instead of a sliding coupler.
 
(quoted from post at 03:47:41 08/09/23) Do you have the MF 135 service manual # 1448813? There is info on the Split Torque Clutch for the Independent PTO for the 135 & 150 in the manual I have. It is in the clutch section after the dual clutch section. Here is a clip from the parts book.

mvphoto108385.jpg
Thanks
I didn t look far enough and just had a blonde time!
It all makes sense now, I didn t realize there was that type of pto I thought the pto would all be the same. Therein lies the root of most of my problems, when I think :p
Thanks to all for all the help. I really appreciate it, and thanks for not smashing me for being a bit dumb on this. It s humbling but great to know there are folks who are willing to help.
 
Another question for you guys if you would.
The clutch disc, by the drawing it looks as if the wider or thicker part of the splined hub goes i to the rear or away from the flywheel. When I took it out it was positioned opposite toward flywheel -the service manual pic is kinda hard to determine, it shows a cross section that my old peepers aren t clearly defining which way it goes.
So which way do I get it correctly in place?

I m really toying with replacing the trans input seal, but looks like a hassle of a job having to drop the lower shaft out the back, but it s been there a long while so opinion on that also please

Thanks
 
The MP models are easy to get the PTO input shaft out for seal replacement, NO shaft dropping needed. If the seal is not leaking now I'd leave it alone as it takes
special tools to remove and replace the seal. If I recall correctly the split torque main disc is centered, meaning it can go either way. Place the disc in the flywheel
by hand and MAKE SURE that the long side DOES NOT contact the pilot bearing BEFORE the facing contacts the flywheel surface, if it DOES, then the disc NEEDS flipped
around for correct assembly.
 
(quoted from post at 04:54:43 08/10/23) The MP models are easy to get the PTO input shaft out for seal replacement, NO shaft dropping needed. If the seal is not leaking now I'd leave it alone as it takes
special tools to remove and replace the seal. If I recall correctly the split torque main disc is centered, meaning it can go either way. Place the disc in the flywheel
by hand and MAKE SURE that the long side DOES NOT contact the pilot bearing BEFORE the facing contacts the flywheel surface, if it DOES, then the disc NEEDS flipped
around for correct assembly.

Thanks to you all
It helped a bunch!
 

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