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35 pto clutch

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Bob

07-12-2004 16:14:34

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I have been trying to resussitate a long neglected MF 35 3 cyl perkins, dual clutch. Finally today I was working it for the first time, out mowing grass with my 5' rotary mower for the first time, burning off all the slobber from the exhaust,having a good ol time. After about 15 minutes the pto clutch startied slipping. Is there some adjustment I can do to get me through the summer.
I've been to Big Dean's site and have seen his picture titled "PTO internal clutch adjustment for dual clutch" Would adjusting these bolts help? How many bolts are there? I do not understand how a dual clutch works without seeing it apart. The pedal connects directly to the throwout shaft. You have to really stand up on the pedal to disengage the pto clutch. There is not much travel in the petal between when the pto clutch starts to disengage and the pedal bottoms out- about 1 1/2 inches I would quess.
I feel attached to this tractor. It's really rough, never thought I would see it run, but as it is now it starts right up on first crank, has a fair amount of blow by, oil pressure of 40 at hot idle, strong lift,leaks some gear fluid from the bell housing, and makes some really frightening noises
It's hard for me to haul it around and I have it at a pretty remote property. An on site quick fix would be best at this point

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parky

07-17-2004 08:11:00

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Re: 35 pto clutch in reply to Bob, 07-12-2004 16:14:34

We got to get organized on this dual stage clutch setting stuff.
I have been reading the MF site for years now and there are continual questions and answers about those darn dual stage clutches!
Most guys are giving typed instructions on how to adjust the clutch, but if you are not familiar with terms and how the tractor looks it can be difficult to follow.
LET"S PROMISE EACH OTHER - the next guy to do a clutch adjustment has to take some digital color pictures of the location etc. of the clutch setup so everyone can understand what we are looking at.
Thanks much, I have picked up some real good tips from the site, let's keep it going!!

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DP South Wales UK

07-13-2004 14:43:40

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Re: 35 pto clutch in reply to Bob, 07-12-2004 16:14:34

Hi Bob,
Once the belly plate is removed you'll be able to see the clutch unit (engine stopped). Expect to have some black greasy oil around the hole. Is there any evidence of oil on the clutch unit?
You will see the 12 springs, most likely yellow if they have not been changed for the smaller number of red ones. You are no doubt aware that the second stage of the pedal requires more pressure to press. Have an assistant press the pedal to the point where it goes solid. If the coils of the springs are touching (coil-bound) the the pedal will go no further. Disengagement of the PTO at 1 1/2 to 2 " above the foot plate is ok. Adjusting the three internal screws inwards will allow the pressure plate to move further away from the pto plate. It's a bit tricky. You'll need 2 GOOD 1/2" spanners and a bar/lever to stop the flywheel turning. The clearance with the pedal free is about 1.5 to 2 mm or about the thickness of 2 hand hacksaw blades. If the plate is dry and clean, the pto should stop on it's own. If it drags it does seem that there is oil/grease on the plate. Again have someone press the pedal and hold a fence post or something against the pto to try and stop it. This will give you an idea if it's a light drag or semi drive.
Hope this helps DP

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sibby(Aus)

07-12-2004 21:13:39

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Re: 35 pto clutch in reply to Bob, 07-12-2004 16:14:34

Bob, Check your clutch adjustment, i am also concerned that gear oil you can see leaking in your bell housing can go onto your clutch plate and cause it to drag and also slip under load. Do you have a slip clutch on your mower that could be slipping under load? cheers for now.

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Fordfreak45

07-12-2004 23:54:59

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Re: Re: 35 pto clutch in reply to sibby(Aus), 07-12-2004 21:13:39

I just got finished splitting my MF35 to replace the 2 input shaft oil seals... i was having the same problem- tranny oil getting in the bellhousing and making the clutch worthless

Being on a super-low budget i just sprayed everything down real good with brake parts cleaner to get the oily mess gone... its not too bad a job.
I'll post the results of this once i figure out how this stupid canister filter goes back together. (pretty sad, i can split the thing in 2, tear the tranny half apart, get it all back together... then cant figure out the dang oil filter :-/ )

The seals are National part # 51053 and 450400.. or 6903 instead of the 450400 when ya hafta tear it down, about $7.50 each at most auto parts stores in the U.S.

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Chip

07-13-2004 10:44:51

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Re: Re: Re: 35 pto clutch in reply to Fordfreak45, 07-12-2004 23:54:59

My best suggestion regarding that oil filter, is return it, and buy the spin on adapter, and filter that mounts in the same position. I used the old canister type for 18 years, and it's a pain. Not to mention, I think the new setup does a better job filtering, and the time spent on oil change is much less.

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txblu

07-14-2004 07:22:56

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Re: Re: Re: Re: 35 pto clutch in reply to Chip, 07-13-2004 10:44:51

How much is the adapter and where did you get it. My NAPA 1188 cartridge showed a picture of the parts that are supposed to be in the cannister to make the filter work properly and also mentioned changing to a spin-on by installing an adapter.

Thanks,

Mark

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Chip

07-14-2004 09:29:39

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Re: Re: Re: Re: Re: 35 pto clutch in reply to txblu, 07-14-2004 07:22:56

I bought mine at my local Massey dealer. With adapter, and filter, I don't think I spent $50.00.
Installation probably took all of 30 minutes. I wish I'd done it long ago, but I was trying to keep things as original as possible. Age can change perspective huh?

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txblu

07-14-2004 09:44:41

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Re: Re: Re: Re: Re: Re: 35 pto clutch in reply to Chip, 07-14-2004 09:29:39

Yes it can. Restoration projects can go that way too. The first 2 tractors I bought I restored. The second 2 I touched up the paint plus fluids. The third 2 I changed the fluids but otherwise use them the way I bought them. The MF 35 was one of the latter.

Thanks for the info.

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Chip

07-15-2004 10:10:31

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Re: Re: Re: Re: Re: Re: Re: 35 pto clutch in reply to txblu, 07-14-2004 09:44:41

I had grand ideas about restoring my 35, but in the 21 years I've owned her, I've just serviced her, and performed repairs. It might end up rebuilt, but not at the same time. There's work to do, and I don't let her rest too much. Love that Perkins diesel!

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