How 2 assemble/adjust early Belleville Dual Clutch MF/MH 50

Hello anyone/everyone. I have a 1960 TO-35 Special ( Single Clutch) I acquired a Dual Clutch Trans and Dual Clutch for it about 20 years ago but just never got around to converting it.
I just got done rebuilding the trans and am now doing the clutch.
It is an early series Belleville spring only clutch(No T-bolts, no side coil springs.
My question is now that have it cleaned up with the new discs installed, are the 3 bolts that go through the stamped steel release fingers tightened strictly for the finger height measurement or is there some other consideration and what is the finger height measurement.
I have the service manual for my TO-35 but it does not discuss this early style Belleville spring only clutch even though I am told that the early 35s had this clutch. I hate to spend a fortune on a service manual for the 50 that I scavenged the trans/clutch from just for these few tidbits of info.
Any knowledge you could share would be greatly appreciated.
 

I did. The only thing I came up with was the Belleville/Coil Combo pressure plate but couldn't find anything on the Belleville Spring only pressure plate. The release fingers on the Belleville spriing only are completely different than the combo unit.
 
Most swap the clutch out to the later style clutch, for the early, and late MF50 the clutch assembly used is part # 512355M91, and clutch disk part # 516068M91
 
I'm looking in my shop manual for the 35, 50 and 65. It says here to use special tool
FT 352 to measure a zero clearance between the tool and the release fingers.

The secondary clutch adjustment is .090
 
In the Massey Ferguson forum try typing in:
mf 235 clutch adjustment 11 inch dual.
Possibly this heading "mf 235 clutch adjustment 11 inch dual" in the archives shall assist you?
Bob...
 
Thanks for the replies but I've already read that post. As you can see in the pictures, the clutch they are adjusting is the Belleville/Coil Spring Combo Series. The one I have, the earlier series is a Belleville Spring only. No coil springs on the side, no T bolts during re-assembly, stamped steel one piece release levers as opposed to the articulated levers on the combo.
mvphoto27830.jpg


mvphoto27831.jpg
 
Even the Big Dean cd doesn't show how to adjust the Belleville style dual clutch, he swapped them out to the one with the part number clutch, and clutch plate I provided.
 
Is this the clutch with the 2 metal cone shaped springs, if so they are supposed to be color coded for correct
placement. The tool fits on the ledge lip and sets all 3 arms to same setting.Mine had no colors on a 57 to35.
 
Yes, the cone shaped springs are called Belleville springs. Any info as to what height the tool sets them at? If I just know the correct height, I can make a tool or just use a dial indicator on a magnetic pedestal mount.
Bob
 
Here's just a thought...

If there was a replacement assembly, then it must have been engineered to work
within the constraints of the existing bell housing, propeller shaft clearances,
linkages etc. The biggest factor here is to make sure the clutch bearing runs true
and square. The special tool asists with that by ensuring all adjustments are
equal.My guess would be that the clutch/pressure plate/flywheel distances for
engagement/disengagement are pretty similar.

What if you used the nominal adjustments for the combination assy, and used your
dial guage to ensure they were the same all around the clutch plate? Yeah, you
might have to fiddle with adjusting the linkage some, and you won't really know
until you get the tractor back together, but doing something might beat waiting
around for the results of a snipe hunt.

I mean, it's only the clutch, we're not talking crank bearings here.
 
(reply to post at 07:20:15 09/22/15)
ook what I was able to rustle up! The head mechanic at the nearest Massey dealer found it when I mentioned the Special tool FT-352 that you mentioned. He's worked there for 35 years and says it hasn't been out of the tool box for at least that long.
In the process of using this tool, I was able to determine that the release levers are badly worn but the good news is that they are available and are on order. I assume that the manual you referred to shows this in place and that it is the side that has the legs closest together that is used for my clutch. Is that correct? The wider side is too wide to get both legs on the flywheel. Thank you for the help. Bob
mvphoto28068.jpg
 
Man, you oughta go buy a lottery ticket!

Yes the side with the closer together legs is the side you want use. For posterity's
sake, why don't you take the set nominal dimension and put it in this thread. You
probably don't have the last dual Belleville in existence.

But then again, maybe you do!

Glad it worked out for ya.
 
Better yet, post up a tracing of that tool, with the dimensions written in so the next guy can make up his own...we're all in this together, right?
 
I will do both. But here's an update: The dealer called me back and said that when he tried to order the levers and pins, they came up as no longer available. The good news, he had 2
I've got another one coming from Bedford VA, leaving 1 there s of yesterday. I was able to get the e pins from a dealer in Calgary Canada. Yes, my lucky day. I can see now why everyone else just swapped out to the combo series clutch/plate. You can get a rebuilt pressure plate llike mine(WITH NEW LEVERS) so to anyone that needs them, find out who is doing the rebuilding and ask them who the source is. I've got some things to take care of then I'll post the dimensions and tracing
 
Any chance of you giving us the dimensions as some of us have a CLUTCH to replace this winter and writing down the info STAMPED on the TOOL?
Thank you:
Bob...
a202001.jpg
 
I will try to get it done today. I have been swamped with a few issues and I need to return the tool to the mech that I borrowed it from. Lest I forget, for the Belleville only
type clutch, you would use the side that doesn't have the three steps. I took a picture to demonstrate the proper placement, then the camera battery died and I can't find the cable. I will post that at the same time as the measurements. Please don't hesitate to remind me if you don't see it posted by Friday.
Bob
 
Here it is. As you can see Art and Penmanship were not my best subjects. If you save the picture to your PC and use any windows pic viewer you can enlarge it enough to read the numbers.
 
(quoted from post at 15:19:26

I am GRATEFUL to have found this thread!!! Did I miss something, I don't see where you included the measurement for the one side of the tool (non-graduated side for Belleville only type dual clutch). I only see the measurements for the graduated side that didn't apply to your clutch (or mine, since it is the same as yours).
Could you please post that?
 
I am in the middle of something right now but when I come in later today I will look for my original pic and I will find my clutch tool. The one I started with was borrowed, so I made one of my own. I will measure that and post it. Sorry I can't do it immediately.

(quoted from post at 07:14:58 03/08/17)
(quoted from post at 15:19:26

I am GRATEFUL to have found this thread!!! Did I miss something, I don't see where you included the measurement for the one side of the tool (non-graduated side for Belleville only type dual clutch). I only see the measurements for the graduated side that didn't apply to your clutch (or mine, since it is the same as yours).
Could you please post that?
 
(quoted from post at 07:14:58 03/08/17)
(quoted from post at 15:19:26

I am GRATEFUL to have found this thread!!! Did I miss something, I don't see where you included the measurement for the one side of the tool (non-graduated side for Belleville only type dual clutch). I only see the measurements for the graduated side that didn't apply to your clutch (or mine, since it is the same as yours).
Could you please post that?

I'm still jammed up for time. I haven't forgotten an will try my best. We've done a lot of remodeling in the house aND I need to get the entire place ready for my son's wedding in 4 weeks. Bear with me, I will do my best.
Bob
 
I'm still jammed up for time. I haven't forgotten an will try my best. We've done a lot of remodeling in the house aND I need to get the entire place ready for my son's wedding in 4 weeks. Bear with me, I will do my best.
Bob[/quote]

I understand. Thank you for trying for me amidst all that you are doing!
 
I have tried a couple of different picture editing programs I have to make the picture with the measurements bigger, but I can't get the measurements to be readable.
 
OK - So, if you still get a chance to find the measurements, that would be great! I was able to speak to a mechanic over the weekend that said he thought the clearance for an early model Ferguson TO35 dual clutch was 2.462" - 2.666". Since you have the tool, maybe you could confirm if this is correct. I plan on trying to get the clutch back in and adjusted some time near the end of this week. I understand if you are not able to get to it.

For posterity - If it works out with those measurements, I will confirm so others have the info too.

Thanks!
 
(quoted from post at 11:55:18 03/13/17) OK - So, if you still get a chance to find the measurements, that would be great! I was able to speak to a mechanic over the weekend that said he thought the clearance for an early model Ferguson TO35 dual clutch was 2.462" - 2.666". Since you have the tool, maybe you could confirm if this is correct. I plan on trying to get the clutch back in and adjusted some time near the end of this week. I understand if you are not able to get to it.

For posterity - If it works out with those measurements, I will confirm so others have the info too.

Thanks!

I still can't find any of my original drawings nor can I find my tool that I made from the original. When I have a chance, I will drive back out to the dealer and measure, trace, photo the tool again. I might even ask if I could buy it from them since the chief mechanic/service manager said that he hadn't used it in the 41 years that he had worked there.
 

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