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1960 Massey Ferguson 65 clutch rebuild.

W

Welch333

Member
I am have trouble rebuilding my clutch assembly. I have new 9" friction disc and a new 11" friction disc. Everything else I reusing for the old clutch assembly. I'm looking at the Manuel and going step by step. But every time I put the clutch together the 9" friction disc is so tight. I cant make any ajustments to the friction disc with alinement tool. I'm thinking I have the wrong 9" friction disc or something. Maybe it is to thick. I have try flipping the Belleville spring around. Which made it loser but I think that is not the right way. In the Manuel it said to Place the clutch cover upside down on the table. Then place the 9" pressure plate Belleville spring in the cover with the convex side up. To me, that is telling me. When I place the Belleville spring in the clutch cover and I am looking down at it. the spring hump up part should be up in the air and down like a bowl. I did this clutch 10 time and it is doing the samething. It has to be ether wrong 9" disc or Belleville spring wore out need to be replaced. May coil springs are bad too. What do you think?
 
I believe you are putting the belleville spring in correctly,
but it is a little hard to tell from your description. The
outside diameter of the spring should be the only surface
touching the clutch cover when you put it together. The
spring would then resemble an upside-down bowl. Be sure
it is centered or nested into the groove that is cut into the
clutch cover.

The 9 inch pressure plate is next to be installed. It can also
be turned wrong. The side with the shoulder goes toward
the belleville spring. Again, make sure everything is
centered and nested together.

One thing that may be causing you fits is the three
adjustment screws for the 9 inch disc. Back off the lock
nuts and run those screws as far as you can into the
primary pressure plate. They will need to be set to the
correct height after the clutch is mounted to the flywheel.

I guess you could have the wrong belleville washer, but I
doubt it. If you can see any signs of paint left on it , you
want to see blue. The 50 and 35 models color code for the
spring was red.
 


Thanks for the reply Eric. So you say only the outside edge of the Belleville spring should be touching the clutch Cover. I have that, that way. The problem is when I put the clutch cover, Belleville spring, pressure plate, 9" friction disc and the false flywheel together into the 11" pressure plate. And I do also have the adjustment screw out the way. There is no movement of the disc with or without the T-screws in or out. The thing with the Belleville spring is that the whole inside circle is pushing down on the pressure plate. Which makes for no movement.
 
When you have the "T" bolts installed and tightened down evenly
to the point where all of the coil springs are completely
compressed is there an air gap at the head of the adjusting
screws which push on the 9 inch pressure plate ?
 

Eric just setting here thinking about it. Before I even put the clutch plate, spring, disc, false flywheel in to the pressure plate. When I sandwich all that together it super tight then. Once I place it in the pressure plate nothing change. It has the same tightness as it did before I placed it in the pressure plate.
 
Okay, that is why the disc is still tight.

You need to adjust those three screws until they just touch the 9
inch pressure plate. Then evenly adjust them until they move that
pressure plate just enough to let the clutch disc slide. It shouldn't
take much adjustment after the screws touch the pressure plate.

Now you should be ready to put the 11 inch disc on and insert
the alignment tool.

Don't forget to readjust the three screws after you have the clutch mounted to the flywheel.
 
It should be tight at that point. The belleville spring is applying
pressure to the pressure plate, then to the disc, then to the false
flywheel. It is the same pressure that will be on the 9 inch disc
when you are operating the p.t.o. with an implement.
 
You might post to the Massey Ferguson forum in
discussion forums and get more input and maybe some
pics plus check the archives.
 
(quoted from post at 20:46:30 12/08/14) It should be tight at that point. The belleville spring is applying
pressure to the pressure plate, then to the disc, then to the false
flywheel. It is the same pressure that will be on the 9 inch disc
when you are operating the p.t.o. with an implement.
Click to expand...

Thanks Eric, I did what you told me to do today and it worked just like you said. I had right the way I had it put together. I just was afraid that I was doing something wrong the way it was so tight. I guess it needs to be that tight so the PTO would work. Thanks agian.
 
Glad I was able to help.

Another thing you may want to do is set those three adjusting screws to .070 instead of the .090 mentioned in the book. If you use .070 the result will be a more comfortable to use clutch pedal. It will lower the point where the primary disc engages as you are raising the pedal. All other clutch and pedal adjustments are done by the book.

If you don't like the feel of the resulting lower pedal, you can always adjust back to the .090 through the inspection cover later.

I like the lower clutch, feels more comfortable to me.
 
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