FCUB clutch problem

Anonymous-0 · Feb 12, 2014

I have an elderly man down the road that put a new clutch and throw-out bearing in his FCUB Ser # 54212, and when he started it and tried to use it, the clutch started making all kinds of noise. I pulled it apart for him and found that the clutch pressure plate fingers were broken and cracked and I could see where they had made contact with the throwout bearing carrier, also the clutch disc was in backwards (nose to engine). Do you have any idea what could have happened other than backwards disc? Thanks- john

old · Feb 12, 2014

New or used pressure plate?? If used it may have been bad when he put it back together and he did not see the parts cracked

Anonymous-0 · Feb 12, 2014

all new from napa auto parts

RTR · Feb 12, 2014

(quoted from post at 03:58:23 02/13/14) all new from napa auto parts

I don't know about that but I know we have a 1971 Cub that we put a new clutch, press. plate, and TO bearing in it last year. The parts were the kit from A&I and they fit in nicely. I adjusted everything per the manual and we used the tractor 3 times since. I pulled it out of the shed the other day and it started shaking as you let off on the clutch....like a weak pressure plate. GAH!! What gives???

old · Feb 12, 2014

Maybe bad right out of the box. Or depending on the pressure plate some come locked in place and they need to have the locks removed but that would or should have been locked down so it would be in the released position

old · Feb 12, 2014

Might be badly rusted pressure plate or you got some of theses all to common bad new parts. You might try pulling the starter and try looking in and see if the pressure plate is stuck in the released position. Also check the pressure plate bolts to make sure they are still tight

Phil Tibbetts · Feb 12, 2014

A lot of NAPA parts are coming from China now. Just saying.

charlieu · Feb 12, 2014

I installed a clutch in a CUB last fall and one item that I discovered was the bushing used as a pilot bearing was wore out. I have also seen this bushing wore out in a 404 series of tractor. The bushing was so wore out that when you pushed in the clutch pedal the outside edge of the clutch disc rubbed against the inside of the recess of the flywheel and made lots of noise. You can see the bushing in this picture. Measure the size of the shaft and then measure the inside of your bushing and you will see what I'm talking about. There should be about .005- .010 clearance. Let me know what you find. Charlie U

John M · Feb 12, 2014

The disc in backwards caused the problems, but Im surprised any of it didn't break or crack when he tightened down the pressure plate.

Anonymous-0 · Feb 12, 2014

Thats kind of what I thought too

Janicholson · Feb 12, 2014

Guessing!
The disk in backwards causes the pressure plate to touch it too soon as the Pressure plat bolts are tightened. This causes the "effective" thickness of the plate to be 1/3 or more thicker as the torsion springs press against the flywheel. THe release levers are pulled way in toward the flywheel and become over center.
The free play is then adjusted (a lot) to account for this wrong finger position.
When started, the clutch does not even begin to disengage, and the throwout pushes through the fingers crashing them into the bearing carrier and ripping things up.
Not good. Jim

Anonymous-0 · Feb 12, 2014

thats sort of what i figured. thanks

rterry · Feb 15, 2014

be sure to use a clutch alinement tool before you stab it back together sure makes it eaiser

mkirsch · Feb 15, 2014

I put my 1952 Cub back together with the clutch disk in "backwards" the first time, and it fell right together with no problems.

The only reason I knew the clutch was in backwards, was because I had an "oh, sh--" moment in the middle of the night, and slid it back apart to check.

I don't know if it would've caused a problem or not. We'll never know.

FCUB clutch problem

Anonymous-0

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old

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old

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