never ending story

[tarawa]

I made a new PTO lever that seems to have fixed the disengagement problems of my PTO when mowing. I was backing onto my driveway to make some adiustments and when I went to back up, the gears ground a little going ito reverse ( clutch disengaged). Tried other gears and they ground a little. The old girl never did this before. Low and behold the tractor wont move. It is like the clutch is depressed. The clutch pedal seems to have a lot of tension. I took the inspection plate off and looked inside even though I have no idea what I am looking at. Things are turning! Is there anything other than the clutch that can be wrong? It goes into all gears.
Just in case I ordered a clutch kit from Hamilton Bobs.

[Slim140]

Look at your throw out bearing, the graphite may have came apart on it.

[tarawa]

will do

[tarawa]

Is there some sort of shear pin somewhere between clutch and transmission? Clutch pedal still feels fine.

[Glen]

Hi,
Good that you got the PTO to work better.

The clutch on a Cub is not complicated.
The flywheel, clutch pressure plate, and clutch disc turn. The flywheel is bolted to the engine's crankshaft. Stop the engine before doing anything up in the hand hole.

Below is a page from the 1955 Cub owner's manual showing the clutch.

http://farmallcub.com/rudi_cub/www.clea ... e%2056.jpg

If the clutch pedal is tight moving at it's base, it needs freeing by oiling the pivot.

Below is a post that I wrote on, with clutch info. My posts are down the page.

viewtopic.php?f=1&t=102720&start=30

There is no shear pin between the clutch and transmission, it is a solid shaft from the clutch to the PTO in the trans. The shaft with the splines that drive the PTO, is the same shaft as at the clutch.

Look in the hand hole with a light, and see if the throwout bearing graphite looks like the new one in my post, or is worn down, they can wear down from years of use.

Below are pics from TM Tractor.
The 1st pic is the flywheel.
The 2nd pic is the pressure plate.
The 3rd pic is the clutch disc, it goes between the pressure plate, and the flywheel.

[tarawa]

The problem was that there was no free play in pedal. I never messed with the clutch except that I replaced the pedal return springs. I guess it has been like this for a long time....previous owner. I loosened the pedal bolt and now I have a bit of free play an the clutch works perfectly.

[Glen]

Hi,
Good that it is working better.

The 1" of free play is measured at the surface you put your foot on.

Lube the throwout bearing grease fitting with cheap grease, the people on here say, so the oil in the grease absorbs into the throwout bearing graphite.
I like to put a thin layer of grease on the front of the throwout bearing, part way around is ok, the fingers will spread it around.