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M clutch Problem????????

T

Trapman

Member

I've got a problem with my 1950 M and the clutch seemed to work fine when I parked it but now after sitting for 6 weeks when I let out the clutch it starts to move but just sits there with no change to the engine speed. Can this Clutch stick or something? Anything I can try?
Any advice would be appreciated. Thanks....
 
Check the free play first. With your hand (not running, and blocked if not flat ground) push on the clutch pedal. It should move easily for about an inch from the platform contact point where it rests when your foot is off of it. If it pushes pretty hard immediately, adjust the rod/clevis to have that inch of free play. Now try it normally to see if it works correctly if not, the clutch will probably need to be replaced. It can be done without splitting the tractor from underneath. there are many posts on this sight (search For box) to get into the replacement. A manual is also a good idea (available here on the top left) JimN
 
There is free travel but upon looking through the inspection hole and operating clutch pedal by hand it looks like the three arms on the pressure plate vary alot in clearance from the throw out bearing are these adjustable and if so were should they be in relation to the bearing???
 
Yes, they are adjustable. Check the archives to find the corect adjustment.
I would suggest that you drop the pump and see what you have. The clutch can be replaced from below without splitting the tractor.
The easiest way to reinstall the pump is by using threaded rods to lift it back into place.
 
It doesn't push that hard but I'm trying to figure out if I can do anything before I tackle replace the clutch. I agree I should get a manual,what's the best one? It seems odd that the clutch did not go bad while I was driving, instead while sitting. I appreciate your input.
 
I should have added that the belly pump has been removed and it does have live pump. I'll do some looking into the archives. Thank you....
 
If your pump is out, go for the clutch from underneath. The fingers being unequal is a sign that all is not well. With the tractor shut off, look at the clutch assembly with someone pushing it in and out of engagement. The fingers are usually within 1/32" of equal. If some fingers stay away from the Throwout bearing, there may be pieces of driven disk facing loose. Adjusting the fingers is done before assembly. JimN
 
Good News, I did what you guys told me and I adjusted the linkage to 1" freeplay and the adjusted the fingers to about 3/16" clearance from throwout bearing and it now seems to work fine. Don't no how just sitting threw things out of whack but I'm sure thankful for all great advice on this great website. Now to figure out how to get 5th gear to work (does'nt seem to go all the way into gear). Thanks again...

P.S. going to look at another M tommorrow...
 
I would bet there was rust or stuck fingers. This would keep them from putting pressure on the disk. (and they would be uneven. Good fix.
Fifth can be locked out with a bolt in front of the shifter tower to the left side but close to the tower. The bolt is used to prevent fifth when the tractor is used with steel wheels. The lockout bolt is long enough to stop the forth/fifth gear shift rail from moving forward into the fifth position, while allowing it to move into forth.
If this is not the cause (quite possible if it had steel on it) the 4th 5th sliding gear has worn splines inside it, that shift onto matching splines on the input shaft (also worn) Replacement gear and input shaft with intermediate bearing as well are the only solution to that. Some possibility of very worn or bent shifter fork is possible, but less likely.
The gears can be replaced W/O splitting the tractor, but the top of the tranny must be pulled. JimN
 
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