Clutch stickn B

Hossman

Member
Hey guys, I was wondering if any of you fellers had any experience with a clutch sticking on the lil B? Got this lil jewel couple years back when the feller that owned it hired me to overhaul the steering box.(The ball bearings had become so wore they fell out there race and jammed up the worm so the steering wheel flat locked up on him.)Anyhows it had been used regular as a mower and my pa has used it regular for the same. The clutch wasnt right from the get go, not releasing when the peddle was pushed and if you hit both footbrakes suddenly it releases. I thought maybe with steady use she would loosen up but no such luck. I checked finger clearences and they are good, also gave her a small pump of grease up in the insp. port but that didnt help anything. I currently have a wc tore down in the shop and am a few weeks from gettin that put together but plan on splittin the B when done with that project and having a good look see. What I aint gettin is when hittin the brake pedddle and popping the clutch loose it will shift fine for a while then go back to stickin til the brake peddles hit again, what on earth can be causin this hang up- the throw out bearin goin bad? Should i just replace everything, press plate clutch and throw out bearing when shes split? Im leaning on total replacement but would value the opinion of any of you thats been into these lil Allis's. Thanks for any help, Sincerely, Hoss
 
If when you take it apart if the clutch is grease/oil free I would look for trouble elsewhere. Lets start in the front and work towards the rear. Look at the pilot bushing, is it worn or dry, if so could be causing shaft to turn. Next look closely at the shaft splines for a notch where disc drives the shaft, when released the disc will move very slightly back away from flywheel, it must be free to move/slide on the splines. The next thing to check is a little more difficult, Does the tractor have hydraulics on it? If so it will have thinner oil in it than a tractor without hyd. Thicker oil will cause drag on the gears and help stop the input shaft from turning. When tractor is running and not in gear and you push pedal down this drag will stop the shaft from turning so you can get transmission in gear.Is the transmission full of oil? When the tractor was new there was a little preload on the bearings in transmission that also create drag. To back up some also look at the flywheel and make sure it is oil/grease free and smooth, no deep grooves. Keep us posted as to what you find!! Mark
 
You know this could be a 60 + year old tractor and anything could be the culprit. Just thinking simple here but what about the spring on the pedal that may be weak, broke and or missing that doesn't release the pedal well enough to disengage the clutch. Years of dirt and grim cause many problems and covers up many more. Good luck on this and keep us posted.
 
Common problem with any tractor. On the B and C there is a little lock lever to lock the clutch down to help with that problems due to rust locking it up. Or you could have a bad rear main seal which causes oil build up and that to will lock them up some. A good spraying of brake cleaner spray into the clutch area can help of caused by oil and grease build up
 
Guys, Thanks so much for the advice an help. Ill let ya know whats goin on in a couple weeks when i get her split. Hoss
 
the crank is hollow and drips oil on the pilot bushing of the clutch. Over 60 years the oil get impregnated into the linings of the clutch and cause it to "stick"... Push in on the clutch pedal and block with a piece of wood. Mix up laundry detergent and water in a weed sprayer. Spray from the bottom up into the clutch housing area all over the clutch.
Spray the sides of the housing at the top so it drips down onto the clutch......... pull out the starter motor and do it again from the side.. SOAK EVERYTHING GOOD...Let it set for 15 minutes, then get the garden hose and pressure wash everything out, top and bottom. Reinstall starter and test. Should be 90% better..... you might want to do again if you still have some sticking, but run it for a few days first to work up what you have already done.
 
Steve, Thanks for the suggestion, I will give her innerds a good bath the way you suggested in the next couple days and see what comes of it. Thanks again, Sincerely, Hoss
 
In swapping parts around once I had a similar problem, turned out to be a tight pilot bushing fit on the shaft, emery cloth and a few minutes took care of it after finding what was tight. If everything else checks out maybe someone replaced something and caused this problem. Wrap emery cloth around a shaft just a little smaller than the hole in the bushing and work it around a little trying to keep it straight.
 
I have a 1938 B that does the same thing. But here is the kicker in spraying in the starter hole. Mine does not have a starter. She is a hand crank start. Do I try to spray up in the inspection hole on the bottom of the tractor?? Thanks for the advice in advance..........Kenny
 

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