Removing pulley from cordwood saw

Rock2000

Member
My father has a cordwood saw that mounts to the front of our Farmall. It looks like the bearings are shot on the pulley side, as the shaft will move a lot. I think the bearings, while not frozen, have dug a bit of a groove into the shaft also. I'm not sure of the fix, but first thing I figured would be to take it apart.

It seems that the pulley should slide off, as it has a shaft collar-type bolt. But I can't get it off. In order for the pulley to drive the saw and not slide it probably has a more complicated assembly, but I'm not sure what. The flange on the saw end has no collar bolt or anything else.

Anyone know how to disassemble this? Is it some sort of heated press fit? Also, any advice on how to fix this? New shaft? Or have a machine shop build the worn area back up?

Thanks
Rock
 
Most likely has a wood-rift key but also been on so long that rust etc has locked it on good. Need lubed well for a few days with ATF and then a good pulley puller and maybe some heat
 
If the shaft is worn, I'd have a machine shop build it up and turn it. That may be the least of your problems. Is the bearing a modern ball bearing, a brass bushing, or is it a babitt bearing? Not many around anymore who know how to pour babitt bearings.
 
I guess I'd call them needle bearings. The biggest ones I've ever seen. Not sure where I'd get those either.
 
A woodruff key makes sense, but I don't see any slot in the front of the pulley for it. It would have to be rusted over perfectly. I'll poke around a bit and see.

Thanks
 
Clean the shaft with emery cloth till it's shiny, if there are any burrs or dings file them out. Soak it with the best penetrating oil you can find. Then you should probably get some professional help, many of these old parts are cast iron and break very easy! You may need a hydraulic press and some heat. In this case in the past sometimes we could install the new bearing in a different spot on the shaft where it is not worn. On something like a buzz saw you should have some flexibility.
 

Are there 3 holes in this collar that is holding the pulley on? If so there should be either 2 holes in the back side or 2 holes on the collar holding the pulley. You screw 2 bolts in there and that pushes the hub loose from the collar. The holes will be right on the front as you look at it. After you get that pushed apart the rest should be obvious as to how it goes. You will need to remove the other 3 bolts before you try the 2 bolts.
 
Got it off after soaking it in all kinds of penetrants. Managed to press it off with a small press. Turns out there is no key. I guess just friction and the square bolt to hold it. Surprising.
 
This appears to be the bearing, but I don't see it available anywhere on the web. Any specific locations people can recommend?

http://www.autopartoo.com/oem/massey-ferguson/195205m1.html

Thanks
 
Shaft may have a bit of a tapper to it and if so that is why it was so hard to remove. Common to have press fit stuff back in the day. Shaft be a size just a bit more then the pulley so you heated the pulley to get it on then when it cooled of it was on super tight. Sort of like installing a ring gear on a flywheel
 
(quoted from post at 00:45:30 01/02/15) This appears to be the bearing, but I don't see it available anywhere on the web. Any specific locations people can recommend?

http://www.autopartoo.com/oem/massey-ferguson/195205m1.html

Thanks

By the description it sounds like a 6203.
 
(quoted from post at 22:57:14 01/01/15) By the description it sounds like a 6203.

Sorry, I pasted the wrong link. This is the one I should have pasted. It's a big 3" width.

http://www.autopartoo.com/oem/massey-ferguson/195183m1.html
 

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