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Farmall B Crankshaft Pulley Mystery

K

KerryM

Member
I bought a non running B and have slowly been working on it. When you turn it over with the crank, every now and then it locks up. You put it in gear, roll it backwards to turn the crankshaft a tiny bit, it breaks free and cranks fine again. Yesterday I removed the radiator and started clearing all the greasy dirt and crap under it and around the pulley. In the crap I found a big thin flat washer under the pulley, all bent up and in two pieces. Shiny places where its been rubbing. I think it'd been catching on a flat area on the pulley hub and causing the lock up.
It reminds me of an oil slinger on a car on the crankshaft behind the timing cover. Could it have gone on between the pulley and timing cover? I don"t see any damage to the cover or pulley. I have no clue how it would have came off if it went there.
Ideas? Thanks
 
i'm not sure how similar a B is to my C.. but I think it's the same pulley and cover.

the timing cover seal actually runs ON the pulley inner portion.. thus no washer betwixt them.

perhaps it was a large washer left over from reseating the pullet onto the crank. IE.. a big bolt and some big washers to screw / press the pulley back onto the crank.

I used a piece of 1/2" flat stock cut round and a gr8 1/2" x 4" bolt and a couple washers unde the bolt to plate etc..

soundguy
 
Maybe tonight I'll take a pic of the washer thing and put it on here. Its too thin to have been used for any sort of pulling.
 
It is most likely to be a washer that fell off of something else like maybe a cultivator that may have been on it at one time or some such thing like that. Odd how many things can be found in odd places on old tractors and where they came from well that is one of those you will never know.
 
I was figuring that after looking at most of the parts diagrams as they listed same part for them models.

soundguy
 
A lot of the differences in them had to do with the govanor as to more or less HP and that was mostly things like how long to carb to gov rod was and springs
 
Name this part! Last pic is when I tried to form it back in shape. Around 4 1/4" across it.
a53877.jpg

a53878.jpg

a53880.jpg
 
Very hard to tell from what is left but it could be the crank shaft seal or what was left of an old one. Question is does it leak a lot of oil in that area or is it as it should be?? Could well be an old seal that got dropped in that area and just got in the way
 
old nailed it I believe. it really looks likethe face of a crankshaft seal.. they press in from the back.. so the prev owner must have dropped the old on into the space down there when he hurredly change dthe old one and put a new one it.

or, it failed and ripped out around the crankshaft snout.

as old says. does it pour oil when running? mine did, with a bad seal.

soundguy
 
Naw, its a steel ring. About 1/16 thick. Not a seal. It"s like an oil slinger washer with a small lip on the inner diameter. I have to believe it didn"t come off this tractor. I have no clue if or how much the front seal leaks yet, as I haven"t gotten it running yet.
 
At 4.5" across it is one face of a stamped steel pulley from someones idea of an accessory drive. The wear around the edge is from the belt, the distruction is from where you found it, and the pulley could not handle the stress applied by what it was attached to. Jim
 
I figured it out. Its from the fan pulley, the forward most flange that would be what the V of the belt from the crank pulley seats against. Cracked and fell down. No wonder the belt was so loose!
 
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