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Engine front drive pulley play


 
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Michaelr0953
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Joined: 20 Dec 2018
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PostPosted: Thu Dec 20, 2018 9:22 pm    Post subject: Engine front drive pulley play Reply to specific post Reply with quote

Just acquired a 1941 Allis Chalmer b. It runs but it has a knock the first thing I noticed that the engine front drive pulley has about a quarter inch of play. ( side to side) Haven't pulled it down yet because it's winter and like to get an idea of what I'm facing when I take the pulley off. New to the tractor world, like to know what I should be looking for thanks.
Michael
 
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Aaron SEIA
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Joined: 16 Dec 2003
Posts: 2132
Location: SE Iowa

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PostPosted: Fri Dec 21, 2018 4:07 am    Post subject: Re: Engine front drive pulley play Reply to specific post Reply with quote

It has a large tapered setscrew holding it on. That has probably came loose.
AaronSEIA
 
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Nathan (SD)
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Joined: 17 Jun 2003
Posts: 534
Location: Day County, SD

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PostPosted: Mon Dec 24, 2018 7:58 am    Post subject: Re: Engine front drive pulley play Reply to specific post Reply with quote

Like Aaron said. Tapered set screw. Sometimes
there is another screw stacked on top of the tapered
one. Best is to remove the screw or screws and see
what you have in there. Seen one where someone
had a non-tapered screw installled. They were
tightening it daily and couldn't understand why it
would not stay tight.
 
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Michaelr0953
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PostPosted: Mon Dec 24, 2018 6:47 pm    Post subject: Re: Engine front drive pulley play Reply to specific post Reply with quote

Thanks for the reply guys, I will check it out.
have a Merry Christmas
 
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Michaelr0953
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PostPosted: Tue Dec 25, 2018 4:47 pm    Post subject: Re: Engine front drive pulley play Reply to specific post Reply with quote

I removed the lock nut and set screw from crank pulley, it does not look like the picture I found on line. also does the set screw set over the top of the crank key way?
Picture 1-2 are the one out of my tractor, picture 3 is a picture i found online.







 
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Aaron SEIA
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Location: SE Iowa

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PostPosted: Wed Dec 26, 2018 3:52 am    Post subject: Re: Engine front drive pulley play Reply to specific post Reply with quote

Just looked in the parts book. The B used a different setscrew than the WD like the one in your bottom picture. The B ones I think look more like your top picture. There should be 2 of them though. I would guess one over the key and one opposite that. I can try to look at my boys C tonight if I remember and see just how it should work.
AaronSEIA
 
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