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Farmall & IHC Tractors Discussion Forum
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B Farmall Crankshaft pully

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TKN

05-29-2005 19:58:37




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I have sucessfuly removed the pully from the crankshaft without breaking it! Now I am ready to put it back on. It has a set screw that threads into a bolt that is cast on the pully. Below the setcrew is a pin that goes in through the pully and squeezes against the flat portion on the crankshaft to hold the pully in place. I cannot get that pin to budge. Is it threaded in? Is it just stuck in there? It's pretty hard to get to to apply any pressure. Any ideas?

Second question. The adiator fan has oil inside the hub. I took it apart to clean it up and spilled a bit of that oil. What weight oil and how much goes in there?

Thanks!!!

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TKN

05-31-2005 10:52:15




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 Re: B Farmall Crankshaft pully in reply to TKN, 05-29-2005 19:58:37  
Thanks for the comments. I hate to admit it, but the bolt that I thought was cast on the pully is actually a threaded bolt that goes through the hub. After soaking in penetrating oil for about a week, I just on a whim put a wrench on it and it came right out. I don't know what the purpose of the set screw is. Put in a new bolt and tightened it onto the crankshaft....good as new.



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Jim Becker

05-31-2005 17:59:40




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 Re: B Farmall Crankshaft pully in reply to TKN, 05-31-2005 10:52:15  
The setscrew is there to hold the pulley on. A bolt is not an adequate substitute. The original was a 3/8 x 7/16 NC headles cup point with a lock nut. I suggest you use the same.

It was used on early production.



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gene b

05-31-2005 02:27:49




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 Re: B Farmall Crankshaft pully in reply to TKN, 05-29-2005 19:58:37  
I have had a bunch of those pulleys off and have never seen onelike you describe. Better take it to a machine shop or dealer for a second opinion. Dont under estimate the fan assy as its only been operating for 50 pluss yrs. Just make sure the slinger gets installed correct or shaft will run dry. Regular oil is ok.



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Roger WI

05-30-2005 18:48:01




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 Re: B Farmall Crankshaft pully in reply to TKN, 05-29-2005 19:58:37  
I don't know about the crankshaft pulley as all the ones I have done had no set screw, were just pressed on. On the fan hub, you can put engine oil in there. That system would never make it in today's world. I could never see how they came up with that design with the oil sliger that lubricated the shaft (amazing number of parts). If you completely disassembled it you have to make sure you get that oil sliger in there the right direction or the shaft will run dry. You squirt oil in through the lubrication hole and then turn the fan so the hole is down. Oil should run out. If it doesn't, put more in until it runs out when you turn the hole down. That will insure you have the correct amount of oil. Put the screw back in when no more oil comes out of the hole in the down position. Maybe you already know this part about adding the oil. Roger

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