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Farmall & IHC Tractors Discussion Forum
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SA fan hub

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banjo

01-12-2006 10:08:52




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What kind of seal is supposed to be on the back side of fan hub. I have taken it apart and i do not see any evidence of any kind of a seal. there are 3 grooves on the shaft.If you have ever taken one apart you will know what i am talking about.

It leaks out the back by the nut. I just wonder if a previous owner had it apart and left a peice out. Is there any online breakdowns of this? Thanks




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Georgia Boy

01-12-2006 18:22:58




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 Re: SA fan hub in reply to banjo, 01-12-2006 10:08:52  
I just rebuilt a fan for an A and I agree with Hugh. You probably have too much oil in it. You have to turn it over and let the excess drain out. Enough will remain inside because there is a little pipe on the inside of the oil hole that points up when the hole is facing down and it holds back just the right amount.



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Haas

01-12-2006 18:21:44




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 Re: SA fan hub in reply to banjo, 01-12-2006 10:08:52  
I'll add my 2 cents here. There is no seal on these fan hubs. The hub is designed so that centrifugal force circulates the oil and also keeps it from coming out around the shaft. A little leakage --enough to cause dust film-- is normal. Don't put in too much oil. When you took the hub apart, you should have noticed a little "stand pipe" at the oil fill screw opening. Proper procedure is to turn hub so the fill screw is on the side. Take an oil can and fill the hub until oil runs out. Then turn the opening to the bottom and let excess oil drain out. Oil will then be to level of the little stand pipe. Insert the screw in the fill hole and you are good to go. There is supposed to be a little o ring gasket under the screw head.

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Hugh MacKay

01-12-2006 16:59:51




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 Re: SA fan hub in reply to banjo, 01-12-2006 10:08:52  
banjo: Read my responce to Alann. You may be trying to keep too much oil in that hub.



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Andrew Z

01-12-2006 14:47:53




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 Re: SA fan hub in reply to banjo, 01-12-2006 10:08:52  
I had the same trouble with my Super C. I tried putting "O" rings in the back to hold the oil in. That lasted about two months. I think once they start leaking they go. I got one of those sealed ones from Steel Wheel Ranch. I think like 60 bucks not bad at all. I"v had that on for about a month and love it. If I knew that before I would not have wasted all that time trying to fix the old one. I think he has used ones that he sells to. Good Luck Andrew

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Mr. Farmall

01-12-2006 14:39:38




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 Re: SA fan hub in reply to banjo, 01-12-2006 10:08:52  
My repair book shows threre is no seal in the fan hub it just has that cone thing to throw oil back from the shaft opening. The owner"s book says to check the oil level in the fan hub evey 60 hours and to use moter oil in it. There are new fan hubs that have sealed ballbearings you do not have to check on.



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alannpa

01-12-2006 15:20:38




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 Re: SA fan hub in reply to Mr. Farmall, 01-12-2006 14:39:38  
I have looked all over (I think) that hub and cannot find a place to put oil. What am I missing? Have to admit I haven't taken the shroud off the radiator.



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Hugh MacKay

01-12-2006 16:54:31




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 Re: SA fan hub in reply to alannpa, 01-12-2006 15:20:38  
alann: Mr Farmall is correct except he left one item out. After filling the hub as he suggested with the hole at 90 degrees, then turn fan so hole is on bottom to drain off excess oil. This may be banjo's problem, keeping that hub too full.

This is in the IH operators manual. If I haven't been clear I can quote it word for word.



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Mr. Farmall

01-12-2006 16:34:10




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 Re: SA fan hub in reply to alannpa, 01-12-2006 15:20:38  
You will need to turn the fan hub by hand until you see this little screw plug (it should be a flat blade screw head) on the hub and then turn the hub so that the plug is set to the left-hand horizontal position. Then screw the plug out and then use a oiling can to fill the hub but not too much oil or it will leak out the back of the hub.



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banjo

01-12-2006 19:40:27




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 Re: SA fan hub in reply to Mr. Farmall , 01-12-2006 16:34:10  
I was trying to keep too much oil, forgot about turning upside down. I looked at my other Sa and it looked like there was an O-ring on the back.

It need a good cleaning anyway, I finally figured out the search feature and noticed several people had the same problem.

Some good news, My magneto is working afterall. Need a new cap.

Thanks for the info.



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Mr. Farmall

01-12-2006 19:56:23




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 Re: SA fan hub in reply to banjo, 01-12-2006 19:40:27  
There are two types of fans used on the model A one type is the Service Products Corporation make fan which has the little oil tube and the Schwitzer-Cummins Company make fan that does not have a oil tube but instead has a oil impeller. Now on the Super A I do not know if they might have used a thrid type or not, or it could be a newer model fan somebody had but on it.



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