Model A cooling fan

Hi guys, I posted a message earlier today about the fan hub on my A. A couple guys responded (thanks) but I still have some questions. The fan hub had oil in it when I disassembled it, and the hub turns easily on the shaft without any play, so there is no excessive wear on the shaft or hub. When I look into the hub (the piece that has the pulleys on it), there is a cone shaped piece of sheet metal that tapers down to the opening where the shaft comes out of the back of the hub. Inside this cone shaped piece looks (and feels) like small bits of cork?, but there is no seal of any kind. Was there some sort of cork gasket / seal in this cone shaped piece? Also, on the shaft is 3 grooves machined into the shaft. (I'm sure they are not wear marks, as they are too consistant with each other and no other parts around this area to cause the wear). Are these grooves part of the old seal? If so, can someone describe how these grooves fit the old seal?
I dont want to buy the newer style hub (with sealed bearings) if I dont have to yet. This one is nice and tight without any play, its just that oil comes out if I put too much in, which gets us back to my first message today......how much oil goes in the hub, and if I knew what the original seal (if any) looked like I may try to replace that type of seal (or come up with something on my own, such as silicone on the outside to keep the dirt out or leather, etc, on the inside?) Any other thoughts? Thanks.

Remove the screw.
Turn hub so that the hole is just above horizontal.
Squirt oil in the hole 'till it runs back out.
Lay a rag on the crankshaft pulley,
Turn hub so that hole is straight down.
Wait 'till the oil stops running out.
Put screw back into hole.

Vern

(quoted from post at 00:04:49 06/30/12)oil comes out if I put too much in.

Click to expand...

hat's your answer, right there. Read the Owner's Manual on how to oil it. Essentially, you squirt some oil in then turn the opening down to drain off the excess.

There are 2 different styles of those hubs, so I can't tell you exactly what the inside looks like. In any case, I don't know where your bits of cork came from, maybe remains of a gasket. There should be a gasket between the fan blades and the hub, one way or another. Look at the parts catalog drawings to see how it should fit together. There is no seal needed on the shaft.

Where can I find a parts break-down?

Thanks Vern.

There is an excellent exploded diagram on the CaseIH website. Go to:
www.caseih.com and follow the links for Parts. Type in Farmall A. Go to Engine, Section 022, Fan, Service Parts Corporation.
SadFarmall

There is no shaft seal to speak of on the fan hub shaft. Centrifugal force throws the oil to the outside of the hub and keeps the oil from coming out. The grooves you speak of serve as a sort of "pump" to cirulate the oil and lubricate the bearing. If your shaft has little or no play, you don't need a new fan assembly. Just make sure you get it back together properly and put oil in there as others described.