Your local auto parts store should be able to cross-reference the Case number to C/R or National. Hal
 
If you have disk brakes you need 1 seal per side, and if you have drum brakes you will need 2 seals per side.
 
Wondering where the information on 1 seal versus 2 came from. Parts book shows same seal for both applications. Also later Case # is A 30501, still crosses to CR 22446.
 
I am good friends with an older CASE service man and he lets me know if he has anything relating to a project I'm doing. He gave me this bulletin that I had MJ post on his website for all of us to reference. I have about 300 J.I.CASE service bulletins from about 1935ish up to the 80's.

seal%20bulletin.jpg
 
I still don't understand the referance to that bulletin. The seal size does stated not corespond with the application. National # 480162 (CR 11800) is for a 1.188 shaft with a 2.0 od. CR # 22446 is for a 2.250 shaft with a 3.251 od. I am fairly certain that bulletin is pertaining to the transmission input shaft seal where you are trying to keep 2 different fluids seperated. Not trying to be arguementive, always looking for new information as I have about 35 of the VA series sitting here.
 
I have to go with Lee, bulletin is for the drive shaft doublelip seal p/n VT4970, cross-ref p/n A30603. For 1.188" dia shaft 2EA CR11800 seals.

Differential shaft (brake) seal p/n VT3465, cross-ref p/n A30501. 1EA CR22446 seal per side although some posters here have recommended using 2 per side (spacer?) due to the narrower width of CR seal.

I seem to remember someone mentioned a bulletin on the brake shaft seals, maybe you have something on that?

Joe
 
I got this one the last time I bought a set of seals for a late model VAC, might have given it to me because I was rebuilding the entire rear end too, not sure anymore.
 
Take your old seal to Bearing & Transmission in Regina or S'toon and they will match it up . R Anderson (also in Sask)
 
I cannot remember what number I had used, but I did use two seals. Turned the "inner" seal inward and the outer seal out. It allowed the new seals to "run" in a different spot on the shaft. Did the same thing on rear axle seal.
 
I went down there and talked to him. He said that the old seals had 2 lips on the drum brake tractors so you should put 2 seals back in since the correct 2 lip seal is no longer furnished. He said t oinstall them as the service bulletin shows. The disk brake VA's do not have enough room in the bearing carrier for 2 seals so you have to use one.
 
They are also yours and are overpriced. Using a 50+ year old seal is a gamble and with modern rubber they are good for decoration. I can go to NAPA and buy new ones for $16.00 each all day.
 

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