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BN PTO/Belt-pully

T

Tom -S.Jersey

New User
Just starting to work on a 1945 BN I've had for about 5 years.I have the Power Take-Off drive housing and the Belt Pully Drive Housing off. There were no Belt Pully Drive Housing shims between the two housings.Is this correct or should there be at least one shim? Do the shims act as the oil sealing gasket between the two housings? If not what does? Thanks for your help.Tom
 
There's a gasket between the two. Shims are used only when required. Impossible to say at this point whether you ever had any at that point. There can be other shims on the pulley shaft, under the bearing cage that may have been all that was needed if any at all.
 
The parts catalog CD shows two versions of the belt pulley arrangement. One has a gasket between the two housings and shims in the bearing retainers. The other shows shims between the two housings. If you did not have shims or a gasket in there, then I'd say none were required. When the shims are used, there is no gasket. The shims act as the gasket and ofter you will get a little oil seepage. Back in 1940, a little oil I suppose was considered a normal thing. I've had good luck using a very light coating of spray on gasket sealer in this situation.
 
On mine there's no gasket, there is an o ring on the PTO. The shims go on and then the pulley housing mounts on the PTO around the o ring. I just bought the o ring at my case ih dealer. It was about 5 bucks and they had it in stock.
 
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