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Farmall BN transmission

C

calcubman

Member
just opened up the transmission on th BN that has been sitting for 20+ years , is that opening in the case supposed to be like that?
a156657.jpg
 
Other than the rust and crud it looks good to me. However I have only been inside of one of those in my life so not a lot of experience here.
 
No thats not how they look the opening at the rear doesent look like any i have seen in the last many yrs. It is part of the tranny case and there is two bosses for attachments to fasten usually levers for the exhaust lift levers on the cultivator. Check the cast code on other parts of the tractor as it must have been a very early one or something out of the ordinary.
 
I am presently working on a similar transmission from an early 47/ late late 46 Farmall BN.
Facetiously speaking that hole is there so that you can accidentally knock you wrench down into while you are working on the tranny.
In point of fact the same transmission was used on the A and B series tractors THAT whole is there so one may see into the differential section while the top / shifter cover is off and see if any work is needed on the differential section. These and a well built piece of machinery.
If you are thinking about disassembly and replacing bearings and seals do it step by step and keep notes ( Even mental) but best on paper OR acquire a repair manuel
By as many parts from your local bearing supply over IHC >> Check costs with both. Both will have comparable bearings and seals; probably made in the same plant.
Best of the day to you, write me if you desire to.
Wm.
 
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