 Doing the same thing on my NAA Project Rustbucket. The pic is what I saw when I first took delivery of the tractor... I am getting new tranny guts from John Smith and took out the old rusted gears and shafts in preparation. I cannot give a definitive answer on all questions, but I can help you with some. 1 - Input seal, main shaft gasket, countershaft gasket, shifter cover gasket, gasket between the tranny housing and differential housing. This is all I could identify, and hopefully all I need as that is all I ordered... 2 - The clutch release shaft and the left brake shaft can just be pulled/twisted out. Of course, you need to remove the clutch fork from the clutch release shaft first, which can be a dog (and was for me). Replace both press-in bushings on both sides (4 total) before you replace. These are removed and installed with bushing drivers, and the brake shaft and clutch release shaft bushings are different sizes. 3 - Clean it good of gunk with kerosene. 4 - Follow the I&T manual, and remember and retain the metal shims from your old setup. This will get you close on your bearing preload on re-assembly. No special tools were needed for me. 5 - Yes, see #4. Also, now is a good time to inspect and/or replace any bad or pitted bearings on your main and counter shafts. But they are hard to remove and press on, so be ready for a job if needed. 6 - The main and counter shafts and all gears come out together. It is really pretty straight forward, just follow the I&T manual. This was my first time, and I was really amazed at how straight forward it was. Keep track of all detent balls and springs... Good luck,
Dan
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