My '47 Windsor won't automatically upshift, I originally thought it might be electrical but I have checked the system and all seems well.....
If I remove the interrupter and build the revs up in 3rd I can see the piston slide forward in readiness for a shift but it never actually shifts into top so I suspect the hydraulic side is ok also. I suspect that for some reason the shift slide (or whatever it's called) just isn't engaging.
Are there any walkthroughs on inspection of this or will I just have to use the manuals?