Thanks for that Jon. I did drop in to Moss for some MGB bits, and thats where I got to compare that reverse gear. It looks like gearbox parts are getting a bit scarce.
Anyway to get the mainshaft out you have to remove the speedo drive cog. This was a real pain. And somebody has also been there before me. I was expecting a wire circlip to be retaining the nylon cog, but after a couple of hours of trying to extract the non-existant circlip
I went for hack-sawing it off.
This was a big surprise. The white nylon cog had a steel bush under it ! And I had to resort to a chisel to remove that from the mainshaft. It was really tight.
And the next surprise is that there was no ball bearing retainer and no sign of a drilling in the shaft. No sign of a groove for a circlip. The steel bush was smooth bored. My guess is that is was just retained by Loctite ?
Is this usual for an 1850 non-O/D box ?
What do I need as a replacement ?
Thanks,
Tony.