To measure the slack prior to taking the diff apart I locked the prop shaft and the opposite drum and measured the amount of movement I could move the drum back and forth.
There was a lot of slack which I hope will be dramatically reduced.
information about the MGB and MGB GT classic cars including news and reviews, techs and specs – also updates on repairs, servicing and diy modifications I do on my own MGB Roadster. I am no expert on these cars – just a keen enthusiast – but I hope these posts will be of interest to others with a similar interest