Morris Minor Owners Club

Richard,
Many thanks for the information, I had a look at the drain plug yesterday as it is probably ony screwed in about one third of the way, it didn't appear to be leaking as much but will get a tap and clean up the threads.
John

OK, thanks, so how do I clean the thread? What size tapered tap do I need? Or do I get a spare drain plug and file some vertical grooves in it and try and clean it out using the drain plug as a sort of tap? How was/is it done in manufacturing? Which is the harder metal, the diff case or an ESM drain...

All,
Diff drain/filler plug size please? My drain plug thread is damaged so I can only screw the plug in about half way resulting in a small leak. I assume that running the correct size tap through and flushing any swarf out with some oil will solve the problem?
Thanks
John