MG midget 1275 gearbox woes

[moggiegeek]

Some time ago bought a midget 1275 gearbox - just about to install when I noticed it was locked up. Sad but not as sad as installing it and then finding out.
Is there a good reference diagram available as I'm planning to strip it down ... Nothing to lose and may even succeed.
Similarly is there a step by step guide better than my old Haynes manual that I don't think has rib case gearboxes in it.
Thank you.

[oliver90owner]

Have the selectors been shifted into two gears at the same time. Best to check the obvious possibilities before diving in.

[les]

See if this link works ——-https://www.dorsetmmoc.co.uk/wordpress/ ... ebuild.pdf. Should help with a rebuild.

[moggiegeek]

Thank you - fantastic explanatory pdf. Is there a good diagram available as well?

[Chipper]

With a locked gearbox (I've suffered it twice!), you can remove the sump plug (having drained the oil, of course), and use a flat-bladed screwdriver to reach in and release the stuck selector forks.

You may find it's just a missing detent ball bearing/slug/spring in the side of the gearbox that's caused the problem, so check those are in place before dismantling any further.