MZ/MuZ Riders

:cry:

So here I am fixing the eternal MZ oil leak
Then notice, the top bolt connecting the engine to the frame sticks out. All the threads are polished clean... Except the first quarter turn.

I was able to just pull out, has anyone had that before?
Recovering from shock until I try a fresh bolt... Somehow this seems like a headache I didn't want!

Thanks for the response, it's #2.

I worked out what happened. The threaded bit has snapped
In the case . I know engine is still solid as the hole where it came out lines up perfectly.

It does mean that a bottom end or gearbox rebuild will require new case half..

Bolt was torqued properly, can only suspect metal fatigue...

I agree, it won't need splitting the engine. The difficulty might be fiddling the engine out of the frame, if the broken bolt is holding it in. There is normally about 2cm of thread on the bolt, so there will be more than 1 cm sticking out, in which case a bolt extractor from the RHS is the best bet.
Edit: I've now realised it can't be done. The rhs of the bolt is inaccessible. Hopefully there will be enough play in the engine plates to get the engine out.

An interesting problem!

Thanks for the responses everyone!
Yes I remember the welded nut, which is inaccessible. Still the problem is one of only drilling and collapsing the screw with the engine supported.
I am content that everything is tight (enough) to not make it an immediate problem - it just so happens my 3rd gear started skipping, but seem to overcome any issues riding the clutch!

Screw extractor could work, but as someone that snapped one when using the wrong size.... Probably best to drill, or pivot the engine when that time comes.
Until then, will put it altogether and pretend this isn't an issue. Yet.

Thanks and stay safe everyone,
Nik

Thank you appreciated.

I think once all screws are loosened should be able to pivot the engine, but easy it won't be. Swing arm approach might help.

Thanks,
Nik