Rotax 582 crankshaft repairs.

Re: Rotax 582 crankshaft repairs.

by MARK JACKSON » 13 years ago

MARK JACKSON

12 332 11

Hi Don

Don't even go there. If I was you I would bite the bullet and buy a new crankshaft, if there is the slightest mark on the bearing bores in the crankcase, I would buy a short motor.

Rotax recommend that you don't dis assemble the crank shaft and after some one doing one for me about 22 years ago, I would agree with them. If it was a motor cycle crankshaft, it would be a different story.

There can be small pieces of metal from the bearings embedded anywhere in the engine.

I would say you need a new, short motor.

Mark

Re: Rotax 582 crankshaft repairs.

by bill martin » 13 years ago

bill martin

10 757 0

Don,

The end bearings can be replaced if you have the equipment and go strictly by the book and even then it's a risky operation. As for the inner bearings, Mark is right. Don't even think about it. I had a crank shop do one for me several years ago with disastrous results.

Bill.

Re: Rotax 582 crankshaft repairs.

by Don Cramer » 13 years ago

Don Cramer

7 4 13

Thanks very much for the quick replies and the words of "comfort".
Could you p[lease give me a brief outline of your attempted crankshaft repairs and outcomes.

I will post some more photos of the bearings in more detail. Yes very interesting.
In the very near future I will be contacting Rotax Austria directly.

Regards and thanks,
Don.

Re: Rotax 582 crankshaft repairs.

by Don Cramer » 13 years ago

Don Cramer

7 4 13

Sorry Bill ... forgot to ask.
Where can i find "the book".

Regards,
Don.

Re: Rotax 582 crankshaft repairs.

by bill martin » 13 years ago

bill martin

10 757 0

Don,

Rotax used to publish a two cycle version of the 912 heavy maintenance manual. I haven't seen it in quite some time and its not listed in the manuals available on this site. If you go to the california power systems 1-800-airwolf website you can go to the tech info tab at the top of the page and click on tech articles. I think I remember instructions in one of the articles there on how to change the outer bearings. Its been a while since I changed any but basically its a matter of chilling the crank and warming the bearings so everything slides together without a lot of effort. If you are familiar with this sort of job (and it sounds like you are) its not a big deal. I will say again though, the inner bearings are beyond my expertise and I wouldn't recommend even trying to change them.

Bill.