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RS125/Rotax122 crank bearings - which way round???

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andy_uk
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Joined: 13 Aug 2011
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PostPosted: 19:18 - 29 Dec 2011    Post subject: RS125/Rotax122 crank bearings - which way round??? Reply with quote
I'm currently rebuilding my Rotax122 after a big end replacement.
However, the new crank bearings are slightly different to the old ones...
The original ones were identical so it didn't matter which way they were put in. The new ones have the bearings only visible from one side (see pics).
I would assume that the 'blank' sides face the crank so the 'open' sides are facing the oil channels (if that's what they are) in the crank case.
Any thoughts ?
https://lh5.googleusercontent.com/-FS8P4fiTKHs/Tvy4p4tZQSI/AAAAAAAAALs/UlR2gGelX_g/w408-h306-k/IMG_20111229_185102.jpg
https://lh3.googleusercontent.com/-8YB-xB432NI/Tvy4p6FrWAI/AAAAAAAAALs/SIDjP1mP1Yk/w408-h306-k/IMG_20111229_185041.jpg

Sorry about the dark photos, I didn't get a new cameraphone for Christmas Wink
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jjdugen
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Joined: 03 Jun 2011
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PostPosted: 19:25 - 29 Dec 2011    Post subject: Reply with quote
The 'blanking' is just a cover. It will come out with a bit of digging, just be careful not to mark the bearings
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P.addy
Formerly known as
P.



Joined: 14 Feb 2008
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PostPosted: 20:07 - 29 Dec 2011    Post subject: Reply with quote
Pretty sure when Pete did my RS, the exposed side was inside the engine.
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andy_uk
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Joined: 13 Aug 2011
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PostPosted: 20:32 - 29 Dec 2011    Post subject: Reply with quote
Thanks guys!
I'll go fit them now Smile
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