Stihl 361 main bearings

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farmguywithasaw

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Working on my buddies 361. Hasn’t had any real maintenance in a while. So I pulled the clutch drum off and I noticed there is a very small amount of wiggle only on the pto side. Is there a spec for how much is allowed or is it time for new bearings. Also a service manual could be helpful thanks JP
 
This chart shows the radial clearance for deep groove bearings. C3 is the column you're interested in.
http://flt.krasnik.pl/images/Baza_wiedzy/EN/Internal_clearance.png

A drawing of internal clearance:
https://blog.emersonbearing.com/hubfs/unnamed.jpg?t=1534446719883#keepProtocol

Dunno the exact size of your bearing, but it has to be in the first 2 rows of the table, so the max clearance would be 28um, or .0011 inch. If the shaft rattles much more than a thousandth, you should probably investigate further.
 
This chart shows the radial clearance for deep groove bearings. C3 is the column you're interested in.
http://flt.krasnik.pl/images/Baza_wiedzy/EN/Internal_clearance.png

A drawing of internal clearance:
https://blog.emersonbearing.com/hubfs/unnamed.jpg?t=1534446719883#keepProtocol

Dunno the exact size of your bearing, but it has to be in the first 2 rows of the table, so the max clearance would be 28um, or .0011 inch. If the shaft rattles much more than a thousandth, you should probably investigate further.
Yeah it’s mor like 5 to ten thousands I’ll pull the oil pump and the crank seal to see we’re the play is
 

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