RE: [ST] oh no, oil leak

[WeaselDawg <Eric@xxxxxxxxxx>]

At 01:18 PM 8/9/01 +0100, Rich Crinson wrote:
>It might be worth checking the airbox drain tube.  There is a centrifugal
>valve in the crankcase that can stick and let small amounts of oil into the
>airbox, which then drains out through this tube just like it is designed to
>do.

Rich (and others),

Was speaking with a tech here in Florida yesterday and he has seen a number 
of these in the recent past.

Behind the left hand engine cover is a breather assembly which consists of 
a centrifugal disc assembly and a lip type seal which is designed to 
prevent oil from entering the outlet for crankcase gases. The seal in the 
cover must be installed so that the sealing surface is toward the breather 
/ crankshaft - this allows the crankcase pressure to push the sealing 
surface against the sealing surface of the breather wheel. IF this seal is 
installed in reverse from the factory, the seal will work for some period 
of time until the rubber begins to harden at which point the seal will 
begin to fail, allowing oil into the airbox, down the drain tube and over 
the bottom of the bike.

When installing a new seal, the tech must make sure that the side with the 
writing is installed in the cover so that it points toward the breather / 
crankshaft.

With the number of Daytonas and STs that this has happened on, there is 
obviously someone at the factory that is not qualified to be installing 
these things. I know that "printed side toward motor" is a pretty difficult 
concept to grasp....

Nice thing is that it is an easy fix.

Hope that helps some of you.

- -Eric


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