Hello
I have a question that is related to S6/T6 crankshaft pressure venting.
The question is about the Non-return valve body in the T6/S6 crankcase. The non-return valve is placed near to the end of the venting system. When you detach the inner chainguard (the casting one), there is the breather tube with gauze in the crank case, and behind this, the non-return valve body is placed below the venting passage, in a angle drilled hole that leads to the inner crankcase.
I have attached a not - not very good -photo of two non-return bodys. One have a drilled 2,5 mm hole in the cone end and the other have a threaded hole ca. 2 mm. There should be a ball inside and a cap in the opposite end.
What is the purpose of this valve? And how is it to be placed - cone end upwards or downwards?
It seem to me, that the cone end should be placed upwards? That means, that the ball close for pressure venting here, but opens for passage when underpressure in the crankcase. What is then the non-return funktion when it actually opens for return of venting air?
In the spare parts list for T6/S6, the non-return valve has the item no. C/11642 in page 11.
Can someone help about these questions.
Regards Hoejmark