Help Needed - Oil Catch Can on Volvo Penta 71B

[Capt Blog]

Hi there,

I have a couple of VP 71B's which I have just fininshed refurbing.

Whilst not excessive they do have blow-by which exits via the crankcase filter eventually leaving a coating of engine oil in the bilge an bilge blowers.

I've used oil catch cans previuosly on other engines but would really appreciate some guidance if I am on the right track with the attached diagram.

Thanks in advance

[Madehn]

Had an air / oil separator on my plane that looked very similar. As I recall the drain hose went back down to the oil sump. Worked great reducing oil consumption and keeping bottom of the plane cleaner.