Wet vac pump question

Rip wrote:

Agreed. I won't fly hard IFR with a dry pump, and I laugh each time I
throw one of those Parker Hannafin "mandatory" notices in the trash,
unopened. The last wet pump I had overhauled had over 3000 hours on it,
and the overhaul facility changed the bearings, just so they could say
they had done something.

I agree. Dry pumps should be outlawed! :-)


Matt

JFLEISC wrote:

Any wet pump that uses enough oil to be noticeable is in need of overhaul.


This is what I was wondering. I don't mind getting an overhauled pump if that
will stop it's oil usage, but the feedback on this thread leads me to believe
that many in this group think that 'noticable' quantities of oil out the wet
vac vent tube is normal. Do I have the wrong impression here (I hope)?

Jim

Yes, you have the wrong impression. After owning a Skylane for several
years, we had no issue with oil consumption due to the vacuum pump, but
did get enough oil on the belly to require an annual clean-up. However,
it takes very little oil to completely soil the bottom of an airplane.
Probably less than half a cup.


Matt