Sonex AeroConversions Oil Separator Installation User Manual
Page 2
sonex aircraft
LLC
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Connecting the Ports
Breather Input Line
The oil breather line from the engine is attached to this 1/2-14
NPT threaded port.
Note: Install the steel ball in the port prior to installing a
fitting in the breather port. The ball prevents oil loss during
negative G maneuvers.
AeroVee Installation Recommendation: Install an AN842-
10D hose elbow in the breather input and use a 5/8" I.D.
oil-proof hose between the oil separator and the 5/8" O.D. tube
attached to the AeroVee's oil breather plate. Secure the hose
with hose clamps.
Oil Drain / Return Port
The drain can be plumbed back to the bottom of the engine to
return oil to the case, or it can be plugged so captured oil can
be periodically drained.
The 1/2-14 NPT oil drain / return port.
In this photo the oil temperature plate fitted to most AeroVee
engines has been drilled and tapped to 1/4 NPT and an oil
return line installed.
This separator is shown with an AN912 reducer and AN842
hose elbow.
This port will accept any variety of fittings. Do not use
barbed fittings and hose clamps for the oil return line. Use
only threaded AN hose fittings for critical connections.
AeroVee Installation Recommendation: Install an AN912-
5D reducer in the oil drain port and then install an MS20822-
6D elbow in the reducer.
If the AeroVee engine is equipped with an oil temperature
plate (see photo, below), tap the plate (1/4NPT) to accept an
MS20822-6D elbow and attach a -06 braided hose equipped
with -6AN hose end fittings between the elbow in the plate and
the separator.
Vapor Line Out
This is the outlet for vapor and it should be vented out the
bottom of the airplane. This port will also vent oil if the oil
separator is allowed to fill before being drained, or if the drain
is not plumbed back into the engine.
This port is a 5/8" O.D. tube which will accept an oil-proof
5/8" I.D. hose held in place by a hose clamp.
The 5/8" O.D. vapor line is identified by the arrow.