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13
AeroVee 2.1
Rev Z. 01/14/2015
Sonex Aircraft
LLC
© 2014 All Rights Reserved
CRANK CASE PREPARATION
__2. Lay the case on it's side so the oil pressure relief ports
in the bottom of the case are accessible.
__3. Find the oil pressure
relief plungers (2),
springs (1 long, 1
short), metal gaskets
(2) and retaining plugs
(2) in the Case Kit.
Note: The remainder
of the case kit may be
discarded as it is not
needed on the AeroVee.
__4. Insert the grooved
plunger, lightly lubri-
cated with motor oil,
solid end first into the
oil pressure relief port
in the bottom of the
case near the prop hub.
Note: The plungers
must move freely in
the passages. If they do
not, clean the plungers
with fine emery cloth
until they do.
__5. Insert the long spring
behind the grooved
plunger.
__6. Place a metal gasket
on a retaining plug and
screw the plug into the
relief port.
__7. Insert the non-grooved
plunger, lightly lubri-
cated with motor oil,
solid end first into the
oil pressure relief port
in the bottom of the
case near the flywheel.
Oil Pressure Relief Ports
__8. Insert the short spring
behind the non-grooved
plunger.
__9. Place a metal gasket
on a retaining plug and
screw the plug into the
relief port.
2
3
4
5, 6, & 9
__11. Wipe clean the case journals and the back of each Cam
Bearing and install the bearings in the left half of the
case. The following photos show where each bearing is
installed.
The Stud Seals slide over the 6 large studs in the right case
half.
10
10
The cam bearings are installed in the left case half as shown
in these photos. The left photo is the rear (flywheel end) of the
case, the right photo is the front (prop hub end).
11
7
__10. Install the Main Bearing Stud Seals (Qty. 6) from the
Gasket Set (ACV-P02-15). The seals slide over the 6
large studs in the right case half.