The oil pressure sender I ordered from
Lockwood Aviation arrived this afternoon.
I went to the airport to install it on the RV-12. When I got there I cut the wire to the
existing Honeywell sensor/sender. I
stripped the end of the wires and pushed them through the new cable
attachment. There are 3 wires in the oil
pressure sensor cable but only 2-wires are used. The red and white wires. I cut the black wire short and put some heat
shrink over the end of the cable. After
installing the connector I used the heat gun to shrink the wrap.
I installed the sensor in the Adel clamp,
plugged the newly installed connector to the sensor and fired up the
SkyView. No Joy! I checked the continuity of the wires from
the original connector to the control module.
Both the red and white wires were good.
I checked the continuity from the connector to the new pressure sensor
and found no connectivity in the red wire.
In fact when I held the original spade connectors in my hand the red
wire fell free from the female spade connector.
I striped the wire and crimped on a new female spade connector and the
problem was solved. I pulled the
airplane out to the apron and started the engine. The oil pressure immediately came to 58
psi. As the engine warmed it dropped a
few pounds but I am sure that has to do with the increased viscosity of the oil
as the engine warmed up. I ran the RPMs
to 4,000 and the oil pressure remained constant. I believe the jumpy oil pressure readings are
now solved. While waiting for an answer
from Dynon I will return to the airport tomorrow and use my multi-meter to
check the continuity of the servo wiring from the Control Module to the roll
servo location.
