d04925.fm
INSTALLATION MANUAL
BRP-Powertrain
Effectivity: 912 Series
Edition 2/Rev. 0
76-00-00
page 6
August 01/2012
1.3) Oil pressure sensor
General note See Fig. 3.
As the instruments need a separate power supply and a different design
for the electrical oil pressure sensor, the resistance type instrument (type
VDO), which was supplied by BRP-Powertrain up to now, is not suitable
anymore. Suitable instruments are offered by various instrument manu-
facturers (e.g. ROAD or Aviasport).
Technical data Oil pressure sensor:
Output signal In contrary to the oil pressure sensor offered up to now, which was pro-
viding the signal on the basis of a sensor resistance variation, the new oil
pressure sensor (1) operates on basis of a current variation. This has to
be taken into account for the selection of the appropriate cockpit instru-
ment.
Wiring connec-
tion
Wiring connection for instrument:
NOTE: The sensor cable can be modified in its length according
to the installation situation, e.g. shortened or extended.
For extension an appropriate, commercially available ca-
ble can be used. A resistance cable or similar is not nec-
essary.
The sensor cable is approx. 3 m (118 in) long and has 3 leads. The
Black lead is not to be connected and has no function.
- The Red lead from the sensor has to be connected to the positive bus
via a fuse or circuit breaker.
- The White lead (output signal) has to be connected directly to the inst-
rument.
Certification to the latest requirements such as FAR of
EASA has to be conducted by the aircraft manufactur-
er.
Location Oil pump housing
Wire gauge Standard wire 0.5 mm
2
(AWG 20)
Cable length 3 m (118 in)
Operating temperature range Min. -40 °C (-40 °F)
Max. +125 °C (+257 °F)
Grounding Via engine block/airframe ground
Tightening torque 15 Nm (98 in.lb) and LOCTITE 243
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