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Aircraft Service Manual
Jabiru Aircraft
Pty Ltd
JTM001-1
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
REVISION
1
Dated: Nov 2011
Issued By: SW
Page: 54 of 233
4.20 SPECIAL INSPECTIONS
– FUEL SENDER CALIBRATION
This procedure explains how to calibrate the inbuilt gauges in the Dynon EMS D10 unit to the Jabiru
Float type gauges.
This procedure is applicable for Jabiru Aircraft equipped with wing tanks and electronic fuel gauge
senders.
This procedure must be carried out during initial assembly of a new aircraft or when a new gauge
sender or new EMS is fitted.
The accuracy of the fuel indication system of the aircraft depends on careful and accurate completion
of this process.
The following special tools are required for this procedure:
-
Clamp suitable for crimping off fuel lines without damage (Figure 24).
-
Fuel container to drain fuel from wings.
-
Accurate fuel pump or measure. (i.e. Avgas bowser).
Each fuel gauge indicator on the instrument panel (or in the EMS) needs to be connected to the
sender on same side. To achieve this:
-
Turn on the EMS. Enter the EMS menu by pressing any button below an EMS main page and
pressing MORE >SETUP > MORE > FUEL. You are presented with the screen shown Figure 23
(left). Press SEL and then enter a tank size of 65. Then press NEXT. Then press START. You
will be presented with the screen show in Figure 23 (right).
-
The sensor value should read around 296 as shown.
-
Disconnect a wire off the left fuel gauge sender. The sensor value should increase to around
490, when wired correctly.
-
If the reading does not change, then disconnect a wire off the right side sender. If there is no
change there is a wiring fault. If it does increase then fuel gauge sender connections are
reversed and must be corrected.
-
To exit press RESET and then CANCEL.
Figure 23
– EMS Fuel Calibration Screens
For this procedure the fuel tanks need to be incrementally filled from empty so first the tanks must be
drained. Fuel containers of sufficient volume to contain at least 10L more than the volume of fuel in
the tanks are required.
Drain the fuel system completely. There are two ways to do this. They are:
-
Disconnect the fuel line from the carburettor. Using a length of fuel hose added to the fuel line
pump out the fuel from the system using the auxillary electric pump and gravity. Ensure the fuel
tap is turned off before removing the fuel line extension and re-connecting the line to the
carburettor.