Check The Power Output - Rotax 912 i series Operator's Manual

Check of fuel
pumps (fuel pump
modules)
Check the power
output
Effectivity: 912 i Series
OM Edition 1/Rev. 2
NOTE: LANE A and LANE B have different sensor in-
puts. During LANE and IGNITION check some
sensor values are not displayed depending on
the position of the LANE select switches.
Not available sensor values if LANE A = ON and LANE B = OFF:
- Coolant temperature
- Exhaust gas temperatures from cyl. 1-4
- Ambient temperature
- Ambient pressure
- Throttle lever position
Not available sensor values if LANE B = ON and LANE A = OFF:
- Oil temperature
- Oil pressure
It must be ensured that both fuel pumps are working and no loss
of power or uneven running by turning off a fuel pump occurs. The
limits for fuel pressure must not be exceeded
Basic position for the Take-off, both fuel pumps „ON".
Step
Set engine speed to 2000 rpm.
1
2 Turn auxiliary fuel pump OFF for 5 seconds.
3 Check fuel pressure, then turn auxiliary fuel pump ON.
4 Turn main fuel pump OFF for 5 seconds.
5 Check fuel pressure, then turn main fuel pump ON.
NOTICE
To check the acceleration and available power, run the engine at
full load with the aircraft stationary for a maximum of 10 seconds
(take the idle speed from the Operators Manual of the aircraft, as
it depends on the type of propeller being used).
BRP-Powertrain
Procedure
If the fuel pressure is not within the limits, the
cause must be determined. The engine must
not be put into service until the problem is
rectified.
page 3-12
April 01/2014