Austro Engine E4 Series - Adjust the Voltage Regulation E4 A-91-100-000; Adjust the Alternator Balancing E4 A-91-100-000 (Only for Twin-Engine Applications); Replace Alternator-Regulator E4 A-91-100-000

E4 Series
Maintenance Manual
Electrical Power
Page 242
E4.08.04
Rev. 29
24-60-00
01-Jul-2020
2. Adjust the voltage regulation E4A-91-100-000
Detail Steps/Work Items
Key Items/References
(1)
Make sure that the engines are at full
operation coolant temperatures.
(2)
Set one engine at the cruising speed.
Adjust the voltage on the operating system
to 28 V at a typical electrical load.
Replace the screw set.
Refer to Fig. 24 - 51.
(3)
Switch off the first engine.
(4)
Switch on the second engine.
(5)
Ajdust the second system to the same
voltage at the same load and engine speed.
Only for twin-engine applications.
3. Adjust the alternator balancing E4A-91-100-000 (only for twin-engine
applications)
Detail Steps/Work Items
Key Items/References
(1)
Switch on both engines.
(2)
Compare the loads for the operation point of
the voltage regulation adjustment.
(3)
If it is necessary to pull the load division
closer together:
- Adjust lower the regulator of the
heavier loaded alternator
- Adjust higher the regulator of the
lower loaded alternator.
(4)
Do a test of the adjustment results:
- Turn on the heaviest loads available
- Change the engine speed.
To prevent significant brush wear
difference on both alternators, the
alternator load current shall be as equal
as possible.
A difference of less than 25 A is strongly
recommended.
(5)
After completion of the regulator
adjustment, fix the regulator set screws with
torque seal.
4. Replace Alternator-Regulator E4A-91-100-000
If it is necessary to replace the alternator regulator type E4A-91-100-000 with the alternator
regulator type E4A-91-200-000, replace also the wiring harness.