Austro Engine E4 Series - 4. Gearbox

E4 Series
Maintenance Manual
Reciprocating
Engine
E4.08.04
Rev. 29
Page 207
85-Maintenance Procedures
01-Jul-2020
4. Gearbox
A. Remove the Gearbox
Detail Steps/Work Items
Key Items/References
(1)
Put a container with minimum 3 liters below
the gearbox drain plug.
(2)
Open the gearbox filler plug.
Refer to Fig. 85 - 21.
(3)
Open the gearbox magnetic drain plug.
Refer to Fig. 85 - 17 and Fig. 85 - 20.
(4)
Drain the coolant.
Refer to the applicable Aircraft
Maintenance Manual.
(5)
Remove the propeller.
(6)
Disconnect the electrical connector marked
“GOV” from the governor solenoid.
Refer to Fig. 85 - 21.
Secure the connector and the socket
with a cap.
(7)
Remove the pressure line from the governor,
if installed before.
Refer to Fig. 85 - 21.
Refer to the applicable Aircraft
Maintenance Manual.
(8)
Disconnect the electrical connector marked
“GBTS” from the gearbox temperature
sensor.
Refer to Fig. 85 - 21.
Secure the connector and the socket
with a cap.
(1)
Disconnect the electrical connector
“CTS_GPC” from the coolant temperature
sensor.
Only for “-A” engine configuration, if
the gearbox has an optional oil cooler
installed.
Refer to Fig. 85 - 22.
(9)
Remove all edge clips of the cable branch for
the crankshaft sensor.
Refer to Fig. 85 - 21.
(10)
Remove the engine starter.
Refer to Section 80-10-00 Paragraph
2.A.
(11)
Remove the lock-wire from the hose clamps.
Refer to Fig. 85 - 22 and Fig. 85 - 23.
(12)
Loosen the screws from the hose clamps at
the connecting hose.
(13)
Discard the clamps.
(14)
Remove the coolant hose from the gearbox
hose connector, which connects the gearbox
and the (cabin air) heat exchanger.
Refer to the applicable Aircraft
Maintenance Manual.
(15)
Install the forward engine-lifting eyelet, if not
installed before.
Refer to Fig. 85 - 21.
(16)
Lift the engine with slings on the forward
lifting eyelet and apply slow force.
(17)
Open and remove the right and left front
engine mounts.
Refer to the applicable Aircraft
Maintenance Manual.
Refer to Fig. 85 - 18 and Fig. 85 - 19.