Austro Engine E4 Series - Install the High Pressure Pump (HPP)

E4 Series
Maintenance Manual
Engine Fuel
System
E4.08.04
Rev.29
Page 215
73 - Maintenance Procedures
01-Jul-2020
B. Install the High Pressure Pump (HPP)
Detail Steps/Work Items
Key Items/References
(1)
Lightly lubricate the rubber gasket with engine
oil.
(2)
Fill the pump with fuel (if not already filled).
(3)
Put the HPP into the rear housing.
(4)
Tighten the screws that attach the HPP.
Torque 12 Nm.
Refer to Fig. 73 - 15.
(5)
Tighten the flare nut of the fuel pipe.
Torque 22 Nm.
Refer to Fig. 73 - 16.
(6)
Tighten the banjo bolt of the fuel return line with
the new sealing rings.
Torque 25 Nm.
Refer to Fig. 73 - 16.
Do not use Loctite on thread with grease!
Apply only a thin film of Loctite!
(7)
Tighten the banjo bolt with the fuel pressure
sensor.
Use Loctite 243 and new sealing
rings.
Torque 22 Nm.
Refer to Fig. 73 - 16.
(8)
Bend and align the fuel supply line.
Refer to the applicable Aircraft
Maintenance Manual.
(9)
Install the connector (FMU).
Refer to Fig. 73 - 15.
(10)
Install the connector (FTS).
(11)
Install the connector (FPS).
(12)
Clean the working area.
(13)
Do an engine ground run.
Refer to Section 71-00-01.
After the ground run the engine
must be cooled down (40°C-50°C /
104°F-122°F).
Make sure that the engine cools down, before you do any work on the
engine. Contact with the hot engine can cause severe burns.
(14)
Tighten the banjo bolt of the fuel return line.
Torque 25 Nm.
Refer to Fig. 73 - 16.
(15)
Safety the banjo bolt of the fuel return line with
lock-wire.
Refer to Fig. 73 - 16.
(16)
Examine the fuel system for leakage.