73-00-43 Installation of the spur gear onto High Pressure Pump
For references refer to figure of Chapter 73-00-42 – Removal of the spur gear.
1. Put the spur gear [2] onto the High Pressure Pump [3].
2. Screw on the hexagon nut M14x1.5 [1]. Check the fit of the spur gear.
3. Use the special tool AE300T-012-1 as counter torque wrench.
4. Tighten the nut with a torque of 70 Nm.
5. Check if the sealing [4] ring is installed at the High Pressure Pump.
6. Install the High Pressure Pump according to chapter 73-00-44.
73-00-44 Installation of the High Pressure Pump
1. Slightly lubricate the rubber gasket with engine oil.
2. Fit on the high pressure pump assy.
Fill the pump with fuel before installing (if not already filled)
3. Screw down the screws [6] with 12 Nm.
4. Screw on the coupling nut [5] with 22 Nm.
5. Install the banjo bolt [4] with new sealing rings and torque that with 25 Nm.
6. Install the banjo bolt [9] with the FPS, use Loctite 243 and new sealing rings and
torque that with 22 Nm.
When using Loctite, make sure, that the thread is free of grease and apply only a thin
film of Loctite.
7. Mount the fuel line - refer to the applicable Aircraft Maintenance Manual.
8. Fit on the connector [1] (FMU).
9. Fit on the connector [7] (FTS).
10. Fit on the connector [8] (FPS).
11. Clean working area.
12. Perform an engine ground run according to Chapter 71-00-03.
13. After the ground run the engine must be cooled down (40°C-50°C / 104°F-122°F) for
a further tighten of the banjo bolt [4] with 25 Nm.
14. Install a safety wire [3].
15. After the ground run inspect fuel system for leakage.
For picture see Chapter 73-00-50 – Low Fuel pressure sensor.