Wren 44 TurboProp Users Manual. Copyright Wren Turbines Ltd February 2008 Page 24
After fuelproofing the engine area the engine
unit can now be offered up and secured into
place.
If you don’t have the opportunity or space for a
chin inlet then a “cheat” inlet for the engine air
can be made in the lower fuselage (see above
right). A cutout has been made and covered in
a fine mesh. At a distance or in flight it is not
noticeable. The engine cowl needs trimming to
fit the exhaust system. Try to leave about
6mm (1/4”) all round it to prevent any heat cracking or spoiling of the paint finish.
R
efer to the Wiring and Services Schematic on page 22 to confirm the order and location of all
the ancilliaries, the fitting of which follows.
Fuel Pump
The fuel pump should be mounted close to the fuel tank to ensure only a short
pipe run is needed. Note the direction of flow on the pump. Fit it with the black
cap upwards if possible and with the pipes accessible – just in case!
Fuel valve
The fuel valve should be
positioned fairly close to the
pump but this is less critical.
Note the flow direction is
marked on the valve.
The pressure outlet from the
fuel valve then leads to the
engine fuel filter and on into the
engine.
Only make and break the
engine fuel line at the quick-
release connection on the fuel filter. This keeps the engine protected from dirt getting into the
system – but keep everything spotlessly clean anyway.
To Engine
From fuel
tank
