
Jabiru J450 Constructors Manual
Pre-Paint>Fuselage>Firewall forward>Fuel pump fittings
Tuesday, April 6, 2010
74 of 343
Fit the fuel lines and drain hoses
The fuel lines are connected in 2 runs: from the firewall fitting to the engine-driven fuel
pump; and from the engine-driven fuel pump to the carburettor fuel inlet fitting. If you are
fitting a fuel flow or fuel pressure sensor it should be inserted into the fuel line between the
fuel pump and the carburettor at a point near the midpoint of the line.
Cut some black fuel line to length for each run, allowing enough length for the fuel line to be
routed smoothly between each pair of fittings. Cut some fireproof sleeving to the same length
as each fuel line. Slip the fireproof sleeving over the fuel lines and roll the ends back so that
you can fit the hose clamp over each end of the fuel line. Make sure that each fuel line is clear
by blowing through it to remove any dust or debris before fitting.
Note that the fuel pump inlet is on the
side of the pump and the outlet is on the
top of the pump as pictured at right.
Use the flow arrows in the 2 photos on
this page to help you visualise the fuel
flow to and from the fuel pump.
Fit the top fuel line into place: this line
runs from the top fitting on the fuel pump
to the fuel inlet fitting on the carburettor.
Fit the lower fuel line into place: this line
runs from the fuel fitting on the firewall to
the side fitting on the fuel pump.
Roll the fireproof sleeving over the hose clamps and lock-wire the sleeve into place using a
double loop of lock wire around both sides of the hose clamp.
Fit the fuel breather and fuel pump drain (clear) hoses, route back to the firewall and zip tie to
the lower right engine mount tube and leave enough length for the hoses can be routed back to
the firewall and end 50mm below the bottom of the firewall step.
This completes the
Pre-Paint>Fuselage>Firewall forward>Connect fuel pump
task.
Breather
Drain
Fuel in
Fuel out
Fuel to
carb
Fuel from
pump to carb
Fuel from firewall
fitting to pump
Breather
Drain
Fuel in
Fuel out
Содержание J450
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