Learjet 35A - Page 118

FUEL MANAGEMENT (CONT)
AUXIUARY FUSElAGE FUEL TRANSFER (Aircraft with FUS
VALVE Switch)
This procedure may be used to minimize transfer pump operation and may
be used
only if Jet Pumps are operating.
1. STANDBY PUMP Switches - Off.
NOrE~ Activation of standby pumps will override gravity trans-
-r fer and cause the right transfer and crossflow valves to
close.
2. FUS
VALVE Switch - OPEN when tip tank fuel quantity indicates
760 pounds or less in each tank. When OPEN is selected the right
fuselage transfer valve and the crossflow valve
will open. Fuel will
gravity flow from the fuselage tank until the wing tank heads are
equal.
E~
If the crossflow valve fails to open, a right wing heavy
condition
will occur.
3. FUS VALVE Switch - CLOSE, when wing fuel quantity starts to
decrease
or prior to approach.
NOrE~ If the right fuselage transfer valve (FUS VALVE) is al-
-r lowed to remain open when normal transfer is activat-
ed, some
fuel will recirculate into the fuselage tank
through the right transfer line.
4. FUS TANK XFER-ALL Switch - XFER.
5. FUS TANK XFER-ALL Switch - OFF when EMPTY light comes
on.
FAA APPROVED 4-30-76
REISSUED 2-25-81, CHANGE 12
2-61