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the vent relief valves, water drain valves and the NACA vents.
B. Refuel/Defuel Control Test
A test must be performed to verify the overfill protection of the refuel/defuel system. The
following are checked during the test:
• High level sensor failure, and
• SOV failure.
NOTE
Fuel pressure is required to perform the refuel/defuel control test.
Ensure that fuel tender pressure is applied before activating any
switches.
(1) POWER switch..........................................................On
• Check that the ON light comes on.
(2) Ensure that the fuel tender pressure is not more than 379 kPa (55 psi).
(3) SHUTOFF TEST ...................................................TEST
• Check that the SOV OP lights come on, HIGH LEVEL SENSOR lights come on in
sequence (left main, right main, tail and auxiliary tank), SOV OP lights go out, SOV
CL lights come on.
SUPPLEMENTARY PROCEDURES
Fuel System
Vol. 1 06−06−1
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
1. REFUELING/DEFUELING (CONT'D)
C. Pressure Refueling
NOTE
Fuel pressure is required to perform the pressure refueling. Ensure that fuel
tender pressure is applied before activating any switches.
(1) Ensure that the airplane and the fuel tender are grounded.
NOTE
1. If the grounding wire has an alligator clip, attach the clamp to
the grounding lug on the right side wall of the nose gear
compartment.
2. If the grounding wire has a ground stud, put the stud in the
nearest ground stud receptacle on the wing leading edge.
(2) Fuel/Defuel panel .................................................. Open
(3) POWER FUEL switch.............................POWER FUEL
The flight compartment refuel/defuel control panel, if installed, will override the fuselage
refuel/defuel control panel.
(4) Ensure that the fuel tender pressure is not more than 379 kPa (55 psi).
(5) SOV switches ...................................Open (as required)
• To initiate pressure refueling.
• Check that the applicable SOV CL lights come on, when the preselected fuel quantity
has been reached.
(6) SOV switches ..................................................CLOSED
(7) POWER FUEL switch..............................................OFF
(8) Refuel/Defuel panel.............................................Closed
(9) Ensure that:
• Fuel nozzle is disconnected and the refuel/defuel adapter is capped.
• All grounding cables disconnected.
• Refuel/Defuel Adapter panel access door closed.
D. Gravity Refueling
Gravity refueling is enabled through overwing filler caps (3) on the upper wing surface. The
main tanks have their respective filler caps on each side of the wings. The aux tank has its
filler cap installed near the wing root on the right upper wing surface.
Caution must be observed not to overfill a tank. Gravity filler caps for the main tanks are
located below the maximum fuel level, thus the tanks cannot be filled to the maximum. Do not
open the gravity filler caps if the tanks are full, or if the fuel quantity is not known.
SUPPLEMENTARY PROCEDURES
Fuel System
Vol. 1 06−06−2
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
1. REFUELING/DEFUELING (CONT'D)
E. Pressure Defueling
Automatic defueling is accomplished by selecting the POWER switch to DEFUEL, and SOV
switches to ON. In the defuel mode, the SOVs are de-energized open with the SOV switches
selected to ON. Suction is then applied through the refuel/defuel hose adapter, which is
connected to the single-point adapter, and the tanks will then defuel.
F. Gravity Defueling
Gravity defueling may be accomplished through fuel tank drain valves (3), located on the
underside of the wings. The main tanks’ fuel drain valves are installed near the wing root on
the underside of each wing. The center tank fuel drain valve is located near the wing root,
underside of the left wing. A gravity defueler adapter can then be inserted into the valve, after
it has been opened, to start gravity defueling.
SUPPLEMENTARY PROCEDURES
Fuel System
Vol. 1 06−06−3
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
SUPPLEMENTARY PROCEDURES
Fuel System
Vol. 1 06−06−4
REV 66, Feb 01/07
CL−604 Operating Manual
PSP 604−6
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1. TAXIING WITH FLAT TIRE(S)
If the airplane experiences a tire blowout or a flat on one tire on the runway, clear the runway as
soon as possible, so as not to obstruct other traffic. Taxi as slow as possible, using the least
　
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