VENT
TUBE
Reserve and Main Tank Air Pressure Check
Figure 611 (Sheet 1)
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MAINTENANCE MANUAL
COUPLING
IN THE VENT LINE. PUT THE RUBBER STOPPER IN THE OUTBOARD SECTION OF THE VENT TUBE.
2
INSTALL A G28019-2 (CAP ASSEMBLY) (ONE IN EACH VENT LINE OPENING)
Reserve and Main Tank Air Pressure Check
Figure 611 (Sheet 2)
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MAINTENANCE MANUAL
NOTE:INSTALL THE PRESSURE TEST DOOR (G28019-18) IN THE ACCESS DOOR FOR THE FUEL TANK THAT WILL BE PRESSURIZED.
Reserve and Main Tank Air Pressure Check Figure 611 (Sheet 3)
L83850
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MAINTENANCE MANUAL
S12 VALVE
S13 3
FLOAT VALVE 3
WS
1162
VENT DRAIN
VALVE
UP
4
FWD
VENT TUBE INBD
FUEL VENT FLOAT VALVE
FUEL VENT FLOAT VALVE
C
D
VENT TUBE
FWD
SEALED WING INBD STRINGER
UP
FLOAT
VENT
DRAIN
SHROUD
VALVE 4
4
FUEL VENT DRAIN VALVE
MIDSPAR
(EXAMPLE)
WS
VENT
E 944.50
FLOAT VALVE (2 LOCATIONS)
3
FUEL VENT FLOAT VALVES
3
INSTALL A G28019-4 (SPONGE) ON TOP
OF THE FLAPPER VALVE. F 4
INSTALL A G28019-5 (RUBBER STOPPER)
IN ONE OF THE 4 HOLES IN THE
THE BOTTOM OF THE DRAIN VALVE.
Reserve and Main Tank Air Pressure Check
Figure 611 (Sheet 4)
F80937
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LINE. PUT THE RUBBER STOPPER IN THE AFT SECTION OF THE VENT TUBE.
Reserve and Main Tank Air Pressure Check
Figure 611 (Sheet 5)
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MAINTENANCE MANUAL
VENT FLOAT VALVE (2 LOCATIONS)
FUEL SCAVENGE FLOAT VALVE
(AIRPLANES WITH A HYDROMECHANICAL FUEL SCAVENGE SYSTEM)
Reserve and Main Tank Air Pressure Check
Figure 611 (Sheet 6)
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MAINTENANCE MANUAL
INSTALL A G28019-3 (SCREW CLAMP) ON THE REFUEL/JETTISON MANIFOLD DRAIN. YOU CAN ALSO REMOVE THE DRAIN AND INSTALL A RUBBER STOPPER. (PUT A TIE STRAP AROUND THE MANIFOLD AND RUBBER STOPPER). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 燃油 FUEL 1(72)
