Fuel System SGR
B737-700/800/900 Fuel System
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The Fuel System condition in this schematic depicts both engines operating , center tank empty, crossfeed valve open, crossfeed VALVE OPEN light illuminated dim blue, and the
number 2 main tank supplying fuel to both engines. The center tank pumps are OFF and the respective LOW PRESSURE lights are extinguished. The number 1 main tank pumps are
OFF and the respective LOW PRESSURE lights are illuminated. This configuration is used to correct an imbalance between main tanks.
number 2 main tank supplying fuel to both engines. The center tank pumps are OFF and the respective LOW PRESSURE lights are extinguished. The number 1 main tank pumps are
OFF and the respective LOW PRESSURE lights are illuminated. This configuration is used to correct an imbalance between main tanks.
Engine Valve
Spar Valve
Engine Valve
Spar Valve
Engine Fuel Pumps
Engine Fuel Pumps
| Check Valves |
Crossfeed Valve
Fuel Temperature
Sensor
Sensor
APU Fuel
Shuttoff Valve
Shuttoff Valve
Engine
Suction Feed
and Bypass
Valve
Suction Feed
and Bypass
Valve
Engine
Suction Feed
and Bypass
Valve
Suction Feed
and Bypass
Valve
| Center Tank Pumps |
APU Fuel Pump
Engine 1
Forward
Pump
Forward
Pump
Engine 2
Forward
Pump
Forward
Pump
Engine 1
Aft
Pump
Aft
Pump
Engine 2
Aft
Pump
Aft
Pump
Fuel Pressure Sensors
Center Tank
Fuel Scavenge
System
Fuel Scavenge
System
HMU
HMU
Fuel Flow
Transmitter
Transmitter
Fuel Flow
Transmitter
Transmitter
