Boeing 737-800 - Engine Fuel and Oil System Schematic

737 Flight Crew Operations Manual
Engines, APU -
Engine System Description
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 7.20.9
Engine Fuel and Oil System Schematic
OPERATION
OIL
QUANT
OIL
TANK
C
SCAVENGE
FILTER
FUEL PUMP
SECOND
STAGE
FILTER
OIL
PUMP
SCAVENGE
PUMPS
OIL
CONDITION:
NORMAL ENGINE
FUEL
OIL
C
FUEL
FILTER
BYPASS
ENGINE FUEL
SHUTOFF VALVE
TO BEARINGS
AND GEAR BOXES
COMBUSTOR
FUEL
FLOW
OIL
PRESS
EEC
TRANSMITTER
VIA EEC
FUEL FLOW
ENG VALVE
CLOSED
CLOSED
FIRST STAGE
FUEL PUMP
SHUTOFF VALVE
FROM FUEL
VIA
EEC
VIA
EEC
OIL
TEMP
OIL FILTER
BYPASS
VIA
EEC
OIL COOLER
MAIN ENGINE
OIL COOLER
SPAR VALVE
SPAR FUEL
VIA
EEC
VIA
EEC
PRESSURE
LOW OIL
IDG FUEL-COOLED
NOTE:
ALL ENGINE OIL AND FUEL
INDICATIONS (EXCEPT OIL
QUANTITY AND ENGINE VALVE
CLOSED) ARE SENSED BY THE
EEC, DIGITIZED, AND SENT
TO THE CDS.
RETURN
TANK
HMU
B
B
B
September 26, 2013