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ENG IGN B BATTERY
BUS 5 B10
Vol. 1 20--40--1
POWER PLANT
Oil System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
1. OIL SYSTEM
Each engine has an independent lubrication supply system. Each system consists of an oil
pump and an oil reservoir which is integral to the accessory gearbox. The pressure pump
draws oil from the reservoir and supplies it to the various engine components for cooling and
lubrication. A usable oil quantity of 7.2 quarts (6.8 liters) allows 36 hours of operation at the
maximum allowable oil consumption rate of 0.05 U.S. gallons per hour (189 ml/hr).
Oil temperature and pressure indications are displayed on the EICAS primary page. Oil filter
impending bypass and chip detector indications are provided on the engine fault panel in the
aft equipment compartment.
The lubrication system is pressurized by the main lube pump. The oil flows from the pump,
passes through an oil filter and the oil/fuel heat exchanger. The oil then continues through
the engine, for cooling and luricating, then to the engine sumps. Scavenge pumps return
the oil to the reservoir after passing through a chip detector and de-aerator.
Sensors for the oil pressure indication and EICAS messages are located in the oil filter
module mounted on the forward side of the oil tank. The chip detector also mounts on the
accessory gearbox, in the scavenge oil return line.
During engine start, the oil pressure indications on the EICAS primary page are displayed
with an analog gauge and a digital readout. When both engines are started and oil pressure
is normal, the oil pressure gauges revert to N1 vibration gauges. The digital oil pressure
indication remains.
Left and right engine oil tank quantities are shown on the EICAS MENU page.
OIL LEVEL INDICATION AND DURATION TABLE
ENGINE OIL LEVEL INDICATION, %
STOPPED 1 RUNNING
DURATION OF AVAILABLE OIL
UNTIL NEXT SERVICE, HOURS
100% 77% 36 hrs
80% 57% 26 hrs
50% 27% 10 hrs (1 day)
40% 17% 5 hours (1 flight)
< 40% DO NOT DISPATCH < 17% DO NOT DISPATCH
28 %
Do not operate service the oil
15%
Complete the flight monitor oil
NOTE: There is no EICAS OIL LEVDo
operate, EL indication if the oil quantity is
tank 1
flight, temp and pressure.
less than 15%.
1 The engine oil level check should be accomplished within 3 minutes to 1 hour after engine shutdown.
Vol. 1 20--40--2
POWER PLANT
Oil System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Oil Distribution System --- Schematic <1213>
Figure 20---40---1
AIR OVERBOARD
VIA DRAIN MAST
IN
AGB
ASUMP
ENGINE
OIL
FAULT
PANEL
(AFT
EQUIPMENT
BAY)
LUBE AND SCAVENGE
PUMP ASSEMBLY
IMPENDING
BYPASS SWITCH
PUMP
RELIEF
VALVE
MASTER
CHIP
DETECTOR
SCAVENGE
DEAERATOR
RELIEF
VALVE
GRAVITY
FILLER
FUEL
OUT
FUEL OIL HEAT
EXCHANGER
EICAS DCUs
LOW
PRESSURE
SWITCH
OIL LEVEL/OIL
TEMPERATURE
SENSOR
P
P
P
P
P
AIR/ OIL
SEPARATOR
P
A
OIL FILLER/ TANK
LEVEL INDICATOR
A
GRAVITY
SCAVENGE
B SUMP
SEAL AIR
REG VALVE
SCAVENGE
C SUMP
SCAVENGE
SEAL
DRAIN
REPLENISHMENT
TANK
PL113 OIL LEVEL
CONTROL
PANEL
(AFT EQUIPMENT BAY)
REMOTE OIL
REPLENISHMENT SYSTEM
MPE29
PUMP
P
CB5--B2
CBP--5 (JB--5)
FILTER
Vol. 1 20--40--3
POWER PLANT
Oil System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Oil System --- Oil Temp and Pressure EICAS Indications <1001>
Figure 20---40---2
Oil Pressure Gauges
Indicates engine oil pressure.
Replaced by FAN VIB gauges
when both engines are
running and oil pressure is
above 24 psi.
Primary Page
Vol. 1 20--40--4
POWER PLANT
Oil System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Oil System --- Oil Test and Oil Levels Controls and Indications
Figure 20---40---3
CHIP DETECTOR
Indicator OFF --
Respective oil system
operating normally.
Indicator ON -- Chip
detection on the
detection on the
respective side is
indicated.
Engine Oil Fault Panel
Aft Equipment Bay
TEST
Used to test indicating
system. Oil filter and
chip detector, LED
indicators, indicate that
the system is operational.
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