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more information on cowl and wing antiicing,
see Chapter 14 ICE AND RAIN PROTECTION.
POWER PLANT
Flight Crew Operating Manual REV 41, Jul 08, 2004
CSP 700−6
Volume 2
18−10−4
ENGINE OIL SYSTEM
The function of the oil system is to lubricate and cool the engine bearings and gears. The system is a
full flow recirculating type.
The oil for the engine is stored in a tank, which is an integral part of the accessory gearbox. An oil
pump takes the oil from the tank to supply the front bearing chamber, the rear bearing chamber and
the accessory gearbox, via an oil pressure filter and a fuel cooled oil cooler (FCOC). An oil
replenishment tank is located in the aft equipment bay.
GF1810_006
MCD MCD MCD
R
PRV PRV
PRESSURE
FILTER
OIL
REPLEN
TANK
DEAERATOR
PRV
VENT
PRESSURE
PUMP
DIFFERENTIAL
PRESSURE
TRANSDUCERS
AIR OVERBOARD REAR
BEARING
CHAMBER
FRONT
BEARING
CHAMBER
ACCESSORY
GEARBOX
VENT
VENT VENT
SCAVENGE
OIL TEMPERATURE PUMP
BULB
R
DIFFERENTIAL
PRESSURE SWITCH
QUANTITY
TRANSMITTER
POPOUT
INDICATOR
MAGNETIC CHIP
DETECTOR
FLOW
RESTRICTOR
PRESSURE RELIEF
VALVE
STRAINER
FCOC
BREATHER
T
The oil quantity transmitter provides indication to the STATUS page 0.8 ENG 12.3 and will
display an OIL LO QTY message if the oil quantity is low.
The pump supplies pressure to move the oil to the bearings and drive gear and to return it to the
tank. The oil pressure transducer provides an indication of the pressure between the oil feed and
scavenge lines and displays it on EICAS. 81 OIL PRESS 81
If the oil pressure is low, while the engine is running, an OIL LO PRESS message is displayed on
EICAS. 23 OIL PRESS 81
Oil is fed to the pressure filter. The filter removes debris prior to delivery to the bearing/gears. A
pressure relief bypass valve allows oil to bypass the filter in the event of filter blockage and an
OIL FILTER message will be displayed on EICAS, indicating an impending bypass.
POWER PLANT
REV 41, Jul 08, 2004 Flight Crew Operating Manual
CSP 700−6
Volume 2
18−10−5
ENGINE OIL SYSTEM (CONT'D)
The oil temperature bulbs provide oil temperature to the EEC. This data is used by the Heat
Management System and is also sent to EICAS. 115 OIL TEMP 1 1 5
Engine Oil Heat Management System
Oil cooling is achieved by the Fuel Cooled Oil Cooler (FCOC). The oil cooler dissipates the engine
oil system heat by exchanging heat between engine lubricating oil and low pressure fuel. It also
warms the low temperature fuel to prevent the formation of ice particles in the fuel entering the
Fuel Metering Unit (FMU).
GF1810_011
FUEL
FLOW TX
HP
FILTER
LP
PUMP FMU
LP
FILTER
ENGINE
GEARBOX
T T
HP OIL FEED
AIRPLANE
FUEL SUPPLY
TO
SCAVENGE TO FUEL
NOZZLES
TEMPERATURE
PROBE
FCOC HP
PUMP
POWER PLANT
Flight Crew Operating Manual REV 41, Jul 08, 2004
CSP 700−6
Volume 2
18−10−6
ENGINE OIL SYSTEM (CONT'D)
Oil Replenishment System
Each engine oil tank capacity is 10.98 US qts (10.4 liters). Engine oil level is measured using a
sensor (oil probe) which is located in the engine oil tank and provides quantity information on the
STATUS display on the ground only.
Effectivity:
· Airplanes 9002 thru 9119 not incorporating Service Bulletin:
· SB 700−31−018, Integrated Avionics Computers (IAC) − Avionics 2001 Batch 1 IAC
Upgrade.
Engine oil level is measured using a sensor (oil probe) which is located in the engine oil tank and
provides quantity information on the STATUS display.
GF1810_012
ENGINE OIL TANK
ENGINE OIL TANK
OIL QTY (QTS)
ENG
APU
RES
10.4
4.5
5.0
10.4
An oil replenishment tank is located in the aft equipment bay and contains an electrical pump and
sensor probe for quantity level. The oil replenishment tank volume contains 6 US quarts (5.7
liters). The oil replenishment system is designed for ground use only and serves both main
engines and the APU.
The system can be operated using the battery or external electrical power. Oil level monitoring is
required during servicing the engine(s) to verify that the system stops when the full level is
reached.
The oil filling system is operated through the oil replenishment panel located on bulkhead 280 (left
　
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