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CITATION MUSTANG OPERATING MANUAL
7-8 510OM-00
A
B
LP
(FROM) (TO) (TO) (FROM)
L FUEL TANK R FUEL TANK
FIREWALL
SHUTOFF
VALVE
TO PRIMARY
MANIFOLD AND
NOZZLES
TO SECONDARY
MANIFOLD AND
NOZZLES
LOW-PRESSURE
ENGINE PUMP
HIGH-PRESSURE
ENGINE PUMP
INTEGRATED FUEL
METERING AND FUEL
PUMP UNIT
FUEL FLOW
TRANSMITTER
FUEL
BYPASS
FUEL/OIL HEAT
EXCHANGER
OIL IN
OIL OUT
FUEL
FILTER
LOW-PRESSURE
TWO-STAGE SWITCH
FUEL PUMP
EMERGENCY
SHUTOFF
VALVE
(ESOV)
FMU
THROTTLE
TORQUE
MOTOR
FADEC
FROM FUEL TANK
LEGEND
TO FUEL TANK
F/W SHUTOFF L-R
FUEL FLTR BP L-R
FUEL PRESS LO L-R
Figure 7-8. Engine Fuel System
CITATION MUSTANG OPERATING MANUAL
510OM-00 7-9
ENGINE-DRIVEN PUMP
PRESSURE
LEGEND
SCAVENGE OIL
EXHAUST AIR
FUEL
CAS
NO. 1 BRG NO. 2 BRG NO. 3 BRG NO. 4 BRG #5 BRG
NO. 5 SCAVENGE
PUMP
TO ENGINE
EXHAUST
STRAINER
STRAINER
STRAINER
STRAINER
STRAINER
PAV/CSV
ACCESSORY GEAR
BOX SCAVENGE
PUMP
ACCESSORY
GEAR
BOX
CHIP
COLLECTOR
MAIN OIL
FILTER
MAIN OIL
PRESSURE
RESTRICTOR
MAIN OIL
TEMPERATURE MAIN OIL
PUMP
OIL TANK
IMPENDING BYPASS
POP-UP INDICATOR
BYPASS
FUEL/OIL
HEAT
EXCHANGER
AIR/OIL
SEPARATOR
OIL PRESS LO L-R
Figure 7-9. Oil System Schematic
Approved Oils
Check the current list of engine oils in the
“Limitations” section of the Airplane Flight
Manual (AFM). Mixing approved oils is permissible
if they are from the same brand but is
not recommended except in emergency situations.
Refer to the AFM for specific procedures.
NOTE
Maximum oil consumption is 1 U.S.
quart per 13.5-hour period.
Components
Oil Tank
The oil reservoir is an integral part of the
AGB. Total capacity is 5.12 quarts (4.85 liters)
(Figure 7-10).
The engines include a sight glass with MAX
and MIN marks, and a sight-glass access door
to make it more convenient to check the sight
gauge oil level (see Figure 7-6). It has a filler
port for servicing (Figure 7-11). The oil volume
between MAX and MIN is approximately
0.4 quarts. Do not fill above the MAX mark.
After servicing the engine, ensure the engine
oil cap is correctly installed and the
doors secured. The engine is equipped with
a check valve feature to ensure that oil loss
is prevented if the cap is not installed or is
improperly installed.
Oil Pump
An engine-driven oil pump on the forward side
of the AGB pressures oil throughout the engine
to provide for lubrication and cooling.
Strategically located engine-driven scavenge
pumps collect oil from the extremities and
serves to return oil to the tank.
Oil Cooling
The oil cooler is an oil-to-fuel heat exchanger.
It uses output fuel from the low-pressure side
of the engine-driven fuel pump to cool engine
oil. Fuel is heated in the process so that ice
does not form in the fuel (see Figure 7-9).
Oil Filter
The oil filter is a disposable cartridge that removes
solid contaminants. It has bypass
capability; however, there is no cockpit indication
that the oil filter is bypassed. If the
filter is approaching bypass, a poppet valve
opens, pushing a mechanical indicator out
from the valve to indicate that the filter is approaching
bypass (Figure 7-12). This oil filter
bypass indicator is checked during preflight
and postflight inspection.
CITATION MUSTANG OPERATING MANUAL
7-10 510OM-00
AGB WITH OIL TANK OIL FILTER
BYPASS INDICATOR
Figure 7-10. Oil System
Figure 7-11. Oil Filler Port and Sight
Glass Gauge
CITATION MUSTANG OPERATING MANUAL
510OM-00 7-11
Starter-Generators
On each engine, a 28-VDC starter-generator is
attached to the AGB. To start the engines, the
starter uses power from a ground power unit, the
aircraft battery, or the opposite side generator.
After engine start, as the engine exceeds approximately
40% N2, the starter-generator
transitions to operate as a generator. For details
on starter-generators, refer to Chapter
2—“Electrical System.”
CONTROLS AND
INDICATIONS
FADEC
Each engine is controlled and monitored by
its own dual-channel FADEC (Figure 7-13).
　
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