*
SVA -stator vane actuator
*
TCA -turbine cooling air
*
TCC -turbine case cooling
*
temp -temperature
*
TRA -throttle resolver angle
*
vib -vibration
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PW4000 SERIES ENGINES
777 AIRCRAFT MAINTENANCE MANUAL
ENGINE INDICATING -INTRODUCTION
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ENGINE INDICATING -ENGINE COMPONENT LOCATIONS -LEFT SIDE
Component Locations
These engine indicating components are on the left side of the engine:
*
EGT probes (2)
*
EPR probes (2)
*
E flange accelerometer
*
P flange accelerometer.
The No. 1 bearing accelerometer is in the No. 1 bearing housing (not shown).
The remote charge converter (RCC) is in the strut under the forward No. 3 fairing.
The P2/T2 probe is in the inlet cowl at the 12:30 position.
The permanent magnet alternator (PMA) is on the front face of the main gearbox at the 6:00 position. See the engine control section for more information about the PMA (SECTION 73-21).
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ENGINE INDICATING -ENGINE COMPONENT LOCATIONS -LEFT SIDE
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ENGINE INDICATING -ENGINE COMPONENT LOCATIONS -RIGHT SIDE
Component Locations
These engine indicating components are on the right side of the engine:
*
EGT probe (2)
*
EPR probe (2)
*
N1 speed transducer.
The N1 speed transducer attaches to the intermediate case at the 5:00 position.
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ENGINE INDICATING -ENGINE COMPONENT LOCATIONS -RIGHT SIDE
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ENGINE INDICATING -INDICATIONS -EICAS & SECONDARY ENGINE DISPLAYS
Indications
The EICAS display and the secondary engine display show these engine parameters:
*
EPR, engine pressure ratio
*
N1, LPC rotor speed
*
EGT, exhaust gas temperature
*
N2, HPC rotor speed
*
FF, fuel flow
*
OIL PRESS, oil pressure
*
OIL TEMP, oil temperature
*
OIL QTY, oil quantity
*
VIB, vibration.
Refer to the related ATA chapter for more information about these indications.
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