*
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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