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EXHAUST GAS TEMPERATURE (EGT) INDICATING SYSTEM - FUNCTIONAL DESCRIPTION
EXHAUST GAS TEMPERATURE (EGT) INDICATING SYSTEM - FUNCTIONAL DESCRIPTION
EFFECTIVITY
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
The airborne vibration monitoring (AVM) system continuously
supplies engine vibration levels to the CDS.
General Description
The AVM system has these components:
* AVM signal conditioner
* A vibration sensor (accelerometer) near the forward end of
the engine
* A vibration sensor (accelerometer) on the engine fan frame.
The signal conditioner uses the signals from these sensors to
calculate the engine vibration levels:
* No. 1 bearing vibration sensor
* Fan frame compressor case vertical (FFCCV) vibration
sensor
* N1 speed sensor
* N2 speed sensor.
The signal conditioner supplies the vibration data to the display
electronics units (DEUs) and the flight data acquisition unit
(FDAU). The engine vibration normally shows on the secondary
engine display. The secondary engine display usually shows on
the center lower display unit (P2).
The signal conditioner has built-in test equipment (BITE) to help
you do these tasks:
* Troubleshooting system faults
* See and erase vibration data in AVM signal conditioner nonvolatile
memory
* Calculate a balance solution for engine vibration.
AIRBORNE VIBRATION MONITORING (AVM) SYSTEM - GENERAL DESCRIPTION
EFFECTIVITY
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AIRBORNE VIBRATION MONITORING (AVM) SYSTEM - GENERAL DESCRIPTION
AIRBORNE VIBRATION MONITORING (AVM) SYSTEM - GENERAL DESCRIPTION
EFFECTIVITY
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AIRBORNE VIBRATION MONITORING (AVM) SYSTEM - GENERAL DESCRIPTION
AIRBORNE VIBRATION MONITORING (AVM) SYSTEM - GENERAL DESCRIPTION
EFFECTIVITY
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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AIRBORNE VIBRATION MONITORING (AVM) SYSTEM - GENERAL DESCRIPTION
AIRBORNE VIBRATION MONITORING (AVM) SYSTEM - GENERAL DESCRIPTION
EFFECTIVITY
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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General
The AVM system has two vibration sensors (accelerometers)
on the engine and one signal conditioner in the EE
compartment.
Vibration Sensors
The number 1 bearing vibration sensor is inside the engine.
You cannot see this sensor with the engine on the airplane. You
get access to this sensor during engine overhaul. An electrical
connector attaches to this sensor wiring at the fan case. This
connection is aft of the engine oil tank, just above the engine
nameplate.
The fan frame compressor case vertical (FFCCV) vibration
sensor is on the rear fan frame at the 3:00 position. You open
the right fan cowl and the right thrust reverser cowl to get
access to this sensor.
AVM Signal Conditioner
The AVM signal conditioner is on the E3-2 shelf.
AVM SYSTEM - COMPONENT LOCATION
EFFECTIVITY
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AVM SYSTEM - COMPONENT LOCATION
AVM SYSTEM - COMPONENT LOCATION
EFFECTIVITY
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
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