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bearing assembly. Both number 3 bearings hold the front of the
N2 shaft.
The number 4 bearing holds the rear of the N2 shaft.
The number 5 bearing holds the rear of the N1 shaft.
The number 1, 2, and 3 bearings are in the forward sump. The
number 4 and 5 bearings are in the rear sump.
ENGINE - MAIN ENGINE BEARINGS
EFFECTIVITY
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ENGINE - MAIN ENGINE BEARINGS
ENGINE - MAIN ENGINE BEARINGS
EFFECTIVITY
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
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General
The engine has 16 flanges. The flanges are identified with an
alphanumeric designation. The flanges hold various
accessories and components. You use the alphanumeric
designations to find the position of components on the engine.
ENGINE - ENGINE FLANGE LOCATION
EFFECTIVITY
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ENGINE - ENGINE FLANGE LOCATION
ENGINE - ENGINE FLANGE LOCATION
EFFECTIVITY
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General
There are probes or sensors at these 5 aerodynamic stations
on the CFM56-7.
* Station 0 (ambient air)
* Station 12 (fan inlet)
* Station 25 (high pressure compressor inlet)
* Station 30 (high pressure compressor discharge)
* Station 49.5 (stage 2 low pressure turbine stator).
See the engine fuel and control chapter for more information on
engine fuel and control. (SECTION 73-00)
See the engine indicating chapter for more information on the
probes and sensors. (SECTION 73-21)
ENGINE - ENGINE AERODYNAMIC STATIONS
EFFECTIVITY
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ENGINE - ENGINE AERODYNAMIC STATIONS
ENGINE - ENGINE AERODYNAMIC STATIONS
EFFECTIVITY
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General
The accessory gearbox (AGB) is on the left side of the engine,
on the fan inlet case. The AGB sends torque from the N2 rotor
through spur gears to turn the engine and airplane accessories.
They are line replaceable units. You get access to the AGB and
the accessories when you open the left fan cowl.
Accessories Locations
These engine and airplane accessories are on the front face of
the AGB:
* EEC alternator
* N2 sensor
* Hand cranking pad
* Engine air starter
* Integrated drive generator (IDG)
* Hydraulic pump.
These engine accessories are on the rear face of the AGB:
* Fuel pump package (fuel pumps, HMU, and main oil/fuel
heat exchanger)
* Lubrication unit
* Scavenge oil filter.
Training Information Point
You use the hand cranking pad to turn the N2 rotor during
borescope inspection.
ENGINE - ACCESSORY DRIVE - COMPONENT LOCATIONS
EFFECTIVITY
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ENGINE - ACCESSORY DRIVE - COMPONENT LOCATIONS
ENGINE - ACCESSORY DRIVE - COMPONENT LOCATIONS
EFFECTIVITY
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Front and Rear Spinner Cones
The front and rear spinner cones are aerodynamic fairings
which direct engine inlet airflow.
Fan Blades
There are 24 wide-chord, titanium fan blades. A spacer shim
under each fan blade holds it in the correct radial position. You
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