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ENGINE - ENGINE AERODYNAMIC STATIONS
EFFECTIVITY
GUN ALL 72-00-00
Page 12
D633A101-GUN Jun 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
72-00-00-040
ENGINE - ENGINE AERODYNAMIC STATIONS
ENGINE - ENGINE AERODYNAMIC STATIONS
EFFECTIVITY
GUN ALL 72-00-00
Page 13
D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
72-00-00-040
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
GUN ALL 72-00-00
Page 14
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
72-00-00-060
ENGINE - ACCESSORY DRIVE - COMPONENT LOCATIONS
ENGINE - ACCESSORY DRIVE - COMPONENT LOCATIONS
EFFECTIVITY
GUN ALL 72-00-00
Page 15
D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
72-00-00-060
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
remove the spacer shim to make it easier to remove the fan
blade. The platforms between the blades make the airflow
smooth. The fan retaining flange and retaining ring holds the
fan blade spacer shims and platforms.
You read this information engraved under the root of the fan
blade:
* Part number
* Serial number
* Momentum weight.
When you remove or replace fan blades, record the position
and the serial number of the blades. That lets you do these
tasks:
* Install the blades you removed in the same position to keep
the engine in balance
* Calculate the spare blades position and the momentum
weight correction when you replace blades.
Balance Weight Screws
You balance an engine with balance weight screws. You install
the balance weight screws on the rear spinner.
Offset Holes
The offset holes let you install the spinner cones and the fan
retaining flange in only one correct angular position. Spherical
indents show the offset holes. There are offset bolt holes or
threads on these components:
* Spinner Front Cone
* Spinner Rear Cone
* Fan Retaining Flange
* Fan disk.
Training Information Point
You must remove the spinner front cone to remove the spinner
rear cone. You remove the spinner rear cone, fan retaining
flange and the retaining ring to get access to the fan blades. You
must remove the adjacent platforms and the fan blade spacer
shim to remove a fan blade.
ENGINE - FAN BLADES AND SPINNERS
EFFECTIVITY
GUN ALL 72-00-00
Page 16
D633A101-GUN Oct 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
72-00-00-070
ENGINE - FAN BLADES AND SPINNERS
ENGINE - FAN BLADES AND SPINNERS
EFFECTIVITY
GUN ALL 72-00-00
Page 17
D633A101-GUN Feb 10/2003
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
72-00-00-070

　
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