EFFECTIVITY
ALL CFM56 ENGINES
CFMI PROPRIETARY INFORMATION
CFM56-ALL
TRAINING MANUAL
REQUIREMENTS
BORESCOPE INSPECTION
Page 68
Sep 03
CORE ENGINE ROTATION
(ALL) :
The N2 rotor can also be turned with a pneumatic motor.
(-2) :
Pneumatic motor 856A1142 is installed on the
handcranking pad on the left side of the TGB.
(-3) :
Pneumatic motor 856A2002 is installed on the
handcranking pad on the front side of the AGB.
(-5A, -5B, -5C) :
Pneumatic motor 856A1488 is installed on the starter
pad on the rear side of the AGB.
(-7B) :
Pneumatic motor 856A1815 is installed on the
handcranking pad on the front side of the AGB.
(-ALL) :
Supplied by a shop, or line air supply, this device provides
a smooth, even speed for turning the core rotor.
Reversible control, as well as speed control are provided
and the need for an additional mechanic to turn the rotor
is eliminated.
A 360° protractor is integral with the device.
Air drive method:
Install the pneumatic motor assembly on the pad.
The direction of rotation and speed of the core engine
rotor can be selected through a hand, or foot control
device.
Refer to the AMM for instructions on installation and use.
Note : When using the pneumatic motor, the air supply
must be free of unwanted water, or other particles. It is
highly recommended to install a filter upstream and also
a device to add lubricant to the air supply.
TOC