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71-EFFECTIVE PAGES
Page 1
D633A101-GUN Jun 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
CHAPTER 71
Power Plant
CH-SC-SU Subject Page Effectivity
71-00-00 POWER PLANT - INTRODUCTION 2 GUN ALL
71-00-00 POWER PLANT - SPECIFICATIONS 4 GUN ALL
71-00-00 POWER PLANT - ENGINE HAZARDS 6 GUN ALL
71-00-00 POWER PLANT - ENGINE MOUNTS 8 GUN ALL
71-00-00 POWER PLANT - ELECTRICAL HARNESSES 10 GUN ALL
71-00-00 POWER PLANT - ENGINE DRAINS 12 GUN ALL
71-11-00 POWER PLANT - ENGINE COWLING 2 GUN ALL
71-11-00 POWER PLANT - FAN COWL 4 GUN ALL
71-CONTENTS
Page 1
D633A101-GUN Jun 10/2002
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
CHAPTER 71
Power Plant
THIS PAGE IS INTENTIONALLY LEFT BLANK
71-00-00
Page 1
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.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
General
Two CFM56-7B engines supply thrust for the airplane. The
engines also supply power for these systems:
* Electric
* Hydraulic
* Pneumatic.
The CFM56-7B is a high bypass ratio, dual rotor, turbo fan
engine.
Power Plant
The power plant has these parts:
* Engine mounts
* Engine cowling
* Wire harnesses
* Engine vents and drains.
Acronyms and Abbreviations
GUN ALL PRE SB CFM56-7B 73-44
* BSV - burner staging valve
GUN ALL
* C - celsius
* cm - centimeters
* ft - feet
* HMU - hydromechanical unit
* HPTACC - high pressure turbine active clearance control
* LPTACC -low pressure turbine active clearance control
* IDG - integrated drive generator
* in - inches
* kg - kilograms
* lbs - pounds
* m - meters
* RPM - revolutions per minute
* TBV - transient bleed valve
* VBV - variable bleed valve
* VSV - variable stator vanes
POWER PLANT - INTRODUCTION
EFFECTIVITY
GUN ALL 71-00-00
Page 2
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.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
71-00-00-000
POWER PLANT - INTRODUCTION
POWER PLANT - INTRODUCTION
EFFECTIVITY
GUN ALL 71-00-00
Page 3
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.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
71-00-00-000
General
General engine data for the CFM56-7B engine is shown.
These items show on the engine nameplate:
* Regulatory agency data
* Engine manufacture data
* Engine performance data.
The regulatory agency data blocks used depend upon where
the engine was assembled. For engines assembled by G.E. the
two upper right blocks will be used. For engines assembled by
SNECMA, the two upper left blocks will be used. The serial
number will be filled every time.
The first line of seven blocks will be filled at the assemble plant.
The version of the engine will be in the CONFIG space. The
second and third blocks show takeoff and Max continuous thrust
in Metric (daN) thrust ratings. The fourth and fifth blocks show
takeoff thrust and the Max continuous thrust in pounds (LB).
Block six shows the N1 trim applied to that engine. The last
block is for service bulletins applied to this engine.
The lower three blocks show the manufacturer data. The
second block shows the manufacturer of the engine. For
engines assemble by General Electric, the block shows G.E.
CO. Engines assembled by SNECMA, the block shows
SNECMA.
Six additional rows are available to show changes to the
engine. This permits six different thrust rating changes before
you must replace the nameplate. The nameplate also shows the
thrust rating history of the engine.
The engine nameplate is on the right fan case aft of the oil tank.
Engine Thrust Ratings and Aircraft Model Application
A limited number of the six engine thrust rating configurations
are applicable to a 737 model. The different engine thrust
ratings are based upon airplane weight and elevator/rudder
control limits. The longer-body 737-800 and 737-900 models can
operate at the maximum thrust capability of the CFM56-7B
engine. Also, the lowest thrust rating is not sufficient for the 737-
700, 737-800, 737-900. The table below shows the relationship of
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