Cfm56-7b Familiarization Print

CFM56-7B General Familiarization - 1 -CFM56-7B General FamiliarizationTechnical Training For training purposes only

© MTU Maintenance Hannover GmbH

MTU Maintenance HannoverTitle page

CFM56-7BCFM56-7BGeneral FamiliarizationGeneral Familiarization

CFM56-7B General Familiarization - 5 -Technical Training For training purposes only CFM56-7B General Familiarization

MTU Maintenance Hannover


1 Engine General 7 72-00-00

2 Fan Major Module 17 72-00-01 Fan and booster module 20 72-21-00 No.1 and No.2 bearing support module36 72-22-00 Inlet gearbox and No.3 bearing module50 72-61-00 Fan frame module 54 72-23-00

3 Core Engine Major Module 67 72-00-02High Pressure Compressor (HPC) 72-30-00 Compressor rotor assembly 72 72-31-00 Compressor front stator assembly 80 72-32-00 Compressor rear stator assembly 86 72-33-00Combustion section 72-40-00 Combustion case 92 72-41-00 Combustion chamber module 96 72-42-00High Pressure Turbine (HPT) 72-50-00 HPT nozzle module 102 72-51-00 HPT rotor module 106 72-52-00 HPT shroud and stage 1 LPT nozzle module 124 72-53-00

4 Low Pressure Turbine Major Module123 72-00-03 LPT rotor/stator module 126 72-54-00 LPT shaft module 138 72-55-00 LPT rear frame module 146 72-56-00

5 Accessory Drive Module 155 72-60-00 Transfer gearbox module 156 72-62-00 Accessory gearbox module 164 72-63-00

6 Appendix 167

123

4

65

7

89

101

1 12

14 1

5

13

16 1

7

For details about the module numbering system please refer to the “Modular Design Drawing”.Co

nte

nts

12/04




CopyrightThis publication is for training purposes only.

For authorized maintenance practices and specifications consult the appropriate maintenance publications.

These course notes were compiled using following document.




1Engine GeneralEngine General




CFM International organisation

Customer Service Areas:GE: SNECMA:Americas AfricaAustralia EuropeAsia Russia

India/PakistanMiddle East




Boeing NG series 737-600 737-600 737-600 737-700 737-800 737-800737-700 737-700 737-800 737-900 737-900

737-900 BBJ BBJC40A Combi

Length (in) 98.7 98.7 98.7 98.7 98.7 98.7Fan diameter (in) 61.0 61.0 61.0 61.0 61.0 61.0Basic dry weight (lb) 5,216 5,216 5,216 5,216 5,216 5,216

CFM56-7B18 -7B20 -7B22 -7B24 -7B26 -7B27Take-off conditions (sea level) In-flight performance (installed, 35 000 ft, Mach=0.80 - ISA) Engine characteristics Applications

Max. takeoff (lb) 19,500 20,600 22,700 24,200 26,300 27,300Airflow (lb/sec) 677 696 728 751 779 782Bypass ratio 5.5 5.5 5.3 5.3 5.1 5.1

CFM56-7B technical data www.cfm56.com

Max. climb thrust (lb) 5,962 5,962 5,962 5,962 5,962 5,962Overall pressure ratio at max. Climb 32.8 32.8 32.8 32.8 32.8 32.8Max. cruise thrust (lb) 5,420 5,450 5,450 5,480 5,480 5,480

V2527

26,8008054.8

27.4

12663.55,30

0

A320




CFM56-7B main characteristicsType of engine TurbofanArrangement Two spool axial flowRotation Clockwise (ALF)CompressorsFan Single stageLP Compressor Four stagesHP Compressor Nine stagesCombustion chamber Annular SAC

(option DAC)TurbinesHP Turbine Single stageLP Turbine Four stagesOverall dimensionsLength 2.51m (98.72 ins)Height 1.83m (72.00 ins)Width 2.12m (83.40 ins)

Performance

• Take-off thrust (SLS) *19500 - 27300 lbs

• Take-off flat rated *86/30Temperature °F/°C

• Max climb thrust *5962 Ibs

• By-pass ratio *5.1:1 to 5.5:1

• EGT red line 950°C

• 100% N1 (Low Pressure 5,175 rpm Rotational Speed)

• N1 speed limit (red line) 104%

• 100% N2 (High Pressure 14,460 rpmRotational Speed)

• N2 speed limit (red line) 105%

*figures depend on engine model




Engine general conceptFan frame

LPTrear frameN1

N2

#3 #4#1 #2#5




Main engine bearings

Fan MajorModule

Core EngineMajor Module

LPTMajor

Module




Aerodynamic stations

# Location Probe

12 Fan inlet secondary T1213 Fan OGV discharge Ps1315 Fan Frame discharge ---2 Fan inlet primary ---23 Booster discharge ---24 Booster VBV discharge---25 HPC inlet T25, P253 HPC discharge Ps3041 HPT inlet ---495 LPT stator - 2nd stage EGT5 LPT discharge T50




2Fan Major ModuleFan Major Module




4

Fan major module 72-00-01

12

3




Fan and booster module 72-21-001




Spinner front cone Spinner rear cone

Spinner front cone / Spinner rear cone 72-21-001

36 locations




Fan blade installation 72-21-001

(24)Retainer lug




Fan blade installation 72-21-001

Pin on the fan

retaining flange

Pin on thefan disk

Pin on the

booster spool




Fan disk 72-21-001




Booster rotor 72-21-001




Booster stator vane assembly 72-21-001




Booster stator vane assembly - borescope inspection 72-21-00

4:00




No.1 and No.2 bearing support module 72-22-002




No.1 bearing support / Forward stationary air-oil seal 72-22-00

2




External piping on the No.1 bearing support 72-22-002

3:30 / 8:30 /11:30

5:00

6:00




No.1 bearing 72-22-002




No.2 bearing support / No.2 bearing 72-22-002




Fan shaft / N1 speed sensor wheel 72-22-002




Oil manifold assembly / Air-oil separator 72-22-002

(2)3:00 & 9:00

(1)IGB

Condensationof oil

restrictor




Horizontal and radial bevel gear 72-61-003




No.3 bearing / Rotating air-oil seal 72-61-003

Boosterdischarge airOil drain

Rotating air/oil seal




Fan frame module 72-23-004




Containment case / Outlet Guide Vane (OGV) assembly 72-23-00

4




Fan frame assembly 72-23-004

9:00Radialdriveshaft

housing

* Sub-modules of “12-strut hub”

*

*

*




Fan frame shroud 72-23-004




12-strut hub 72-23-004

#1

#2

#3

#4

#5

#6#7

#8

#9

#10

#11#12

Thrust barsattachment




Radial drive shaft housing 72-23-004




3Core Engine Major Core Engine Major ModuleModule




Core engine major module 72-00-02

5

6 7 8

9 10

11

12




High Pressure Compressor (HPC) 72-30-00

5

6

7

5th stagebleed air

4th stagebleed air

9th stagebleed air




Compressor rotor assembly 72-31-005




Stage 1-2 spool / HPC rotor shaft / Stage 3 disk 72-31-00

Stage 1-2 spool HPC rotor shaft Stage 3 disk

5

Stage 4-9spool




Stage 4-9 spool / Rear rotating air seal 72-31-005




Blade retention 72-31-005

stiffener




Compressor front stator assembly 72-32-006

(St.5)Customer

bleed(St.4)HPT ACC

LPT cooling

(3)




VSV actuation system 72-32-006




Compressor rear stator assembly 72-33-007

5th stage air




HPC - borescope inspection 72-33-00

5:00




Combustion section 72-40-00




Combustion case 72-41-008

HPCStage 4/9

HPCStage 4

4:00 & 8:00

(4)




Combustion chamber module 72-42-009

For centeringof the outer liner




Outer and inner cowls / Outer and inner liners 72-42-009

1 or 3 (120° apart)

Dilution holes




Combustion chamber - borescope inspection 72-42-009




High Pressure Turbine (HPT) 72-50-00

10

11

12




HPT nozzle module 72-51-0010




HPT nozzle segments 72-51-0010




HPT rotor module 72-52-0011




HPT rotor design 72-52-0011

CDP

Boosterair

Boosterdischargebleed air




HPT blades 72-52-0011




HPT section/LPT stage 1 nozzle - borescope inspection 72-52-00

11




HPT shroud and stage 1 LPT nozzle 72-53-0012




Air impingement manifold / Shroud-nozzle support assembly72-53-00

Air impigment manifold Shroud/nozzle support assembly

12

1 2 3

HPTACC

HPTACC

HPTACC

LPT Cooling

5:00 & 8:00




HPT shroud hangers / HPT shrouds 72-53-00

HPT shroud hangers HPT shrouds

12




Stage 1 LPT nozzle segment / Inner and stationary air seals72-53-00

12

HPCstage 4

airHPC stage 4 air

HPTdisk

LPTrotor

Primaryairflow




4Low Pressure TurbineLow Pressure TurbineMajor ModuleMajor Module




Low Pressure Turbine major module 72-00-03

13

14

15




LPT rotor/stator module 72-54-00

LPT stator assemblyLPT rotor/stator module

13




LPT case / Air cooling tubes and manifolds assembly 72-54-00

LPT case Air cooling tubes and manifolds assembly

13

(8)

(3)

(6)

(6)




LPT stages 2 to 4 nozzles 72-54-0013




LPT disks and rotating rings72-54-0013




LPT stage 2 rotor assembly 72-54-0013

Hard coatingat 3 blades

Stage 1 & 2with aluminizedcoatingStages 1, 2 and 3 only




Turbine rotor support 72-54-0013

Rotor cooling air

Sump pressurization air

LPT shaft hub

LPT stage 2 & 3 disk




LPT shaft module 72-55-0014

Turbine rotorsupport




Center vent tube 72-55-0014

Center vent tube (CVT)

Rear vent tube

CVT




No.4 and No.5 bearings 72-55-0014

HPTrearshaft

LP shaft

No.5 bearingsupport

Emergencybearing

Oil dampingbetween outer race and adjusting sleeve




No.4 and No.5 bearings lubrication 72-55-0014

HPTrear shaft

LP shaft

No.5 bearingsupport

centrifugation

Emergencybearing




LPT rear frame module 72-56-0015

LPT caseflange

No.5 bearingsupport flange

Exhaustplug

flange

Exhaustnozzleflange




LPT rear frame hub - front side 72-56-0015




LPT rear frame hub - rear side 72-56-0015




LPT major module borescope ports 72-56-0015

5:30 / 8:30

5:00

5:00

5:00

#1#2

#3 #4




5Accessory Drive Accessory Drive ModuleModule




Accessory drive module 72-60-00

9:00




Radial drive shaft (RDS) 72-62-0016

StrutNo.10




Transfer gearbox (TGB) 72-62-0016




Horizontal Drive Shaft (HDS) 72-62-00

Horizontal drive shaft

16




Accessory gearbox housing 72-63-0017




6AppendixAppendix




Rear sump

No.5Bearing

Forwardair/oil seal

Air/oilseal

Air/oilseparator

Air/oilseal

Air/oilseal

Ventseal

VentsealVent

seal

No.4Bearing

Rearair/oil seal

“Safetyseal”

Documents

Cfm56-7b Familiarization Print