Cfm56-7b Familiarization Print

Title page

MTU Maintenance Hannover

CFM56-7B

General Familiarization © MTU Maintenance Hannover GmbH

Technical Training

For training purposes only

CFM56-7B CFM56-7B General General Familiarization Familiarization -1-


Conte nts

1 2

3

4

5 6

Engine General

7

72-00-00

Fan Major Module 17 1 Fan and booster module 20 2 No.1 and No.2 bearing support module36 3 Inlet gearbox and No.3 bearing module50 4 Fan frame module 54

72-00-01

Core Engine Major Module 67 High Pressure Compressor (HPC) 5 Compressor rotor assembly 72 6 Compressor front stator assembly 80 Compressor rear stator assembly 7 86 Combustion section 8 Combustion case 92 9 Combustion chamber module 96 High Pressure Turbine (HPT) 1 HPT nozzle module 102 0 1 HPT rotor module 106 1 1 HPT shroud and stage 1 LPT nozzle 2module

72-00-02

Low Pressure Turbine Major Module 123 1 LPT rotor/stator module 126 3 1 LPT shaft module 138 4 1 LPT rear frame module 146 5

72-00-03

Accessory Drive Module 1 Transfer gearbox module 61 Accessory gearbox module 7

155 156 164

72-60-00

Appendix

167

72-21-00 72-22-00 72-61-00 72-23-00

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

72-30-00 72-31-00 72-32-00 72-33-00 72-40-00 72-41-00 72-42-00 72-50-00 72-51-00 72-52-00 124 72-53-00 72-54-00 72-55-00 72-56-00 72-62-00 72-63-00

12/04

© MTU Maintenance Hannover GmbH

Technical Training




Copyright This 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.


Technical Training




1

Engine General


Technical Training




CFM International organisation

Customer GE: Americas Australia Asia

Service Areas: SNECMA: Africa Europe Russia India/Pakistan Middle East


Technical Training




CFM56-7B technical data CFM56-7B18

www.cfm56.com -7B20

-7B22

-7B24

-7B26

-7B27 V2527

19,500

20,600

22,700

24,200

26,300

27,300 26,800

677

696

728

751

779

782

805

5.5

5.5

5.3

5.3

5.1

5.1

4.8

Take-off conditions (sea level) Max. takeoff (lb) Airflow (lb/sec) Bypass ratio

In-flight performance (installed, 35 000 ft, Mach=0.80 - ISA) Max. climb thrust (lb)

5,962

5,962

5,962

5,962

5,962

5,962

Overall pressure ratio at max. Climb 32.8

32.8

32.8

32.8

32.8

32.8

5,420

5,450

5,450

5,480

5,480

5,480

Engine characteristics Length (in)

98.7

98.7

98.7

98.7

98.7

98.7

126

Fan diameter (in)

61.0

61.0

61.0

61.0

61.0

61.0

5,216

5,216

5,216

5,216

5,216

5,216

63.5 5,30 0

737-600

737-600 737-700

737-600 737-700

737-700 737-800 737-900 C40A

737-800 737-900 BBJ Combi

737-800 737-900 BBJ

Max. cruise thrust (lb)

Basic dry weight (lb) Applications Boeing NG series


Technical Training


CFM56-7B CFM56-7B General General Familiarization Familiarization - 10 -

27.4

A32 0


CFM56-7B main characteristics Type of engine

Turbofan

Performance

Arrangement

Two spool axial flow

• Take-off thrust (SLS)

*19500 - 27300 lbs

Rotation

Clockwise (ALF)

*86/30

Compressors Fan LP Compressor HP Compressor

• Take-off flat rated Temperature °F/°C

Single stage Four stages Nine stages

• Max climb thrust

*5962 Ibs

• By-pass ratio

*5.1:1 to 5.5:1

• EGT red line

950°C

Combustion chamber Annular SAC (option DAC) Turbines HP Turbine LP Turbine

Single stage Four stages

Overall dimensions Length Height Width

2.51m (98.72 ins) 1.83m (72.00 ins) 2.12m (83.40 ins)

• 100% N1 (Low Pressure 5,175 rpm Rotational Speed) • N1 speed limit (red line) 104% • 100% N2 (High Pressure 14,460 rpm Rotational Speed) • N2 speed limit (red line) 105% *figures depend on engine model


Technical Training




Engine general concept

Fan frame LPT rear frame

N1

N2 #1

#2

#3

#4 #5


Technical Training




Main engine bearings Core Engine Major Module

Fan Major Module

LPT Major Module


Technical Training




Aerodynamic stations

#

Location

Probe

12 13 15 2 23 24 25 3 41 495 5

Fan inlet secondary T12 Fan OGV discharge Ps13 Fan Frame discharge --Fan inlet primary --Booster discharge --Booster VBV discharge--HPC inlet T25, P25 HPC discharge Ps30 HPT inlet --LPT stator - 2nd stage EGT LPT discharge T50


Technical Training




2

Fan Major Module


Technical Training




Fan major module

72-00-01

4

1

3 2


Technical Training




1

Fan and booster module

72-21-00


Technical Training




1

Spinner front cone / Spinner rear cone

72-21-00

36 locations

Spinner front cone

Spinner rear cone


Technical Training




1

Fan blade installation

72-21-00

Retainer lug

(24)


Technical Training




1

Fan blade installation

72-21-00

Pin on the booster spool Pin on the fan retaining flange

Pin on the fan disk


Technical Training




1

Fan disk

72-21-00


Technical Training




1

Booster rotor

72-21-00


Technical Training




1

Booster stator vane assembly

72-21-00


Technical Training




Booster stator vane assembly - borescope inspection

72-21-

00

4:00


Technical Training




2

No.1 and No.2 bearing support module

72-22-00


Technical Training




2

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

72-22-

00


Technical Training




2

External piping on the No.1 bearing support

72-22-00

3:30 / 8:30 /11:30

5:00

6:00 © MTU Maintenance Hannover GmbH

Technical Training




2

No.1 bearing

72-22-00


Technical Training




2

No.2 bearing support / No.2 bearing

72-22-00


Technical Training




2

Fan shaft / N1 speed sensor wheel

72-22-00


Technical Training




2

Oil manifold assembly / Air-oil separator

72-22-00

(2) 3:00 & 9:00 IGB

(1)

Condensation of oil

restrictor © MTU Maintenance Hannover GmbH

Technical Training




3

Horizontal and radial bevel gear

72-61-00


Technical Training




3

No.3 bearing / Rotating air-oil seal

72-61-00

Rotating air/oil seal

Oil drain

Booster discharge air


Technical Training




4

Fan frame module

72-23-00


Technical Training




4

Containment case / Outlet Guide Vane (OGV) assembly

72-23-

00


Technical Training




4

Fan frame assembly

72-23-00

* * 9:00 Radial drive shaft housing

* * Sub-modules of “12-strut hub” © MTU Maintenance Hannover GmbH

Technical Training




4

Fan frame shroud

72-23-00


Technical Training




4

12-strut hub

72-23-00

#12 #1

#11

#10

#2

Thrust bars attachment #3

#9 #4 #8 #5 #7

#6


Technical Training




4

Radial drive shaft housing

72-23-00


Technical Training




3

Core Engine Major Module


Technical Training




Core engine major module

72-00-02 8

7

6

5

1 0

9

1 1

1 2


Technical Training




High Pressure Compressor (HPC)

72-30-00

6

9th stage bleed air 4th stage bleed air

5th stage bleed air

5 7


Technical Training




5

Compressor rotor assembly

72-31-00


Technical Training




5

Stage 1-2 spool / HPC rotor shaft / Stage 3 disk

72-31-00

Stage 4-9 spool

Stage 1-2 spool

HPC rotor shaft

Stage 3 disk


Technical Training




5

Stage 4-9 spool / Rear rotating air seal

72-31-00


Technical Training




5

Blade retention

72-31-00

stiffener


Technical Training




6

Compressor front stator assembly

72-32-00

(3)

(St.5) Customer (St.4) bleed HPT ACC LPT cooling


Technical Training




6

VSV actuation system

72-32-00


Technical Training




7

Compressor rear stator assembly

72-33-00

5th stage air


Technical Training




HPC - borescope inspection

72-33-00

5:00


Technical Training




Combustion section

72-40-00


Technical Training




8

Combustion case

72-41-00 HPC Stage 4/9

(4) HPC Stage 4

4:00 & 8:00 © MTU Maintenance Hannover GmbH

Technical Training




9

Combustion chamber module

72-42-00

For centering of the outer liner


Technical Training




9

Outer and inner cowls / Outer and inner liners

72-42-00

1 or 3 (120° apart)

Dilution holes © MTU Maintenance Hannover GmbH

Technical Training




9

Combustion chamber - borescope inspection

72-42-00


Technical Training




High Pressure Turbine (HPT)

72-50-00

12

10

11


Technical Training


CFM56-7B CFM56-7B GeneralGeneral Familiarization Familiarization - 101 -


1 0

HPT nozzle module

72-51-00


Technical Training




1 0

HPT nozzle segments

72-51-00


Technical Training




11

HPT rotor module

72-52-00


Technical Training




11

HPT rotor design

72-52-00

CDP

Booster discharge bleed air

Booster air


Technical Training




11

HPT blades

72-52-00


Technical Training




11

HPT section/LPT stage 1 nozzle - borescope inspection

72-52-

00


Technical Training




12

HPT shroud and stage 1 LPT nozzle

72-53-00


Technical Training




12

Air impingement manifold / Shroud-nozzle support assembly 72-53-00

HPTACC

LPT Cooling 5:00 & 8:00

1

2

3

HPTACC

Air impigment manifold HPTACC

Shroud/nozzle support assembly


Technical Training




12

HPT shroud hangers / HPT shrouds

72-53-00

HPT shroud hangers

HPT shrouds


Technical Training




12

Stage 1 LPT nozzle segment / Inner and stationary air seals 72-53-00

HPC stage 4 air

HPC stage 4 air

Primary airflow

HPT disk

LPT rotor


Technical Training




4

Low Pressure Turbine Major Module


Technical Training




Low Pressure Turbine major module

1 3

72-00-03

1 5

1 4


Technical Training




13

LPT rotor/stator module

72-54-00

LPT rotor/stator module

LPT stator assembly


Technical Training




13

LPT case / Air cooling tubes and manifolds assembly

72-54-

00

(6) (8)

(6)

(3) LPT case

Air cooling tubes and manifolds assembly


Technical Training




13

LPT stages 2 to 4 nozzles

72-54-00


Technical Training




13

LPT disks and rotating rings 72-54-00


Technical Training




13

LPT stage 2 rotor assembly

72-54-00 Hard coating at 3 blades

Stages 1, 2 and 3 only

Stage 1 & 2 with aluminized coating


Technical Training




13

Turbine rotor support

72-54-00

LPT stage 2 & 3 disk

LPT shaft hub

Rotor cooling air

Sump pressurization ai


Technical Training




14

LPT shaft module

72-55-00 Turbine rotor support


Technical Training




14

Center vent tube

nt Ce

72-55-00

v er

b tu t en

e

) VT C (

e ub t t en v ar Re

CVT


Technical Training




14

No.4 and No.5 bearingsOil damping 72-55-00 between outer race and adjusting sleeve

HPT rear shaft

No.5 bearing support

LP shaft Emergency bearing


Technical Training




14

No.4 and No.5 bearings lubrication

72-55-00

centrifugation

Emergency bearing

LP shaft

HPT rear shaft No.5 bearing support


Technical Training




15

LPT rear frame module

72-56-00

Exhaust nozzle flange

No.5 bearing support flange Exhaust plug flange

LPT case flange


Technical Training




15

LPT rear frame hub - front side

72-56-00


Technical Training




15

LPT rear frame hub - rear side

72-56-00


Technical Training




15

LPT major module borescope ports

72-56-00

#1 #2 #3

#4

5:30 / 8:30

5:00 5:00 5:00 © MTU Maintenance Hannover GmbH

Technical Training




5

Accessory Drive Module © MTU Maintenance Hannover GmbH

Technical Training




Accessory drive module

72-60-00

9:00


Technical Training




16

Radial drive shaft (RDS)

72-62-00

Strut No.10


Technical Training




16

Transfer gearbox (TGB)

72-62-00


Technical Training




16

Horizontal Drive Shaft (HDS)

72-62-00

Horizontal drive shaft © MTU Maintenance Hannover GmbH

Technical Training




17

Accessory gearbox housing

72-63-00


Technical Training




6 Appendix


Technical Training




Rear sump

Vent seal

Air/oil seal

“Safety seal” Air/oil seal

Vent seal

Vent seal

Forward air/oil seal

No.4 Bearing

No.5 Bearing

Air/oil separator

Rear air/oil seal


Technical Training



Cfm56-7b Familiarization Print

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