TRANSMITTAL SHEET

CFM INTERNATIONAL

CFM56-7B SERVICE BULLETIN 72-0564, REVISION 3

ENGINE - GENERAL (72-00-00) - INTRODUCTION OF A NEW ACCESSORY GEARBOX ASSEMBLY

(AGB) WITH A NEW STARTER DRIVE PAD AND REWORK OF THE OLD AGB TO THE NEW ONE

MAY 25, 2011

This page transmits Revision 3 to CFM56-7B Service Bulletin 72-0564 dated October 13, 2009, Revision 1

dated June 28, 2010 and Revision 2 dated November 16, 2010.

The revision 1 of this Service Bulletin has never been issued. This revision incorporates all the information

that was to be in the revision 1.

This revision has been revised to update the correct the Spare Code for bracket P/N 340-091-109-0 and

correct one tool number. Consequently, the following paragraph has been updated:

- 2.C. Conguration Chart to update and add new Operation Codes.

- 2.E. Tooling - Price and Availability to correct 856A2969 tool number.

- 3. ACCOMPLISHMENT INSTRUCTIONS to correct 856A2969 tool number and clarify the jet ow criteria

which was 2.89 US gal/h (70% of the ow rate) and becomes 70% of the ow rate.

The vertical dash in the left margin identies changes. Change, which does not affect technical content

may not be highlighted in the Transmittal Sheet.

This Service Bulletin is reissued in entirety.

ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

CFM PROPRIETARY INFORMATION

The information contained in this document is CFM proprietary information and is disclosed in

condence.It is the property of CFM and shall not be used,disclosed to others or reproduced

without the express written consent of CFM, including, but without limitation, it is not to be used in

the creation, manufacture, development, or derivation of any repairs, modications, spare parts,

design,or conguration changes or to obtain FAA or any other government or regulatory approval

to do so. If consent is given for reproduction in whole or in part,this notice and the notice set forth

on each page of this document shall appear in any such reproduction in whole or in part. The

information contained in this document may also be controlled by U.S. export control laws.

Unauthorized export or re-export is prohibited.

All technical documentation and information contained herein, with respect to assembly and

disassembly, cleaning, inspection methods and limits, repair methods and limits, operational

limits, life limits and the like, have been developed and approved for use with engines and parts

that have been manufactured and/or approved by CFM and that have been maintained in

accordance with CFM technical documentation and recommendations. CFM has no contractual

or legal obligation for, nor knowledge of, non-CFM-approved parts and repairs. Accordingly, this

document is not intended to apply to non-CFM-approved parts and repairs.

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 1 of 52
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

1. PLANNING INFORMATION

A. Effectivity

CFM56-7B20, -7B22, -7B24, -7B26, -7B27

CFM56-7B22/B1, -7B24/B1, -7B26/B1, -7B27/B1, -7B27/B3

CFM56-7B26/B2

CFM56-7B20/3, -7B22/3, -7B24/3, -7B26/3, -7B27/3

CFM56-7B22/3B1, -7B24/3B1, -7B26/3B1, -7B27/3B1, -7B27/3B3

CFM56-7B26/3B2

CFM56-7B26/3F, -7B27/3F

CFM56-7B26/3B2F, -7B27/3B1F

CFM56-7B20/2, -7B22/2, -7B24/2, -7B26/2, -7B27/2

(1) The old Accessory Gearbox assembly (AGB) 340-046-505-0 and its old components

(Refer to paragraph 2.C. CONFIGURATION CHART) installed on CFM56-7B engines

or stocked as spares are affected.

(2) The new Accessory Gearbox assembly 340-046-508-0 and its new components

(Refer to paragraph 2.C. CONFIGURATION CHART) will be introduced in production

on the engine serial numbers listed below:

For CFM56-7B/3 :

This information will be provided through a revision of this Service Bulletin.

For CFM56-7B and CFM56-7B/2 :

There is no CFM56-7B or CFM56-7B/2 engine model in the production line anymore.

B. Description

This Service Bulletin announces the production introduction and spare parts availability of

the following:

- A new Accessory Gearbox assembly 340-046-508-0 equipped with a new handcranking

line oil seal assy 340-155-304-0, a new handcranking cover assy 340-047-605-0, a new

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 2
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

starter drive pad assy 340-047-804-0 and a new spool 335-310-200-0. Refer to gure

1, gure 2 and gure 3.

NOTE 1: For AGB 340-046-508-0, you must apply a bead of silicone elastomer sealant

RTV102 or RTV103 when you install the housing of the new oil seal assy

340-155-304-0 in its location on the AGB housing to insure its sealing.

- A new bracket assy 340-091-111-0 in accordance with the new conguration of the starter

drive pad assy 340-047-804-0.

- For the details of new starter drive pad assy 340-047-804-0, refer to paragraph 2.C.

CONFIGURATION CHART and gure 4.

- A new drain line 340-200-002-0 with its brackets 340-206-001-0, 340-199-801-0,

340-199-901-0 and its attaching parts to collect the leakage of the new oil seal and to drain

the handcranking sump. Refer to gure 1, gure 2 and gure 9.

This Service Bulletin provides also the accomplishment instructions to rework and reidentify

the old AGB 340-046-505-0 to the new AGB 340-046-508-0.

NOTE 2: During the rework of the old AGB 340-046-505-0 to the new AGB

340-046-508-0, you do not have to install washers 649-341-031-0 in the new

brackets 340-206-001-0, 340-199-801-0 and 340-199-901-0 locations.

C. Compliance

Category 3

Do at next engine shop visit opportunity.

NOTE: This Service Bulletin can be accomplished in shop.

D. Concurrent Requirements

None.

E. Reason

(1) Objective:

INTRODUCTION OF NEW PARTS.

To improve the reliability.

(2) Condition:

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 3
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Some cases of engine oil loss have been reported and resulted in IFSD (In Flight

Shut Down).

(3) Cause:

Ground investigations showed that the AGB handcranking cover assy was not

installed or incorrectly installed.

(4) Improvement:

Modication of the AGB by the introduction of a new oil seal assy on the new starter

drive pad assy and a new handcranking cover assy to prevent oil leakage from

handcranking pad.

This modication is associated to the installation of a new drain line to collect possible

oil leakage of the oil seal assy and to drain the handcranking pad sump.

Sealing of the new oil seal assy by the application of a bead of silicone elastomer

sealant RTV102 or RTV103 on the mating surface between seal housing and AGB

housing.

(5) Substantiation:

Substantiation is by testing and comparative analysis.

F. Approval

The technical content of this document is approved by the FAA and under the authority of

DOA n°EASA.21J.086.

G. Manpower

You will need approximately 4 man-hours to replace the old starter drive pad assy by the

new one on the AGB and to install the new brackets and the new drain line on the engine.

H. Weight and Balance

Accomplishment of this Service Bulletin will result in a weight increase of 1.467 lb (0,666 kg).

I. References

CFM56-7B Illustrated Parts Catalog, CFMI-TP.PC.14

CFM56-7B Engine Shop Manual, CFMI-TP.SM.10

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 4
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

CFM56 Standard Practices Manual, CFMI-TP.SP.2

CFM56 Consumable Products Manual, CFMI-TP.CP.3

CFM56 Illustrated Tool and Equipment Manual, CFMI-TP.TE.10

BOEING 737-600/700/800/900 Aircraft Maintenance Manual

NOTE: The reference documents listed below are for the engine manufacturer's internal

use only:

AAS: 27608 CAD: MOD063338

AAS: 27741 CAD: MOD107115

J. Publications Affected

CFM56-7B Illustrated Parts Catalog, CFMI-TP.PC.14, ATA 72-63-00

CFM56-7B Engine Shop Manual, CFMI-TP.SM.10, ATA 72-63-00

CFM56 Illustrated Tool and Equipment Manual, CFMI-TP.TE.10

BOEING 737-600/700/800/900 Aircraft Maintenance Manual

K. Interchangeability

The physical interchangeability of the AGB assembly is affected by the introduction of a

new starter drive pad assy with a new oil seal assy, a new drain line and new brackets

assemblies. The functional interchangeability of the AGB assembly is not affected.

The new starter drive pad assy with a new oil seal assy is interchangeable only as a set

with the old starter drive pad assy.

The new handcranking cover assy is not interchangeable with the old one.

The old and new parts can not be mixed.

L. Software Accomplishment Summary

None.

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 5
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

2. MATERIAL INFORMATION

A. Material - Price and Availability

(1) Parts necessary to do this Service Bulletin:

Part Number

Qty/

Eng Part Name

Unit

$ Price

Pkg

Qty

Lead

Time

Days

333-089-182-000 (1) Logistic Kit 12,205.25 (1) Quote

. 335-310-200-0 (1) Spool 118.25 (1) 7

. 340-047-804-0 (1) Pad Assy- Starter

Drive

7914.00 (1) 10

. 340-047-605-0 (1) Cover AssyHandcranking1199.00 (1) 7

. 340-155-304-0 (1) Seal Assy - Oil 2,974.00 (1) 30

649-393-163-0 (1) Preformed Packing

O-Ring

16.75 (10) 30

J221P163 (Alt) Preformed Packing

O-Ring

14.00 (10) 7

649-393-158-0 (1) Preformed Packing

O-Ring

12.25 (25) 30

J221P158 (Alt) Preformed Packing

O-Ring

7.00 (25) 5

649-393-154-0 (1) Preformed Packing

O-Ring

10.75 (25) 30

J221P154 (Alt) Preformed Packing

O-Ring

6.95 (25) 5

649-393-034-0 (1) Preformed Packing

O-Ring

2.45 (50) 30

J221P034 (Alt) Preformed Packing

O-Ring

1.85 (50) 5

649-393-137-0 (1) Preformed Packing

O-Ring

2.65 (50) 30

J221P137 (Alt) Preformed Packing

O-Ring

- (-) -

333-089-183-000 (1) Logistic Kit 2,198.15 (1) Quote

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 6
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Part Number

Qty/

Eng Part Name

Unit

$ Price

Pkg

Qty

Lead

Time

Days

. AS3237-12 (3) Bolt-Mach Dbl Hex Hd 5.50 (50) 30

. AS3236-08 (2) Bolt-Mach Dbl Hex Hd 13.00 (-) 7

. 340-200-002-0 (1) Drain- Tube Assy 1071.00 (1) 30

. 340-091-111-0 (1) Bracket Assy 409.75 (1) 30

. 340-199-801-0 (1) Bracket Assy 197.60 (1) 30

. 340-199-901-0 (1) Bracket Assy 165.95 (1) 30

. 340-206-001-0 (1) Bracket Assy 159.15 (1) 30

. AS3236-12 (4) Bolt-Mach Dbl Hex Hd 4.70 (100) 30

. AS3237-08 (4) Bolt-Mach Dbl Hex Hd 4.60 (10) 30

. AS3486-10 (4) Nut 28.75 (1) 30

J1431P06 (4) Clamp 15.75 (40) 30

649-393-013-0 (2) Preformed Packing

O-Ring

0.65 (100) 30

J221P013 (Alt) Preformed Packing

O-Ring

0.57 (25) 10

NOTE 1: These kits 333-089-182-000 and 333-089-183-000 are added only to

facilitate the spare parts ordering process, but each part can be also

purchased separately.

NOTE 2: Prices can change.

(2) Other Spare Parts:

Part Number

Qty/

Eng Part Name

Unit

$ Price

Pkg

Qty

Lead

Time

Days

340-046-508-0 (1) Gearbox Assy -

Accessory

Quote (-) Quote

NOTE: Prices can change.

(3) Consumables:

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 7
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Code Number Description

CP1039 Acetone

CP2101 Graphite Compound

CP2266 RTV102

Or RTV103

CP2442 Engine Oil

CP5069 Calibration Fluid

CP5070 Vaseline

B. Industry Support Information

Parts : CFM will provide a 50% back-end discount on the 2 logistic kits P/N 333-089-182-000

and 333-089-183-000. Refer to paragraph 2.A. Material – Price and Availability.

Labor : CFM will support the 4 manhours necessary to rework the old AGB P/N to the

new one.

All warranty claims for credit request on the 2 logistic kits and the labor must be submitted

within one year of compliance and by December 31, 2016. Send a Warranty Claim with the

number of this SB to CFM through your routine channel or to:

Europe, Middle East, and Africa Region

Customers

CFM SA Customers

CFM Customer Support Operation

Attn: Warranty and Guarantee Manager

c/o Snecma – Site de Melun - Montereau

Aerodrome de Villaroche – BP 1936

77019 Melun Cedex - France

Tel: 33 (0) 1 64.14.85.72

Fax: 33 (0) 1 64.14.87.65

North and South America and Asia

Customers

CFM Inc. Customers

CFM International Inc

Attn: Manager Warranty Administration

One Neumann Way – Room 444

Cincinnati, OH 45215-1988 USA

Tel: 1 513 552 2000

Fax: 1 513 552 5081

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 8
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

C. Conguration Chart

New Part Number

Qty/

Eng Part Name

Old

Part Number/

IPC Location

Qty/

Eng OP

Chg/

Sprt

Code

9324M60G01-G02-G03-

G04-G05-G06-G07-G08-

G09

(X) Engine Assy 9324M60G01-G02-G03-

G04-G05-G06-G07-G08-

G09

72-00-00-45-001

(X) RM -/-

1887M40G01-G02-G03-

G04-G05-G06-G07

(X) Engine Assy 1887M40G01-G02-G03-

G04-G05-G06-G07

72-00-00-45-002

(X) RM -/-

9324M60G10 (X) Engine Assy 9324M60G10

72-00-00-45-003

(X) RM -/-

9324M60G11 (X) Engine Assy 9324M60G11

72-00-00-45-004

(X) RM -/-

. 340-046-508-0 (1) Gearbox Assy -

Accessory

.340-046-505-0

72-00-00-45-710

72-63-00-05-001

72-63-00-20-001

(1) SU/

RW/

RI

1/A

.. 340-047-804-0 (1) Pad Assy - Drive

Starter

..340-047-802-0

72-63-00-05-320

see Note 4

(1) SU 5/A

... 340-047-904-0 (1) Pad - Drive Starter ...340-047-902-0

72-63-00-05-380

(1) SU 5/A

... J970P03 (4) Insert - Key Locked ...J970P03

72-63-00-05-370

(2) AD 5/E

- (-) Insert - Key Locked ...649-680-055-0 (Alt) DE 5/E

... J970P04 (8) Insert - Key Locked ...J970P04

72-63-00-05-330

(9) DE 5/E

- (-) Insert - Key Locked ...649-680-056-0 (Alt) DE 5/E

... 649-550-005-0 (1) Nozzle - Oil - (-) AD 5/-

... 340-152-101-0

see Note 4

(1) Plug - (-) AD 5/-

... J1037P06 (1) Nipple - (-) AD 5/-

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 9
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

New Part Number

Qty/

Eng Part Name

Old

Part Number/

IPC Location

Qty/

Eng OP

Chg/

Sprt

Code

... 649-393-012-0 (1) Packing-Preformed

O-Ring

- (-) AD 5/-

... J221P012 (Alt) Packing-Preformed

O-Ring

- (-) AD 5/-

... 340-155-801-0 (1) Pin-Centering - (-) AD 5/-

- (-) Packing-Preformed

O-Ring

..AS3085-134

72-63-00-05-190

(2) DE 5/-

- (-) Packing-Preformed

O-Ring

..M83248-1-134

72-63-00-05-190

(ALT) DE 5/-

.. 649-393-137-0 (1) Packing-Preformed

O-Ring

- (-) AD 5/-

.. J221P137 (Alt) Packing-Preformed

O-Ring

- (-) AD 5/-

.. 649-341-031-0 (3) Washer-Plain ..649-341-031-0

72-63-00-05-180

(4) DE 5/-

.. AS3237-12 (3) Bolt-Mach Dbl Hex Hd ..AS3237-12

72-63-00-05-170

(4) DE 5/-

.. 340-047-605-0 (1) Cover-Assy ..340-047-602-0

72-63-00-05-200

(1) SU 5/A

... 340-047-704-0

see Note 4

(1) Cover ...340-047-702-0

72-63-00-05-210

(1) SU 5/A

... 335-322-902-0

see Note 4

(1) Cable ...335-322-901-0

72-63-00-05-220

(1) SU 5/A

.. 340-155-304-0 (1) Oil Seal - Assy - (-) AD 5/-

... 340-196-401-0 (1) Packing-Preformed

O-Ring

- (-) AD 5/-

... 340-155-404-0 (1) Oil Seal - Subassy

Matched Parts

- (-) AD 5/-

.... 340-155-601-0 (1) Ring - Mating - (-) AD 5/-

.... 340-155-504-0 (1) Oil Seal - (-) AD 5/-

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 10
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

New Part Number

Qty/

Eng Part Name

Old

Part Number/

IPC Location

Qty/

Eng OP

Chg/

Sprt

Code

.. 649-393-034-0 (1) Packing-Preformed

O-Ring

- (-) AD 5/-

.. J221P034 (Alt) Packing-Preformed

O-Ring

- (-) AD 5/-

.. AS3236-08 (2) Bolt-Mach Dbl Hex

head

- (-) AD 5/-

.. 335-310-200-0 (1) Plug

(Old Name)

Spool

(New Name)

..340-052-901-0

72-63-00-20-250

(1) SU 5/E

- (-) Packing-Preformed

O-Ring

..J221P114

72-63-00-20-230

(1) DE 5/-

- (-) Packing-Preformed

O-Ring

..649-393-114-0 (Alt) DE 5/-

.. J221P013 (2) Packing-Preformed

O-Ring

..J221P013

72-63-00-20-240

(1) AD 5/-

.. 649-393-013-0 (Alt) Packing-Preformed

O-Ring

..649-393-013-0 (Alt) AD 5/-

. 340-091-111-0 (1) Bracket- Assy .340-091-109-0

72-00-00-41-120

(1) SU 5/D

. 340-200-002-0 (1) Drain- Tube Assy - (-) AD 5/-

. 340-206-001-0 (1) Bracket - (-) AD 5/-

. 340-199-801-0 (1) Bracket - (-) AD 5/-

. 340-199-901-0 (1) Bracket-Assy - (-) AD 5/-

. AS3236-12 (4) Bolt - Mach Dbl Hex

head

.AS3236-10

72-00-00-26-470

(4) SU 5/E

. AS3237-08 (4) Bolt - Mach Dbl Hex

head

- (-) AD 5/-

. AS3486-10 (4) Nut - (-) AD 5/-

. J1431P06 (4) Clamp - (-) AD 5/-

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 11
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

New Part Number

Qty/

Eng Part Name

Old

Part Number/

IPC Location

Qty/

Eng OP

Chg/

Sprt

Code

.. 649-341-031-0 (6) Washer-Plain ..649-341-031-0

72-63-00-05-271

(9) DE 5/-

.. 649-341-031-0 (2) Washer-Plain ..649-341-031-0

72-63-00-15-700

(4) DE 5/-

NOTE 1: Specication 2000 Change Codes

- = Not applicable.

1 = One way interchangeable.

5 = Qualied interchangeability - parts deleted.

5 = Qualied interchangeability - parts added.

5 = Qualied interchangeability - Refer to paragraph 1.K Interchangeability .

NOTE 2: Spare Parts Support Codes

- = Not applicable.

A = Old parts will no longer be supplied.

D= Old parts will be supplied for engines that have not been changed by the

Service Bulletin.

E = Old parts will be supplied, and can be used at other engine locations.

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 12
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

NOTE 3: Operation Codes

AD = Added

DE = Deleted

RI = Reidentied

RM = Remains

RW = Reworked

SU = Superseded

NOTE 4: This part is not procurable.

D. Disposition of Parts

Part Numbers 340-047-602-0, 340-047-802-0 and 340-052-901-0, removed to accomplish

this Service Bulletin may be locally scrapped.

E. Tooling - Price and Availability

Tool Number Description

856A3545G03 Rigging Fixture

856A1130P12 Jackscrews

856A2961G02 Removal / Installation , Sealol and Magnetic Seals

856A3548G03 Tool Set , Targets - AGB Oil Nozzle Air Impingement Checks

856A3549G02 Tool Set , Leak Test - AGB

856A2969G01 Tool Set , Target - AGB Oil Nozzle (Line N°4) Air I mpingement

Check

3. ACCOMPLISHMENT INSTRUCTIONS

NOTE 1: Changes introduced by this Service Bulletin have no effect on the removal/installation

and disassembly/assembly of AGB assembly except for the installation of the new

drain line.

NOTE 2: Changes introduced by this Service Bulletin have no effect on the removal/installation

and disassembly/assembly of starter drive pad assembly except for the installation

of the new oil seal assy.

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 13
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

NOTE 3: For the new AGB assembly 340-046-508-0 installation, unless specied differently

in the installation procedures of the new brackets, to attach the new brackets

340-199-801-0, 340-206-001-0, 340-199-901-0 and 340-091-111-0, you must use the

bolts removed from the new AGB assembly 340-046-508-0 but you must not install

the temporary washers (painted red).

NOTE 4: For the reworked AGB assembly 340-046-508-0 installation, to attach the new

brackets 340-199-801-0, 340-206-001-0, 340-199-901-0 and 340-091-111-0, you

must use the bolts removed from the reworked AGB assembly 340-046-508-0 but

you must discard the associated washers at these brackets locations.

A. Removal of the old AGB assembly 340-046-505-0 equipped with its old starter drive pad

assembly 340-047-802-0, handcranking cover assembly 340-047-602-0 and bracket

assembly 340-091-109-0 from the engine assembly. Refer to Engine Shop Manual (ESM),

ATA 72-00-63, Removal 001. Refer to gure 1.

B. Removal of the old handcranking cover assembly 340-047-602-0 and starter drive pad

assembly 340-047-802-0 from the old AGB assembly 340-046-505-0. Refer to Engine Shop

Manual (ESM), ATA 72-63-00, Disassembly 001. Refer to gure 2, gure 3 and gure 4.

NOTE: This step concerns the rework of old AGB assembly 340-046-505-0 to the new

AGB assembly 340-046-508-0.

(1) Remove the old handcranking cover assembly 340-047-602-0 from the old AGB

assembly 340-046-505-0 as follows :

(a) Remove the bolt AS3237-14 which attach the cable 335-322-901-0 of the

old handcranking cover assembly 340-047-602-0 on the old starter drive pad

assembly 340-047-802-0.

(b) Remove the old bolts AS3237-12 and washers 649-341-031-0 which attach

the old handcranking cover assembly 340-047-602-0.

(c) Remove and discard the old handcranking cover assembly 340-047-602-0.

(d) Remove and discard the two O-rings AS3085-134 or M83248-1-134 from old

handcranking cover assembly.

(2) Remove the old starter drive pad assembly 340-047-802-0 with the handcranking 62

tooth gearshaft assembly 340-051-901-0 from the old AGB assembly 340-046-505-0

as follows :

(a) Remove the bolts AS3237-14 and washers 649-341-031-0 which attach the

old starter drive pad assembly 340-047-802-0 to AGB housing.

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 14
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(b) Remove the old starter drive pad assembly 340-047-802-0 with the

handcranking 62 tooth gearshaft assembly 340-051-901-0, use the P12 of

jackscrews, 856A1130.

(c) Install a protective rubber cover on the inner race of the roller bearing

301-480-724-0 or 301-480-726-0 or 301-480-723-0 or 340-055-801-0 of the 62

tooth gearshaft assembly 340-051-901-0.

(3) Remove the handcranking 62 tooth gearshaft assembly 340-051-901-0 from the old

starter drive pad assembly 340-047-802-0 as follows :

(a) Remove the nuts J626P04 which attach the 62 tooth gearshaft assembly

340-051-901-0 with its oil collector 335-309-900-0 from the starter drive pad

assembly 340-047-802-0.

(b) Lightly heat the bearing housing on the starter drive pad assembly

340-047-802-0 with a heat gun. Do not increase the temperature of housing

over 300°F (150°C).

(c) Remove the 62 tooth gearshaft assembly 340-051-901-0 with its ball bearing

335-304-401-0 or 335-304-402-0 or 335-304-403-0 or 340-052-602-0 from the

old starter drive pad assembly 340-047-802-0. Keep the 62 tooth gearshaft

assembly for reinstallation.

(d) Remove and discard the old starter drive pad assembly 340-047-802-0 and

the O-rings J221P163 or 649-393-163-0, J221P158 or 649-393-158-0 and

J221P154 or 649-393-154-0.

(4) Remove the old plug 340-052-901-0 from the old AGB assembly 340-046-505-0 as

follows :

(a) Remove and discard the old plug 340-052-901-0 with its O-rings J221P114

or 649-393-114-0 and J221P013 or 649-393-013-0 from its place on the AGB

housing.

C. Impingement Test of the Oil Nozzle 649-550-005-0 of the new starter drive pad assembly

340-047-804-0. Refer to gure 1, gure 4 and gure 5.

NOTE: This step concerns the rework of old AGB assembly 340-046-505-0 to the new

AGB assembly 340-046-508-0.

(1) Install the target P01of the Target - AGB oil nozzle air impingement check, tool

(Line N°4), 856A2969G01 as follows:

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 15
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(a) Install the master index P02 in its location on the target P01 of the Target -

AGB oil nozzle air impingement check , tool (Line N°4), 856A2 969G01.

(b) Install the target P01 of the Target - AGB oil nozzle air impingement check,

tool (Line N°4), 856A2969G01 in its location on the rear face of the new starter

drive pad assembly 340-047-804-0. Align the holes of the target P01 with the

studs 649-079-402-0.

(c) Attach the target P01 of the Target - AGB oil nozzle air impingement check,

tool (Line N°4), 856A2969G01 to the rear face of the new start er drive pad

assembly 340-047-804-0 with the knurled nut P03.

(d) Tighten with hand the knurled nut P03.

(2) Install the new starter drive pad assembly 340-047-804-0 on the support plate P10

of Target - AGB oil nozzle air impingement check, tool (Line N°4), 856A2969G01

as follows:

(a) Install the centering pin P14 in its location on the support plate P10 of Target -

AGB oil nozzle air impingement check, tool (Line N°4), 856A2 969G01.

(b) Install the support plate P10 of the Target - AGB oil nozzle air impingement

check, tool (Line N°4), 856A2969G01 on the adaptation suppo rt of rigging

xture, 856A3545G03.

(c) Attach the support plate P10 to the adaptation support with the two bolts of

rigging xture, 856A3545G03. Tighten with hand the two bolts.

(d) Install the new starter drive pad assembly 340-047-804-0 on the support plate

P10 of the Target - AGB oil nozzle air impingement check, tool (Line N°4),

856A2969G01. Align the hole of the starter drive pad with the centering pin

P14.

(e) Install the two threaded rods P13 with xing guides and nuts P15 on their

locations on the support plate P10 of Target - AGB oil nozzle air impingement

check, tool (Line N°4), 856A2969G01.

(f) Attach the new starter drive pad assembly 340-047-804-0 to the threaded

rod P13 installed on the support plate P10 of the Target - AGB oil nozzle air

impingement check, tool (Line N°4), 856A2969G01 with xing guides and the

nuts P15. Tighten with hand the nuts P15.

(g) Make sure that the starter drive pad assembly 340-047-804-0 is correctly

installed and tightened on the rigging xture, 856A3545G03. Refer to gure 5.

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 16
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(3) Install the connecting tube P09 of the Target - AGB oil nozzle air impingement check,

tool (Line N°4), 856A2969G01 as follows:

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(a) Lightly coat two new O-rings 649-393-013-0 or J221P013 with engine oil

(CP2442) .

(b) Install the O-rings 649-393-013-0 or J221P013 in the grooves of the joint base

P04 (pad side) and joint base P05 (housing side) of the Target - AGB oil nozzle

air impingement check, tool (Line N°4), 856A2969G01.

(c) Put the joint base P04 in position at the rear face of the new starter drive pad

assembly 340-047-804-0.

(d) Install the two xing guides, threaded rods P13 and nuts P15 of the Target -

AGB oil nozzle air impingement check, tool (Line N°4), 856A2 969G01 from the

front face of the new starter drive pad assembly 340-047-804-0.

(e) Attach the joint base P04 to the new starter drive pad assembly 340-047-804-0

with the two xing guides, threaded rods P13 and nuts P15 of the Target - AGB

oil nozzle air impingement check, tool (Line N°4), 856A2969 G01.

(f) Tighten with hand the nuts P15.

(g) Put the joint base P05 in position at the spool 335-310-200-0 location of the

AGB housing.

(h) Attach the joint base P05 to the AGB housing with the two threaded bolts of the

Target - AGB oil nozzle air impingement check, tool (Line N°4 ), 856A2969G01.

(i) Tighten with hand the two threaded bolts.

(j) Install the connecting tube P09 (exible) with its threaded adaptors P12 and

BS rings P11 between the two joint bases P04 and P05 of the Target - AGB oil

nozzle air impingement check, tool (Line N°4), 856A2969G01 .

(k) Make sure that connecting tube P09 is correctly installed. Refer to gure 5

sheet 2.

(l) Tighten with hand the two coupling nuts of connecting tube P09 of the Target -

AGB oil nozzle air impingement check, tool (Line N°4), 856A2 969G01.

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 17
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(4) Installation of the test installation Tool set, Targets - AGB oil nozzle air impingement

checks (tool set), 856A3548G02 as follows :

(a) Connect the test installation through connecting tting of Tool set, Targets

- AGB oil nozzle air impingement checks (tool set), 856A3548G02 to the

restrictor nipple 340-054-301-0.

(b) Set the test conditions as follows:

WARNING: CALIBRATION FLUID IS TOXIC AND FLAMMABLE.

USE PERSONAL PROTECTION EQUIPMENT. USE IN A

WELL-VENTILATED AREA.

1 Calibration uid: calibration uid (CP5069) .

2 Temperature: 80.6 to 89.6 deg F (27 to 32 deg C).

3 Supply pressure: 2.9 to 3.1 bar.

4 Total AGB ow rate: 115 to 141 US gal/h (436,5 to 533,5 l/h) as monitored

on the owmeter during the test.

(c) After the stability of parameters, supply the pressure to the oil nozzle and

verify the following :

1 The direction of oil jet is correct. 70% of the jet ow rate must pass

through the target.

2 The quality of oil jet is correct. You must have a homogenous jet and

not have a spray pattern.

NOTE: A light spray of oil around the target hole is acceptable. The jet

section can have an incompletely circular shape.

(d) After you complete the test, let the pressure decrease gradually.

(e) If the test result is not correct, replace the new starter drive pad assembly

340-047-804-0 and do the test again.

(f) Disconnect the connecting tting of Tool set, Targets - AGB oil nozzle air

impingement checks (tool set), 856A3548G02 from therestrictor nipple

340-054-301-0.

(5) Remove the connecting tube P09 of the Target - AGB oil nozzle air impingement

check, tool (Line N°4), 856A2969G01 as follows:

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 18
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(a) Loosen the two coupling nuts of connecting tube P09 of the Target - AGB oil

nozzle air impingement check, tool (Line N°4), 856A2969G01 .

(b) Remove the connecting tube P09 (exible) and its threaded adaptors P12 and

BS rings P11 from the two joint bases P04 and P05 of the Target - AGB oil

nozzle air impingement check, tool (Line N°4), 856A2969G01 .

(c) Loosen the two threaded bolts of the Target - AGB oil nozzle air impingement

check, tool (Line N°4), 856A2969G01 which attach the joint b ase P05 to the

AGB housing .

(d) Remove the joint base P05 from the AGB housing.

(e) Loosen and remove the two nuts P15, threaded rods P13 and xing guides

of the Target - AGB oil nozzle air impingement check, tool (Line N°4),

856A2969G01 which attach the joint base P04 to the new starter drive pad

assembly 340-047-804-0.

(f) Remove the joint base P04 from the rear face of the new starter drive pad

assembly 340-047-804-0.

(g) Remove and discard the O-rings 649-393-013-0 or J221P013 from the grooves

of the joint base P04 and joint base P05 of the Target - AGB oil nozzle air

impingement check, tool (Line N°4), 856A2969G01.

(6) Remove the new starter drive pad assembly 340-047-804-0 from the support plate

P10 of Target - AGB oil nozzle air impingement check, tool (Line N°4), 856A2969G01

as follows:

(a) Loosen and remove the threaded rod P13 with the nut P15 and the xing

guide which attach the new starter drive pad assembly 340-047-804-0 on the

support plate P10 of the Target - AGB oil nozzle air impingement check, tool

(Line N°4), 856A2969G01.

(b) Remove the new starter drive pad assembly 340-047-804-0 from the support

plate P10 of the Target - AGB oil nozzle air impingement check, tool (Line

N°4), 856A2969G01.

(c) Loosen the two bolts which attach the support plate P10 to the adaptation

support of rigging xture, 856A3545.

(d) Remove the support plate P10 of the Target - AGB oil nozzle air impingement

check, tool (Line N°4), 856A2969G01 from the adaptation sup port of rigging

xture, 856A3545.

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 19
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(e) Remove the centering pin P14 from its location on the support plate P10 of

Target - AGB oil nozzle air impingement check, tool (Line N°4 ), 856A2969G01.

(7) Remove the target P01of the Target - AGB oil nozzle air impingement check, tool

(Line N°4), 856A2969G01 as follows:

(a) Loosen and remove the knurled nut P03 of the Target - AGB oil nozzle air

impingement check, tool (Line N°4), 856A2969G01 which atta ch the target

P01 to the rear face of the new starter drive pad assembly 340-047-804-0.

(b) Remove the target P01 of the Target - AGB oil nozzle air impingement check,

tool (Line N°4), 856A2969G01.

(c) Remove the master index P02 from the target P01 of the Target - AGB oil

nozzle air impingement check , tool (Line N°4), 856A2969G01 .

D. Installation of the new spool 335-310-200-0 and the new starter drive pad assembly

340-047-804-0 on the new AGB assembly 340-046-508-0. Refer to Engine Shop Manual

(ESM), ATA 72-63-00, Assembly 001. Refer to gure 2, gure 3 and gure 4.

NOTE: This step concerns the rework of old AGB assembly 340-046-505-0 to the new

AGB assembly 340-046-508-0.

(1) Install the new spool 335-310-200-0 in its place in the new AGB assembly

340-046-508-0 as follows:

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(a) Install the new O-rings 649-393-013-0 or J221P013 on the new spool

335-310-200-0.

(b) Install the new spool 335-310-200-0 with the O-rings 649-393-013-0 or

J221P013 in its place between the AGB housing and the new starter drive

pad assembly 340-047-804-0.

(2) Install the handcranking 62 tooth gearshaft assembly 340-051-901-0 on the new

starter drive pad assembly 340-047-804-0 as follows :

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(a) Lightly coat the outer diameter of the ball bearing 335-304-401-0 or

335-304-402-0 or 335-304-403-0 or 340-052-602-0 of the 62 tooth gearshaft

assembly 340-051-901-0 with engine oil (CP2442) .

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 20
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(b) Heat the bearing housing on the new starter drive pad assembly 340-047-804-0

with a heat gun. Do not increase the temperature of the bearing housing over

311°F (155°C).

(c) Install the ball bearing end of the 62 tooth gearshaft assembly 340-051-901-0

with its oil collector 335-309-900-0 in the new starter drive pad assembly

340-047-804-0 with the studs on pad as locators.

(d) Install correctly the oil collector 335-309-900-0 relative to the ball bearing.

Align the oil collector with the studs on pad. Refer to gure 3 sheet 3.

(e) Attach the 62 tooth gearshaft assembly 340-051-901-0 and its oil collector

335-309-900-0 to the studs 649-079-402-0 of the new starter drive pad

assembly 340-047-804-0 with the self locking nuts J626P04.

(f) Let the parts go back to ambient temperature.

(g) Torque the nuts J626P04 to 97-106 lb in. (11-12 N.m).

(h) Make sure that the 62 tooth gearshaft assembly 340-051-901-0 is correctly

engaged in the starter drive pad assembly 340-047-804-0. Use a 0.0016 inch

(0,04 mm) feeler gage to verify the clearance between the ball bearing ange

and the starter drive pad surface. Refer to Engine Shop Manual (ESM), ATA

72-63-00, Assembly 001

E. Installation of the new oil seal assembly 340-155-304-0, handcranking cover assembly

340-047-605-0 on the new AGB assembly 340-046-508-0. Refer to Engine Shop Manual

(ESM), ATA 72-63-00, Assembly 001. Refer to gure 2, gure 3, gure 4, gure 6 and

gure 7.

NOTE: This step concerns the rework of old AGB assembly 340-046-505-0 to the new

AGB assembly 340-046-508-0.

(1) Assembly of the new removal/installation tool, 856A2961G02 to install the new oil

seal assembly 340-155-304-0 on the handcranking 62 tooth gearshaft assembly

340-051-901-0 as follows: Refer to gure 7.

(a) Install the axe P05 of the removal/installation tool, 856A2961G02 through

the hole of the expander P02.

(b) Install the anti-rotation key P06 into the notch of the axe P05 of the

removal/installation tool, 856A2961G02.

(c) Install the ring P08 of the removal/installation tool, 856A2961G02 on the collet

P01. Align the holes and xe with the Pins P09.

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 21
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(d) Insert the axe P05 equipped with the anti-rotation keys P06 and expander P02

of the removal/installation tool, 856A2961G02 into the collet P01.

(e) Align the anti-rotation key P06 with the guide splines of the collet P01 of the

removal/installation tool, 856A2961G02.

(f) Install the nut P04 on the axe P05 of the removal/installation tool,

856A2961G02.

(g) Install the retaining ring P07 on the axe P05 of the removal/installation tool,

856A2961G02.

(h) Install the assembly (collet P01, expander P02, axe P05 and nut P04) of the

removal/installation tool, 856A2961G02 into the sleeve P03.

CAUTION: USE CLEAN, LINT-FREE GLOVES WHEN YOU TOUCH THE OIL SEAL

TO PREVENT CONTAMINATION.

(2) Install the mating ring 340-155-601-0 of new oil seal assembly 340-155-304-0 on

the handcranking 62 tooth gearshaft assembly 340-051-901-0 as follows: Refer to

gure 3, gure 6 and gure 7

CAUTION: MAKE SURE THE POLISHED FACE OF THE MATING RING AND

THE CARBON FACE OF THE SEAL HOUSING ARE CLEAN. LEAKS

WILL OCCUR IF PARTICLES, EVEN OF A VERY SMALL SIZE, ARE

BETWEEN THESE PARTS DURING THE INSTALLATION.

(a) Clean the mating surface of the mating ring 340-155-601-0 with tissue paper.

(b) Clean the glazed surface of the oil seal 340-155-504-0 with tissue paper.

WARNING: VAT TANK COVERS AND EXTINGUISHERS MUST BE AVAILABLE IF

A FIRE OCCURS. SOLVENT IS FLAMMABLE.

WARNING: CLEANING SOLVENT IS TOXIC AND FLAMMABLE. USE PERSONAL

PROTECTIVE EQUIPMENT. USE IN A WELL-VENTILATED AREA.

CAUTION: OBEY THE ENVIRONMENTAL REGULATION WHEN YOU DISCARD

CONSUMABLE PRODUCTS.

(c) Clean the surface of the handcranking 62 tooth gearshaft assembly

340-051-901-0 mating with the oil seal mating ring with a lint-less cloth

moistened by Acetone (CP1039) .

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 22
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(d) Lightly coat the O-ring 340-196-401-0 of the new oil seal assembly

340-155-304-0 with vaseline (CP5070) .

(e) Install the O-ring 340-196-401-0 in the groove at the inner diameter of new

mating ring 340-155-601-0.

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(f) Lightly coat the mating surface of the mating ring 340-155-601-0 with engine

oil (CP2442) .

(g) Lightly coat the mating surfaces of the handcranking 62 tooth gearshaft

assembly 340-051-901-0 which is in contact with the O-ring 340-196-401-0 on

the mating ring 340-155-601-0 with engine oil (CP2442) .

(h) Install the centering guide P10 of the removal/installation tool, 856A2961G02

on the new starter drive pad assembly 340-047-804-0 with its three tool xing

screws P11.

(i) Loosen the nut P04 and the collet P01 of removal/installation tool,

856A2961G02.

(j) Install the mating ring 340-155-601-0 on the claws of the collet P01 of

removal/installation tool, 856A2961G02.

(k) Tighten with hand the collet P01 and the nut P04 of removal/installation tool,

856A2961G02. Make sure that the position of ring is correct in the claws of

the collet.

(l) Tighten with hand the sleeve P03 of removal/installation tool, 856A2961G02 to

lock the mating ring 340-155-601-0 in the claws of the collet.

(m) Insert the mating ring 340-155-601-0 with the removal/installation tool,

856A2961G02 into its centering guide P10.

(n) Install the mating ring 340-155-601-0 on the handcranking 62 tooth gearshaft

assembly 340-051-901-0 with the removal/installation tool, 856A2961G02.

(o) Turn the removal/installation tool, 856A2961G02 until the lugs of mating ring

340-155-601-0 engage into the slots of the ball bearing inner race.

(p) Visually make sure that the mating ring 340-155-601-0 is correctly installed :

the bottom face of the side window of sleeve P03 of removal/installation tool,

856A2961G02 must be in line with the AGB forward face.

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 23
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(q) Loosen the sleeve P03 of removal/installation tool, 856A2961G02.

(r) Push the removal/installation tool, 856A2961G02 to make sure that the mating

ring 340-155-601-0 stays in place.

CAUTION: MAKE SURE THAT THE COLLET CLAWS ARE TOTALLY LOOSENED

AND THAT YOU DO NOT PULL AND DISENGAGE THE MATING

RING WITH THE REMOVAL/INSTALLATION TOOL. RING DAMAGE

AND OIL LEAKAGE CAN OCCUR.

(s) Loosen the nut P04 and the collet P01 of theremoval/installation tool,

856A2961G02.

(t) Remove theremoval/installation tool, 856A2961G02 from the centering guide

P10.

(u) Loosen the three tool xing screws P11 and remove the P10 centering guide

of the removal/installation tool, 856A2961G02 from the new starter drive pad

assembly 340-047-804-0.

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(v) Lightly coat the mating surface of the mating ring 340-155-601-0 with engine

oil (CP2442) .

CAUTION: USE CLEAN, LINT-FREE GLOVES WHEN YOU TOUCH THE OIL SEAL

TO PREVENT CONTAMINATION.

(3) Prepare the installation of oil seal housing 340-155-504-0 of new oil seal assembly

340-155-304-0 as follows: Refer togure 3, gure 6 and gure 7

WARNING: VAT TANK COVERS AND EXTINGUISHERS MUST BE AVAILABLE IF

A FIRE OCCURS. SOLVENT IS FLAMMABLE.

WARNING: CLEANING SOLVENT IS TOXIC AND FLAMMABLE. USE PERSONAL

PROTECTIVE EQUIPMENT. USE IN A WELL-VENTILATED AREA.

CAUTION: OBEY THE ENVIRONMENTAL REGULATION WHEN YOU DISCARD

CONSUMABLE PRODUCTS.

(a) Remove the grease from the mating surface of oil seal housing assembly

340-155-504-0 with a lint-less cloth moistened by acetone (CP1039) .

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 24
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(b) Remove the grease from the mating surface of new starter drive pad assembly

340-047-804-0 with a lint-less cloth moistened by acetone (CP1039) .

(c) Apply a bead of silicone elastomer sealant RTV102 (CP2266) or RTV103 on

the external diameter of seal housing Dim. E.

1 With a template with chamfer 3 mm and 45°, apply the bead of sil icone

elastomer sealant on Dim. E all over the diameter. Dim. E must be 0.12

inch (3,00 mm) except for the location of minimum mating surface between

seal housing and starter drive pad. In this location the minimum distance

must be 0.039 inch (1,00 mm).

2 Make sure that the bead of silicone elastomer sealant is regularly

distributed without any cutting specially in the location of minimum mating

surface between seal housing and starter drive pad.

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(d) Lightly coat the O-ring 649-393-034-0 or J221P034 of the new oil seal

assembly 340-155-304-0 with engine oil (CP2442) .

(e) Install the O-ring 649-393-034-0 or J221P034 in the groove at the outer

diameter of new oil seal 340-155-504-0.

CAUTION: BE CAREFUL DO NOT HIT THE OIL SEAL INTO THE GEARBOX

RECESS. THE MATING RING CAN MOVE APART AND CARBON

SEAL CAN BE DAMAGED.

(f) Install the oil seal housing assembly 340-155-504-0 on handcranking 62 tooth

gearshaft assembly 340-051-901-0. Slowly lower the housing assembly.

(g) Make sure that the housing of oil seal 340-155-504-0 is correctly engaged

with the centering pin 340-155-801-0 on the new starter drive pad assembly

340-047-804-0.

(h) Apply a thin layer of vaseline (CP5070) on the threads of two bolts AS3236-08.

(i) Attach the housing oil seal 340-155-504-0 with the two bolts AS3236-08 to the

inserts J970P03 of new starter drive pad assembly 340-047-804-0. Refer

togure 3, sheet 4.

(j) Torque the bolts AS3236-08 which attach the housing of oil seal 340-155-504-0

to 49-58 lb in. (5.5-6.5 N.m).

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 25
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(k) Make sure that the draining orice on the oil seal housing 340-155-504-0 is

completely free from RTV102 (CP2266) or RTV103 silicone elastomer sealant

bead. If not, remove the excess of sealant with spatula.

(l) Remove the excess of RTV102 (CP2266) or RTV103 silicone elastomer

sealant all over the oil seal housing outer diameter with dry lint-less cloth and

spatula.

(m) Put the assembly into an oven at 293°F (145°C) during 30 minut es to

polymerize the sealant.

(n) Remove the assembly from the oven and let it go to the ambient temperature.

(4) Install the new starter drive pad assembly 340-047-804-0 with the handcranking 62

tooth gearshaft assembly 340-051-901-0 on the new AGB assembly 340-046-508-0

as follows:

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(a) Lightly coat the new O-rings J221P163 or 649-393-163-0, J221P158 or

649-393-158-0 and J221P154 or 649-393-154-0 with engine oil (CP2442) .

(b) Install the new O-rings J221P163 or 649-393-163-0, J221P154 or

649-393-154-0 on the new starter drive pad assembly 340-047-804-0.

(c) Install the new O-ring J221P158 or 649-393-158-0 on the AGB housing.

(d) Remove the rubber cover from the inner race of the roller bearing

301-480-720-0or 301-480-724-0 or 301-480-726-0 or 301-480-723-0 or

340-055-801-0 of the 62 tooth gearshaft assembly 340-051-901-0.

(e) Lower carefully the new starter drive pad assembly 340-047-804-0 with the 62

tooth gearshaft assembly 340-051-901-0 in position.

Do a special attention when you engage the inner race of the roller bearing

301-480-720-0 or 301-480-724-0 or 301-480-726-0 or 301-480-723-0 or

340-055-801-0 with its outer race.

(f) Do a special attention when you engage the new O-rings J221P163 or

649-393-163-0 and J221P154 or 649-393-154-0 in the AGB housing.

(g) Apply a thin layer of Graphite compound (CP2101) on the threads of bolts

AS3237-14.

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(h) Install the bolts AS3237-14 and washers 649-341-031-0 which attach the new

starter drive pad assembly 340-047-804-0 to AGB housing.

(i) Torque the bolts AS3237-14 which attach the new starter drive pad assembly

340-047-804-0 to 97-106 lb in. (11-12 N.m).

F. Installation of the new brackets 340-199-801-0 and 340-206-001-0 for the new

handcranking pad drain tube 340-200-002-0 on the Accessory Gearbox assembly (AGB)

340-046-508-0. Refer to gure 2 and gure 9 .

NOTE: In production, the new AGB 340-046-508-0 have temporary washers (painted in

red color) into new brackets locations.

(1) Install the new bracket 340-206-001-0 on the new starter drive pad assembly

340-047-804-0 as follows:

(a) Remove the two bolts AS3237-14 and washers 649-341-031-0 or temporary

washers to attach the new bracket 340-206-001-0 on AGB housing through

starter drive pad assembly 340-047-804-0.

(b) Discard the two washer 649-341-031-0 or temporary washers.

(c) Put the new bracket 340-206-001-0 in position on the new starter drive pad

assembly 340-047-804-0.

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(d) Apply a thin layer of engine oil (CP2442) on the threads of bolts AS3237-14.

(e) Install the two bolts AS3237-14 and washers 649-341-031-0 to attach the

bracket 340-206-001-0 to the AGB housing through the new starter drive pad

assembly 340-047-804-0.

(f) Torque the bolt AS3237-14 to 97-106 lb in. (11-12 N.m).

(g) Wipe off the excessive engine oil (CP2442) on the surface of the bracket.

(2) Install the new bracket 340-199-801-0 on the hydraulic pump drive pad assembly

340-048-802-0 as follows:

(a) Remove the two bolts AS3237-12 and washer 649-341-031-0 to attach the

new bracket 340-199-801-0 on AGB housing through hydraulic pump drive

pad assembly 340-048-802-0.

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(b) Discard the two washer 649-341-031-0 or temporary washers.

(c) Put the new bracket 340-199-801-0 in position on the new hydraulic pump

drive pad assembly 340-048-802-0.

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(d) Apply a thin layer of engine oil (CP2442) on the threads of bolts AS3237-12.

(e) Install the two bolts AS3237-12 and washer 649-341-031-0 to attach the

bracket 340-199-801-0 to the AGB housing through the hydraulic pump drive

pad assembly 340-048-802-0.

(f) Torque the bolts AS3237-12 to 97-106 lb in. (11-12 N.m).

(g) Wipe off the excessive engine oil (CP2442) on the surface of the bracket.

G. Do the leak test of the new AGB assembly 340-046-508-0 before its installation on the

engine assembly. Refer to Engine Shop Manual (ESM), ATA 72-63-00, Assembly 001.

NOTE 1: This step concerns the rework of old AGB assembly 340-046-505-0 to the

new AGB assembly 340-046-508-0.

NOTE 2: When you do the leak test shown in Engine Shop Manual (ESM), ATA

72-63-00, Assembly 001, use the spray leak detector to detect any air leakage.

NOTE 3: When you nish the leak test shown in Engine Shop Manual (ESM), ATA

72-63-00, Assembly 001, do the following steps to make sure that the new

oil seal assembly 340-155-304-0 correctly operates and there in no leakage

through it.

(1) Connect the test air supply source to the nipple J1037P06 of new starter drive pad

assembly 340-047-804-0.

(2) Supply air to the starter drive pad and make sure that the draining orice is fully free

of RTV102 (CP2266) or RTV103 silicone elastomer sealant.

(3) Install the new handcranking cover assembly 340-047-605-0 on the new starter drive

pad assembly 340-047-804-0 of new AGB assembly 340-046-508-0 as follows :

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 28
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(a) Apply a thin layer of engine oil (CP2442) on new O-ring 649-393-137-0 or

J221P137.

(b) Install the new O-ring 649-393-137-0 or J221P137 in its place between the

new handcranking cover assembly 340-047-605-0 and the housing of oil

seal 340-155-504-0.

(c) Install the new handcranking cover assembly 340-047-605-0 on the housing of

oil seal 340-155-504-0.

(d) Make sure that the the new handcranking cover assembly 340-047-605-0 is

correctly seated on the housing of oil seal 340-155-504-0.

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(e) Apply a thin layer of engine oil (CP2442) on the threads of bolts AS3237-12.

(f) Attach the new handcranking cover assembly 340-047-605-0 to the new

starter drive pad assembly 340-047-804-0 with the new three bolts AS3237-12

and washers 649-341-031-0.

(g) Attach the new cable 335-322-902-0 of new handcranking cover assembly

340-047-605-0 to the new starter drive pad assembly 340-047-804-0 with the

bolt AS3237-14. Refer to gure 3 sheets 4 and 5.

(h) Torque the new bolts AS3237-12 to 97-106 lb in. (11-12 N.m).

(i) Torque the bolt AS3237-14 to 97-106 lb in. (11-12 N.m).

(4) Connect the test air supply hose under the following conditions to union P05 of

leak test tool set, 856A3549G02, to the nipple J1037P06 of new starter drive pad

assembly 340-047-804-0:

(a) Water content: dew point -40°F (-40°C) at atmospheric press ure.

(b) Temperature: ambient.

(c) Air ltration: lower than 40 microns, absolute.

NOTE: If the air supply source does not agree with the above test conditions,

replace by nitrogen of quality R.

(d) Deoiling: weight of remaining oil, less than 40 mg/kg of air.

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(5) Do the test as follows, Slowly pressurize the oil seal compartment up to 10-12 psig

(70-80 kPa gage).

(6) When you get the pressure level, close the test installation isolation valve and close

the air supply.

(7) Make sure that the pressure level is stable on the test installation pressure gage for

10 minutes. There must be no pressure decrease shown on the pressure gage. If

so, correct as follows:

(a) Find the leak, use spray leak detector.

(b) Depressurize the oil seal compartment.

(c) Remove the oil seal and install a new one.

(d) Do the leak test again.

(8) At completion of the leak test, release the pressure in the oil seal compartment.

H. Re-identication of the Old AGB assembly 340-046-505-0 to the new Part Number

340-046-508-0.

NOTE: This step concerns the rework of old AGB assembly 340-046-505-0 to the new

AGB assembly 340-046-508-0.

(1) Re-identication of the old AGB assembly 340-046-505-0 to the new AGB assembly

340-046-508-0. Refer to SPM, ATA 70-10-12, Vibro-Peen Marking as follows:

(a) Score out the old Part Number of the old AGB assembly 340-046-505-0 on the

AGB assembly identication plate. Refer to gure 1.

(b) Mark the new Part Number of the new AGB assembly 340-046-508-0 and the

Service Bulletin Number on the AGB assembly Identication plate.

I. Installation of the new AGB assembly 340-046-508-0 on the engine assembly. Refer to

Engine Shop Manual (ESM), ATA 72-00-63, Installation 001. Refer to gure 2 and gure 9.

NOTE 1: When you install the unchanged brackets and bracket assemblies on the new

AGB 340-046-508-0, install the new bracket assembly 340-091-111-0.

NOTE 2: When you install the oil return tube 340-015-302-0, install the new bracket

340-199-901-0. Refer to gure 9

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 30
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

NOTE 3: In production, the new AGB 340-046-508-0 have temporary washers (painted

in red color) into new bracket location.

(1) Install the new bracket assembly 340-091-111-0 on the new AGB assembly

340-046-508-0. Refer to gure 2.

(a) Remove the four bolts AS3237-14 and the washer 649-341-031-0 or temporary

washer to attach the new bracket assy 340-091-111-0 on AGB housing through

the new starter drive pad assembly 340-047-804-0.

(b) Discard the washer 649-341-031-0 or temporary washer.

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(c) Apply a thin layer of engine oil (CP2442) on the threads of bolts AS3237-14

and AS3237-10.

(d) Put the new bracket assembly 340-091-111-0 in position on the new starter

drive pad assembly 340-047-804-0.

(e) Put in position the cable 335-322-902-0 of the new handcranking cover

assembly 340-047-605-0 on the new bracket assembly 340-091-111-0.

(f) Attach the new bracket assembly 340-091-111-0 to AGB housing through the

new starter drive pad assembly 340-047-804-0 with bolts AS3237-14.

(g) Attach the new bracket assembly 340-091-111-0 to the bracket assembly

340-107-802-0 with bolts AS3237-10, washers 649-341-011-0 and nuts

AS3486-10.

(h) Torque the bolts AS3237-10 to 97-106 lb in. (11-12 N.m).

(i) Torque the bolts AS3237-14 to 97-106 lb in. (11-12 N.m).

(j) Wipe off the excessive engine oil (CP2442) on the surface of the bracket.

(2) Install the new bracket assy 340-199-901-0 on the ange of oil return tube

340-015-302-0 as follows:

NOTE: When you install the oil return tube, remove the plug N100-226 from the

AGB housing.

(a) Put the new bracket 340-199-901-0 in position on the ange of oil return

tube 340-015-302-0.

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(b) Apply a thin layer of Graphite compound (CP2101) on the threads of new

bolts AS3236-12.

(c) Install the new bolts AS3236-12 to attach the bracket 340-199-901-0 to the

AGB housing through the ange of oil return tube 340-015-302-0.

(d) Torque the new bolts AS3236-12 to 50-60 lb in. (5,5-7 N.m).

J. Installation of the new handcranking pad drain tube 340-200-002-0 on the new Accessory

Gearbox assembly (AGB) 340-046-508-0. Refer to gure 2, gure 4 and gure 9.

(1) Install the drain tube 340-200-002-0 to the new nipple J1037P06 of the new starter

drive pad assembly 340-047-804-0:

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(a) Apply a thin layer of Engine oil (CP2442) on the threads of nipple J1037P06.

(b) Attach the locking nut of the drain tube 340-200-002-0 to nipple J1037P06.

(2) Install the drain tube 340-200-002-0 on the new bracket 340-206-001-0 on the new

starter drive pad assembly 340-047-804-0 as follows:

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(a) Apply a thin layer of Engine oil (CP2442) on the threads of bolt AS3237-08

which attach the drain tube 340-200-002-0 on the new bracket 340-206-001-0.

(b) Install the clamp J1431P06 on the drain tube 340-200-002-0.

(c) Attach the drain tube 340-200-002-0 on the new bracket 340-206-001-0 with

clamp J1431P06, bolt AS3237-08 and nut AS3486-10.

(3) Install the new drain tube 340-200-002-0 on the new bracket 340-199-801-0 on the

hydraulic pump drive pad assembly 340-048-802-0 as follows:

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(a) Apply a thin layer of Engine oil (CP2442) on the threads of bolts AS3237-08

which attach the drain tube 340-200-002-0 on the new bracket 340-199-801-0.

(b) Install the clamps J1431P06 on the drain tube 340-200-002-0.

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

(c) Attach the drain tube 340-200-002-0 on the new bracket 340-199-801-0 with

two clamps J1431P06, bolts AS3237-08 and nuts AS3486-10.

(4) Install the new drain tube 340-200-002-0 on the new bracket 340-199-901-0 on the

ange of oil return tube 340-015-302-0 as follows:

WARNING: ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION

EQUIPMENT. USE IN A WELL-VENTILATED AREA.

(a) Apply a thin layer of Engine oil (CP2442) on the threads of bolt AS3237-08

which attach the drain tube 340-200-002-0 on the new bracket 340-199-901-0.

(b) Install the clamp J1431P06 on the drain tube 340-200-002-0.

(c) Attach the drain tube 340-200-002-0 on the new bracket 340-199-801-0 with

two clamps J1431P06, bolts AS3237-08 and nuts AS3486-10.

(5) Final tightening of the new drain tube 340-200-002-0 as follows:

(a) Make sure that the drain tube 340-200-002-0 is not strained.

(b) Torque the coupling nut of the drain tube 340-200-002-0 on the new nipple

J1037P06 of the new starter drive pad assembly 340-047-804-0 to 270-315 Ib

in. (30-35 N.m).

(c) Torque the bolts AS3237-08 which attach the drain tube 340-200-002-0 on the

new brackets 340-206-001-0, 340-199-801-0 and 340-199-901-0 to 63-72

lb in. (7-8 N.m).

(d) Wipe off the excessive engine oil (CP2442) on the coupling nut and brackets.

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Location of Change

Figure 1

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Removal / Installation of the Handcranking Cover and Starter Drive Pad Assemblies

Figure 2, Sheet 1 of 2

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 35
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Removal / Installation of the Handcranking Cover and Starter Drive Pad Assemblies

Figure 2, Sheet 2 of 2

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 36
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Old and New Conguration of Handcranking 62 Tooth Gearshaft and Cover Assemblies

Figure 3, Sheet 1 of 5

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 37
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Old and New Conguration of Handcranking 62 Tooth Gearshaft and Cover Assemblies

Figure 3, Sheet 2 of 5

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 38
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Old and New Conguration of Handcranking 62 Tooth Gearshaft and Cover Assemblies

Figure 3, Sheet 3 of 5

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 39
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Old and New Conguration of Handcranking 62 Tooth Gearshaft and Cover Assemblies

Figure 3, Sheet 4 of 5

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 40
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Old and New Conguration of Handcranking 62 Tooth Gearshaft and Cover Assemblies

Figure 3, Sheet 5 of 5

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 41
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Old and New Conguration of the Starter Drive Pad Assy

Figure 4, Sheet 1 of 3

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 42
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Old and New Conguration of the Starter Drive Pad Assy

Figure 4, Sheet 2 of 3

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 43
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Old and New Conguration of the Starter Drive Pad Assy

Figure 4, Sheet 3 of 3

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Impingement Test of the Oil Nozzle on the Starter Drive Pad

Figure 5, Sheet 1 of 3

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 45
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Impingement Test of the Oil Nozzle on the Starter Drive Pad

Figure 5, Sheet 2 of 3

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 46
ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Impingement Test of the Oil Nozzle on the Starter Drive Pad

Figure 5, Sheet 3 of 3

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

New Oil Seal Assy

Figure 6

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Installation of the Mating Ring of the New Oil Seal Assy

Figure 7

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Old and New Conguration of the Handcranking Cover Assy

Figure 8

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

Installation of the New Handcranking Pad Drain Line

Figure 9

October 13, 2009 CFM56-7B S/B 72-0564

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ENGINE - General (72-00-00) - Introduction of a New Accessory Gearbox Assembly (AGB) with a New

Starter Drive Pad and Rework of the Old AGB to the New One

4. A - PARTS PROGRESSION CHART

Part Number

Part Name

and/or

Characteristics

Identied by

Service Bulletin No.

340-046-503-0 Gearbox Assy Accessory Baseline

340-046-504-0 Gearbox Assy Accessory 72-0316

340-046-505-0 Gearbox Assy Accessory 72-0689

340-046-508-0 Gearbox Assy Accessory 72-0564

340-047-601-0 Cover - Assy baseline

340-047-602-0 Cover - Assy 72-0072

340-047-603-0 Cover - Assy 72-0140

Field rework

340-047-605-0 Cover - Assy 72-0564

340-047-802-0 Pad Assy - Drive Starter Baseline

340-047-804-0 Pad Assy - Drive Starter 72-0564

335-310-200-0 Spool 72-0564

340-155-304-0 Seal Assy - Oil 72-0564

340-091-109-0 Bracket Assy 72-0316

340-091-111-0 Bracket Assy 72-0564

340-206-001-0 Bracket 72-0564

340-199-801-0 Bracket 72-0564

340-199-901-0 Bracket 72-0564

340-200-002-0 Tube Assy -Drain 72-0564

October 13, 2009 CFM56-7B S/B 72-0564

Revision 3, May 25, 2011 PAGE 52