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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 t h a tw a st ob ei nt h er e v i s i o n1 .
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 .Con/g191guration 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 /g192ow criteria which was 2.89 US gal/h (70% of the /g192ow rate) and becomes 70% of the /g192ow rate.
The vertical dash in the left margin identi /g191es changes. Change, which does not affect technical content may not be highlighted in the Transmittal Sheet.
This Service Bulletin is reissued in entirety.
No text on this page: it may be a figure. Open the PDF to see it.
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 con/g191dence.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, modi /g191cations, spare parts, design,or con /g191guration 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. C ONFIGURATION 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. C ONFIGURATION CHART)w i l lb ei n t r o d u c e di np r o d u c t i o n 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 /g191gure 1, /g191gure 2 and /g191gure 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 con /g191guration 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 /g191gure 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 /g191gure 1, /g191gure 2 and /g191gure 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.
T o 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:
Modi/g191cation 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 modi/g191cation 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 Y ou 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 T ool 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 T ool 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 Assy- Handcranking 1199.00 (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 / oS n e c m a–S i t ed eM e l u n-M o n t e r e a u Aerodrome de Villaroche – BP 1936 77019 Melun Cedex - France T el: 33 (0) 1 64.14.85.72 Fax: 33 (0) 1 64.14.87.65 N o r t ha n dS o u t hA m e r i c aa n dA s i a Customers CFM Inc. Customers CFM International Inc Attn: Manager Warranty Administration One Neumann Way – Room 444 Cincinnati, OH 45215-1988 USA T el: 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. Con/g191guration 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