GEnx-1B Service Bulletins (SBs) SB 79-0022 R01 OIL - Oil Tank (79-11-10) - Replacement of the Ball Valve in the Filler Cap P/N 2349M62G01

Date Printed: May 15, 2015 GE PROPRIETARY INFORMATION - Not to be used, disclosed to

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### GEnx-1B SERVICE BULLETIN - 79-0022 R01 Revised: 05/13/2015 SB 79-0022 R01 OIL - OIL TANK (79-11-10) - REPLACEMENT OF THE BALL VALVE IN THE FILLER CAP P/N 2349M62G01 Issued: 03/09/2015

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Copyright (2015) General Electric Company, U.S.A.

TRANSMITTAL INFORMATION REVISION 1 TO SERVICE BULLETIN 79-0022 Revision 1 is issued to update paragraph 3., ACCOMPLISHMENT

. INSTRUCTIONS The original was issued March 09, 2015. Revision bars in the left margin identify changes. 1. PLANNING INFORMATION A. Effectivity * * * GEnx-1B54, -1B54/P1, -1B54/P2, -1B58, -1B58/P1, -1B58/P2, -1B64, -1B64/P1, -1B64/P2, -1B67, -1B67/P1, -1B67/P2, -1B70, -1B70/P1, -1B70/P2, -1B70/72/P1, -1B70/72/P2, -1B70/75/P1, -1B70/75/P2, -1B74/75/P1, -1B74/75/P2, -1B75/P1, -1B75/P2, -1B78/P2 This Service Bulletin is applicable to these GEnx-1B engines:

*GEnx-1B engines, serial numbers 956-275 and up (Post GEnx-1B S/B and 79-0015 any engine that has complied with this Service Bulletin to incorporate the filler cap P/N ).

2349M62G01



### These serial numbers are the best available data.
NOTE:All aircraft deliveries since the 18th February 2015 have had the filler caps reworked.GEnx-1B Service Bulletins (SBs) SB 79-0022 R01 OIL - Oil Tank (79-11-10) - Replacement of the Ball Valve in the Filler Cap P/N 2349M62G01

Date Printed: May 15, 2015 GE PROPRIETARY INFORMATION - Not to be used, disclosed to

others or reproduced without the express written consent of GE. Technical data is considered ITAR and/or EAR controlled; transfer of this data to a Non-US Person, without USG authorization, is strictly prohibited. Page 2of 8 

### The filler cap P/N is affected by this Service 2349M62G01 Bulletin. B. Description This Service Bulletin provides a procedure to replace or rework the filler cap P/N

. 2349M62G01 C. Compliance Category 2 GE recommends that you do this Service Bulletin as soon as possible without effect on revenue service or within 6 months of the issue date of this Service Bulletin.
NOTE: This Service Bulletin can be accomplished on wing or in shop. 

### This Service Bulletin is offered to improve the reliability or performance of your GE product, or to help prevent the occurrence of the event or condition described in this Service Bulletin. If the operator elects not to participate in the bulletin, that decision will be taken into consideration by GE in evaluating future product performance issues that may arise in the operator's fleet. D. Concurrent Requirements None. E. Reason (1) Objective: To replace or rework the filler cap P/N that was added by S/B 2349M62G01 , to improve the secondary seal function, and improve reliability. 79-0015 (2) Condition: A correctly installed filler cap does not leak. However, if the oil filler cap is not correctly installed in the current filler cap P/N , a 2349M62G01 high oil leakage may occur during engine operation. (3) Cause: The secondary seal in the current filler cap P/N has a ball 2349M62G01 valve P/N that has a surface roughness and profile that can

2349M68P01 prevent correct sealing and lead to an oil leakage if the filler cap is not correctly installed. (4) Improvement: The new ball valve P/N is manufactured by a new source. The 2349M68P01 improved surface finish and geometry of this ball valve, when incorporated by this Service Bulletin, will improve the sealing efficiency and minimize any oil leakage in the event that the filler cap is not correctly installed. (5) Substantiation: Substantiation is by test. 

### F. Approval The data contained in this Service Bulletin has been reviewed by the appropriate governmental authority and the repair(s) and modification(s) herein comply with the applicable Aviation Regulations and are APPROVED for installation in the model(s) listed in this Service Bulletin. G. Manpower After you get access to the filler cap, you will need approximately 1.0 man-hour for each engine or component. H. Weight and Balance Weight and balance are not changed. I. References(Use the latest version of these documents) GEK 9250, Commercial Engine Standard Practices Manual (SPM)GEnx-1B Service Bulletins (SBs) SB 79-0022 R01 OIL - Oil Tank (79-11-10) - Replacement of the Ball Valve in the Filler Cap P/N 2349M62G01

Date Printed: May 15, 2015 GE PROPRIETARY INFORMATION - Not to be used, disclosed to

others or reproduced without the express written consent of GE. Technical data is considered ITAR and/or EAR controlled; transfer of this data to a Non-US Person, without USG authorization, is strictly prohibited. Page 3of 8 

### GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) GEK 114079, GEnx-1B Component Maintenance Manual (CMM), 79-11-10 GEnx-1B, Boeing 787 Aircraft Maintenance Manual (AMM) GEnx-1B S/B , OIL - Oil Tank (79-11-10) - Introduction of

79-0015 New Filler Cap
NOTE: The reference documents listed below are for the engine manufacturer's internal use only: BPP: 15-79-00-01 QEM: 03374-15-101 

### J. Publications Affected GEK 114079, GEnx-1B Component Maintenance Manual (CMM), 79-11-10 K. Interchangeability One-way interchangeable. L. Software Accomplishment Summary Not applicable. 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 2349M68P01* (1) Valve, Ball NP (-)

-- J1438P141* (1) Packing, Preformed NP (-)

-- *Part not supplied by GE Engine Service Distribution L.L.C., see vendor FSCM A3460. NP = Not Provisioned NOTE: Prices are provided for planning purposes and are subject to change. (2) Other Spare Parts:

Part Number Qty/ Eng Part Name Unit ($) Price Pkg Qty Lead Time Days MS35275-221* (1) Pin, Retaining NP (-)

-- N400P35* (2) Washer NP (-)

-- MS17830V04C* (1) Nut, Self-Locking NP (-)

-- MS21042-04* (ALT) Nut, Self-Locking NP (-)

-- 2349M62G01* (1) Cap, Filler NP (-)

-- *Part not supplied by GE Engine Service Distribution L.L.C., see vendor FSCM A3460. NP = Not Provisioned NOTE: Prices are provided for planning purposes and are subject to change. (3) Consumables: WARNING: REFER TO THE PRODUCT LABEL AND THE MANUFACTURER'S (MATERIAL) SAFETY

DATA SHEET (SDS) FOR INSTRUCTIONS ON THE HAZARDS, STORAGE, SAFE HANDLING AND PROPER USE OF CONSUMABLE PRODUCTS. Code Number Description
C01-012 Liquid Locking Agent
C02-019 Oil, Engine Lubricating (engine oil)
C04-035 Solvent, General (isopropyl alcohol)
C04-180 Alcohol, Methyl (alcohol) 

### B. Industry Support Information Contact your Avio Customer Support Manager for industry supportGEnx-1B Service Bulletins (SBs) SB 79-0022 R01 OIL - Oil Tank (79-11-10) - Replacement of the Ball Valve in the Filler Cap P/N 2349M62G01

Date Printed: May 15, 2015 GE PROPRIETARY INFORMATION - Not to be used, disclosed to

others or reproduced without the express written consent of GE. Technical data is considered ITAR and/or EAR controlled; transfer of this data to a Non-US Person, without USG authorization, is strictly prohibited. Page 4of 8 

### details (including rotable and spare part information). Filippo Panataro E-mail: filippo.panataro@avioaero.it Tel: +39 011 0084202 C. Configuration Chart Not applicable. D. Parts Disposition Rework. E. Tooling - Price and Availability
Tool Number Description Local purchase Torque 5/32 Wrench Local purchase 2 inch/pound Torque 

### 3. ACCOMPLISHMENT INSTRUCTIONS A. Removal (1) Find the part number on the outside of the filler cap (1, 

### Figure 1) scupper. If it is P/N , it is affected by this Service Bulletin. 2349M62G01 Do a check of the adjacent section to this part number for additional marks. If there is a P/M BALL PP or RW or 79-0022 mark, this filler cap (1) already complies with the intent of this Service Bulletin and no action is necessary. (2) For all other filler cap (1) P/N , continue with the 2349M62G01 accomplishment instructions below: CAUTION: THE PREFORMED PACKING (3) IN THE FILLER CAP (1) ASSEMBLY NEEDS SOME

EFFORT TO UNSEAT THE FILLER CAP (1) ASSEMBLY FROM THE OIL TANK (4) AND REMOVE IT. BE CAREFUL WHEN THE FILLER CAP (1) ASSEMBLY IS REMOVED OR DAMAGE TO THE PART CAN OCCUR. THE FILLER CAP (1) ASSEMBLY REMOVAL MUST BE DONE WITH THE COWLS OPEN BECAUSE THE CLEARANCE THROUGH THE SERVICING DOOR IS INSUFFICIENT. (a) Remove the filler cap (1). Refer to the GEnx-1B Boeing 787 AMM, B787-A-G79-11-03-00A-520A-A and do as follows: 1 Remove the filler cap (1) from the oil tank (4) as follows:

a Disconnect the oil tank drain tube (5) from the filler cap (1). b Remove the four bolts (2) and four flat washers (6) that attach the filler cap (1) to the oil tank (4).

c Remove the filler cap (1) from the oil tank (4). d Remove the preformed packing (3) from the filler cap (1). Discard the preformed packing (3). NOTE: The best practice is to replace the preformed packing (3). But if necessary, a close visual inspection of the preformed packing (3) for distress (cracking, compression set, loss of flexibility) can be done to find out if the preformed packing (3) can be used again.

e Install protective covers on the open ports of the oil tank (4), oil tank drain tube (5), and filler cap (1). 

### B. Alternative Procedure for the Replacement of the Ball Valve in the Filler Cap (1) The ball valve replacement of the filler cap (1, can be done by 

### Figure 1) the original equipment manufacturer (OEM). Send the removed filler cap (and include this Service Bulletin number) to: GE Avio S.r.L. Viale Giuseppe Luraghi, 20 80038 Pomigliano d'Arco (NA) Italy To: Tommaso Miniscalco E-mail: tommaso.miniscalco@avioaero.it Tel: +39 081 3163514 The purchase order that references this Service Bulletin is to be addressedGEnx-1B Service Bulletins (SBs) SB 79-0022 R01 OIL - Oil Tank (79-11-10) - Replacement of the Ball Valve in the Filler Cap P/N 2349M62G01

Date Printed: May 15, 2015 GE PROPRIETARY INFORMATION - Not to be used, disclosed to

others or reproduced without the express written consent of GE. Technical data is considered ITAR and/or EAR controlled; transfer of this data to a Non-US Person, without USG authorization, is strictly prohibited. Page 5of 8 to: GE Avio S.r.l. Via I Maggio, 99 10040 - Rivalta di Torino (TO) - Italy 

### C. Rework
NOTE: The preference is to have the OEM do the ball valve (10) replacement in the filler cap (1). (1) If the customer replaces the ball valve (10, in the filler cap 

### Figure 1) (1), do the following procedure: (a) Rework the filler cap (1) as follows: 1 In a clean shop environment, remove and replace the ball valve (10) in the filler cap (1) as follows CAUTION: THE SELF-LOCKING NUT (7) HAS THREAD LOCK AND WILL RESIST

REMOVAL, BE CAREFUL WHEN THE SELF-LOCKING NUT (7) IS REMOVED TO AVOID DAMAGE. THE BALL VALVE (10) CAN BE DIFFICULT TO REMOVE. DO NOT USE TOOLS, THERE IS A SAFETY SCREEN THAT CAN BE EASILY DAMAGED AND WILL MAKE THE FILLER CAP (1) UNSERVICEABLE.

a Carefully remove the self-locking nut (7), the two washers (8), and the retaining pin (9). b Remove and discard the old ball valve (10).

c Carefully remove the new ball valve (10) from the packing and install it into the filler cap (1) housing. d Install the retaining pin (9) with one washer (8) into the bolthole of the filler cap (1) housing.

e Clean the retaining pin (9) with C04-180 alcohol or with C04-035 isopropyl alcohol. f Install the second washer (8) on the retaining pin (9). g Immediately before of the installation of the self-locking nut (7), apply C01-012 liquid locking agent on the retaining pin (9) that was previously cleaned. CAUTION: THIS IS A LOW INSTALLATION TORQUE. DO NOT APPLY TOO MUCH

TORQUE TO THE SELF-LOCKING NUT. DAMAGE TO THE RETAINING PIN OR THE FILLER CAP (1) HOUSING CAN OCCUR. h Install the self-locking nut (7) and torque it to 1.7-2.2 lb in. (0.20-0.25 N.m). NOTE: Obey the manufacturerþs recommended procedure for the thread lock and let sufficient cure time before the reinstallation of the filler cap (1). The rate of cure will be faster if the temperature rises. If the temperature lowers, it could be as long as 6 hours. Warming to 104 F (40 C) degrees can decrease the time to approximately 1 hour. Refer to the manufacturerþs recommendations. i Do an inspection for distortion. Make sure that the measure of the internal diameter at the bottom of the ball valve (10) site of the filler cap (1) is 0.3858-0.3937 inch (9.800-10.000 mm). j Find the part marking on the filler cap (1) and put a 79-0022 mark adjacent to the P/N. Refer to the GE SPM, 70-16-04, VIBRO-PEEN MARKING or 70-16-08, DOT PEEN MARKING FOR OPTICAL CHARACTER RECOGNITION. k Carefully hold and turn the filler cap (1) to make sure that the ball valve (10) moves freely. 

### D. Installation (1) Before the filler cap (1, is installed again into the oil tank 

### Figure 1) (4), do a general visual inspection (GVI) of the filler cap, specially the foreign object damage (FOD) screen installation integrity, flapper, locking lever mechanism function, and all seal/seating areas. (2) Install the filler cap (1) on the oil tank (4). Refer to GEnx-1B Boeing 787 AMM, B787-A-G79-11-03-00A-720A-A as follows: NOTE:Refer to the GEnx-1B Boeing 787 AMM for the post installation testGEnx-1B Service Bulletins (SBs) SB 79-0022 R01 OIL - Oil Tank (79-11-10) - Replacement of the Ball Valve in the Filler Cap P/N 2349M62G01

Date Printed: May 15, 2015 GE PROPRIETARY INFORMATION - Not to be used, disclosed to

others or reproduced without the express written consent of GE. Technical data is considered ITAR and/or EAR controlled; transfer of this data to a Non-US Person, without USG authorization, is strictly prohibited. Page 6of 8 requirements. A visual check of the installation of the preformed packing (3) can be done by two mechanics on this component as an alternative to an engine leak test. (a) Remove the protective covers from the open ports of the oil tank (4), oil tank drain tube (5), and filler cap (1). (b) Lubricate the new or serviceable preformed packing (3) with C02-019 engine oil. (c) Install the new or serviceable preformed packing (3) on the filler cap (1). (d) Put the filler cap (1) in its position on the oil tank (4). (e) Lubricate the threads and friction surfaces on the four bolts (2) with C02-019 engine oil. (f) Install the filler cap (1) on the oil tank (4) with the four bolts (2) and four flat washers (6). CAUTION: THE INSTALLATION OF THE FILLER CAP (1) INTO THE OIL TANK (4) NEEDS

SOME FORCE TO CORRECTLY SEAT THE PREFORMED PACKING (3). BE CAREFUL TO PREVENT DAMAGE. USE A CROSS-TORQUE PROCEDURE ON THE BOLTS (2) TO SLOWLY SEAT THE FILLER CAP (1) INTO THE OIL TANK (4). (g) Tighten the bolts (2) to 78-96 lb in. (8.8-10.8 N.m). (h) Connect the B-nut of the oil tank drain tube (5) to the filler cap (1). (i) Tighten the B-nut of the oil tank drain tube (5) to 262-308 lb in. (30.0-35.0 N.m).GEnx-1B Service Bulletins (SBs) SB 79-0022 R01 OIL - Oil Tank (79-11-10) - Replacement of the Ball Valve in the Filler Cap P/N 2349M62G01

Date Printed: May 15, 2015 GE PROPRIETARY INFORMATION - Not to be used, disclosed to

others or reproduced without the express written consent of GE. Technical data is considered ITAR and/or EAR controlled; transfer of this data to a Non-US Person, without USG authorization, is strictly prohibited. Page 7of 8 

### Removal/Installation of the Filler Cap

Figure 1 (Sheet 1)GEnx-1B Service Bulletins (SBs) SB 79-0022 R01 OIL - Oil Tank (79-11-10) - Replacement of the Ball Valve in the Filler Cap P/N 2349M62G01

Date Printed: May 15, 2015 GE PROPRIETARY INFORMATION - Not to be used, disclosed to

others or reproduced without the express written consent of GE. Technical data is considered ITAR and/or EAR controlled; transfer of this data to a Non-US Person, without USG authorization, is strictly prohibited. Page 8of 8 

### Removal/Installation of the Filler Cap

Figure 1 (Sheet 2)

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