# ALERT SER VICE BULLETIN REVISION NOTICE

ENGINE FUEL AND CONTROL

— FUEL NOZZLE TO FUEL NOZZLE SUPPL Y MANIFOLD INTERF ACE

— INSPECTION FOR FUEL LEAKS, SOOT AND COKE FORMA TION, AND INCORPORA TION OF AN INCREASED TUBE COUPLING NUT (B-NUT) TORQUE Turbojet Engine Service Bulletin No. PW4G-100-A73-44 Revision No. 1 dated February 12, 2015. Revi s i o n H i sto ry Original Issue October 10, 2014 Revision 1 dated February 12, 2015 Reaso n f o r th e Revi s i o n T o change “All engines” to “Engine Serial Nos. P735001 thru P735161” for the PW4168A-1D and PW4170 engine models in the Planning Information section. T o change the Added Data section to indicate the engine manual has been updated with the new torque values. T o correct service bulletin prefix “PW4ENG” to “PW4G” in the Problem. T o correct the Aircraft T ype Certificate holder statement in the Approval Data section. Ef fect of Revi s i o n o n P ri o r Co m p l i a n ce None. Th i s i s a Co m p l ete Revi s i o n ( N ot Ap p l i ca b l e to th e S G M L ve rs i o n ) The contents are in accordance with the list of ef fective pages. All pages have the current revision number

. T echnical changes are marked with black bars. M O D E L AP P L I CA T I O N PW4164, PW4164-1D, PW4168, PW4168-1D, PW4168A, PW4168A-1D, PW4170 B U L L ET I N I S S U E S E Q U E N C E PW4G-100 Series A73-44

Pag e Revi s i o n N o

. D ate 1 thru 23 1 February 12/15 A copy of this Revision Notice and any future revision notices must be filed as a permanent record with your copy of the subject bulletin.

P&W D i stri b u ti o n Cod e 2639 

# PW4G-100-A73-44 Page 1 of 1 Published in United States of America Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).

# ALERT SER VICE BULLETIN

ENGINE FUEL AND CONTROL

— FUEL NOZZLE TO FUEL NOZZLE SUPPL Y MANIFOLD INTERF ACE

— INSPECTION FOR FUEL LEAKS, SOOT AND COKE FORMA TION, AND INCORPORA TION OF AN INCREASED TUBE COUPLING NUT (B-NUT) TORQUE
M O D E L AP P L I CA T I O N PW4164, PW4164-1D, PW4168, PW4168-1D, PW4168A, PW4168A-1D, PW4170
B U L L ET I N I S S U E S E Q U E N C E PW4G-100 Series A73-44
A T A N U M B E R 73-1 1-00

U TC/P&W P RO P R I ET AR Y I N F O R MA T I O N This document is the property of United T echnologies Corporation

— Pratt & Whitney (UTC/P&W). Y ou may not possess, use, copy or disclose this document or any information in it, for any purpose, including without limitation to design, manufacture, or repair parts, or obtain F AA or other government approval to do so, without UTC/P&W’s express written permission. Neither receipt nor possession of this document alone, from any source, constitutes such permission. Possession, use, copying or disclosure by anyone without UTC/P&W’s express written permission is not authorized and may result in criminal and/or civil liability

. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3). Co m p l i a n ce Categ o ry 3 P&W D i stri b u ti o n Cod e 2639 

## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 1 of 23 Published in United States of AmericaS u m m a ry The purpose of this Service Bulletin is to provide a fleet management plan to address PW4000-100” engine fuel system leaks. There have been ten (10) occurrences of fuel leaks and all occurrences were on engines installed with the T alon IIB combustor chamber configuration. The investigation of these fuel leaks has identified that the leak occurs at the B-nut connection interface between the fuel supply manifold and fuel injector support (fuel nozzle). This Service Bulletin recommends a one-time increased re-torque of the B-nut be completed as soon as possible but no later than November 1, 2015. As an interim measure, this Service Bulletin recommends a visual inspection be performed within the next A-check interval followed by repetitive inspections until the increased torque application is implemented. N OT E : In Pratt & Whitney Manuals and Service Bulletins, the terms “Fuel Nozzles” and “Fuel Injectors” are used interchangeably

. “Tube Coupling Nuts” and “B-nuts” are also used interchangeably

. P l a n n i n g I nf o rm ati o n Ef fectivity D ata E n g i n e M od e l s Ap p l i ca b l e PW4164, PW4168, PW4168A Engine Serial Nos.

— All Engines that have incorporated Reference 5, Service Bulletin PW4G-100-72-214, or Reference 6, Service Bulletin PW4G-100-72-219, or Reference 8, Service Bulletin PW4G-100-72-220. PW4168A-1D, PW4170 Engine Serial Nos. P735001 thru P735161 This Service Bulletin also applies to engines converted to the PW4164-1D, PW4168-1D, PW4168A-1D, PW4170 models by Reference 8, Service Bulletin PW4G-100-72-220. Co n cu rre nt Req u i re m e n ts There are no concurrent requirements. Reaso n 1. Problem: T en (10) PW4000-100 inch engines have experienced fuel leaks at the fuel nozzle to fuel supply manifold connection interface. Four (4) of these fuel leaks resulted in fire warning during flight while the remaining leaks were found during post flight or test cell troubleshooting for fuel leaking. All ten fuel leak occurrences were on engines installed with the T alon IIB combustor chamber configuration. This combustion chamber configuration is used in all PW4000-100 inch engines post Reference 5, SB PW4G-100-72-214 , Reference 6, SB PW4G-100-72-219 and Reference 8, SB PW4G-100-72-220 , and production PW4168A-1D and PW4170 engines. 2. Cause: The Investigation of these fuel leaks has identified that the leak occurs at the B-nut connection interface between the fuel supply manifold and fuel nozzle. T emperature combined with operational loading pressures and low and high cycle stresses reduces clamping load below the minimum requirement for ef fective outer conical seat sealing. 3. Solution: Perform a one-time re-torque (increased torque) of the B-nut connection interface between the fuel supply manifold and fuel nozzle per the accomplishment instructions. In the interim time frame before the increased torque procedure is


## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 2 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).accomplished; perform a visual inspection within next A-check interval. Perform a repetitive visual inspection at each A-check until the increased torque is implemented. D escri pti o n Inspect the fuel nozzle to fuel supply manifold connection interfaces for fuel leaks, and soot or coke formation. Replace leaking fuel injectors and associated fuel injector supply manifolds. Loosen all of the B-nuts and apply an increased torque. Co m p l i a n ce Category 3
Part A Do by the next ’A ’ check and at every subsequent ’A ’ check until Part B or Part C or Part D or Part E of this service bulletin has been completed. Incorporation of Part B, or Part C, or Part D, or Part E is closing action for the Part A repetitive inspection.
Parts B, C, D, and E For Engines with more than 2500 cycles* Do as soon as possible but no later than January 31, 2015 For Engines with 1500

– 2500 cycles* Do as soon as possible but no later than May 31, 2015 For Engines with less than 1500 cycles* Do as soon as possible but no later than November 1, 2015
*For the purpose of this Service Bulletin the cycles are defined as since new (1st run) or since last torque application to the B-nuts on the fuel nozzle installation. Ap p rova l D ata The part number changes and/or part changes specified in the Material Information section and Accomplishment Instructions of this Service Bulletin agree with the applicable Federal A viation Regulations and are F AA-Approved for the engine model(s) given. The times between inspections specified in Compliance and the inspection procedures specified in the Accomplishment Instructions agree with the applicable Federal A viation Regulations and are F AA-Approved for the engine model(s) given. The aircraft TC holder has been informed of this change. M a n powe r The estimate of man-hours of labor directly necessary to do the intent of this Service Bulletin are as follows: 1. Open and close cowl doors

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 2. Necessary to gain access to the (24) fuel nozzle interfaces

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.0 3. Inspect (24) locations for leaks

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 

## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 3 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).4. Necessary to loosen and re-torque 24 B-nuts and install safety wire

. . . . . . . . . . . . . . . . 7.2 5. Necessary to install removed hardware

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25.6 6. Perform post-requisite testing

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 7. T otal Necessary Man-hours

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48.0 N OT E : Additional man-hours will be required if fuel nozzles and fuel supply manifold tubes need to be replaced. We i g ht D ata No Change. E l ectri ca l Load D ata Not Applicable. Sof twa re Acco m p l i s h m e n t S u m m a ry Not Applicable. Refe re n ces 1. Turbojet Engine Standard Practices Manual, Part No. 585005. 2. PW4164, PW4168, PW4168A, PW4170 Turbofan Engines, Illustrated Parts Catalog, Part No. 51A343. 3. PW4164, PW4164-1D, PW4164C, PW4164C-1D, PW4164C/B, PW4164C/B-1D, PW4168, PW4168-1D, PW4168A, PW4168A-1D, PW4170 Turbofan Engines, Engine Manual, Part No. 51A342. 4. Airbus A330 Aircraft Maintenance Manual. 5. Service Bulletin No. PW4G-100-72-214; Engine

— Chamber Assemblies, Inner And Outer Combustion

— Introduction Of The T alon IIB T o Reduce Combustor Exit T emperature At The Outer Diameter

. Issue Sequence 72-214, PW4G-100 Series. 6. Service Bulletin No. PW4G-100-72-219; Engine

— Modification Of, T o Incorporate The Advantage70TM Performance And Durability Upgrade Kit T o Improve Engine Reliability And Reduce Thrust Specific Fuel Consumption. Issue Sequence 72-219, PW4G-100 Series. 7. Service Bulletin No. PW4G-100-73-34; Engine Fuel And Control

— Nozzle And Support Assembly, Fuel

— Replace With A New More Durable Fuel Nozzle And Support Assembly

. Issue Sequence 73-34, PW4G-100 Series. 8. Service Bulletin No. PW4G-100-72-220; Engine

— Conversion Of A PW4164, PW4168, Or PW4168A Engine T o A PW4164-1D, PW4168-1D, PW4168A-1D, Or PW4170 Engine. Issue Sequence 72-220, PW4G-100 Series. N OT E : References 5 thru 7 are shown to help find configurations in relation to this bulletin. N OT E : Reference 8 is shown to help find non-production configurations that may incorporate this bulletin. P u b l i cati o n s C h a n g ed PW4164, PW4168, PW4168A, PW4170 Turbofan Engines, Illustrated Parts Catalog, Part No. 51A343 73-1 1-00, Figures 5 and 6 

## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 4 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).PW4164, PW4164-1D, PW4164C, PW4164C-1D, PW4164C/B, PW4164C/B-1D, PW4168, PW4168A, PW4168A-1D, PW4170 Turbofan Engines, Engine Manual, Part No. 51A342. 71-00-73, Installation-15 72-41-00, Assembly-03 I n te rch a n g ea b i l ity Not Applicable. I nf o rm ati o n i n th e Ap pe n d ix Alternate Accomplishment Instructions (No) Progression Charts (No) Added Data (Y es) Revision to T able of Limits (No) Inspection Procedures (No)



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 5 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).M ate ri a l I nf o rm ati o n M ate ri a l

— Cost a n d A va i l a b i l ity 1. There is no new material cost to do this Service Bulletin if new fuel nozzles or fuel supply manifolds are not required. 2. There is no kit provided to do this Service Bulletin. 3. Part availability information is provided in material data Instructions

— Disposition. I n d u stry S u p po rt P rog ra m Not Applicable. Th e m ate ri a l d ata th at f o l l ows i s f o r each e n g i n e

. N OT E : It is possible to use the Chapter/Section and Figure/Item reference number shown below the old part number to find the part in the Illustrated Parts Catalog. Because there are many dif ferent configurations used, it is frequently necessary to show more than one group of parts. When this occurs, parts that are interchangeable are shown line-by-line only, unless this is shown dif ferently

. CAU T I O N : THE FOLLOWING MA TERIAL DA T A T ABLE(S) ARE ORGANIZED BY ILLUSTRA TED P ARTS CA T ALOG. ALL P ARTS IN THE T ABLE(S) MA Y OR MA Y NOT BE APPLICABLE TO ALL THE ENGINE MODELS SHOWN IN THE T ABLE HEADING. YOU MUST REFER TO THE APPROPRIA TE ILLUSTRA TED P ARTS CA T ALOG FOR ENGINE MODEL APPLICABILITY USING THE OLD P ART NUMBER (PN) AND CA T ALOG SEQUENCE NUMBER. F AILURE TO INST ALL THE P ART(S) IN THE CORRECT ENGINE MODEL MA Y RESUL T IN A CONFIGURA TION THA T IS NOT F AA APPROVED. Th e m ate ri a l d ata th at f o l l ows i s f o r each e n g i n e

. Fo r PW4 1 64 , PW4 1 64

- 1 D , PW4 1 6 8 , PW4 1 68

- 1 D , PW4 1 6 8A, PW4 1 68A

- 1 D , PW4 1 70 E n g i n es : New PN Qty Estimate of Unit Price ($) Keyword Old PN Instructions

— Disposition 24 INJECTOR AND SUPPORT ASSEMBL Y

— FUEL 51J1 16 (73-1 1-00-5-10 D) (3)(4)(N)(X)

OR 24 13,220.00 NOZZLE AND SUPPORT ASSEMBL Y

— FUEL 51J345 (73-1 1-00-5-10 E) (3)(4)(C)

24 38.60 GASKET OPTION ST1 141-40 (73-1 1-00-5-1) (C)(E)(O1)



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 6 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).New PN Qty Estimate of Unit Price ($) Keyword Old PN Instructions

— Disposition 7 5,493.00 MANIFOLD

— ASSY OF, SUPPL Y , FUEL INJECTOR (FS 1

– 3, 5

– 8) 50J959-01 (73-1 1-00-6-10 A) (3)(4)(C)

1 5,125.00 MANIFOLD

— ASSY OF, SUPPL Y , FUEL INJECTOR (FS 4) 50J958-01 (73-1 1-00-6-20 A) (3)(4)(C)

24 5.39 P ACKING

— PREFORM ST1946-010 (73-1 1-00-6-1 B) (C)(E)
AR 8.41 CABLE

— SAFETY AS3510-0218C (73-1 1-00-6-80 A) (C)(E)(U)
AR 4.13 FERRULE

— SAFETY CABLE AS3510-02F (73-1 1-00-6-81) (C)(E)(U)
AR 0.19 WIRE

— SAFETY AS3214-02 (73-1 1-00-6-81) (C)(E)(U)

M od ifi cati o n a n d S pa res I nf o rm ati o n Estimated part prices are provided when they are available at time of publication. The Estimate of Unit Price is only for planning purposes and does not constitute a firm quotation. An asterisk (*) is shown where part pricing information was unavailable. In either case, contact Pratt & Whitney Spares Management & Logistics for firm quotations. Parts Modification Conditions (3) Replace as required based on results of the inspection in the Accomplishment Instructions. (4) Do an inspection as specified in the Accomplishment Instructions. Spare Parts A vailability (C) The old part will continue to be supplied. (E) The old part is an expendable item necessary to do this bulletin. (N) The old part is not available. (O1) Gasket Option, PN ST1 141-40, consists of a Gasket, PN P13U51-0029-2, or PN ST1 121-40. (U) Safety Cable and Safety Cable Ferrule are used together

. Safety Wire may be used in place of the Cable and Ferrule. (X) See Reference 2, Illustrated Parts Catalog for applicable replacement parts. V endor Services or Special Components/Materials Not Applicable.



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 7 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).M ate ri a l D ata f o r E ach S pa re E n g i n e The material for each spare engine is as stated in the preceding material information section. Re i d e ntifi ed Pa rts Not Applicable. N ecessa ry T oo l s S u p po rt E q u i p m e nt ava i l a b l e bef o re T ool No. Name Manufacturer V arious Flexible Borescope V arious Oth e r M ate ri a l I nf o rm ati o n D ata Engine Oil, PW A 521 (P03-001), is a consumable material that is required when replacing parts in this Service Bulletin.



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 8 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).Acco m p l i s h m e nt I n stru cti o n s Pa rt A ( Fo r E n g i n es O n -Wi n g )

— Do a re petitive i n s pecti o n of th e (24 ) fu e l n ozzl e to fu e l s u p p ly m a n if o l d co n n ecti o n i n te r faces N OT E : This Part is applicable until the re-torque of all (24) B-nuts is completed by the applicable compliance date for Part B, C, D, or E. 1. Open the thrust reverser doors as specified in Reference (4), Airbus A330 Aircraft Maintenance Manual (AMM). 2. Allow the engine to cool down to a working temperature. 3. Visually inspect the (24) fuel nozzle to fuel supply manifold connection interfaces for fuel leaks and soot or coke formation. Use a flexible borescope to view locations that are located in back of other hardware. See Figures 3 thru 6. 4. If signs of fuel leakage, or soot or coke formation is found at any location, do the following steps: N OT E : Replacement of hardware may be deferred, provided the af fected area is cleaned and the B-Nut(s) is/are torqued as specified in Part B., Step 3 and Steps 6

– 10, but a high power (1.4 Engine Pressure Ratio) run must be accomplished to ensure no leakage. If any leakage is observed after the high power run, the af fected hardware must be immediately replaced as specified below

. If leakage is not detected, a repeat inspection every 15

– 20 cycles is required of the af fected locations until this Service Bulletin is completed. However, if any further fuel leakage, or soot or coke formation is found during the repetitive inspection, the af fected hardware must be immediately replaced as specified below

. A. Remove the ef fected fuel injector(s) and associated fuel injector supply manifold(s) per Reference (4), AMM, Chapter/Section 73-1 1-15, Removal-01. B. Install replacement fuel injector(s) per Reference (4), Airbus A330 Aircraft Maintenance Manual, Chapter/Section 73-1 1-15, Installation-01. (1) Discard the old gasket option and install a new Gasket Option, PN ST1 141-40. (2) Install a replacement Fuel Nozzle and Support Assembly, PN 51J345. C. Install replacement fuel injector supply manifold(s) Reference (4), Airbus A330 Aircraft Maintenance Manual, Chapter/Section 73-1 1-15, Installation-01, but use the following steps: (1) Discard the old packings and install new Packings, PN ST1946-010. (2) Install a replacement Fuel Injector Supply Manifold, PN 50J959-01 or PN 50J958-01. (3) Apply Engine Oil, PW A 521 (P03-001), to the threads of the fuel nozzle supply manifold B-nuts. Include a few drops of oil to the B-nut thrust wire area (apply at the top of the B-nut after hand tightened). (4) Use the manifold tube elbows as a second wrenching flat and apply a torque of 250

– 270 lbf-in (28.246

– 30.506 N.m) to the B-nut. N OT E : The torque value for the fuel supply tube B-nut connection at the fuel injector supply manifold is not being revised (see Figure 6). (5) Install Safety Cable, PN AS3510-0218C, and Safety Ferrule, PN AS3510-02F, or Safety Wire, PN AS3214-02, to the B-nuts. 

## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 9 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).5. If fuel injector(s) and associated fuel injector supply manifold(s) were replaced, do the following: A. Install all hardware/components that were removed to gain access to the fuel injector supply manifold(s) and fuel injector(s). B. Service any system disturbed components (Hydraulic Pump, IDG, and Starter) as necessary

. C. Perform post-requisite checks/tests as specified in Reference (4), Airbus A330 Aircraft Maintenance Manual. 6. Close the thrust reverser doors as specified in Reference (4), Airbus A330 Aircraft Maintenance Manual.



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 10 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).Pa rt B ( Fo r E n g i n es O n -Wi n g )

— Do a n i n s pecti o n a n d re-to rq u e of th e (24 ) fu e l n ozzl e to fu e l s u p p ly m a n if o l d co n n ecti o n i n te r faces 1. Open the thrust reverser doors as specified in Reference (4), Airbus A330 Aircraft Maintenance Manual (AMM). 2. Allow the engine to cool down to a working temperature. 3. Remove any hardware as required for access to the (24) fuel nozzles. Use the procedures in Reference 4., Airbus A330 Aircraft Maintenance Manual (AMM). N OT E : Pratt & Whitney trials have found it necessary to remove the Starter, Starter Heat Shield, Integrated Drive Generator (IDG) and the IDG Heat Shield in order to gain access to the B-nut connections. Based on individual operator experience, more or less hardware/components may or may not require removal. See Figure 5. 4. Visually Inspect the (24) fuel nozzle to fuel supply manifold connection interfaces for fuel leaks and soot or coke formation. See Figures 3 and 4. 5. If signs of fuel leakage, or soot or coke formation is found at any location, do the following steps: N OT E : Replacement of hardware may be deferred, provided the af fected area is cleaned and the B-Nut(s) is/are torqued as specified in Part B., Step 3 and Steps 6-10, but a high power (1.4 EPR) run must be accomplished to ensure no leakage. If any leakage is observed after the high power run, the af fected hardware must be immediately replaced as specified below

. If leakage is not detected, a repeat inspection every 15

– 20 cycles is required of the af fected locations until this Service Bulletin is completed. However, if any further leakage, soot or coke formation is found during the repetitive inspection, the af fected hardware must be immediately replaced as specified below

. Replacement of hardware must be completed by the applicable compliance date. A. Remove the ef fected fuel injector(s) and associated fuel injector supply manifold(s) per Reference (4), AMM, Chapter/Section 73-1 1-15, Removal-01. B. Install replacement fuel injector(s) per Reference (4), Airbus A330 Aircraft Maintenance Manual, Chapter/Section 73-1 1-15, Installation-01, but use the following steps: (1) Discard the old gasket option and install a new Gasket Option, PN ST1 141-40. (2) Install a replacement Fuel Nozzle and Support Assembly, PN 51J345. C. Install replacement fuel injector supply manifold(s) Reference (4), Airbus A330 Aircraft Maintenance Manual, Chapter/Section 73-1 1-15, Installation-01, but use the following steps: (1) Discard the old packings and install new Packings, PN ST1946-010. (2) Install a replacement Fuel Injector Supply Manifold, PN 50J959-01 or PN 50J958-01. (3) Apply Engine Oil, PW A 521 (P03-001), to the threads of the fuel nozzle supply manifold B-nuts. Include a few drops of oil to the B-nut thrust wire area (apply at the top of the B-nut after hand tightened).



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 1 1 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).(4) Use the manifold tube elbows as a second wrenching flat and apply a torque of 250

– 270 lbf-in (28.246

– 30.506 N.m) to the B-nut. N OT E : The torque value for the fuel supply tube B-nut connection at the fuel injector supply manifold is not being revised (see Figure 6). (5) Install Safety Cable, PN AS3510-0218C, and Safety Ferrule, PN AS3510-02F, or Safety Wire, PN AS3214-02, to the B-nuts. 6. For all of the remaining locations where there were no signs of fuel leakage, soot or coke formation, loosen and re-torque the B-nuts as follows: CAU T I O N : DO THE FOLLOWING STEPS TO ONE B-NUT A T A TIME ON A FUEL SUPPL Y MANIFOLD. LOOSENING MUL TIPLE B-NUTS ON A SINGLE FUEL SUPPL Y MANIFOLD MA Y RESUL T IN THE FUEL SUPPL Y MANIFOLD MOVING OUT OF POSITION RESUL TING IN MISALIGNMENT OF THE B-NUT AND FUEL NOZZLE INTERF ACE. A. Remove the safety cable/ferrule or safety wire from the B-nut. B. Loosen the B-nut to fully disengage threads. C. Apply Engine Oil, PW A 521 (P03-001), to the exposed threads of the fuel nozzle. Include a few drops of oil to the B-nut thrust wire area (apply at the top of the B-nut after hand tightened). D. Use the manifold tube elbows as a second wrenching flat and apply a torque of 250

– 270 lbf-in (28.246

– 30.506 N.m) to the B-nut. N OT E : The torque value for the fuel supply tube B-nut connection at the fuel injector supply manifold is not being revised (see Figure 6). E. Install Safety Cable, PN AS3510-0218C, and Safety Ferrule, PN AS3510-02F, or Safety Wire, PN AS3214-02, to the B-nut. 7. Install all hardware/components that were removed to gain access to the fuel injector supply manifold(s) and fuel injector(s) as specified in Reference (4), Airbus A330 Aircraft Maintenance Manual. 8. Service any system disturbed components (Hydraulic Pump, IDG, and Starter) as necessary as specified in Reference (4), Airbus A330 Aircraft Maintenance Manual. 9. Perform post-requisite checks/tests as specified in Reference (4), Airbus A330 Aircraft Maintenance Manual. 10. Close the thrust reverser doors as specified in Reference (4), Airbus A330 Aircraft Maintenance Manual.



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 12 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).Pa rt C ( Fo r E n g i n es Of f

-Wi n g , co m p l ete e n g i n es o r pa rti a l ly d i sasse m b l ed e n g i n es ) Do a n i n s pecti o n a n d re-to rq u e of th e (24 ) fu e l n ozzl e to fu e l s u p p ly m a n if o l d co n n ecti o n i n te r faces N OT E : This Part is for engines that have MORE THAN zero cycles since the fuel nozzles and fuel supply manifolds were installed. 1. Remove necessary hardware/components to gain access to all (24) fuel injector supply manifold B-nut connections to the fuel injectors as specified in Reference (3), Engine Manual. 2. Visually inspect the (24) fuel nozzle to fuel supply manifold connection interfaces for fuel leaks and soot or coke formation. See Figures 3 and 4. 3. If signs of leakage, soot or coke formation is found at any location, do the following steps: A. Remove the ef fected fuel injector(s) and associated fuel injector supply manifold(s) per Reference (3), Engine Manual, Chapter/Section 71-00-73, Removal-15. B. Install replacement fuel injector(s) per Reference (3), Engine Manual, Chapter/Section 71-00-73, Installation-15. (1) Discard the old gasket option and install a new Gasket Option, PN ST1 141-40. (2) Install a replacement Fuel Nozzle and Support Assembly, PN 51J345. C. Install replacement fuel injector supply manifold(s) per Reference (3), Engine Manual, Chapter/Section 71-00-73, Installation-15, but use the following steps: (1) Discard the old packings and install new Packings, PN ST1946-010. (2) Install a replacement Fuel Injector Supply Manifold, PN 50J959-01 or PN 50J958-01. (3) Apply Engine Oil, PW A 521 (P03-001), to the threads of the fuel nozzle supply manifold B-nuts. Include a few drops of oil to the B-nut thrust wire area (apply at the top of the B-nut after hand tightened). (4) Use the manifold tube elbows as a second wrenching flat and apply a torque of 250

– 270 lbf-in (28.246

– 30.506 N.m) to the B-nut. N OT E : The torque value for the fuel supply tube B-nut connection at the fuel injector supply manifold is not being revised (see Figure 6). (5) Install Safety Cable, PN AS3510-0218C and Safety Ferrule, PN AS3510-02F or Safety Wire, PN AS3214-02, to the B-nut. 4. For all of the remaining locations where there were no signs of fuel leakage, soot or coke formation, loosen and re-torque the B-nuts as follows: CAU T I O N : DO THE FOLLOWING STEPS TO ONE B-NUT A T A TIME ON A FUEL SUPPL Y MANIFOLD. LOOSENING MUL TIPLE B-NUTS ON A SINGLE FUEL SUPPL Y MANIFOLD MA Y RESUL T IN THE FUEL SUPPL Y MANIFOLD MOVING OUT OF POSITION RESUL TING IN MISALIGNMENT OF THE B-NUT AND FUEL NOZZLE INTERF ACE. A. Remove the safety cable/ferrule or safety wire from the B-nut. B. Loosen the B-nut to fully disengage threads. C. Apply Engine Oil, PW A 521 (P03-001), to the exposed threads of the fuel nozzle. Include a few drops of oil to the B-nut thrust wire area (apply at the top of the B-nut after hand tightened). 

## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 13 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).D. Use the manifold tube elbows as a second wrenching flat and apply a torque of 250

– 270 lbf-in (28.246

– 30.506 N.m) to the B-nut. N OT E : The torque value for the fuel supply tube B-nut connection at the fuel injector supply manifold is not being revised (see Figure 6). E. Install Safety Cable, PN AS3510-0218C, and Safety Ferrule, PN AS3510-02F, or Safety Wire, PN AS3214-02, to the B-nut. 5. Install all hardware/components that were removed to gain access to the fuel injector supply manifold(s) and fuel injector(s) as specified in Reference (3), Engine Manual. 6. Perform post-requisite checks/tests as specified in Reference (3), Engine Manual.



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 14 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).Pa rt D ( Fo r E n g i n es I n -S h o p th at a re d i sasse m b l ed ) U se th e f o l l owi n g ste ps wh e n i n sta l l i n g re p l ace m e n t fu e l n ozzl es a n d fu e l s u p p ly m a n if o l d s N OT E : This Part is for engines that will be assembled. An increased torque value at the fuel supply manifold to fuel injector B-nut is used that has not been updated in the Reference (3) Engine Manual at this time. 1. Apply Engine Oil, PW A 521 (P03-001), to the threads of the fuel supply manifold B-nuts. Include a few drops of oil to the B-nut thrust wire area (apply at the top of the B-nut after hand tightened). 2. Use the manifold tube elbows as a second wrenching flat and apply a torque of 250

– 270 lbf-in (28.246

– 30.506 N.m) to the B-nut. N OT E : The torque value for the fuel supply tube B-nut connection at the fuel injector supply manifold is not being revised (see Figure 6). 3. Install Safety Cable, PN AS3510-0218C and Safety Ferrule, PN AS3510-02F or Safety Wire, PN AS3214-02, to the B-nut.



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 15 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).Pa rt E ( Fo r Asse m b l ed E n g i n es Of f

-Wi n g with re p l ace m e n t fu e l n ozzl es a n d fu e l s u p p ly m a n if o l d s i n sta l l ed a n d th e e n g i n e h as n ot bee n ru n ) Re-to rq u e (24 ) fu e l n ozzl e to fu e l s u p p ly m a n if o l d co n n ecti o n i n te r face B

- n u ts

. N OT E : This Part is for assembled spare engines that have ZERO CYCLES since replacement fuel nozzles and fuel supply manifolds were installed without incorporating the increased torque value. 1. Remove necessary hardware/components to gain access to all (24) fuel injector supply manifold B-nut connections to the fuel injectors as specified in Reference (3) Engine Manual. CAU T I O N : DO THE FOLLOWING STEPS TO ONE B-NUT A T A TIME ON A FUEL SUPPL Y MANIFOLD. LOOSENING MUL TIPLE B-NUTS ON A SINGLE FUEL SUPPL Y MANIFOLD MA Y RESUL T IN THE FUEL SUPPL Y MANIFOLD MOVING OUT OF POSITION RESUL TING IN MISALIGNMENT OF THE B-NUT AND FUEL NOZZLE INTERF ACE. 2. For all (24) locations, loosen and re-torque the B-nuts as follows: A. Remove the safety cable/ferrule or safety wire from the B-nut. B. Loosen the B-nut to fully disengage threads. C. Apply Engine Oil, PW A 521 (P03-001), to the threads of the fuel nozzle. Include a few drops of oil to the B-nut thrust wire area (apply at the top of the B-nut after hand tightened). D. Use the manifold tube elbows as a second wrenching flat and apply a torque of 250

– 270 lbf-in (28.246

– 30.506 N.m) to the B-nut. N OT E : The torque value for the fuel supply tube B-nut connection at the fuel injector supply manifold is not being revised (see Figure 6). E. Install Safety Cable, PN AS3510-0218C, and Safety Ferrule, PN AS3510-02F, or Safety Wire, PN AS3214-02, to the B-nut. 3. Install all hardware/components that were removed to gain access to the fuel injector supply manifold(s) and fuel injector(s) as specified in Reference (3), Engine Manual. 4. Perform post-requisite checks/tests as specified in Reference (3), Engine Manual.



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 16 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).LOCA TION OF THE FUEL INJECTOR MANIFOLD SUPPL Y TUBES 73-1 1-00 FIGURE 1


## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 17 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).LOCA TION OF THE FUEL NOZZLE AND SUPPORT ASSEMBL Y 73-1 1-00 FIGURE 2


## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 18 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).PHOTO OF B-NUT SOOT/COKE FORMA TION FIGURE 3



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 19 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).PHOTO OF EXTERNAL SOOT/COKE FIGURE 4



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 20 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).LOCA TION OF HARDW ARE THA T MA Y NEED TO BE REMOVED FOR RE-TORQUE OF B-NUTS FIGURE 5 

## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 21 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).FUEL SUPPL Y MANIFOLD TO FUEL NOZZLE INTERF ACE FIGURE 6



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 22 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).Ap pe n d ix Ad d ed D ata I n te rn a l Refe re n ce I nf o rm ati o n
Revision No. Reference Document Origination Original EA14KC803 JRM/JEJ 1 EC14KA063 EC14KA063A JRM/JEJ
Number values shown in parentheses adjacent to U.S. values are International System of units (SI) equivalents. Reference 3, Engine Manual, Chapter/Section 71-00-73 and 72-41-00, Revision 77, dated January 15, 2015 has incorporated the new assembly torque values related to this Service Bulletin.



## l October 10/14 

# PW4G-100-A73-44 REVISION NO. 1

- February 12/15 Page 23 UTC/P&W PROPRIET AR Y INFORMA TION Subject to the restrictions on the cover or first page. Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3).