This document transmits the Initial Issue of Service Bulletin SB-BR700-73-101847. This Service Bulletin can be embodied "In Service" or "At Overhaul/Shop Visit". Service Bulletin Initial Issue Remove Incorporate Reason for change Pages 1 to 21 of the Service Bulletin. Initial Issue.**Printed in Great Britain** May 17/13

BR700 SERIES PROPULSION SYSTEM SERVICE BULLETIN



# SB−BR700−73−101847 Transmittal - Page 1 of 11. Planning Information A. Effectivity BR700-725A1-12 Engines. Prior to Engine Serial Number 25254. Non-Modular. B. Concurrent Requirements
None. C. Reason (1) Problem There is the requirement to introduce a more reliable spill return to fuel pump tube, which is installed between the Fuel Metering Unit (FMU) and the main fuel pump. It is also necessary to introduce a new assembly procedure for the installation of the spill return to fuel pump tube, the FMU and the main fuel pump. (2) Evidence This requirement has been identified during engine test. (3) Substantiation The changes introduced by this Service Bulletin were the subject of satisfactory engineering analysis and tests. This Service Bulletin complies with the applicable engine certification basis. (4) Objective Introduction of this Service Bulletin is designed to maintain reliability. ENGINE FUEL AND CONTROL - EXTERNAL FUEL DISTRIBUTION TUBES AND FITTINGS - INTRODUCTION OF A NEW SPILL RETURN TO FUEL PUMP TUBE MADE FROM A DIFFERENT MATERIAL AND A NEW ASSEMBLY PROCEDURE**Printed in Great Britain**



# SB−BR700−73−101847 Page 1 of 21 May 17/13 May 17/13 Initial Issue(5) Effect of Bulletin on: (a) Operation Not affected. (b) Maintenance Affected (Refer to paragraph 1.O. Other Publications Affected). (c) Overhaul Affected (Refer to paragraph 1.O. Other Publications Affected). (d) Repair Schemes Not affected. (e) Interchangeability Not affected. (f) Fits and Clearances Not affected. D. Description This Service Bulletin introduces a new spill return to fuel pump tube, which is installed between the FMU and the main fuel pump and is made from a different material. This Service Bulletin also introduces a new assembly procedure, which needs to be applied for the installation of the new standard of spill return to fuel pump tube. This new assembly procedure also needs to be applied for the installation of the FMU and the main fuel pump.
NOTE : The new assembly procedure can also be applied for the installation of the old standard of spill return to fuel pump tube. The intention is to replace the existing assembly procedure for the installation of the spill return to fuel pump tube, the FMU and the main fuel pump in the manuals with the new assembly procedure.
NOTE : The Accomplishment Instruction of this Service Bulletin is divided into two INSTRUCTIONs as follows: INSTRUCTION I - Applicable for engines "In Service". INSTRUCTION II - Applicable for engines "At Overhaul/Shop Visit".**Printed in Great Britain**



# SB−BR700−73−101847 Page 2 of 21 May 17/13 May 17/13 Initial IssueE. Compliance
RECOMMENDED It is recommended that this Service Bulletin be accomplished on engines at the next aircraft scheduled maintenance opportunity. F. Approval The technical content of this document is approved under the authority of EASA Design Organisation Approval No. EASA.21J.065. G. Manpower Estimated Man-hours: (1) In Service 3 hours. (2) At Overhaul/Shop Visit Applicable (Hours not affected). H. Material Price and Availability A modification kit is not required; parts are supplied as single line items. For actual prices and availability of spares, contact: Rolls-Royce Deutschland Ltd & Co KG Spares Business Eschenweg 11, Dahlewitz 15827 Blankenfelde-Mahlow Germany Fax: +49 (0) 33 7086 3028 I. Tooling Price and Availability New tools are not required. J. Industry Support Information The incorporation of this Service Bulletin is free of charge.
NOTE : For further information contact your Rolls-Royce Regional Customer Manager (RCM).**Printed in Great Britain**



# SB−BR700−73−101847 Page 3 of 21 May 17/13 May 17/13 Initial IssueK. Weight and Balance (1) Weight Change
None. (2) Moment Arm No effect. (3) Datum ES2540 (PPS100). L. Electrical Load Data The aircraft electrical load is not affected by this Service Bulletin. M. Software Accomplishment Summary Not applicable. N. References (1) Modification Bulletin 73-101847 Issue 01 dated May 17/13. (2) Aircraft Maintenance Manual, Chapters 70-02-04, 70-10-01, 70-10-02, 70-50-02, 71-00-00, 71-10-00, 73-11-01 and 73-21-03. (3) Engine Manual - E-725-7BR, Chapters 72-00-00, 73-11-01 and 73-21-03. (4) Standard Practices Manual - SP-700-BR, Chapters 70-12-02, 70-12-04 and 70-51-00. (5) Overhaul Materials Manual, Section 2. O. Other Publications Affected (1) Illustrated Parts Catalog - S-725-7BR, Chapter 73-12-05. (2) Aircraft Maintenance Manual, Chapters 73-11-01 and 73-21-03. (3) Engine Manual - E-725-7BR, Chapters 72-71-00, 73-11-01 and 73-21-03. P. Interchangeability of Parts Affected (Refer to paragraph 2.F. Instruction/Disposition Codes).**Printed in Great Britain**



# SB−BR700−73−101847 Page 4 of 21 May 17/13 May 17/13 Initial Issue2. Material Information A. Parts required to accomplish this Service Bulletin (In addition to Parts in 2.B., 2.C. and 2.E.)
IPC Fig/Item No. New Part No. Unit Price (US Dollars) Qty Per Eng. Key Word Old Part No. Instructions/ Dispositions

73-12-05 07-100 KH33300 P.O.A. 1 Spill return to fuel pump tube FW64852 (1)

B. Parts to be Reworked
None. C. New Production Parts
None. D. Redundant Parts
None. E. Expendable Parts Refer to the related Manual tasks given in the Accomplishment Instruction of this Service Bulletin. F. Instruction/Disposition Codes (1) The old and new parts are interchangeable, but once the new part has been installed it is not permitted to re-install the old part.**Printed in Great Britain**



# SB−BR700−73−101847 Page 5 of 21 May 17/13 May 17/13 Initial Issue3. Accomplishment Instruction
INSTRUCTION I - APPLICABLE FOR ENGINES "IN SERVICE" A. General
NOTE : In order to reduce the potential for multiple-engine in-flight shutdown, power loss, or other anomaly due to maintenance error, Rolls-Royce Deutschland recommends that Operators avoid performing maintenance on multiple engines installed on the same aircraft at the same time. If it is not possible to avoid maintenance on more than one engine of an aircraft at the same time, Rolls-Royce Deutschland recommends that additional controls are applied in order to ensure that maintenance tasks have been completed as defined.
WARNING : YOU MUST BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE IS STOPPED. THE ENGINE PARTS CAN STAY HOT FOR ALMOST ONE HOUR.
WARNING : DO NOT TOUCH HOT PARTS WITHOUT APPLICABLE GLOVES. HOT PARTS CAN CAUSE AN INJURY. IF YOU GET AN INJURY, PUT IT IN COLD WATER FOR TEN MINUTES AND GET MEDICAL AID.
WARNING : DO NOT LET FUEL STAY ON YOUR SKIN. REMOVE THE FUEL FROM YOUR SKIN WITH SOAP AND WATER. THE FUEL IS POISONOUS AND CAN BE ABSORBED INTO YOUR BODY.
WARNING : YOU MUST USE EYE PROTECTION WHEN YOU CUT THE LOCKWIRE. IF YOU DO NOT OBEY THIS INSTRUCTION, PIECES OF LOCKWIRE CAN HIT YOUR EYES AND CAUSE AN INJURY.
WARNING : DO NOT LET USED LOCKWIRE STAY ON OR NEAR THE ENGINE. USED LOCKWIRE MUST BE DISCARDED IN THE CORRECT CONTAINER. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY TO PERSONS AND/OR DAMAGE TO THE ENGINE CAN OCCUR.
CAUTION : DO NOT LET FUEL FALL ON THE ENGINE. UNWANTED FUEL MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT-FREE CLOTH. THE FUEL CAN CAUSE DAMAGE TO SURFACE PROTECTION AND TO SOME COMPONENTS.
CAUTION : DO NOT PUT FUEL THAT HAS BEEN USED BACK INTO THE FUEL SYSTEM. CONTAMINATION OF THE FUEL CAN CAUSE DAMAGE TO SOME COMPONENTS. (1) Obey all the WARNINGS and CAUTIONS in the procedures that are referred to.**Printed in Great Britain**



# SB−BR700−73−101847 Page 6 of 21 May 17/13 May 17/13 Initial Issue(2) Consumable Materials (a) Refer to the table that follows:
OMAT NO. DESIGNATION 238 Lockwire For the details of the consumable material given in the table above refer to the Aircraft Maintenance Manual, Chapter 70-02-04, PB201. (b) For further consumable materials refer also to the related Manual tasks given in this instruction. (3) Tools and Equipment (a) Refer to the table that follows:
REFERENCE DESIGNATION No Specific Container (Fuel Resistant) (b) For further tools and equipment refer also to the related Manual tasks given in this instruction. (4) Refer to the Aircraft Maintenance Manual, Chapter 70-10-01, PB201 for the procedure to remove and install V-band coupling clamps. (5) Refer to the Aircraft Maintenance Manual, Chapter 70-10-02, PB201 for the procedure to safety threaded parts. (6) Refer to the Aircraft Maintenance Manual, Chapter 70-50-02, PB201 for all torque procedures. B. Get access to the spill return to fuel pump tube that is installed between the Fuel Metering Unit (FMU) and the main fuel pump (1) Open the applicable cowl doors (Refer to the Aircraft Maintenance Manual, Chapter 71-10-00, PB201).**Printed in Great Britain**



# SB−BR700−73−101847 Page 7 of 21 May 17/13 May 17/13 Initial IssueC. Remove the old spill return to fuel pump tube (73-12-05, 07-100), P/N FW64852 that is installed between the FMU and the main fuel pump (Refer to Figure 1)
CAUTION : USE TWO WRENCHES WHEN YOU LOOSEN THE TWO UNION NUTS OF THE SPILL RETURN TO FUEL PUMP TUBE (73-12-05, 07-100). USE ONE WRENCH TO HOLD THE UNION OF THE FMU AND THE OTHER WRENCH TO LOOSEN THE RELEVANT UNION NUT OF THE SPILL RETURN TO FUEL PUMP TUBE (73-12-05, 07-100). USE ONE WRENCH TO HOLD THE UNION OF THE MAIN FUEL PUMP AND THE OTHER WRENCH TO LOOSEN THE RELEVANT UNION NUT OF THE SPILL RETURN TO FUEL PUMP TUBE (73-12-05, 07-100). IF YOU DO NOT DO THIS YOU CAN CAUSE DAMAGE TO THE COMPONENTS. (1) Put a clean fuel resistant container in position below the FMU and the main fuel pump to catch the drained fuel. (2) Cut and remove the lockwire from the union nut that attaches the spill return to fuel pump tube (73-12-05, 07-100) to the FMU. (3) Cut and remove the lockwire from the union nut that attaches the spill return to fuel pump tube (73-12-05, 07-100) to the main fuel pump. (4) Remove the union nut of the spill return to fuel pump tube (73-12-05, 07-100) from the FMU. (5) Remove the union nut of the spill return to fuel pump tube (73-12-05, 07-100) from the main fuel pump. (6) Remove the old spill return to fuel pump tube (73-12-05, 07-100), P/N FW64852 from the engine. D. Send the removed spill return to fuel pump tube to the address that follows: Rolls-Royce North America, Inc. 111C Coleman Blvd. Pooler, GA 31408 USA (1) Clearly identify the removed spill return to fuel pump tube with the engine serial number of the engine where it was removed. (2) Confirm the shipping of the removed spill return to fuel pump tube on the Accomplishment Form on page 21.**Printed in Great Britain**



# SB−BR700−73−101847 Page 8 of 21 May 17/13 May 17/13 Initial IssueE. Install the new spill return to fuel pump tube (73-12-05, 07-100), P/N KH33300 between the FMU and the main fuel pump (Refer to the Aircraft Maintenance Manual, Chapter 73-11-01, PB401 and Chapter 73-21-03, PB401 and to Figure 1 of this Service Bulletin)
CAUTION : USE TWO WRENCHES WHEN YOU TIGHTEN THE TWO UNION NUTS OF THE SPILL RETURN TO FUEL PUMP TUBE (73-12-05, 07-100). USE ONE WRENCH TO HOLD THE UNION OF THE FMU AND THE OTHER WRENCH TO TIGHTEN THE RELEVANT UNION NUT OF THE SPILL RETURN TO FUEL PUMP TUBE (73-12-05, 07-100). USE ONE WRENCH TO HOLD THE UNION OF THE MAIN FUEL PUMP AND THE OTHER WRENCH TO TIGHTEN THE RELEVANT UNION NUT OF THE SPILL RETURN TO FUEL PUMP TUBE (73-12-05, 07-100). IF YOU DO NOT DO THIS YOU CAN CAUSE DAMAGE TO THE COMPONENTS. (1) Loosen the bolts at the clip positions of all fuel tubes which are connected to the FMU. (2) Loosen the bolts at the clip positions of all fuel tubes which are connected to the main fuel pump. (3) Disconnect all remaining fuel tubes from the FMU and replace the seal rings of the disconnected fuel tubes with new seal rings (Refer to the Aircraft Maintenance Manual, Chapter 73-21-03, PB401). (4) Disconnect all remaining fuel tubes from the main fuel pump and replace the seal rings of the disconnected fuel tubes with new seal rings (Refer to the Aircraft Maintenance Manual, Chapter 73-11-01, PB401). (5) Loosen the four bolts (73-21-03, 01-201) that attach the FMU to the FMU mounting plate until the FMU can rotate freely within its limits on the FMU mounting plate. (6) Loosen the nut of the V-band coupling clamp (73-11-01, 01-150) that attaches the main fuel pump to the accessory gearbox drive pad until the main fuel pump can rotate freely within its limits on the accessory gearbox drive pad. (7) Put and hold the new spill return to fuel pump tube (73-12-05, 07-100), P/N KH33300 in position between the FMU and the main fuel pump. (8) Rotate the FMU within its limits on the FMU mounting plate and rotate the main fuel pump within its limits on the accessory gearbox drive pad until the spill return to fuel pump tube (73-12-05, 07-100) is aligned in its correct position without any pre-stressing. (9) Loosely install the union nut of the spill return to fuel pump tube (73-12-05, 07-100) on the FMU. (10) Loosely install the union nut of the spill return to fuel pump tube (73-12-05, 07-100) on the main fuel pump.**Printed in Great Britain**



# SB−BR700−73−101847 Page 9 of 21 May 17/13 May 17/13 Initial Issue(11) Torque the union nut that attaches the spill return to fuel pump tube (73-12-05, 07-100) to the FMU to 47 Nm (420 lbf in.). (12) Torque the union nut that attaches the spill return to fuel pump tube (73-12-05, 07-100) to the main fuel pump to 47 Nm (420 lbf in.). (13) Torque the four bolts (73-21-03, 01-201) that attach the FMU to the FMU mounting plate to 32,2 Nm (285 lbf in.). (14) Torque the nut of the V-band coupling clamp (73-11-01, 01-150) that attaches the main fuel pump to the accessory gearbox drive pad to between 9 and 11 Nm (80 and 98 lbf in.). (15) Connect all remaining fuel tubes to the FMU and torque and safety their bolts and union nuts in accordance with the Aircraft Maintenance Manual (Refer to the Aircraft Maintenance Manual, Chapter 73-21-03, PB401) (a) Make sure that all applicable seal rings of the disconnected fuel tubes have been replaced with new seal rings. (16) Connect all remaining fuel tubes to the main fuel pump and torque and safety their bolts and union nuts in accordance with the Aircraft Maintenance Manual (Refer to the Aircraft Maintenance Manual, Chapter 73-11-01, PB401) (a) Make sure that all applicable seal rings of the disconnected fuel tubes have been replaced with new seal rings. (17) Torque the bolts at the clip positions of all fuel tubes which are connected to the FMU to 4,5 Nm (40 lbf in.). (18) Torque the bolts at the clip positions of all fuel tubes which are connected to the main fuel pump to 4,5 Nm (40 lbf in.). (19) Safety the union nut that attaches the spill return to fuel pump tube (73-12-05, 07-100) to the FMU with lockwire (OMat 238). (20) Safety the union nut that attaches the spill return to fuel pump tube (73-12-05, 07-100) to the main fuel pump with lockwire (OMat 238). (21) Remove the fuel resistant container together with the drained fuel from the engine. F. Make sure that the work area is clean and clear of tools, equipment and other unwanted materials. G. Close the access to the spill return to fuel pump tube (1) Close the cowl doors (Refer to the Aircraft Maintenance Manual, Chapter 71-10-00, PB201).**Printed in Great Britain**



# SB−BR700−73−101847 Page 10 of 21 May 17/13 May 17/13 Initial IssueH. Do engine (Test 1) - wet motor operation leak check (Refer to the Aircraft Maintenance Manual, Chapter 71-00-00, PB501). I. Do engine run leak check (Test 2B) - high-pressure fuel system (Refer to the Aircraft Maintenance Manual, Chapter 71-00-00, PB501). J. Complete the Accomplishment Form on page 21 and send it to Rolls-Royce Deutschland, Service Operations. K. A record of accomplishment is required. Rolls-Royce Deutschland suggests to put an entry into the engine log book (1) Record the incorporation of Service Bulletin SB-BR700-73-101847 in the Engine Service Record. (2) Record the incorporation of Service Bulletin SB-BR700-73-101847 in the Service Bulletins list of the Non-Modular Log Card.**Printed in Great Britain**



# SB−BR700−73−101847 Page 11 of 21 May 17/13 May 17/13 Initial IssueINSTRUCTION II - APPLICABLE FOR ENGINES "AT OVERHAUL/SHOP VISIT" L. General
WARNING : DO NOT LET FUEL STAY ON YOUR SKIN. REMOVE THE FUEL FROM YOUR SKIN WITH SOAP AND WATER. THE FUEL IS POISONOUS AND CAN BE ABSORBED INTO YOUR BODY.
WARNING : YOU MUST USE EYE PROTECTION WHEN YOU CUT THE LOCKWIRE. IF YOU DO NOT OBEY THIS INSTRUCTION, PIECES OF LOCKWIRE CAN HIT YOUR EYES AND CAUSE AN INJURY.
WARNING : DO NOT LET USED LOCKWIRE STAY ON OR NEAR THE ENGINE. USED LOCKWIRE MUST BE DISCARDED IN THE CORRECT CONTAINER. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY TO PERSONS AND/OR DAMAGE TO THE ENGINE CAN OCCUR.
CAUTION : DO NOT LET FUEL FALL ON THE ENGINE. UNWANTED FUEL MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT-FREE CLOTH. THE FUEL CAN CAUSE DAMAGE TO SURFACE PROTECTION AND TO SOME COMPONENTS.
CAUTION : DO NOT PUT FUEL THAT HAS BEEN USED BACK INTO THE FUEL SYSTEM. CONTAMINATION OF THE FUEL CAN CAUSE DAMAGE TO SOME COMPONENTS. (1) Obey all the WARNINGS and CAUTIONS in the procedures that are referred to. (2) Consumable Materials (a) Refer to the table that follows:
OMAT NO. DESIGNATION 238 Lockwire For the details of the consumable material given in the table above refer to the Overhaul Materials Manual. (b) For further consumable materials refer also to the related Manual tasks given in this instruction. (3) Tools and Equipment (a) Refer to the table that follows:
REFERENCE DESIGNATION No Specific Container (Fuel Resistant) (b) For further tools and equipment refer also to the related Manual tasks given in this instruction.**Printed in Great Britain**



# SB−BR700−73−101847 Page 12 of 21 May 17/13 May 17/13 Initial Issue(4) Refer to the Standard Practices Manual, Chapter 70-12-02, PB1/TASK 70-12-02-000-801 for the procedure to remove V-band coupling clamps. (5) Refer to the Standard Practices Manual, Chapter 70-12-02, PB1/TASK 70-12-02-400-801 for the procedure to install V-band coupling clamps. (6) Refer to the Standard Practices Manual, Chapter 70-12-04, PB1/TASK 70-12-04-400-801 for the procedure to safety threaded parts. (7) Refer to the Standard Practices Manual, Chapter 70-51-00, PB1/TASK 70-51-00-400-801 for all torque procedures. M. Get access to the spill return to fuel pump tube that is installed between the Fuel Metering Unit (FMU) and the main fuel pump. N. Remove the old spill return to fuel pump tube (73-12-05, 07-100), P/N FW64852 that is installed between the FMU and the main fuel pump (Refer to Figure 1)
CAUTION : USE TWO WRENCHES WHEN YOU LOOSEN THE TWO UNION NUTS OF THE SPILL RETURN TO FUEL PUMP TUBE (73-12-05, 07-100). USE ONE WRENCH TO HOLD THE UNION OF THE FMU AND THE OTHER WRENCH TO LOOSEN THE RELEVANT UNION NUT OF THE SPILL RETURN TO FUEL PUMP TUBE (73-12-05, 07-100). USE ONE WRENCH TO HOLD THE UNION OF THE MAIN FUEL PUMP AND THE OTHER WRENCH TO LOOSEN THE RELEVANT UNION NUT OF THE SPILL RETURN TO FUEL PUMP TUBE (73-12-05, 07-100). IF YOU DO NOT DO THIS YOU CAN CAUSE DAMAGE TO THE COMPONENTS. (1) Put a clean fuel resistant container in position below the FMU and the main fuel pump to catch the drained fuel. (2) Cut and remove the lockwire from the union nut that attaches the spill return to fuel pump tube (73-12-05, 07-100) to the FMU. (3) Cut and remove the lockwire from the union nut that attaches the spill return to fuel pump tube (73-12-05, 07-100) to the main fuel pump. (4) Remove the union nut of the spill return to fuel pump tube (73-12-05, 07-100) from the FMU. (5) Remove the union nut of the spill return to fuel pump tube (73-12-05, 07-100) from the main fuel pump. (6) Remove the old spill return to fuel pump tube (73-12-05, 07-100), P/N FW64852 from the engine.**Printed in Great Britain**



# SB−BR700−73−101847 Page 13 of 21 May 17/13 May 17/13 Initial IssueO. Send the removed spill return to fuel pump tube to the address that follows: Rolls-Royce North America, Inc. 111C Coleman Blvd. Pooler, GA 31408 USA (1) Clearly identify the removed spill return to fuel pump tube with the engine serial number of the engine where it was removed. (2) Confirm the shipping of the removed spill return to fuel pump tube on the Accomplishment Form on page 21. P. Install the new spill return to fuel pump tube (73-12-05, 07-100), P/N KH33300 between the FMU and the main fuel pump (Refer to the Engine Manual, Chapter 73-11-01, PB301/TASK 73-11-01-000-801 and PB401/TASK 73-11-01-400-801 and Chapter 73-21-03, PB301/TASK 73-21-03-000-801 and PB401/TASK 73-21-03-400-801 and to Figure 1 of this Service Bulletin)
CAUTION : USE TWO WRENCHES WHEN YOU TIGHTEN THE TWO UNION NUTS OF THE SPILL RETURN TO FUEL PUMP TUBE (73-12-05, 07-100). USE ONE WRENCH TO HOLD THE UNION OF THE FMU AND THE OTHER WRENCH TO TIGHTEN THE RELEVANT UNION NUT OF THE SPILL RETURN TO FUEL PUMP TUBE (73-12-05, 07-100). USE ONE WRENCH TO HOLD THE UNION OF THE MAIN FUEL PUMP AND THE OTHER WRENCH TO TIGHTEN THE RELEVANT UNION NUT OF THE SPILL RETURN TO FUEL PUMP TUBE (73-12-05, 07-100). IF YOU DO NOT DO THIS YOU CAN CAUSE DAMAGE TO THE COMPONENTS. (1) Loosen the bolts at the clip positions of all fuel tubes which are connected to the FMU. (2) Loosen the bolts at the clip positions of all fuel tubes which are connected to the main fuel pump. (3) Disconnect all remaining fuel tubes from the FMU and replace the seal rings of the disconnected fuel tubes with new seal rings (Refer to the Engine Manual, Chapter 73-21-03, PB301/TASK 73-21-03-000-801). (4) Disconnect all remaining fuel tubes from the main fuel pump and replace the seal rings of the disconnected fuel tubes with new seal rings (Refer to the Engine Manual, Chapter 73-11-01, PB301/TASK 73-11-01-000-801). (5) Loosen the four bolts (73-21-03, 01-201) that attach the FMU to the FMU mounting plate until the FMU can rotate freely within its limits on the FMU mounting plate. (6) Loosen the nut of the V-band coupling clamp (73-11-01, 01-150) that attaches the main fuel pump to the accessory gearbox drive pad until the main fuel pump can rotate freely within its limits on the accessory gearbox drive pad.**Printed in Great Britain**



# SB−BR700−73−101847 Page 14 of 21 May 17/13 May 17/13 Initial Issue(7) Put and hold the new spill return to fuel pump tube (73-12-05, 07-100), P/N KH33300 in position between the FMU and the main fuel pump. (8) Rotate the FMU within its limits on the FMU mounting plate and rotate the main fuel pump within its limits on the accessory gearbox drive pad until the spill return to fuel pump tube (73-12-05, 07-100) is aligned in its correct position without any pre-stressing. (9) Loosely install the union nut of the spill return to fuel pump tube (73-12-05, 07-100) on the FMU. (10) Loosely install the union nut of the spill return to fuel pump tube (73-12-05, 07-100) on the main fuel pump. (11) Torque the union nut that attaches the spill return to fuel pump tube (73-12-05, 07-100) to the FMU to 47 Nm (420 lbf in.). (12) Torque the union nut that attaches the spill return to fuel pump tube (73-12-05, 07-100) to the main fuel pump to 47 Nm (420 lbf in.). (13) Torque the four bolts (73-21-03, 01-201) that attach the FMU to the FMU mounting plate to 32,2 Nm (285 lbf in.). (14) Torque the nut of the V-band coupling clamp (73-11-01, 01-150) that attaches the main fuel pump to the accessory gearbox drive pad to between 9 and 11 Nm (80 and 98 lbf in.). (15) Connect all remaining fuel tubes to the FMU and torque and safety their bolts and union nuts in accordance with the Engine Manual (Refer to the Engine Manual, Chapter 73-21-03, PB401/TASK 73-21-03-400-801) (a) Make sure that all applicable seal rings of the disconnected fuel tubes have been replaced with new seal rings. (16) Connect all remaining fuel tubes to the main fuel pump and torque and safety their bolts and union nuts in accordance with the Engine Manual (Refer to the Engine Manual, Chapter 73-11-01, PB401/TASK 73-11-01-400-801) (a) Make sure that all applicable seal rings of the disconnected fuel tubes have been replaced with new seal rings. (17) Torque the bolts at the clip positions of all fuel tubes which are connected to the FMU to 4,5 Nm (40 lbf in.). (18) Torque the bolts at the clip positions of all fuel tubes which are connected to the main fuel pump to 4,5 Nm (40 lbf in.). (19) Safety the union nut that attaches the spill return to fuel pump tube (73-12-05, 07-100) to the FMU with lockwire (OMat 238).**Printed in Great Britain**



# SB−BR700−73−101847 Page 15 of 21 May 17/13 May 17/13 Initial Issue(20) Safety the union nut that attaches the spill return to fuel pump tube (73-12-05, 07-100) to the main fuel pump with lockwire (OMat 238). (21) Remove the fuel resistant container together with the drained fuel from the engine. Q. Make sure that the work area is clean and clear of tools, equipment and other unwanted materials. R. Do Test 01 - fuel drains and oil circulation test (Refer to the Engine Manual, Chapter 72-00-00, PB1301/TASK 72-00-00-700-801). S. Do Test 02 - fuel and oil leak test (Refer to the Engine Manual, Chapter 72-00-00, PB1301/TASK 72-00-00-700-802). T. Complete the Accomplishment Form on page 21 and send it to Rolls-Royce Deutschland, Service Operations. U. A record of accomplishment is required. Rolls-Royce Deutschland suggests to put an entry into the engine log book (1) Record the incorporation of Service Bulletin SB-BR700-73-101847 in the Engine Service Record. (2) Record the incorporation of Service Bulletin SB-BR700-73-101847 in the Service Bulletins list of the Non-Modular Log Card.**Printed in Great Britain**



# SB−BR700−73−101847 Page 16 of 21 May 17/13 May 17/13 Initial IssueRemoval and Installation of the Spill Return To Fuel Pump Tube (73-12-05, 07-100) Figure 1 (Sheet 1 of 4)**Printed in Great Britain**



# SB−BR700−73−101847 Page 17 of 21 May 17/13 May 17/13 Initial IssueRemoval and Installation of the Spill Return To Fuel Pump Tube (73-12-05, 07-100) Figure 1 (Sheet 2 of 4)**Printed in Great Britain**



# SB−BR700−73−101847 Page 18 of 21 May 17/13 May 17/13 Initial IssueRemoval and Installation of the Spill Return To Fuel Pump Tube (73-12-05, 07-100) Figure 1 (Sheet 3 of 4)**Printed in Great Britain**



# SB−BR700−73−101847 Page 19 of 21 May 17/13 May 17/13 Initial IssueRemoval and Installation of the Spill Return To Fuel Pump Tube (73-12-05, 07-100) Figure 1 (Sheet 4 of 4)**Printed in Great Britain**



# SB−BR700−73−101847 Page 20 of 21 May 17/13 May 17/13 Initial IssueAccomplishment Form**Printed in Great Britain**



# SB−BR700−73−101847 Page 21 of 21 May 17/13 May 17/13 Initial Issue

# S ERVICE BULLETIN FEEDBACK FORM

M ay 17 / 13 Initial Issue © Rolls

- Royce Deutschlan d Ltd & Co KG SB

- BR700

- 73

- 101847 Page 1 of 1 Printed in Great Britain 

### Please use this form to give feedback on the quality of this Service Bulletin. The input you provide will be used to analyse areas of improvement and to take action to further improvement on the quality of our Service Bulletins. We thank you for the tim e you spent in completing this form. Please rate on a scale of 1 to 5, with 5 being the highest score:

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### Planning Information Section: Material Information Section: Accomplishment Instruction Section:  1.A.  1.I.  2.A.  General  1.B.  1.J.  2.B.  Get Access  1.C.  1.K.  2.C.  Removal/Installation  1.D.  1.L.  2.D.  Inspection  1.E.  1.M.  2.E.  Test  1.F.  1.N.  2.F.  Close the Access  1.G.  1.O.  Log Book Entry  1.H  1.P. Explanatory notes: