All pages of Appendix 2 Pages 1 to 3 of Appendix 2 Revised 3. Accomplishment Instructions to improve accuracy of identity markings shown in Fig.2 and Fig.3. 1.C. Description and 1.E. Approval also updated.**Printed in Great Britain**



# RB.211−72−AH673 Transmittal - Page 2LIST OF EFFECTIVE PAGES The effective pages to this Service Bulletin following incorporation of Revision 3 are as follows: Page Revision Number Revision Date

Bulletin R 1 3 Dec.18/14 R 2 3 Dec.18/14 R 3 3 Dec.18/14 R 4 3 Dec.18/14 R 5 3 Dec.18/14 R 6 3 Dec.18/14 R 7 3 Dec.18/14 R 8 3 Dec.18/14 R 9 3 Dec.18/14 R 10 3 Dec.18/14 R 11 3 Dec.18/14 R 12 3 Dec.18/14 R 13 3 Dec.18/14 R 14 3 Dec.18/14 R 15 3 Dec.18/14 R 16 3 Dec.18/14 R 17 3 Dec.18/14 R 18 3 Dec.18/14 R 19 3 Dec.18/14 R 20 3 Dec.18/14 R 21 3 Dec.18/14 R 22 3 Dec.18/14 R 23 3 Dec.18/14 R 24 3 Dec.18/14 R 25 3 Dec.18/14 Appendix 1 R 1 3 Dec.18/14 Appendix 2 R 1 3 Dec.18/14 R 2 3 Dec.18/14 R 3 3 Dec.18/14**Printed in Great Britain**



# RB.211−72−AH673 Transmittal - Page 31. Planning Information A. Effectivity Airbus A330 RB211 TRENT 768, TRENT 772, TRENT 772B, TRENT 772C Engines as follows: (1) Engine Serial Numbers from 41693 to ESN 42330, with the following exceptions: 42310, 42311, 42312, 42314, 42315, 42316, 42317, 42321, 42322, 42323, 42324, 42325, 42326, 42327, 42329. (2) Engines which are fitted with a Module 51 (IP Turbine Module) which has been reworked to a Check and Repair or higher level workscope for which the induction date was between 1st July 2009 and 31st October 2013.
B. Reason There have been a total of nine unplanned engine removals due to high oil consumption, caused by fracture of the HP/IP turbine support internal oil feed tube (EIPC 72-51-24, 02-281) on engines post SB 72-F227 standard. Two of these engine removals have occurred since initial issue of this NMSB. The oil feed tube threaded end adaptor and sealing sleeve are designed to form a sliding joint. If the sliding joint is restrained then the oil feed tube can become compressed during thermal contraction of the turbine casing at the end of the flight cycle. On each subsequent flight, the thermal growth and contraction of the turbine casing relative to the oil tube, during the heating and cooling phases of the flight cycle, applies a pull-push load cycle to the tube, which leads to low cycle fatigue fracture. Investigation of the oil feed tube sealing sleeve (EIPC 72-51-23, 01-220) has found that one of the three different suppliers of this part (Supplier A) has manufactured some sealing sleeves with the internal diameter below the drawing minimum, which can cause binding at the sliding joint. Investigation of the supply history of the sealing sleeve has identified a population of engines which have potentially been fitted with a sleeve which was manufactured by Supplier A, which might have an unacceptable internal diameter. ENGINE - HP/IP TURBINE BEARING SUPPORT - INSPECTION AND REPLACEMENT OF THE OIL FEED TUBE SEALING SLEEVE - NON-MODIFICATION SERVICE BULLETIN - NON - MOD.72-AH673**Printed in Great Britain**



# RB.211−72−AH673 Page 1 of 25 Jan 30/14 Dec.18/14 RC. Description This Non-Modification Service Bulletin (NMSB) instructs visual inspection of manufacturing markings on the sealing sleeve, to identify whether the sealing sleeve was manufactured by Supplier A. If the sealing sleeve was manufactured by Supplier A, the NMSB instructs the application of replicating compound to enable measurement of the cold clearance between the HP/IP external oil feed tube long reach nut and the sealing sleeve,followed by replacement of the oil feed tube sealing sleeve with a part which has been manufactured with an increased minimum internal diameter, to ensure there is a cold clearance fit at the sliding joint. It is only necessary to carry out the action once in accordance with this NMSB either on-wing or in-shop. The replica will be measured by Rolls-Royce and if any further action is required this will be recommended separately. Return the Replica to your Rolls-Royce service Representative, together with the sealing sleeve and the completed Appendix 1. This NMSB supersedes NMSB 72-H526, which has been cancelled. Revision 1 of this NMSB was issued to correct 1.A. effectivity to replace ESN 42626 with ESN 42326. Revision 2 of this NMSB was R issued to revise 1.A.(2) Effectivity to replace 31st August 2013 with 31st October 2013 and to revise 1.D Compliance to replace Recommended with Alert. Revision 3 of this NMSB is issued to improve the accuracy of the descriptions of different supplier's identity markings shown in Fig.2 and Fig.3. R R D. Compliance
ALERT This Non-Modification Service Bulletin is anticipated to be the subject of an EASA/FAA Airworthiness Directive. (1) On-wing (a) Engines Installed: Carry out the actions detailed in 3.A. Accomplishment Instructions at the next convenient maintenance opportunity and within 12 months of the initial issue of this NMSB. (b) Engines not Installed: Carry out the actions detailed in 3.A. Accomplishment Instructions prior to installation.**Printed in Great Britain**



# RB.211−72−AH673 Page 2 Jan 30/14 Dec.18/14 R(2) In-shop Engines undergoing any level of shop visit: Carry out the actions detailed in 3.B. Accomplishment Instructions.
NOTE : Inspection of the sealing sleeve and replicating of the clearance gap must be carried out prior to engine disassembly. Replacement of the sealing sleeve may be carried out during engine assembly. E. Approval The technical content of this Non-Modification Service Bulletin was approved under the authority of Design Organisation Approval EASA.21J.035 on Jan.21/14, Feb.21/14, Jun.27/14 R and was re-approved on Nov.27/14. F. Manpower (1) On-wing: (a) Time to gain access 6 hours including engine cooling time
NOTE : The 6 hour cool down period is only required if a replica must be taken. If a replica is not required, a minimum one hour cool down time is required. (b) Time to inspect the sealing sleeve to confirm the batch number 0.25 hours (1 person) (c) Time to assemble Microset Replica Kit, to produce a test piece, inject the Microset replica compound into the gap to be measured and allow the replica material to cure 1 hour (1 person) (d) Time to disconnect the external HP/IP oil feed tube and remove the Microset replica material. 0.25 hours (1 person) (e) Time to replace the sealing sleeve 0.25 hours (1 person) (f) Time to reconnect the external oil feed tube and restore to a serviceable condition 0.5 hours (1 person)**Printed in Great Britain**



# RB.211−72−AH673 Page 3 Jan 30/14 Dec.18/14 R(g) Ground running requirement Fuel and oil leak test
NOTE : The leak test is only required if the oil feed tube is disconnected. (2) In-shop (a) Time to inspect the sealing sleeve to confirm the batch number 0.25 hours (1 person) (b) Time to assemble Microset Replica Kit, to produce a test piece, inject the Microset replica compound into the clearance gap to be measured and allow the replica compound to cure: 1 hour (1 person) (c) Time to disconnect the external HP/IP oil feed tube and remove the Microset replica material. 0.25 hours (1 person) G. Material Price and Availability All materials required to accomplish NMSB 72-H673 are detailed in section 2. Material Information H. Tooling Price and Availability (1) Microset replicating kit (2) Torque wrench (up to 1500 lbfin.) (3) Tooling/Consumables required for oil tube cutting procedure (Appendix 2): (a) HU40179-1 (b) Portable electric drill - 230 RPM (c) Pipe cutting tool or tube cropping tool (swarf-free cutting process) (locally supplied) (d) Vacuum cleaner - with 8mm diameter suction hose (locally supplied) (e) Engine Oil (OMat 1011)**Printed in Great Britain**



# RB.211−72−AH673 Page 4 Jan 30/14 Dec.18/14 R(4) Tooling required for sealing sleeve removal (a) Impact extractor HU29255 with extraction adaptor HU45296
Or (b) Facom U.49P6 expansion puller dia 18mm - 60mm Facom U.53H3 expansion puller adaptor Facom U.49AM slide hammer
Or (c) Locally sourced equivalent hand tools (d) Adjustable grips (locally supplied) (e) Adjustable spanner (locally supplied) I. References (1) Rolls-Royce RB211 Service Bulletins: (a) 72-F227 Engine - HP/IP Bearing Support - Introduction of an HP/IP Turbine Bearings Support Structure with revised Oil and Air Service Tubes and Associated Insulated Heatshield Covers (b) 79-D102 Oil - Oil System Tubes and Fittings - Core Engine - Introduction of revised HP/IP Turbine Structure Oil Tubes (2) Rolls-Royce RB211 Non-Modification Service Bulletin: 72-H526 Engine - HP/IP Bearing Support - Measurement of Cold Clearance at Oil Feed Tube Sealing Sleeve Position - Non-Modification Service Bulletin (3) Aircraft Maintenance Manual: (a) 71-00-00-700-802, Test 2 - Fuel and Oil Leak Test (b) 70-51-00, Torque Tightening Techniques (c) 70-12-04-910-804, Locking Techniques - Wire Locking (d) 78-30-00-010-803A, Open the Thrust Reverser Cowl Doors**Printed in Great Britain**



# RB.211−72−AH673 Page 5 Jan 30/14 Dec.18/14 R(e) 78-30-00-410-803A, Close the Thrust Reverser Cowl Doors (4) Engine Manual: 72-00-00, Test 2 - Fuel and Oil Leak Test (5) Standard Practices Manual 70-51-00, Procedures used to Torque Tighten Components (6) 70-12-04, Procedures Used to Lock Threaded Parts - LOCK THREADED PARTS**Printed in Great Britain**



# RB.211−72−AH673 Page 6 Jan 30/14 Dec.18/14 R2. Material Information A. The following parts are required to accomplish this NMSB:

EIPC, Fig/Item Part No. Qty Description Mat
79-22-49, 02-100 FW14193 1 External Oil Feed Tube - 72-51-23, 01-220 FW15003 1 Oil Feed Sealing Sleeve -

NOTE : 1. The replacement external oil feed tube is only required if the original tube is cut off in accordance with Appendix 2. 2. The replacement sealing sleeve must be identified with engraving 102013, 112013 or 102013L**Printed in Great Britain**



# RB.211−72−AH673 Page 7 Jan 30/14 Dec.18/14 R3. Accomplishment Instructions A. On-wing

WARNING : YOU MUST BE CAREFUL WHEN YOU WORK ON THE ENGINE AFTER THE ENGINE IS SHUTDOWN. THE ENGINE CAN STAY HOT FOR ALMOST ONE HOUR.
WARNING : YOU MUST NOT TOUCH HOT PARTS WITHOUT APPLICABLE GLOVES. HOT PARTS CAN CAUSE INJURY. IF YOU GET AN INJURY, PUT IT IN COLD WATER FOR 10 MINUTES. THEN GET MEDICAL AID.
CAUTION : IN ORDER TO REDUCE THE POTENTIAL FOR MULTIPLE ENGINE EVENTS DUE TO MAINTENANCE ERROR, ROLLS-ROYCE 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 AT THE SAME TIME, ROLLS-ROYCE RECOMMENDS THAT ADDITIONAL CONTROLS ARE APPLIED IN ORDER TO ENSURE THAT MAINTENANCE TASKS HAVE BEEN COMPLETED AS DEFINED. MAINTENANCE GUIDELINES SHOULD BE REVISED, WHERE POSSIBLE, TO PROMOTE THIS RECOMMENDATION. (1) Gain access: (a) Open the thrust reverser cowl doors in accordance with Aircraft Maintenance Manual, 78-30-00. (b) Locate the oil feed tube (P/N FW14193) and oil feed tube sealing sleeve (P/N FW15003) at the 9 o'clock position when looking from the rear of the engine. Refer to Fig.1. (2) Inspect the safety cable (or lockwire) securing the HP/IP external oil feed tube (P/N FW14193) union nut, to the sealing sleeve (P/N FW15003) and record the condition of the safety cable in Appendix 1. (3) Remove the safety cable (or lockwire) from the oil feed tube union nut. (4) Inspect the markings on the sealing sleeve (P/N FW15003) in-situ, to determine whether the sleeve was manufactured by supplier A, B or C. Refer to Fig 2a, 2b, 2c, 2d. (5) If the sealing sleeve was manufactured by supplier B or C then proceed to step (21). (6) If the sealing sleeve was manufactured by supplier A and is also marked 102013 or R 112013 (refer to Fig.3a and 3b), then proceed to step (21).**Printed in Great Britain**



# RB.211−72−AH673 Page 8 Jan 30/14 Dec.18/14 R(7) If the sealing sleeve was manufactured by supplier A and does not have the marking 102013 or R 112013 or the supplier cannot be identified from the sleeve markings then continue with the next step.
NOTE : If NMSB 72-H526 has already been completed on this engine then replicating the clearance gap is not required, proceed to step (12). (8) Assemble the Microset replica kit, Refer to Fig.4. (9) Apply pressure to the Microset dispensing gun trigger, to eject replica polymer from the end of the Luer needle, to produce a test piece measuring approximately 5 cubic millimeters. The test piece is required to enable the hardness of the replica to be determined during the curing process.
NOTE : Do not inject excessive replicating polymer material (10) Insert the Luer needle into the gap between the sealing sleeve (P/N FW15003) and the external oil feed tube union nut (P/N UP11943), until it can go no further, then withdraw the Luer needle 1 mm. Refer to Fig.5. Apply pressure to the Microset dispensing gun trigger, to inject replicating compound into the clearance gap. One full action of the dispensing gun trigger will supply sufficient replicating material. Then fully withdraw the Luer needle. (11) Allow the replica compound 30 minutes to cure. Check that the test piece has fully cured. If the test piece has not fully cured then leave the replica for a further 10 minutes to cure fully. Repeat this process until the test piece has cured.
CAUTION : DO NOT EXCEED 1500 LBF/IN TORQUE WHEN DISCONNECTING THE UNION NUT. EXCEEDING THIS TORQUE VALUE MAY DAMAGE THE INTERNAL OIL TUBE NOTE : Based on previous service experience, the HP/IP oil feed tube union nut is not susceptible to seizure. If the union nut cannot be disconnected, carry out the union nut cutting procedure in Appendix 2 to remove the union nut. (12) Disconnect the oil tube union nut at the IP turbine casing. Measure the union nut break torque and record this value in Appendix 1.**Printed in Great Britain**



# RB.211−72−AH673 Page 9 Jan 30/14 Dec.18/14 R(13) Loosen the external feed tube clips and in-line connector, to allow the external oil tube to be moved away from the internal feed tube. If necessary to improve access for removal of the replica, remove the clips at positions 4405, 4396, 4397 and 4398 and disconnect the in-line connector, to allow the external tube to be removed. Refer to Fig.6a and Fig.6b.
NOTE : If NMSB 72-H526 has already been completed on this engine then proceed to step (16). (14) Carefully remove the replica from the oil feed tube sealing sleeve, and assess the quality of the replica. For measurement, the replica must have filled the clearance gap between the end-face of the union nut and sealing sleeve shoulder over at least a quarter of the circumference. Refer to Fig.7a and Fig.7b. (15) If the replica is unacceptable for measurement then refit the external oil feed tube and assemble the clips at positions 4405, 4396, 4397 and 4398 if the clips were removed. Refer to Fig.6a and Fig.6b. Torque the tube connector to IP turbine case to 27 Nm (240 lbfin.). Then repeat steps (8) through to step (14). (16) Remove the two bolts that secure the sealing sleeve (P/N FW15003) to the IP turbine casing. (17) Remove the sealing sleeve from the IP turbine casing: (a) Insert the expansion puller into the sealing sleeve and adjust the expansion puller using an adjustable spanner and adjustable grips to secure the expansion puller to the sleeve. Refer to 1.H. Tooling Price and Availability. (b) Assemble the expansion puller and slide hammer. (c) Using the slide hammer, carefully remove the sleeve. (18) Install a new sealing sleeve (P/N FW15003) with marking 102013, 112013 or 102013L to the IP turbine casing. Confirm that the sleeve can be fitted by hand without the need for tooling to push it into place. (19) Install the two bolts that secure the sealing sleeve to the IP turbine casing. Torque the two bolts to 40 lbf.in (0.45 m.daN).**Printed in Great Britain**



# RB.211−72−AH673 Page 10 Jan 30/14 Dec.18/14 R(20) Install the external oil feed tube. If the external oil tube (P/N FW14193) was completely removed at step (13), then loosely fit the tube in-line connector and union nut at the IP turbine casing, and assemble the clips at positions 4405, 4396, 4397 and 4398. Refer to Fig.6a and Fig.6b.
NOTE : The correct procedure for torque tightening the tube connectors is provided by AMM 70-51-00. This task instructs a sequence of torque tightening the union nut, then releasing it half a turn, and repeating several times, to make sure correct bedding of the union. (a) Torque the tube connector to the oil tube to 33 Nm (295 lbfin.). (b) Torque the tube connector to IP turbine case to 27 Nm (240 lbfin.). (c) Torque the clip bolts at clip positions 4405, 4396, 4397 and 4398 to 6,2 Nm (55 lbfin.).
NOTE : Lockwire is recommended in preference to safety cable, to give the necessary freedom of movement between the oil tube and IPT casing. (21) Safety the union nut with OMat 238 lockwire, Ref AMM Standard Practices 70-12-04-910-804. (22) Restore the engine to a serviceable condition: (a) Close the thrust reverser cowl doors in accordance with Aircraft Maintenance Manual 78-30-00. (b) Carry out the fuel and oil leak test in accordance with AMM 71-00-00, Test 2, Fuel and Oil Leak Test.
NOTE : 1. It is particularly important that developer is applied around each disturbed tube union, and examined carefully after the test. 2. The leak test is only required if the oil feed tube was disconnected during this procedure. (23) Clearly label any sleeve removed or replica taken with the engine serial number and return the following to your Rolls-Royce Service Representative, or directly to Derby to the following address: Intertek Metallurgy Lab C/o Rolls-Royce Plc Mail Code ELT 14**Printed in Great Britain**



# RB.211−72−AH673 Page 11 Jan 30/14 Dec.18/14 RElton Road PO Box 31 Derby DE24 8BJ Mark the package: For the attention of Sohidul Khalique Extn - 40098 (a) The completed Appendix 1. (b) If the sealing sleeve is replaced then return the removed sealing sleeve. (c) If a Microset replica has been taken, then place the replica into the sample container provided with the replica kit and return the replica. (24) Accomplishment of this Non-Modification Service Bulletin should be recorded in the engine logbook. B. In-shop

NOTE : This procedure must be carried out before engine strip. (1) Locate the oil feed tube (EIPC 79-22-49, 02-100) at the 9 o'clock position when looking from the rear of the engine. Refer to Fig.1. (2) Inspect the safety cable (or lockwire) securing the HP/IP external oil feed tube (EIPC 79-22-49, 02-241) union nut, to the sealing sleeve (EIPC 72-51-23, 01-220) and record the condition of the safety cable in Appendix 1. (3) Remove the safety cable (or lockwire) from the oil feed tube union nut. (4) Inspect the markings on the oil feed sealing sleeve (EIPC 72-51-23, 01-220) in-situ, to determine whether the sleeve was manufactured by supplier A, B or C. Refer to Fig.2a, 2b, 2c and 2d. (5) If the sealing sleeve was manufactured by supplier B or C then proceed to step (18). (6) If the sealing sleeve was manufactured by supplier A and is also marked 102013 or R 112013 (refer to Fig.3a and 3b), then proceed to step (18).**Printed in Great Britain**



# RB.211−72−AH673 Page 12 Jan 30/14 Dec.18/14 R(7) If the sealing sleeve was manufactured by supplier A and does not have the marking 102013 or R 112013 or the supplier cannot be identified from the sleeve markings then continue with the next step.
NOTE : If NMSB 72-H526 has already been completed on this engine then it is not necessary to take a replica. Proceed with step (12). (8) Assemble the Microset replica kit, Refer to Fig.4. (9) Apply pressure to the Microset dispensing gun trigger, to eject replica polymer from the end of the Luer needle, to produce a test piece measuring approximately 5 cubic millimeters. The test piece is required to enable the hardness of the replica to be determined during the curing process.
NOTE : Do not inject excessive replicating polymer material. (10) Insert the Luer needle into the gap between the sealing sleeve (EIPC 72-51-23, 01-220) and the external oil feed tube union nut (EIPC 79-22-49, 02-241), until it can go no further, then withdraw the Luer needle 1 mm. Refer to Fig.5. Apply pressure to the Microset dispensing gun trigger, to inject replicating compound into the clearance gap. One full action of the dispensing gun trigger will supply sufficient replicating material. Then fully withdraw the Luer needle. (11) Allow the replica compound 30 minutes to cure. Check that the test piece has fully cured. If the test piece has not fully cured then leave the replica for a further 10 minutes to cure fully. Repeat this process until the test piece has cured.
CAUTION : DO NOT EXCEED 1500 LBF/IN TORQUE WHEN DISCONNECTING THE UNION NUT. EXCEEDING THIS TORQUE VALUE MAY DAMAGE THE INTERNAL OIL TUBE NOTE : Based on previous service experience, the HP/IP oil feed tube union nut is not susceptible to seizure. If the union nut cannot be disconnected, carry out the union nut cutting procedure in Appendix 2 to remove the union nut. (12) Disconnect the oil tube union nut at the IP turbine casing. Measure the union nut break torque and record this value in Appendix 1. (13) Loosen the external feed tube clips and in-line connector, to allow the external oil tube to be moved away from the internal feed tube. If necessary to improve access for removal of the replica, remove the clips at positions 4405, 4396, 4397 and 4398 and disconnect the in-line connector, to allow the external tube to be removed. Refer to Fig.6a and Fig.6b.
NOTE : If NMSB 72-H526 has already been completed on this engine then proceed to step (16).**Printed in Great Britain**



# RB.211−72−AH673 Page 13 Jan 30/14 Dec.18/14 R(14) Carefully remove the replica from the oil feed tube sealing sleeve, and assess the quality of the replica. The replica must have filled the clearance gap between the nut end-face and sealing sleeve shoulder over at least a quarter of the circumference. Refer to Fig.7a and Fig.7b. (15) If the replica is unacceptable for measurement then refit the external oil feed tube and assemble the clips at positions 4405, 4396, 4397 and 4398 if the clips were removed. Refer to Fig.6a and Fig.6b. Torque the tube connector to IP turbine case to 27 Nm (240 lbfin.) Then repeat steps (8) through to step (14). (16) Remove the sealing sleeve from the IP turbine casing: (a) Insert the expansion puller into the sealing sleeve and adjust the expansion puller using an adjustable spanner and adjustable grips to secure the expansion puller to the sleeve. Refer to 1.H. Tooling Price and Availability. (b) Assemble the expansion puller and slide hammer. (c) Using the slide hammer, carefully remove the sleeve. (17) During module or engine assembly install a new sealing sleeve (EIPC 72-51-23, 01-220) with the marking 102013, 112013 or 102013L to the IP turbine casing. Confirm that the sleeve can be fitted by hand without the need for tooling to push it into place. (18) When the engine is reassembled, install the external oil feed tube: (a) Install the external oil feed tube in accordance with Engine Manual procedures.
NOTE : Lockwire is recommended in preference to safety cable, to give the necessary freedom of movement between the oil tube and IPT casing. (b) Safety the external oil feed tube union nut with OMat 238 lockwire, Ref Standard Practices Manual SPM 70-12-04-400-000. (19) Clearly label any sleeve removed or replica taken with the engine serial number and return the following to your Rolls-Royce Service Representative, or directly to Derby to the following address: Intertek Metallurgy Lab C/o Rolls-Royce Plc Mail Code ELT 14 Elton Road**Printed in Great Britain**



# RB.211−72−AH673 Page 14 Jan 30/14 Dec.18/14 RPO Box 31 Derby DE24 8BJ Mark the package: For the attention of Sohidul Khalique Extn - 40098 (a) The completed Appendix 1. (b) If the sealing sleeve is replaced then return the removed sealing sleeve. (c) If a Microset replica has been taken, then place the replica into the sample container provided with the replica kit and return the replica. (20) Accomplishment of this Non-Modification Service Bulletin should be recorded in the engine logbook.**Printed in Great Britain**



# RB.211−72−AH673 Page 15 Jan 30/14 Dec.18/14 ROil Feed Tube (9 o'clock position on the IP Turbine Casing) Fig.1**Printed in Great Britain**



# RB.211−72−AH673 Page 16 Jan 30/14 Dec.18/14 RR

Sealing Sleeve Identity Markings R Fig.2 (sheet 1 of 2) R**Printed in Great Britain**



# RB.211−72−AH673 Page 17 Jan 30/14 Dec.18/14 RR

Sealing Sleeve Identity Markings R Fig.2 (sheet 2 of 2) R**Printed in Great Britain**



# RB.211−72−AH673 Page 18 Jan 30/14 Dec.18/14 RR

Markings 102013 and 112013 indicates a Supplier A Sealing Sleeve with an Improved Bore Diameter R Fig.3a, 3b R**Printed in Great Britain**



# RB.211−72−AH673 Page 19 Jan 30/14 Dec.18/14 RAssembly of the Microset Replica Kit Fig.4**Printed in Great Britain**



# RB.211−72−AH673 Page 20 Jan 30/14 Dec.18/14 R Press fit Luer needle onto mixing nozzle Step 2. Locate and twist the mixing nozzle onto replicast cartridge Install Replica cartridge into dispensing gunCorrect Insertion of the Luer Needle into the Clearance Gap being Measured Fig.5**Printed in Great Britain**



# RB.211−72−AH673 Page 21 Jan 30/14 Dec.18/14 RR

Clip Position for 4396 and 4397 R Fig.6a R**Printed in Great Britain**



# RB.211−72−AH673 Page 22 Jan 30/14 Dec.18/14 RClip Position for 4405 and 4398 Fig.6b**Printed in Great Britain**



# RB.211−72−AH673 Page 23 Jan 30/14 Dec.18/14 RExample of Microset Replica for Measurement Purposes Fig.7a**Printed in Great Britain**



# RB.211−72−AH673 Page 24 Jan 30/14 Dec.18/14 RExample of an Acceptable Microset Replica for Measurement Purposes Fig.7b**Printed in Great Britain**



# RB.211−72−AH673 Page 25 Jan 30/14 Dec.18/14 R 

### Union nut surface

Sleeve shoulder surfaceThis form (or similar) is to be completed for every HP/IP oil feed tube clearance measurement. Results are to be sent along with the replica for measurement to Rolls-Royce, via your Service Representative.

Information Feedback for NMSB 72-H673
Date of Inspection

Operator
Engine Serial Number
Engine Cycles Since New
Engine Hours Since New

Module 51 Serial Number
Condition assessment of safety cable OMat 2/142 * Delete as appropriate Good Condition / Broken
* Delete as appropriate Fig.2a - Sealing sleeve Supplier A Fig.2b - Sealing sleeve Supplier B Issue 1 Fig.2c - Sealing sleeve Supplier B Issue 2 Fig.2d - Sealing sleeve Supplier C Batch Number:

Torque required to loosen the external oil feed tube nut
Assessment of replica APPENDIX 1**Printed in Great Britain**



# RB.211−72−AH673 Appendix 1 - Page 1 of 1 Jan 30/14 Dec.18/14 RProcedure for Cutting off a Seized Union Nut 1. Effectivity A. This procedure is applicable to the external HP/IP Turbine Oil Tube Post SB 79-D102 standard. 2. Description of Procedure The procedure cuts through the thrust shoulder of the union nut. This removes the axial load from the union nut threads, which reduces the torque required to unscrew the nut. The union nut and external tube are destroyed in the procedure. The depth stop on the cutting tool prevents the cutting tool from making contact with the internal oil tube end fitting, so the internal oil tube is not damaged by this procedure. 3. Tools and Consumables Refer to 1.H. Tooling Prices and Availability 4. Material Requirements Refer to 2. Material Information 5. Procedure A. Disconnect the external oil tube connector and all tube clips. B. Cut the external tube a maximum length of 30 mm from the union nut, refer to Fig.8. Use a manual pipe cutting tool or a cropping tool to avoid making any cutting debris. C. If the tool is open ended, close the end of the cut tube using a temporary bung, to prevent ingress of contamination. D. Lubricate the shoulder of the union nut with clean engine oil.
CAUTION : WHEN THE CUTTING TOOL BREAKS THROUGH THE UNION NUT SHOULDER, THE NUT CAN TURN WITH THE CUTTING TOOL. WHEN THIS HAPPENS, STOP CUTTING IMMEDIATELY, BECAUSE IF THE NUT IS ROTATED THROUGH SEVERAL TURNS, THE CUTTING TOOL CAN MAKE CONTACT WITH THE INTERNAL OIL TUBE END FITTING E. Cut through the shoulder of the union nut, using the hole cutting tool and the electric drill. F. Remove all swarf, using the vacuum cleaner. G. Remove the union nut, Do not allow any debris to drop into the open end of the internal oil tube. APPENDIX 2**Printed in Great Britain**



# RB.211−72−AH673 Appendix 2 - Page 1 of 3 Jan 30/14 Dec.18/14 RH. Clean the internal oil tube end fitting. Inspect the end fitting to confirm that there is no damage.**Printed in Great Britain**



# RB.211−72−AH673 Appendix 2 - Page 2 Jan 30/14 Dec.18/14 RUnion Nut Cutting Tool Shown in-situ on the HP/IP Turbine External Oil Tube Fig.8**Printed in Great Britain**



# RB.211−72−AH673 Appendix 2 - Page 3 Jan 30/14 Dec.18/14 R