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 2
LIST 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 3
1. 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

R Dec.18/14
C. 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.

R issued to revise 1.A.(2) Effectivity to replace Revision 2 of this NMSB was

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

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Page 2

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R Dec.18/14
(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,

R and was re-approved on Nov.27/14. Feb.21/14, Jun.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

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(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

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Page 4

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(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

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(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

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Page 6

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2. 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

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3. 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

R 112013 (refer to Fig.3a and 3b), then proceed to step (21). 102013 or

Printed in Great Britain

RB.211−72−AH673

Page 8

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R Dec.18/14
(7) If the sealing sleeve was manufactured by supplier A and does not have the

R 112013 or the supplier cannot be identified from the marking 102013 or

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

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Page 9

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(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

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Page 10

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(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

R Dec.18/14
Elton 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

R 112013 (refer to Fig.3a and 3b), then proceed to step (18). 102013 or

Printed in Great Britain

RB.211−72−AH673

Page 12

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(7) If the sealing sleeve was manufactured by supplier A and does not have the

R 112013 or the supplier cannot be identified from the marking 102013 or

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).

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(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

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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.

(20) Accomplishment of this Non-Modification Service Bulletin should be

recorded in the engine logbook.

Printed in Great Britain

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Oil Feed Tube (9 o'clock position on the IP Turbine Casing)

Fig.1

Printed in Great Britain

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R

R Sealing Sleeve Identity Markings

R Fig.2 (sheet 1 of 2)

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R

R Sealing Sleeve Identity Markings

R Fig.2 (sheet 2 of 2)

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R

Markings 102013 and 112013 indicates a Supplier A Sealing Sleeve with an Improved

Bore Diameter R

R Fig.3a, 3b

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Assembly of the Microset Replica Kit

Fig.4

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Press fit Luer needle 

onto mixing nozzle

Step 2. 

Locate and twist the mixing 

nozzle onto replicast cartridge 

Install Replica cartridge 

into dispensing gun
Correct Insertion of the Luer Needle into the Clearance Gap being Measured

Fig.5

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R

R Clip Position for 4396 and 4397

R Fig.6a

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Clip Position for 4405 and 4398

Fig.6b

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Example of Microset Replica for Measurement Purposes

Fig.7a

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Example of an Acceptable Microset Replica for Measurement Purposes

Fig.7b

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Union nut surface

Sleeve shoulder surface
This 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

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Procedure 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

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H. 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

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Union 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

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