TASK 72-00-60-820-002 External Gearbox Components - Convert The TRW Lucas FMU SBE 73-0173 - Rework-002

DMC:V2500-A5-72-00-6050-01A-933A-C|Issue No:001.00|Issue Date:2013-11-01

Export Control

EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.

Copyright

© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).

Applicability

V2500-A5

Common Information

TASK 72-00-60-820-002 External Gearbox Components - Convert The TRW Lucas FMU SBE 73-0173 - Rework-002

Effectivity

FIG/ITEM

PART NO.

01-100

FMU560MK1

01-100

FMU570MK1

General

This TASK gives the re-setting procedure to convert the TRW Lucas FMU part number FMU560MK1 to part number FMU570MK1 and part number FMU570MK1 to part number FMU560MK1.

The practices and processes referred to in the procedure by TASK/SUBTASK number are in the SPM.

Refer to the Service Bulletin SBE 73-0173 for specific application requirements.

Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service bulletin alpha variants refer to the IPC.

Special torque data is identified with the symbol * after the torque value.

For standard torque data and procedures, refer to the SPM TASK 70-41-00-400-501, SPM TASK 70-41-01-400-501 and SPM TASK 70-41-02-410-501 .

For lockwire data refer to the SPM TASK 70-42-05-400-501.

After assembly apply CoMat 07-038 AIR DRYING ENAMEL to any damaged surface protection, joint flanges and attach parts. Use the correct color of air drying enamel. Refer to the SPM TASK 70-38-21-380-501.

NOTE

To identify the consumable materials, refer to the PCI.

NOTE

Refer to TRW Aeronautical Systems - Lucas Aerospace Service Bulletin FMU 550-73-8215

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Standard workshop toolsLOCALStandard workshop tools
Crimping Tool, min. jaw width 0.393in. (10mm)LOCALCrimping Tool, min. jaw width 0.393in. (10mm)

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-126 LOCKWIRELOCALCoMat 02-126
CoMat 07-038 AIR DRYING ENAMELK3504CoMat 07-038

Spares

NONE

Safety Requirements

CAUTION

REFER TO SBE 72-0285 IF THIS SWITCHING TASK IS DONE AS PART OF AN ENGINE RE-RATING EXERCISE. SBE 72-0285 : ENGINE CONVERSION - PROVIDE INSTRUCTIONS TO CHANGE THE V2500-A5 ENGINE RATING BY MODIFYING THE DATA ENTRY PLUG.

Procedure

    1. SUBTASK 72-00-60-820-003 Convert the TRW Lucas FMU Part Number FMU560MK1 to Part Number FMU570MK1

    1. Refer to Figure, Figure, Figure, Figure and Figure.

      2. WARNING

        YOU MUST BE CAREFUL WHEN YOU REMOVE LOCKWIRE. IF YOU PULL LOCKWIRE WITH FORCE FROM A COMPONENT IT CAN CAUSE YOU INJURY.

        CAUTION

        LOCKWIRE FRAGMENTS WILL BE LIBERATED DURING THE REWORK PROCEDURE. ALL SUCH FRAGMENTS MUST BE RECOVERED.

        CAUTION

        YOU MUST NOT EXCEED THE RECOMMENDED TORQUE VALUES. OVER TORQUING CAN RESULT IN DAMAGE TO THE FUEL METERING UNIT (FMU) WHICH MAY NECESSITATE REPLACEMENT OF THE FMU.

        Re-setting procedure.

      1. Disconnect the two lower electrical connectors from the FMU to provide sufficient working space during this procedure. Refer to TASK 72-00-60-050-002-B00 (REMOVAL-006, CONFIG-002).

      2. Before you change the setting make sure that the FMU part number and stop setting letter correctly match each other. Report mismatch to your local quality representative.

        FMU PART NUMBER

        POSITION SETTING LETTER

        FMU560MK1

        O

        FMU570MK1

        X

      3. Check that the secondary latch is not unclipped before you start this procedure. Report mismatch to your local quality representative.

      4. Remove the lockwire and unclip the spring latch from the housing.

      5. CAUTION

        DO NOT USE A SCREWDRIVER WITH A BLADE WIDTH OF MORE THAN 1/2 IN. (13MM) AND A BLADE LENGTH OF MORE THAN 8IN.(200MM).

        NOTE

        You can carefully use the edge of the information plate as a lever edge for the screwdriver.

        Place a flatbladed screwdriver in the slot on the sleeve (visible through the housing window) and move the sleeve up fully.

      6. NOTE

        Turn the exposed hexagon counter clockwise as viewed from the hexagon end of the device.

        Keep the sleeve raised and at the same time use a 5/8 inch wrench to turn the exposed hexagon counterclockwise. After a small amount of turn, you can remove the screwdriver from the sleeve slot.

      7. Continue to rotate the sleeve hexagon in an anti-clockwise (counter clockwise) direction until the device 'clicks' into the alternative setting position.

      8. Check the setting position. Make sure the sleeve hexagon has returned to the fully down position into the housing and the position setting letter X is fully visible in the housing window.

      9. Clip the spring latch down on the housing to safety it.

        10. Safety the spring latch and switchable datum assembly with lockwire.

        1. Use a single piece of CoMat 02-126 LOCKWIRE and wrap the lockwire around the base of the hinge and the base of the spring latch twice. Refer to Figure and Fig. 72-00-60-990-004 .tages 1 to 5.

        2. Make sure that the lockwire tail, length 0.708 in. to 0.866 in. (18 mm to 22 mm) is formed to the right of the maximum flow stop setting display window, stages 5 and 7.

        3. Make sure that the completed wire lock does not move more than 0.08 in. (2.0mm) in a direction which is parallel to the axis of the switchable datum assembly.

        4. Install the ferrule on to the tail of the lockwire to touch the switchable datum assembly, refer to stage 6.

        5. Crimp the ferrule on to the lockwire with a crimping tool which has a minimum jaw width of 0.393 in. (10 mm). Make sure that the thickness of the ferrule between the crimped faces is between 0.110 in. and 0.098 in. (2.8 mm and 2.5 mm).

        6. Bend the lockwire tail back towards the maximum flow stop assembly, refer to stage 7.

        11. Identify the FMU with the correct nameplate.

        1. Remove the lockwire from the retaining screws.

        2. Remove the two nameplate retaining screws and turn the nameplate over to show P/N FMU 570 MK1.

        3. Install the two screws to attach the nameplate to the FMU.

        4. TORQUE the two screws to 20 * lbfin. (2.2 Nm).

        12. Safety the nameplate retaining screws.

        1. Use one piece of CoMat 02-126 LOCKWIRE and safety the two retaining screws to each other.

        2. NOTE

          The requirement to safety the screws with lockwire is to give a visual anti-tamper indication only. The two retaining screws are locked in position with self-locking wire thread inserts.

          Route the lockwire around the screw heads or as shown in Figure.

        3. Cut the lockwire tail to length between 0.708 in. to 0.866 in. (18 mm to 22 mm) from the retaining screw head.

        4. Install the ferrule on to the tail of the lockwire to touch the retaining screw head.

        5. Crimp the ferrule on to the lockwire. Use a crimping tool which has a minimum jaw width of 0.393 in. (10 mm).

        6. Make sure that the thickness of the ferrule between the crimped faces is between 0.110 in. and 0.098 in. (2.8 mm and 2.5 mm).

        7. Bend the lockwire tail towards the head of the retaining screw.

        13. Do the final checks.

        1. Inspect the nameplate, make sure you can see the P/N FMU 570 MK1.

        2. Make sure the stop setting letter X is visible in the housing window.

        3. Make sure the spring latch is locked down and fully engaged on the housing to safety it.

        4. Make sure that the two ferrules are correctly crimped and secure.

        5. Make sure the FMU serial number on the nameplate and modification plate are the same as each other.

    2. SUBTASK 72-00-60-820-004 Convert the TRW Lucas FMU Part Number FMU570MK1 to Part Number FMU560MK1

    1. Refer to Figure, Figure, Figure, Figure and Figure.

      2. WARNING

        YOU MUST BE CAREFUL WHEN YOU REMOVE LOCKWIRE. IF YOU PULL LOCKWIRE WITH FORCE FROM A COMPONENT IT CAN CAUSE YOU INJURY.

        CAUTION

        LOCKWIRE FRAGMENTS WILL BE LIBERATED DURING THE REWORK PROCEDURE. ALL SUCH FRAGMENTS MUST BE RECOVERED.

        CAUTION

        YOU MUST NOT EXCEED THE RECOMMENDED TORQUE VALUES. OVER TORQUING CAN RESULT IN DAMAGE TO THE FUEL METERING UNIT (FMU) WHICH MAY NECESSITATE REPLACEMENT OF THE FMU.

        Re-setting procedure.

      1. Disconnect the two lower electrical connectors from the FMU to provide sufficient working space during this procedure. Refer to TASK 72-00-60-050-002-B00 (REMOVAL-006, CONFIG-002).

      2. Before you change the setting make sure that the FMU part number and stop setting letter correctly match each other. Report mismatch to your local quality representative.

        FMU PART NUMBER

        POSITION SETTING LETTER

        FMU560MK1

        O

        FMU570MK1

        X

      3. Check that the secondary latch is not unclipped before you start this procedure. Report mismatch to your local quality representative.

      4. Remove the lockwire and unclip the spring latch from the housing.

      5. CAUTION

        DO NOT USE A SCREWDRIVER WITH A BLADE WIDTH OF MORE THAN 1/2 IN. (13MM) AND A BLADE LENGTH OF MORE THAN 8IN.(200MM).

        NOTE

        You can carefully use the edge of the information plate as a lever edge for the screwdriver.

        Place a flatbladed screwdriver in the slot on the sleeve (visible through the housing window) and move the sleeve up fully.

      6. NOTE

        Turn the exposed hexagon clockwise as viewed from the hexagon end of the device.

        Keep the sleeve raised and at the same time use a 5/8 inch wrench to turn the exposed hexagon clockwise. After a small amount of turn, you can remove the screwdriver from the sleeve slot.

      7. Continue to rotate the sleeve hexagon in a clockwise direction until the device 'clicks' into the alternative setting position.

      8. Check the setting position. Make sure the sleeve hexagon has returned to the fully down position into the housing and the position setting letter O is fully visible in the housing window.

      9. Clip the spring latch down on the housing to safety it.

        10. Safety the spring latch and switchable datum assembly with lockwire.

        1. Use a single piece of CoMat 02-126 LOCKWIRE and wrap the lockwire around the base of the hinge and the base of the spring latch twice. Refer to Figure and Fig. 72-00-60-990-004 stages 1 to 5.

        2. Make sure that the lockwire tail, length 0.708 in. to 0.866 in. (18 mm to 22 mm) is formed to the right of the maximum flow stop setting display window, stages 5 and 7.

        3. Make sure that the completed wire lock does not move more than 0.08 in. (2.0 mm) in a direction which is parallel to the axis of the switchable datum assembly.

        4. Install the ferrule on to the tail of the lockwire to touch the switchable datum assembly, refer to stage 6.

        5. Crimp the ferrule on to the lockwire with a crimping tool which has a minimum jaw width of 0.393 in. (10 mm). Make sure that the thickness of the ferrule between the crimped faces is between 0.110 in. and 0.098 in. (2.8 mm and 2.5 mm).

        6. Bend the lockwire tail back towards the maximum flow stop assembly, refer to stage 7.

        11. Identify the FMU with the correct nameplate.

        1. Remove the lockwire from the retaining screws.

        2. Remove the two nameplate retaining screws and turn the nameplate over to show P/N FMU 560 MK1.

        3. Install the two screws to attach the nameplate to the FMU.

        4. TORQUE the two screws to 20 * lbfin. (2.2 Nm).

        12. Safety the nameplate retaining screws.

        1. Use one piece of CoMat 02-126 LOCKWIRE and safety the two retaining screws to each other.

        2. NOTE

          The requirement to safety the screws with lockwire is to give a visual anti-tamper indication only. The two retaining screws are locked in position with self-locking wire thread inserts.

          Route the lockwire around the screw heads or as shown in Figure.

        3. Cut the lockwire tail to length between 0.708 in. to 0.866 in. (18 mm to 22 mm) from the retaining screw head.

        4. Install the ferrule on to the tail of the lockwire to touch the retaining screw head.

        5. Crimp the ferrule on to the lockwire. Use a crimping tool which has a minimum jaw width of 0.393 in. (10 mm).

        6. Make sure that the thickness of the ferrule between the crimped faces is between 0.110 in. and 0.098 in. (2.8 mm and 2.5 mm).

        7. Bend the lockwire tail towards the head of the retaining screw.

        13. Do the final checks.

        1. Inspect the nameplate, make sure you can see the P/N FMU 560 MK1.

        2. Make sure the stop setting letter O is visible in the housing window.

        3. Make sure the spring latch is locked down and fully engaged on the housing to safety it.

        4. Make sure that the two ferrules are correctly crimped and secure.

        5. Make sure the FMU serial number on the nameplate and modification plate are the same as each other.

    3. SUBTASK 72-00-60-420-210 Reconnect Electrical Harness

    1. Connect the two lower electrical connectors to the FMU. Refer to TASK 72-00-60-450-002-B00 (INSTALLATION-006, CONFIG-002).

    4. Figure: TRW Lucas FMU Ajust the Max. Fuel Flow Stop

    TRW Lucas FMU Ajust the Max. Fuel Flow Stop

    Figure: TRW Lucas FMU Ajust the Max. Fuel Flow Stop

    TRW Lucas FMU Ajust the Max. Fuel Flow Stop

    Figure: TRW Lucas FMU Ajust the Max. Fuel Flow Stop

    TRW Lucas FMU Ajust the Max. Fuel Flow Stop

    Figure: TRW Lucas FMU Ajust the Max. Fuel Flow Stop

    TRW Lucas FMU Ajust the Max. Fuel Flow Stop

    Figure: TRW Lucas FMU Ajust the Max. Fuel Flow Stop

    TRW Lucas FMU Ajust the Max. Fuel Flow Stop

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:K3504
Enterprise Name:INDESTRUCTIBLE PAINT CO LTD
BU Name:NULL
Street:25 PENTOS DRIVE
City:SPARKHILL
Province:BIRMINGHAM
Zip Code:B11 3TA
Country:GREAT BRITAIN
Phone Number:44-121-7022485
Fax Number:44-121-7784338
Email:sales@indestructible.co.uk
Internet:www.indestructible.co.uk
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:K6835
Supply Number:CoMat 02-126
Type:sp01
Supply Short Name:CoMat 02-126 LOCKWIRE
Supply Name:CoMat 02-126 LOCKWIRE
Specification Groups:
Doc NumberType
DTD 189A, 0.028 TO 0.032 IN DIA
Suppliers:
ManufacturerRemarks
K6835
KB362
LOCAL
U06C8
Manufacturer Code:00BB6
Supply Number:CoMat 07-038
Type:sp01
Supply Short Name:CoMat 07-038 AIR DRYING ENAMEL
Supply Name:CoMat 07-038 AIR DRYING ENAMEL
Specification Groups:
Doc NumberType
OMAT:7/22B (RR REF)IP9138 R1
JCR-029 (JAEC REF)
Suppliers:
ManufacturerRemarks
00BB6
K3504
Manufacturer Code:LOCAL
Tool Number:Crimping Tool, min. jaw width 0.393in. (10mm)
Tool Name:Crimping Tool, min. jaw width 0.393in. (10mm)
Manufacturer Code:LOCAL
Tool Number:Standard workshop tools
Tool Name:Standard workshop tools