DMC:V2500-A0-72-42-0000-00A-530A-B|Issue No:002|Issue Date:2019-08-01

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

All

Common Information

TASK 72-42-00-040-001 Diffuser And Combustion Group - Disassemble The Diffuser And Combustion Group, Disassembly-001

General

Fig./item number 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.

Remove and discard the lockwire before parts are disconnected or removed.

Discard all rubber seal rings, gaskets, cotter pins and seal washers removed in this procedure.

Refer to TASK 72-42-00-990-501 (DESCRIPTION AND OPERATION) for a sectional view of the diffuser case assembly.

NOTE

Special tools are identified in the procedure by the tool primary number.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

Name	Manufacturer	Part Number / Identification	Quantity
IAE 1P16004 Handling bracket	0AM53	IAE 1P16004	2
IAE 1P16005 Build stand	0AM53	IAE 1P16005	1
IAE 1P16044 Lift fixture	0AM53	IAE 1P16044	1
IAE 1P16102 Lift sling	0AM53	IAE 1P16102	1
IAE 1P16103 Alignment fixture	0AM53	IAE 1P16103	1
IAE 1P16107 cover	0AM53	IAE 1P16107	1
IAE 1P16139 Wrench	0AM53	IAE 1P16139	1
IAE 1P16173 Lift sling	0AM53	IAE 1P16173	1
IAE 1P17000 Protective cover	0AM53	IAE 1P17000	1
IAE 1R18500 Extractor	0AM53	IAE 1R18500	1
IAE 1R18824 Extractor	0AM53	IAE 1R18824	1
IAE 1P16108 cover	0AM53	IAE 1P16108

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

1. Remove the protective covers and the plugs on the outer diameter of the diffuser case assembly.
1. Refer to Figure
2. Remove the lockwire from the bolts that hold the P3/T3 sensor to the diffuser case.
3. Remove the bolts which hold the P3/T3 sensor on the diffuser case.
4. Remove the P3/T3 sensor from the diffuser case.
5. Remove the gasket from the boss on the diffuser case.
1. Refer to Figure
2. 1. Put the washers under each bolt.
  2. Use 0.3125-24 UNJF bolts which are 0.928 to 0.948in. (23.57 to 24.08 mm) in length.
  3. Install a washer under each bolt head.
  4. Install the nuts on the bolts.
3. Remove the lockwire from the nuts which hold the fuel nozzle supply manifolds to the fuel distribution valve.
4. WARNING
  DO NOT LET FUEL STAY ON YOUR SKIN. FUEL WHICH DRAINS FROM THE FUEL MANIFOLD CAN CAUSE PROBLEMS WITH YOUR SKIN.
  Disconnect the tube nuts from the fuel distribution valve. Use the IAE 1P16139 Wrench 1 off.
5. While you hold the valve with your hand, remove the bolts which attach the valve to the bracket.
6. Remove the fuel distribution valve.
7. Remove the transfer tubes from the adapters in the fuel distribution valve.
8. Remove the packings from the transfer tubes.
9. Remove the gaskets from the adapters.
10. Remove the adapters from the fuel distribution valve.
11. Remove the packings from the adapters.
12. Remove the work bolts which hold the fuel distribution valve bracket to the flange of the diffuser case and remove the bracket.
1. Refer to Figure
  NOTE
  Not all of the fuel nozzle supply manifolds are connected to flange brackets.
2. Disconnect the nuts and the bolts which hold the fuel nozzle supply manifolds to the brackets and the loop clamps.
3. WARNING
  DO NOT LET FUEL STAY ON YOUR SKIN. FUEL WHICH DRAINS FROM THE FUEL MANIFOLD CAN CAUSE PROBLEMS WITH YOUR SKIN.
  Disconnect the tube nuts at the connection with the fuel nozzles, one at a time.
4. Remove the fuel nozzle supply manifolds, one at a time.
5. Remove the transfer tubes and the gaskets, if present, from the fuel nozzles.
6. Remove the packings from the transfer tubes.
7. Remove the loop clamps from the fuel nozzle supply manifolds.
1. Refer to Figure
2. Remove the lockwire from the bolts which hold the fuel nozzles and the brackets on the diffuser case.
3. Remove the bolts which hold the fuel nozzles and the brackets to the diffuser case.
4. Remove the fuel nozzles and the brackets from the diffuser case.
5. Remove the gaskets from the recesses in the diffuser case.
1. Refer to Figure
  NOTE
  If you did not remove the lockwire from the adapter when you removed the adjacent fuel nozzle, remove it now.
2. 1. Hold the threaded insert, so it will not turn with a wrench.
  2. Turn the igniter plug with a wrench to remove it from the threaded insert.
  3. Do the procedure again to remove the remaining igniter plug.
3. Remove the threaded inserts and the spacers from the diffuser case.
1. Refer to Figure
2. Install 12 work bolts (0.3125-24 x 0.938 in.) and nuts to hold the thrust balance vent tubes at rear inner diffuser case flange.
3. Turn the diffuser case so the front flange is up.
4. 1. Remove the 10 bolts that secure the heatshield to the diffuser case.
  2. Remove the heatshield.
5. 1. Remove the 20 bolts that secure the static seal assembly to the diffuser case.
  2. Install six work bolts in to the six jack screw holes in the static seal assembly.
  3. Turn each bolt one turn in sequence.
  4. Do step E.(3) again until the static seal assembly is free.
  5. Remove the static seal assembly.
6. 1. Put IAE 1R18500 Extractor 1 off in to position.
    Align the lugs on the OGV case with the slots in the extractor. Make sure that the extractor bolts are to the front.
    Push the two rings on to the OGV case until they touch the diffuser case.
    Turn the extractor so that the lugs on the OGV case and the slots in the extractor are not aligned.
  2. Turn the extractor bolts one turn in sequence.
  3. Do step F.(2) again until the OGV case is free.
  4. Remove the OGV case.
  5. Remove the extractor.
1. Refer to Figure
2. Install 12 work bolts (0.3125-24 x 0.938in.) and nuts to hold the thrust balance vent tubes at rear inner diffuser case flange.
3. Turn the diffuser case so the front flange is up.
4. 1. Remove the 30 bolts that secure the static seal assembly to the diffuser case.
  2. Install six work bolts in to the six jack screw holes in the static seal assembly.
  3. Turn each bolt one turn in sequence.
  4. Do step D.(3) again until the static seal assembly is free.
  5. Remove the static seal assembly.
5. 1. Put IAE 1R18500 Extractor 1 off in to position.
    Align the lugs on the OGV case with the slots in the extractor. Make sure that the extractor bolts are to the front.
    Push the two rings on to the OGV case until they touch the diffuser case.
    Turn the extractor so that the lugs on the OGV case and the slots in the extractor are not aligned.
  2. Turn the extractor bolts one turn in sequence.
  3. Do step E.(2) again until the OGV case is free.
  4. Remove the OGV case.
  5. Remove the extractor.
1. Refer to Figure
2. Install 4 work bolts (0.3125-24 x 0.938in.) and nuts to hold the thrust balance vent tubes at the rear inner diffuser case flange.
3. Turn the diffuser case so the front flange is up.
4. 1. Remove the 30 bolts that secure the static seal assembly to the diffuser case.
  2. Install six work bolts into the six jack screw holes in the static seal assembly.
  3. Turn each bolt one turn in sequence.
  4. Do step D.(3) again until the static seal assembly is free.
  5. Remove the static seal assembly.
5. 1. Put IAE 1R18500 Extractor 1 off into position.
    Align the lugs on the OGV case with the slots in the extractor. Make sure that the extractor bolts are to the front.
    Push the two rings onto the OGV case until they touch the diffuser case.
    Turn the extractor so that the lugs on the OGV case and the slots in the extractor are not aligned.
  2. Turn the extractor bolts one turn in sequence.
  3. Do step E.(2) again until the OGV case is free.
  4. Remove the OGV case.
  5. Remove the extractor.
1. Refer to Figure.
2. Install 4 work bolts (0.3125-24 x 0.938 in.) and nuts to hold the thrust balance vent tubes at the rear inner diffuser case flange.
3. Turn the diffuser case so the front flange is up.
4. 1. Remove the 30 bolts that secure the static seal assembly to the diffuser case.
  2. Install six work bolts into the six jack screw holes in the static seal assembly.
  3. Turn each bolt one turn in sequence.
  4. Do step D.(3) again until the static seal assembly is free.
  5. Remove the static seal assembly.
5. 1. Put IAE 1R18824 Extractor 1 off into position.
    Align the lugs on the OGV case with the slots in the extractor. Make sure that the extractor bolts are to the front.
    Push the two rings onto the OGV case until they touch the diffuser case.
    Turn the extractor so that the lugs on the OGV case and the slots in the extractor are not aligned.
  2. Turn the extractor bolts one turn in sequence.
  3. Do step E.(2) again until the OGV case is free.
  4. Remove the OGV case.
  5. Remove the extractor.
1. Refer to Figure
2. Remove the lockwire from both ends of the heatshields on the three No. 4 bearing cooling air tubes and remove the heatshields.
3. Remove the lockwire from the heatshields on the No. 4 bearing oil pressure tube and from the two nuts which hold the heatshields on. Remove the two nuts and the heatshields.
4. Remove the lockwire from the heatshields on the No. 4 bearing oil scavenge tube and from the two nuts which hold the heatshields on. Remove the two nuts and the heatshields.
1. Refer to Figure
2. Remove the lockwire from both ends of the heatshields on the three No. 4 bearing cooling air tubes and remove the heatshields.
3. Remove the lockwire from the heatshields on the No. 4 bearing oil pressure tube and from the two nuts which hold the heatshields on. Remove the two nuts and the heatshields.
4. Remove the lockwire from the two nuts adjacent to the No. 4 bearing oil scavenge tube. Remove the two nuts.
1. Refer to Figure.
2. Remove the lockwire from both ends of the heatshields on the three No. 4 bearing cooling air tubes and remove the heatshields.
3. Remove the lockwire from the heatshields on the No. 4 bearing oil pressure tube and from the two nuts which hold the heatshields on. Remove the two nuts and the heatshields.
4. Remove the lockwire from the two nuts adjacent to the No. 4 bearing oil scavenge tube. Remove the two nuts.
1. Refer to Figure
2. Remove the lockwire from the bolts which hold the No. 4 bearing oil pressure tube to the bearing compartment.
3. Remove the three bolts which hold the No. 4 bearing oil pressure tube to the bearing compartment.
4. Remove the lockwire from the bolts which hold the No. 4 bearing scavenge tube to the bearing compartment.
5. Remove the four bolts which hold the No. 4 bearing scavenge tube to the No. 4 bearing compartment.
1. Refer to Figure
2. Turn the positioning rods of the IAE 1P16103 Alignment fixture 1 off in to the fixture plate.
3. 1. Align the fixture with the offset hole in the front inner flange.
    NOTE
    The alignment fixture will hold the tubes when you remove the No. 4 bearing compartment.
  2. Secure the fixture with the six bolts.
4. Turn the positioning rods of the alignment fixture to hold the tubes in position.
5. Turn the diffuser case so the rear flange is up.
6. Remove the work bolts which hold the thrust balance vent tubes.
1. Refer to Figure
2. Install the IAE 1P16102 Lift sling 1 off on a hoist.
3. Lower the hoist to the outer combustion chamber.
4. Attach the three cables (equally spaced) to the holes nearest the rear of the outer combustion chamber.
  NOTE
  The lift sling will hold the weight of the outer combustion chamber after you remove the doweled end bolts.
5. Lift the hoist until tension is felt on the lift cables.
6. Remove the lockwire from the doweled end bolts.
7. Remove the five doweled end bolts which hold the outer combustion chamber to the diffuser case.
1. Refer to Figure
2. Remove the outer combustion chamber with the hoist and sling which you installed before.
3. Put the outer combustion chamber on a pallet.
4. Remove the hoist and sling.
1. Refer to Figure
2. Remove the lockwire from the connector.
3. Hold the connector with a wrench, so that it will not turn, and remove the cap.
4. Remove the connector.
5. Remove the gaskets from the diffuser case boss.
1. Refer to Figure.
2. Remove the lockwire from the bolts.
3. Remove the bolts and the washers from the Diffuser Case.
1. Refer to Figure
2. Remove the lockwire from the plugs.
3. Remove the plugs from the diffuser case boss.
1. Refer to Figure
2. Remove the lockwire from the plugs.
3. Remove the plugs from the diffuser case boss.
1. Refer to Figure
2. Remove the lockwire from the plugs.
3. Remove the plugs from the diffuser case boss.
1. Refer to Figure and Figure
2. Remove the union.
3. Remove and discard the gasket.
1. Refer to Figure
2. Install the IAE 1P17000 Protective cover 1 off onto the No. 4 bearing face seal.
3. 1. Put the fixture over the No. 4 bearing front compartment.
  2. Lower and attach the fixture to the bearing compartment.
4. Install the four 0.250-28UNJF-3B bolts at the four locations which have equal space between them.
5. Turn the bolts until there is separation between the No. 4 bearing front compartment from the diffuser case with the lift fixture.
6. Remove the No. 4 bearing front compartment on to a pallet.
7. Remove the gaskets from the recesses in the No. 4 bearing front compartment.
8. Remove the IAE 1P16108 cover 1 off from the No. 4 bearing front compartment.
1. Refer to Figure
2. Remove the thrust balance vent tubes.
3. Remove the alignment fixture from the front inner flange of the diffuser case.
1. Refer to Figure
2. Remove the lockwire from the bolts which hold the adapters to the diffuser case.
3. Remove the six bolts which hold the adapters to the diffuser case.
4. Remove the bracket.
5. Remove the two tube adapters.
6. Remove the two transfer tubes.
7. Remove the gaskets from the tube adapter mount pads.
1. Refer to Figure
2. Remove the lockwire from the bolts which hold the cooling tubes to the diffuser case.
3. Remove the three No. 4 bearing outer cooling tubes.
4. Remove the gaskets from the diffuser case mounting pads.
5. Remove the seal rings from the outer cooling tubes.
1. Refer to Figure
2. Remove the three No. 4 bearing inner cooling tubes.
3. Remove the lockwire from the bolts which hold the three sealing sleeves in the diffuser case.
4. Remove the bolts which hold the three sealing sleeves in the diffuser case.
5. Remove the three sealing sleeves and gaskets.
6. Remove the lockwire which holds the heatshields.
7. Remove the heatshields from the inner cooling tubes.
1. Refer to Figure
2. Remove the inner sensing tube from the outer sensing tube.
1. Refer to Figure
2. Remove the inner sensing tube from the outer sensing tube.
1. Refer to Figure
2. Remove the screw and the nut which hold the airframe manifold to the rear inner flange of the diffuser case.
3. Remove the nut and the bolt which hold the loop clamp to the bracket.
4. Remove the bracket and loop clamp from the airframe manifold.
5. Remove the bolts which hold the airframe manifold in the diffuser case.
6. Remove the No. 4 bearing airframe manifold.
7. Remove the gasket from the outer airframe tube.
1. Refer to Figure
2. Remove the screw and the nut which hold the airframe manifold to the rear inner flange of the diffuser case.
3. Remove the nut and the bolt which hold the loop clamp to the bracket.
4. Remove the bracket and loop clamp from the airframe manifold.
5. Remove the bolts which hold the airframe manifold in the diffuser case.
6. Remove the No. 4 bearing airframe manifold.
7. Remove the gasket from the outer airframe tube.
1. Refer to Figure
2. Remove the screw and the nut which hold the airframe manifold to the rear inner flange of the diffuser case.
3. Remove the bolts which hold the airframe manifold in the diffuser case.
4. Remove the No. 4 bearing airframe manifold.
5. Remove the gasket from the outer airframe tube.
1. Refer to Figure
2. Remove the screw and the nut which hold the airframe manifold to the rear inner flange of the diffuser case.
3. Remove the bolts which hold the airframe manifold in the diffuser case.
4. Remove the No. 4 bearing airframe manifold.
5. Remove the gasket from the outer airframe tube.
1. Refer to Figure
2. Remove the screw and the nut which hold the airframe manifold to the rear inner flange of the diffuser case.
3. Remove the bolts which hold the airframe manifold in the diffuser case.
4. Remove the No. 4 bearing airframe manifold.
5. Remove the gasket from the outer airframe tube.
1. Refer to Figure
2. Remove the screw and the nut which hold the airframe manifold to the rear inner flange of the diffuser case.
3. Remove the bolts which hold the airframe manifold in the diffuser case.
4. Remove the No. 4 bearing airframe manifold.
5. Remove the gasket from the outer airframe tube.
1. Refer to Figure
2. Remove the lockwire from the bolts which hold the elbow on the diffuser case.
3. Remove the bolts which hold the elbow to the boss on the diffuser case.
4. Remove the elbow from the diffuser case.
5. Remove the seal ring from the elbow tube connector.
6. Remove the No. 4 bearing scavenge tube gasket.
7. Remove the lockwire from the bolts which hold the sealing sleeve in the diffuser case.
8. Remove the bolts which hold the sealing sleeve in the diffuser case boss.
9. Remove the sealing sleeve from the diffuser case boss.
10. Remove the locks and the gasket from the No. 4 bearing scavenge tube.
11. Remove the two screws which hold the remaining sealing sleeve in the diffuser case boss.
12. Remove the remaining gasket from the inner diameter of the diffuser case boss.
13. Remove the No. 4 bearing scavenge tube.
14. Remove the lockwire which holes the heatshields on the No. 4 bearing scavenge tube.
15. Remove the heatshields from the No. 4 bearing scavenge tube.
1. Refer to Figure
2. 1. Remove the nuts from the three links.
  2. Put the links through three holes, at three equal spaces, in the rear flange of the diffuser case.
  3. Install the nuts on the links.
3. Attach a hoist to the master link on the sling.
4. Put tension on the sling with the hoist.
5. Disconnect the nuts and bolts from the mount brackets.
6. Lift the diffuser case from the build stand with the hoist and the sling.
7. Put the diffuser case on a pallet.
8. Remove the sling and hoist.

Remove the P3/T3 Sensor

Remove the Fuel Distribution Valve

Remove the Fuel Nozzle Supply Manifolds

Remove the Fuel Nozzles

Remove the Igniter Plugs

Remove the Doweled End Bolts

Remove the Outer Combustion Chamber

Pre SBE 72-0221 V2500-A1: Remove the Nut Connector, Plug and Gaskets

Install the Four Bolts and Washers into Diffuser Case Assembly

SBE 72-0221 V2500-A1 and V2500-A5: Remove the Nut Connector, Plug and Gasket

Remove the Heatshields from the No. 4 Bearing Scavenge and Pressure Tubes

Sheet 1

Sheet 2

Sheet 1

Sheet 2

Sheet 1

Sheet 2

Remove the Transfer Tubes and Adapters

Remove the No. 4 Bearing Outer Cooling Tube

Remove the No. 4 Bearing Inner Cooling Tube and Sealing Sleeves

Pre SBE 72-0016, Pre SBE 72-0166 and Pre SBE 72-0221 V2500-A1: Remove the Turbine Cooling Duct Air Sensing Tube and the No. 4 Bearing Airframe Manifold

SBE 72-0016, Pre SBE 72-0166 and Pre SBE 72-0221 V2500-A1 and Pre SBE 72-0166 V2500-A5: Remove the Turbine Cooling Duct Air Sensing Tube and the No. 4 Bearing Airframe Manifold

Pre SBE 72-0016 and Pre SBE 72-0221 V2500-A1 and SBE 72-0166: Remove the No. 4 Bearing Airframe Manifold

SBE 72-0016 72-0166, and 72-0221 V2500-A1 and SBE 72-0166 V2500-A5: Remove the Turbine Cooling Duct Air Sensing Tube and the No. 4 Bearing Airframe Manifold

Remove the No. 4 Bearing Scavenge Tube

Remove the Diffuser Case From the Build Stand

Pre SBE 72-0221 V2500-A1: Remove the Outlet Guide Vane (OGV), the Static Seal Assembly and the Heatshield

SBE 72-0221 V2500-A1 and V2500-A5: Remove the Outlet Guide Vane (OGV) and the Static Seal Assembly

Requirements After Job Completion

Follow-On Conditions

NONE

Manufacturer Code:	0AM53
Enterprise Name:	IAE INTERNATIONAL AERO ENGINES AG
BU Name:	NULL
Building:	SUITE 400
Street:	628 HEBRON AVENUE
City:	GLASTONBURY
State:	CT
Zip Code:	06033
Country:	USA

Manufacturer Code:	0AM53
Tool Number:	IAE 1P16004
Tool Name:	IAE 1P16004 Handling bracket

TASK 72-42-00-040-001 Diffuser And Combustion Group - Disassemble The Diffuser And Combustion Group, Disassembly-001

Export Control

Copyright

Applicability

Common Information

TASK 72-42-00-040-001 Diffuser And Combustion Group - Disassemble The Diffuser And Combustion Group, Disassembly-001

General

NOTE

Preliminary Requirements

Pre-Conditions

Support Equipment

Consumables, Materials and Expendables

Spares

Safety Requirements

Procedure

SUBTASK 72-42-00-040-051 Remove the Protective Covers from the Diffuser Case

SUBTASK 72-42-00-040-058 Remove the P3/T3 Sensor from the Diffuser Case Boss

SUBTASK 72-42-00-040-059 Remove the Fuel Distribution Valve and Bracket

WARNING

SUBTASK 72-42-00-040-060 Remove the Fuel Nozzle Supply Manifolds

NOTE

WARNING

SUBTASK 72-42-00-040-061 Remove the Fuel Nozzles

SUBTASK 72-42-00-040-062 Remove the Igniter Plugs

NOTE

SUBTASK 72-42-00-040-053-A00 V2500-A1: Remove the Stage 12 Stator (Pre SBE 72-0143)

SUBTASK 72-42-00-040-053-B00 V2500-A1: Remove the Stage 12 Stator (SBE 72-0143 and Pre SBE 72-0221)

SUBTASK 72-42-00-040-053-C00 V2500-A1: Remove the Stage 12 Stator (SBE 72-0221)

SUBTASK 72-42-00-040-053-D00 V2500-A5: Remove the Stage 12 Stator

SUBTASK 72-42-00-040-055-A00 V2500-A1: Remove the Heatshields from the Tubes in the No. 4 Bearing Compartment (Pre SBE 72-0004, SBE 72-0087 and Pre SBE 72-0120)

SUBTASK 72-42-00-040-055-B00 V2500-A1: Remove the Heatshields from the Tubes in the No. 4 Bearing Compartment (SBE 72-0004 and SBE 72-0120)

SUBTASK 72-42-00-040-055-C00 V2500-A5: Remove the Heatshields from the Tubes in the No. 4 Bearing Compartment

SUBTASK 72-42-00-040-056 Disconnect the Tubes from the No. 4 Bearing Front Compartment

SUBTASK 72-42-00-040-063 Install the Alignment Fixture

NOTE

SUBTASK 72-42-00-040-064 Remove the Doweled End Bolts that Hold the Combustion Chamber in the Diffuser Case

NOTE

SUBTASK 72-42-00-040-052 Remove the Outer Combustion Chamber

SUBTASK 72-42-00-040-065 Remove the Connector and Cap from the Diffuser Case

SUBTASK 72-42-00-040-077 Remove the Four Bolts and Washers from the Diffuser Case

SUBTASK 72-42-00-040-066-A00 V2500-A1: Remove the Five Plugs and Gaskets from the Diffuser Case (Pre SBE 72-0221)

SUBTASK 72-42-00-040-066-B00 V2500-A1: Remove the Six Plugs and Gaskets from the Diffuser Case (SBE 72-0221)

SUBTASK 72-42-00-040-066-C00 V2500-A5: Remove the Six Plugs and Gaskets from the Diffuser Case

SUBTASK 72-42-00-040-076 Remove the Union and Gasket from the Diffuser Case

SUBTASK 72-42-00-040-067 Remove the No. 4 Bearing Front Compartment from the Diffuser Case

SUBTASK 72-42-00-040-068 Remove the Thrust Balance Vent Tubes

SUBTASK 72-42-00-040-069 Remove the Transfer Tubes and Adapters

SUBTASK 72-42-00-040-070 Remove the No. 4 Bearing Outer Cooling Tubes

SUBTASK 72-42-00-040-071 Remove the No. 4 Bearing Inner Cooling Tube and Sealing Sleeves

SUBTASK 72-42-00-040-072-A00 Remove the Turbine Cooling Air Duct Sensing Tube (Pre SBE 72-0016, Pre SBE 72-0166 and Pre SBE 72-0221)

SUBTASK 72-42-00-040-072-B00 Remove the Turbine Cooling Air Duct Sensing Tube (SBE 72-0016, Pre SBE 72-0166 and Pre SBE 72-0221)

SUBTASK 72-42-00-040-073-A00 V2500-A1: Remove the No. 4 Bearing Airframe Manifold (Pre SBE 72-0016, Pre SBE 72-0166 and Pre SBE 72-0221)

SUBTASK 72-42-00-040-073-B00 V2500-A1: Remove the No. 4 Bearing Airframe Manifold (Pre SBE 72-0016, SBE 72-0166 and Pre SBE 72-0221)

SUBTASK 72-42-00-040-073-C00 V2500-A1: Remove the No. 4 Bearing Airframe Manifold (SBE 72-0016, Pre SBE 72-0166 and Pre SBE 72-0221)

SUBTASK 72-42-00-040-073-D00 V2500-A1: Remove the No. 4 Bearing Airframe Manifold (SBE 72-0016, SBE 72-0166 and SBE 72-0221)

SUBTASK 72-42-00-040-073-E00 V2500-A5: Remove the No. 4 Bearing Airframe Manifold (Pre SBE 72-0166)

SUBTASK 72-42-00-040-073-F00 V2500-A5: Remove the No. 4 Bearing Airframe Manifold (SBE 72-0166)

SUBTASK 72-42-00-040-074 Remove the No. 4 Bearing Scavenge Tube

SUBTASK 72-42-00-040-075 Remove the Diffuser Case from the Build Stand and Put it on a Pallet

Figure: Remove the P3/T3 Sensor

Remove the P3/T3 Sensor

Figure: Remove the Fuel Distribution Valve

Remove the Fuel Distribution Valve

Figure: Remove the Fuel Nozzle Supply Manifolds

Remove the Fuel Nozzle Supply Manifolds

Figure: Remove the Fuel Nozzles

Remove the Fuel Nozzles

Figure: Remove the Igniter Plugs

Remove the Igniter Plugs

Figure: Remove the Doweled End Bolts

Remove the Doweled End Bolts

Figure: Remove the Outer Combustion Chamber

Remove the Outer Combustion Chamber

Figure: Pre SBE 72-0221 V2500-A1: Remove the Nut Connector, Plug and Gaskets

Pre SBE 72-0221 V2500-A1: Remove the Nut Connector, Plug and Gaskets

Figure: Install the Four Bolts and Washers into Diffuser Case Assembly

Install the Four Bolts and Washers into Diffuser Case Assembly

Figure: SBE 72-0221 V2500-A1 and V2500-A5: Remove the Nut Connector, Plug and Gasket

SBE 72-0221 V2500-A1 and V2500-A5: Remove the Nut Connector, Plug and Gasket

Figure: Remove the Heatshields from the No. 4 Bearing Scavenge and Pressure Tubes