TASK 72-42-10-040-001 Diffuser Case Assembly And Fittings - Disassemble The Diffuser Case Assembly, Disassembly-001

DMC:V2500-A0-72-42-1000-00A-530A-B|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

All

Common Information

TASK 72-42-10-040-001 Diffuser Case Assembly And Fittings - Disassemble The Diffuser Case Assembly, Disassembly-001

General

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.

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

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

NameManufacturerPart Number / IdentificationQuantityRemark
IAE 1P16004 Handling bracket0AM53IAE 1P160042
IAE 1P16005 Build stand0AM53IAE 1P160051
IAE 1P16173 Lift sling0AM53IAE 1P161731

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-10-040-055 Put the Diffuser Case Assembly in to the Build Stand

    1. Refer to: Figure

    2. Attach a hoist to the IAE 1P16173 Lift sling 1 off.

    3. Attach the lift sling to the rear outer flange of the diffuser case assembly and lift the diffuser case assembly.

    4. Attach the IAE 1P16004 Handling bracket 2 off to the front flange of the diffuser case 180 degrees apart with the five screws from the rear of the diffuser case front flange.

    5. Position the diffuser case assembly in the IAE 1P16005 Build stand 1 off.

    6. Attach the handling brackets to the build stand with the eight work bolts.

    7. Disconnect the lift sling from the diffuser case and move the sling away from the diffuser case assembly.

    8. CAUTION

      TWO PERSONS ARE REQUIRED TO TURN THE DIFFUSER CASE ASSEMBLY IN THE BUILD STAND.

      Turn the diffuser case assembly so the front flange is up.

    2. SUBTASK 72-42-10-040-051 Remove the No. 4 Bearing Pressure Tube

    1. Refer to: Figure

    2. Remove the thrust wire and the coupling nut from the outer end of the pressure tube.

    3. Remove the bolts, the retaining plate, the sealing sleeve and the gasket from over the outer end of the pressure tube.

    4. Discard the gasket.

    5. Take the No. 4 bearing pressure tube out of the inside of the diffuser case.

    6. Remove and discard the three seal rings from the grooves on the tube.

    3. SUBTASK 72-42-10-040-052-A00 Remove the Turbine Cooling Air Duct Sensing Tube (Pre SBE 72-0166)

    1. Refer to: Figure

    2. Remove the nut assembly and the tube union.

    3. Remove the thrust wire from the coupling nut at the OD of the case. Remove the coupling nut and discard the thrust wire.

    4. Remove the bolts, the retaining plate, the sealing sleeve and the gasket from the boss on the OD of the case. Discard the gasket.

    5. Remove the bolts from the inner flange of the outer sensing tube at the ID of the case and remove the retaining tube from the case. Discard the gasket.

    6. Remove and discard the seal rings from the end of the outer tube.

    4. SUBTASK 72-42-10-040-052-B00 Remove the Sensing Tube Covers (SBE 72-0166)

      SBE 72-0166: (Part 1) Remove the turbine cooling air duct sensing tubes

    1. Refer to: Figure

    2. Remove the three bolts and the sensing tube outer cover from the boss on the diffuser case.

    3. Remove and discard the gasket.

    4. Remove the two bolts and the sensing tube inner cover from the boss on the diffuser case.

    5. Remove and discard the gasket.

    5. SUBTASK 72-42-10-040-053 Remove the No. 4 Bearing Weep Tube

    1. Refer to Figure.

    2. Remove the thrust wire from the tube nut at OD of the case and remove the tube nut.

    3. Remove the bolts from the retaining plate and remove the retaining plate, the sealing sleeve and the gasket. Discard the gasket.

    4. Remove the No. 4 bearing weep tube from the pad on the ID of the diffuser case. Discard the gasket.

    5. Remove and discard the seal rings from the groove on the tube.

    6. SUBTASK 72-42-10-040-054 Remove the Diffuser Case Assembly from the Build Stand

    1. Refer to: Figure

    2. Attach a hoist to the IAE 1P16173 Lift sling 1 off.

    3. Attach the sling to the front flange of the diffuser case assembly at equally spaced locations.

    4. Remove the 10 bolts that attach the IAE 1P16004 Handling bracket 2 off to the diffuser case assembly.

    5. Remove the diffuser case assembly from the build stand using the sling and the hoist.

    6. Put the diffuser case assembly on a pallet.

    7. Remove the sling and the hoist.

    7. Figure: Remove the No. 4 Bearing Pressure Tube

    Remove the No. 4 Bearing Pressure Tube

    Figure: Remove the No. 4 Bearing Weep Tube

    Remove the No. 4 Bearing Weep Tube

    Figure: Pre SBE 72-0166: Remove the Turbine Cooling Air Duct Sensing Tube

    Pre SBE 72-0166: Remove the Turbine Cooling Air Duct Sensing Tube

    Figure: SBE 72-0166 Part 1: Remove Sensing Tube Covers

    SBE 72-0166 Part 1: Remove Sensing Tube Covers

    Figure: Install/Remove the Diffuser Case Assembly to/from the Build Stand

    Install/Remove the Diffuser Case Assembly to/from the Build Stand

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
Manufacturer Code:0AM53
Tool Number:IAE 1P16005
Tool Name:IAE 1P16005 Build stand
Manufacturer Code:0AM53
Tool Number:IAE 1P16173
Tool Name:IAE 1P16173 Lift sling