TASK 72-50-53-840-001 Turbine Exhaust Case (TEC) - Remove The Turbine Exhaust Case Fairing - Rework-001 - SBE 72-0192

DMC:V2500-A0-72-50-5301-00A-933A-C|Issue No:002.00|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 72-50-53-840-001 Turbine Exhaust Case (TEC) - Remove The Turbine Exhaust Case Fairing - Rework-001 - SBE 72-0192

Effectivity

FIG/ITEM

PART NO.

21-300

2A2620-01

General

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

Refer to the indicated Service Bulletin for specific application requirements.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
JT-8715 High Speed Grinder Or EquivalentLOCALJT-8715 High Speed Grinder Or Equivalent

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-062 MASKING TAPE0AM53CoMat 02-062
CoMat 02-261 PLASTIC SHEETS, FLEXIBLELOCALCoMat 02-261
CoMat 02-262 CARDBOARDLOCALCoMat 02-262
CoMat 02-263 GRINDING WHEELLOCALCoMat 02-263
CoMat 02-264 SHEET, METALLOCALCoMat 02-264
CoMat 02-063 MASKING TAPE0AM53CoMat 02-063

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-53-350-116 Make and Install Protective Covers

      1. Make a low pressure turbine (LPT) protective cover from CoMat 02-261 PLASTIC SHEETS, FLEXIBLE.

      1. Refer to Figure.

      2. Attach the LPT protective cover as follows:

      1. Refer to Figure.

    3. Push the cover through the struts.

    4. Install the cover at the interface of the LPT and the turbine exhaust case in the position shown in the figure.

    5. Tape the cover to the turbine exhaust case at the inner and outer diameters and tape the split in the cover.

    6. NOTE

      If the cover is made in two halves, install the cover as shown in Figure . Form a complete ring and tape both splits in the cover.

      Apply CoMat 02-062 MASKING TAPE to protect the instrumented strut leading edges.

    7. Install covers made from CoMat 02-262 CARDBOARD for protection on all strut leading edges.

    8. Apply the necessary masking to cover the exhaust cone flange opening.

      9. Make a turbine exhaust case protective guard with CoMat 02-264 SHEET, METAL.

      1. Make the guard so that the contour is the same as the surface it will touch on the turbine exhaust case. Refer to Figure.

    2. SUBTASK 72-50-53-320-110 Grind the Rivets that Attach the Fairing to the Turbine Exhaust Case

      1. Install the turbine exhaust case guard next to the rivet that you will grind.

      1. Refer to Figure.

    2. Move the guard as necessary and grind each rivet until all the rivets are ground.

      3. CAUTION

        DO NOT DAMAGE THE TURBINE EXHAUST CASE WHILE YOU REMOVE THE FAIRING. DAMAGE CAN RESULT IN ENGINE REMOVAL.
        DO NOT DAMAGE THE LPT BLADES OR THE OUTER AIR SEALS WHILE YOU REMOVE THE FAIRING. DAMAGE CAN RESULT IN ENGINE REMOVAL.

        Bend the fairing toward the center of the turbine exhaust case.

      1. Refer to Figure and Figure.

    4. Start at the manufactured break in the fairing.

    5. Use the applicable guards for protection of the engine parts.

    6. Pry the fairing inboard, approximately 45 degrees in relation to the centerline of the case.

      7. Grind the rivet heads at 32 locations.

    8. CAUTION

      KEEP THE GRINDING WHEEL AWAY FROM THE STRUTS.
      USE A GRINDING WHEEL AS SHOWN IN Figure TO MINIMIZE THE RISK OF DAMAGE TO THE LOW PRESSURE TURBINE AND THE TURBINE EXHAUST CASE.

      Use a guard for protection and to prevent damage to the wall of the turbine exhaust case.

    9. Do not grind through the fairing.

    3. SUBTASK 72-50-53-350-117 Remove the Fairing

      1. Pull the fairing away from the ground rivet.

      1. Start at the manufactured break.

    2. Pull the fairing rearward through the struts.

      3. Bend the fairing as necessary and cut it into pieces that are small enough to remove.

      1. Use shears to cut the fairing into pieces.

      4. Remove all unwanted material from the engine gas path.

      1. Use a vacuum to clean the area.

    5. Remove the masking tape from all locations.

    4. SUBTASK 72-50-53-350-118 Identify the Turbine Exhaust Case Assembly with the New Part Number

      1. Mark through the old part number and mark the new part number adjacent to the existing part number. Use the vibration peen method.

      1. NUMBER BEFORE - 2A2620-01.

        NEW NUMBER - 2A3111-01.

    5. Figure: Mark the low pressure turbine (LPT) cover

    Mark the low pressure turbine (LPT) cover

    Figure: Install the low pressure turbine (LPT) cover and thestrut leading edge protection

    Sheet 1

    Legend
    Install the low pressure turbine (LPT) cover and thestrut leading edge protection

    Sheet 1

    Close

    Figure: Install the low pressure turbine (LPT) cover and thestrut leading edge protection

    Install the low pressure turbine (LPT) cover and thestrut leading edge protection

    Figure: Install the low pressure turbine (LPT) cover and thestrut leading edge protection

    Sheet 3

    Legend
    Install the low pressure turbine (LPT) cover and thestrut leading edge protection

    Sheet 3

    Close

    Figure: Make the turbine exhaust case guard

    Make the turbine exhaust case guard

    Figure: Location of the turbine exhaust case fairing

    Location of the turbine exhaust case fairing

    Figure: Grind to remove the turbine exhaust case fairing

    Sheet 1

    Legend
    Grind to remove the turbine exhaust case fairing

    Sheet 1

    Close

    Figure: Grind to remove the turbine exhaust case fairing

    Grind to remove the turbine exhaust case fairing

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:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:0AM53
Supply Number:CoMat 02-062
Type:sp01
Supply Short Name:CoMat 02-062 MASKING TAPE
Supply Name:CoMat 02-062 MASKING TAPE
Specification Groups:
Doc NumberType
DELETED
Suppliers:
ManufacturerRemarks
0AM53
Manufacturer Code:0AM53
Supply Number:CoMat 02-063
Type:sp01
Supply Short Name:CoMat 02-063 MASKING TAPE
Supply Name:CoMat 02-063 MASKING TAPE
Suppliers:
ManufacturerRemarks
0AM53
Manufacturer Code:LOCAL
Supply Number:CoMat 02-261
Type:sp01
Supply Short Name:CoMat 02-261 PLASTIC SHEETS, FLEXIBLE
Supply Name:CoMat 02-261 PLASTIC SHEETS, FLEXIBLE
Specification Groups:
Doc NumberType
0.CoMat 020-0.040IN THICK (0.51-1.CoMat 02MM)
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:LOCAL
Supply Number:CoMat 02-262
Type:sp01
Supply Short Name:CoMat 02-262 CARDBOARD
Supply Name:CoMat 02-262 CARDBOARD
Specification Groups:
Doc NumberType
CARDBOARD
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:LOCAL
Supply Number:CoMat 02-263
Type:sp01
Supply Short Name:CoMat 02-263 GRINDING WHEEL
Supply Name:CoMat 02-263 GRINDING WHEEL
Specification Groups:
Doc NumberType
A80-OB11/STRAIGHT (TYPE 1) AW125M
Suppliers:
ManufacturerRemarks
LOCAL
06565
44197
Manufacturer Code:LOCAL
Supply Number:CoMat 02-264
Type:sp01
Supply Short Name:CoMat 02-264 SHEET, METAL
Supply Name:CoMat 02-264 SHEET, METAL
Specification Groups:
Doc NumberType
0.CoMat 020-0.040IN THICK (0.51-1.CoMat 02MM)
Suppliers:
ManufacturerRemarks
LOCAL
8M212
0FGC3
Manufacturer Code:LOCAL
Tool Number:JT-8715 High Speed Grinder Or Equivalent
Tool Name:JT-8715 High Speed Grinder Or Equivalent