TASK 72-50-53-300-086 Turbine Exhaust Case (TEC) - Weld Repair The Damage On The Rear Inner Flange, Repair-086 (VRS3799)

DMC:V2500-A0-72-50-5301-04A-627A-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 72-50-53-300-086 Turbine Exhaust Case (TEC) - Weld Repair The Damage On The Rear Inner Flange, Repair-086 (VRS3799)

Effectivity

FIG/ITEM

PART NO.

01-001

4A8014

01-001

4A8025

02-300

4B8060

02-300

4B8068

21-300

2A1209-01

21-300

2A2620-01

21-300

2A3111-01

21-300

2A3183-01

21-300

2A3455-01

21-300

2A4258-01

21-300

2A4263-01

21-300

2A1220-01

21-300

2A3110-01

Material of component

PART IDENT

SYMBOL

MATERIAL

Turbine exhaust case

AMS 5616 stainless steel

General

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Silicon carbide wheelLOCALSilicon carbide wheel
Austenitic stainless steel brushLOCALAustenitic stainless steel brush

Rotary

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-378 WELDING WIRELOCALCoMat 03-378
CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)LOCALCoMat 06-064

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-53-350-217 Blend to Remove Damage in the Turbine Exhaust Case

    1. Refer to Figure and Figure.

      2. Blend to locally remove damage and to make the area smooth.

      1. Refer to the SPM TASK 70-35-21-350-501. Remove the minimum quantity of material.

    2. SUBTASK 72-50-53-230-139 Fluorescent Penetrant Inspection of the Turbine Exhaust Case

    1. Refer to Figure.

      2. Do a local fluorescent penetrant inspection of the case.

    3. SUBTASK 72-50-53-120-063 Clean the Areas of the Turbine Exhaust Case to be Repaired

      1. Prepare the areas to be welded.

      1. Mechanically clean the areas to get a bright metal finish. Use a rotary austenitic stainless steel wire brush or a silicon carbide abrasive wheel.

      2. Clean the surface fully to be welded and the adjacent heat-affected area.

      1. Refer to the SPM TASK 70-11-26-300-503.

    4. SUBTASK 72-50-53-310-085 Weld to Repair the Damage in the Turbine Exhaust Case

    1. Refer to Figure and Figure.

      2. Weld build-up the damaged area.

      1. Use CoMat 03-378 WELDING WIRE and the GTAW method.

        Refer to the SPM TASK 70-31-13-310-501.

    5. SUBTASK 72-50-53-320-174 Machine the Repaired Area of the Turbine Exhaust Case

    1. Refer to Figure.

    2. Restore the bolt holes.

      3. Machine the welded area on the rear inner flange.

      1. Use the face that is on the part as a guide.

        The finished weld must be 0.000 to 0.010 in. (0.00 to 0.25 mm) above the parent material on all sides. The flange must be 0.157 to 0.167 in. (4.00 to 4.24 mm) thick in the repaired area. Do not remove the parent material that is on the part.

    6. SUBTASK 72-50-53-370-102 Stress-Relieve the Turbine Exhaust Case (Locally)

      1. Locally stress relieve the case.

      1. Refer to the SPM TASK 70-37-13-370-501, Cycle 6A.

    7. SUBTASK 72-50-53-220-264 Examine the Turbine Exhaust Case for Hardness

      1. Do a hardness check in the area adjacent to the weld repair.

      1. The hardness must be Rocckwell C30 to 38.

    8. SUBTASK 72-50-53-230-140 Fluorescent Penetrant Inspection of the Turbine Exhaust Case

    1. Refer to Figure and Figure.

      2. Do a local fluorescent penetrant inspection of the case.

    9. SUBTASK 72-50-53-220-265 Examine the Turbine Exhaust Case

      1. Examine the turbine exhaust case.

      1. Refer to TASK 72-50-53-200-000 (INSPECTION/CHECK-000). The length must be 10.029 to 10.049 in. (254.74 to 255.25 mm) at the areas that are repaired locally and not repaired. Refer to Repair, VRS3654 TASK 72-50-53-300-077 (REPAIR-077) if build-up is necessary.

    10. Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Sheet 2

    Legend
    Repair Details and Dimensions

    Sheet 2

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial correction due to conversion

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 03-378
Type:sp01
Supply Short Name:CoMat 03-378 WELDING WIRE
Supply Name:CoMat 03-378 WELDING WIRE
Specification Groups:
Doc NumberType
AMS 5817GREEK ASCOLOY
Suppliers:
ManufacturerRemarks
LOCAL
2R602
55596
58401
Manufacturer Code:X222X
Supply Number:CoMat 06-064
Type:sp01
Supply Short Name:CoMat 06-064FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Supply Name:CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐064 letter suffix material with other CoMat 06‐064 letter suffix materials.Where CoMat 06‐064 is specified with no suffix, use one of the CoMat 06‐064 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Tool Number:Austenitic stainless steel brush
Tool Name:Austenitic stainless steel brush
Manufacturer Code:LOCAL
Tool Number:Silicon carbide wheel
Tool Name:Silicon carbide wheel