TASK 72-50-53-300-087 Turbine Exhaust Case (TEC) - Weld Repair A Damaged Front Outer Flange Boltholes And Locating Pinhole, Repair-087 (VRS3804)

DMC:V2500-A1-72-50-5301-03A-627A-C|Issue No:002.00|Issue Date:2019-11-01

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-A1

Common Information

TASK 72-50-53-300-087 Turbine Exhaust Case (TEC) - Weld Repair A Damaged Front Outer Flange Boltholes And Locating Pinhole, Repair-087 (VRS3804)

Effectivity

FIG/ITEM

PART NO.

02-300

4B8060

02-300A

4B8068

Material of component

PART IDENT

SYMBOL

MATERIAL

Turbine Exhaust Case

-

Corrosion and heat resistant steel

General

NOTE

  1. To identify the consumable materials refer to the PCI.

  2. Other consumable materials are given in the SPM.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

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 72-50-53-350-219 Prepare the Areas for Weld

    1. Prepare the repair area for weld by mechanically cleaning area for bright metal finish. Use a rotary austenitic stainless steel wire brush or silicon carbide abrasive wheel.

    2. SUBTASK 72-50-53-110-189 Clean the Areas to be Welded

      1. Clean the surfaces to be welded fully and the adjacent heat effected area.

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

    3. SUBTASK 72-50-53-230-145 Fluorescent Penetrant Inspection of the Full Turbine Exhaust Case

      1. Do a fluorescent penetrant inspection of the turbine exhaust case.

      1. Refer to the SPM TASK 70-23-02-230-501.

        No cracks are permitted.

    4. SUBTASK 72-50-53-310-087 Weld the Damaged Front Outer Flange Boltholes and/or Locating Pinhole

    1. Refer to Figure.

      2. Weld the damaged front outer flange boltholes and/or locating pinhole. Use the Gas Tungsten Arc Weld (GTAW) procedure.

    5. SUBTASK 72-50-53-320-176 Do a Machine Operation of the Weld Area

    1. Refer to Figure.

    2. Do a machine operation of the welded front outer flange boltholes and/or locating pinhole to the dimensions.

    6. SUBTASK 72-50-53-370-104 Remove all the Externals and Oil Tubes

      1. If this procedure was not done before, remove all the externals, oil tubes, helicoils and nut plate details.

      1. Repair, VRS3522 TASK 72-50-53-300-073 (REPAIR-073), SUBTASK 72-50-53-370-078-002.

    7. SUBTASK 72-50-53-370-105 Do a Stress-Relief of the Turbine Exhaust Case (Oven)

      1. Do a stress-relief of the turbine exhaust case in an oven.

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

    8. SUBTASK 72-50-53-320-122 Finish Weld Areas

    1. Refer to Figure.

    2. Finish weld areas as necessary and finish weld must be 0.000 to 0.010 in. (0.00 to 0.25 mm) above parent material on all sides. Do not remove adjacent parent material that is on the part.

    9. SUBTASK 72-50-53-220-268 Hardness Check of the Repaired Area

      1. Do a hardness check in area adjacent to weld repaired area.

      1. Hardness must be Rockwell C30 to 38.

        NOTE

        A coupon of the same alloy and thickness as the weld repaired location is permitted for hardness test. Coupon must be done through the same stress relief cycle as weld repaired area.

    10. SUBTASK 72-50-53-230-146 Fluorescent Penetrant Inspection of the Full Turbine Exhaust Case

      1. Do a fluorescent penetrant inspection of full turbine exhaust case.

      1. Refer to the SPM TASK 70-23-02-230-501.

        No cracks are permitted.

    11. SUBTASK 72-50-53-380-061 Shotpeen the Front Outer Flange

      1. Shotpeen the front outer flange. Mask all the internal cavity openings to prevent entrapment of the shotpeen media.

      1. Refer to the SPM TASK 70-38-13-380-501.

        Use an intensity of 6A and shot type S-230 maximum.

    12. SUBTASK 72-50-53-110-190 Remove the Masks

    1. Refer to Figure.

      2. Remove the remaining tape by solvent wipe procedure.

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

    13. SUBTASK 72-50-53-220-269 Do a Dimensional Inspection of the Turbine Exhaust Case

    1. Refer to Figure.

      2. Do a dimensional inspection of the turbine exhaust case.

      1. Refer to TASK 72-50-53-200-003-A00 (INSPECTION/CHECK-003, CONFIG-001).

    14. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised Consumables nomenclature. Revised Subtask title. (Editorial)

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