TASK 72-50-21-300-029 LPT Heat Shields - Weld Repair, Repair-029 (VRS4099)

DMC:V2500-A0-72-50-2180-02A-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 72-50-21-300-029 LPT Heat Shields - Weld Repair, Repair-029 (VRS4099)

Effectivity

FIG/ITEM

PART NO.

02-310

3A1975

02-330

3A1981

02-390

3A1964

02-410

3A1968

02-430

3A1956

02-450

3A1962

02-510

3A1945

02-530

3A1949

02-550

3A1937

02-570

3A1943

02-630

3A1922

02-650

3A1926

02-670

3A1928

02-690

3A1930

Material of component

PART IDENT

IAE

SYMBOL

MATERIAL

Heatshield, Stage 5, Rear

MTS1187A/INCO 625

Heatshield, Stage 5, Front

MTS1187A/INCO 625

Heatshield, Stage 4, Rear

MTS1187A/INCO 625

Heatshield, Stage 4, Front

MTS1187A/INCO 625

Heatshield, Stage 3, Rear

MTS1187A/INCO 625

Heatshield, Stage 3, Front

MTS1187A/INCO 625

General

Price and availability - none

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

NOTE

For more equipment and materials necessary to do this repair refer to the SPM TASK 70-23-05-230-501, SPM TASK 70-31-13-310-501 and SPM TASK 70-37-16-370-501.

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Standard equipmentLOCALStandard equipment
Gas furnaceLOCALGas furnace
Hand held pneumatic grinderLOCALHand held pneumatic grinder
Rotary filesLOCALRotary files
Tungsten inert gas system (TIG)LOCALTungsten inert gas system (TIG)
Fluorescent Penetrant Inspection EquipmentLOCALFluorescent penetrant inspection equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-287 WELDING FILLER WIRELOCALCoMat 03-287

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-21-110-099 Clean the LP Turbine Heatshields

      1. Clean areas around cracks on both sides of LP turbine heatshields.

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

    2. SUBTASK 72-50-21-350-092 Weld Repair the LP Turbine Heatshields

    1. Refer to: Figure

      2. Tungsten inert gas weld cracks on two sides of LP turbine heatshields if necessary.

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

        Use tungsten inert gas system.

    3. SUBTASK 72-50-21-230-100 Do the Test for Cracks

      1. Examine welded areas for cracks.

      1. Refer to the SPM TASK 70-23-05-230-501.

        Use medium sensitivity level.

        No cracks are permitted.

    4. SUBTASK 72-50-21-220-151 Examine the Welds

      1. Examine welds.

      1. Make sure that welds are applied correctly.

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

    5. SUBTASK 72-50-21-350-093 Dress the Welded Areas

      CAUTION

      DO NOT OVERHEAT THE AREAS WHICH ARE DRESSED.

      1. If necessary, dress welds until they make a continuous surface with adjacent areas.

      1. Use hand held pneumatic grinder and rotary files, if necessary.

        No raised material is permitted on ground surfaces.

    6. SUBTASK 72-50-21-350-094 Heat Treat the LP Turbine Heatshields

      1. Heat treat LP turbine heatshields.

      1. Refer to the SPM TASK 70-37-16-370-501.

        Stress relief cycle 10, except time at temperature to be 30 minutes.

    7. SUBTASK 72-50-21-230-101 Do the Post Repair Inspection

      1. Do test for cracks.

      1. Refer to the SPM TASK 70-23-05-230-501.

        Use medium sensitivity level.

        No cracks are permitted.

    8. Figure: Typical damages for weld up repair of heatshields

    Typical damages for weld up repair of heatshields

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 03-287
Type:sp01
Supply Short Name:CoMat 03-287 WELDING FILLER WIRE
Supply Name:CoMat 03-287 WELDING FILLER WIRE
Specification Groups:
Doc NumberType
INCONEL 625 AMS 5837 AMS 5837
Suppliers:
ManufacturerRemarks
LOCAL
2R602
55596
58401
Manufacturer Code:LOCAL
Tool Number:Fluorescent penetrant inspection equipment
Tool Name:Fluorescent Penetrant Inspection Equipment
Manufacturer Code:LOCAL
Tool Number:Gas furnace
Tool Name:Gas furnace
Manufacturer Code:LOCAL
Tool Number:Hand held pneumatic grinder
Tool Name:Hand held pneumatic grinder
Manufacturer Code:LOCAL
Tool Number:Rotary files
Tool Name:Rotary files
Manufacturer Code:LOCAL
Tool Number:Standard equipment
Tool Name:Standard equipment
Manufacturer Code:LOCAL
Tool Number:Tungsten inert gas system (TIG)
Tool Name:Tungsten inert gas system (TIG)