TASK 72-50-21-300-015 LPT Heat Shields - Weld Repair, Repair-015 (VRS4026)

DMC:V2500-A0-72-50-2180-01A-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 72-50-21-300-015 LPT Heat Shields - Weld Repair, Repair-015 (VRS4026)

Effectivity

FIG/ITEM

PART NO.

01-430

3A0859

Material of component

RR

DESCRIPTION

SYMBOL

MATERIAL

Stage 3 heatshield segment

C263

General

Price and availability - none

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

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Gas furnaceLOCALGas furnace

2400 deg F - box

Hand held pneumatic grinderLOCALHand held pneumatic grinder
Rotary filesLOCALRotary files
Tungsten Inert Gas (TIG) systemLOCALTungsten Inert Gas (TIG) system
Unltraviolet lampLOCALUltraviolet lamp
Crack detection kit (fluorescent)LOCALCrack detection kit (fluorescent)
Illuminated comparator magnifierLOCALIlluminated comparator magnifier

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-184 WELDING FILLER WIRE, NICKELLOCALCoMat 03-184

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-21-110-067 Clean the LP Turbine Heatshield Segment

      1. Clean the areas around the cracks on both sides of the LP turbine heatshield segment.

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

    2. SUBTASK 72-50-21-350-064 Weld Repair the LP Turbine Heatshield Segment

    1. Refer to: Figure

      2. Tungsten inert gas weld the cracks on the two sides of the LP turbine heatshield segment if necessary.

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

        Use tungsten inert gas system.

    3. SUBTASK 72-50-21-230-064 Examine the Welded Areas for Cracks

      1. Examine the welded areas for cracks.

      1. Use the illuminated comparator magnifier for visual examination or refer to the SPM TASK 70-23-05-230-501.

        Use crack detection kit and ultraviolet lamp.

        No cracks are permitted.

    4. SUBTASK 72-50-21-220-083 Examine the Welds

      1. Examine the welds.

      1. Make sure that the welds are applied correctly.

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

    5. SUBTASK 72-50-21-350-065 Dress the Welded Areas

      CAUTION

      DO NOT OVERHEAT THE AREAS WHICH ARE DRESSED.

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

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

        No raised material is permitted on the grinded surface.

    6. SUBTASK 72-50-21-350-066 Heat Treat the LP Turbine Heatshield Segment

      1. Heat treat the LP turbine heatshield segment.

      1. Use gas furnace 2400 deg F-box for 8 hours at 1472 deg F (800 deg C).

        Degrease the temperature in the air.

    7. SUBTASK 72-50-21-230-065 Do the Post Repair Inspection

      1. Do the test for cracks.

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

        Use crack detection kit and ultraviolet lamp.

        No cracks are permitted.

    8. Figure: Weld repair of the LP turbine heatshield segment

    Weld repair of the LP turbine heatshield segment

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial correction due to conversion

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:0XPV7
Supply Number:CoMat 03-184
Type:sp01
Supply Short Name:CoMat 03-184 WELDING FILLER WIRE, NICKEL
Supply Name:CoMat 03-184 WELDING FILLER WIRE, NICKEL
Specification Groups:
Doc NumberType
MSRR9500/16C-263
OMAT:3/62C-263
Suppliers:
ManufacturerRemarks
0XPV7
28553
2R602
80357
IE306
K6970
Manufacturer Code:LOCAL
Tool Number:Crack detection kit (fluorescent)
Tool Name:Crack detection kit (fluorescent)
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:Illuminated comparator magnifier
Tool Name:Illuminated comparator magnifier
Manufacturer Code:LOCAL
Tool Number:Rotary files
Tool Name:Rotary files
Manufacturer Code:LOCAL
Tool Number:Tungsten Inert Gas (TIG) system
Tool Name:Tungsten Inert Gas (TIG) system
Manufacturer Code:LOCAL
Tool Number:Ultraviolet lamp
Tool Name:Unltraviolet lamp