TASK 72-50-23-300-043 LPT Stage 3 Outer Shroud Seal Segment - Weld Repair Cracks, Repair-043 (VRS4417)

DMC:V2500-A0-72-50-2303-08A-627A-C|Issue No:001.00|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 72-50-23-300-043 LPT Stage 3 Outer Shroud Seal Segment - Weld Repair Cracks, Repair-043 (VRS4417)

Effectivity

FIG/ITEM

PART NO.

01-350

3A2050

Material of component

PART IDENT

IAE

SYMBOL

MATERIAL

Stage 3 Shroud Seal Segment

MTS1187A/INCO 625

General

Price and availability - none

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

Before repair remove the honeycomb, refer to Repair VRS4283 TASK 72-50-23-300-027 (REPAIR-027).

After repair replace the honeycomb, refer to Repair VRS4283 TASK 72-50-23-300-027 (REPAIR-027).

NOTE

For more equipment and materials necessary to do this repair refer to the SPM TASK 70-11-03-300-503, SPM TASK 70-23-02-230-501 and SPM TASK 70-31-13-310-501.
Equivalent equipment may be used.

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

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

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-23-320-062 Prepare the Surfaces before Welding

      1. Completely V-groove the full length of the crack.

      1. Use an hand held grinder.

        Keep material removal to a minimum to remove cracks.

        Remove all braze material from area A5.

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

        If crack goes through, V-groove to half depth and weld up. After this, V-groove from other surface until weld seam as necessary. Weld other side as usual.

    2. SUBTASK 72-50-23-110-116 Clean the Stage 3 Shroud Seal Segments

      1. Clean the areas around the cracks.

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

    3. SUBTASK 72-50-23-310-077 Weld Repair the Stage 3 Shroud Seal Segments

      1. Gas tungsten arc weld the cracks at areas A3 and A4.

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

        For welding up through cracks refer to Step.

    4. SUBTASK 72-50-23-230-100 Examine the Welded Areas for Cracks

      1. Do the test for cracks.

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

        No cracks are permitted.

    5. SUBTASK 72-50-23-320-063 Dress the Welded Areas

      CAUTION

      DO NOT OVERHEAT THE AREAS WHICH ARE DRESSED.

      1. Dress the welds.

      1. Refer to Figure.

        Welded areas must be equal to the original contours and must be flush with adjacent surfaces.

        Use an hand held grinder.

    6. SUBTASK 72-50-23-220-142 Examine the Machined Areas

      1. Examine dimensionally.

      1. Refer to Figure.

    7. SUBTASK 72-50-23-110-136 Clean the Stage 3 Shroud Seal Segments

      1. Aqueous cleaning.

      1. Refer to the SPM TASK 70-11-03-300-503.

    8. Figure: Dimensions for weld repair of the stage 3 shroud seal segment

    Dimensions for weld repair of the stage 3 shroud seal segment

    Figure: Dimensions for weld repair of the stage 3 shroud seal segment

    Sheet 1

    Legend
    Dimensions for weld repair of the stage 3 shroud seal segment

    Sheet 1

    Close

    Figure: Dimensions for weld repair of the stage 3 shroud seal segment

    Sheet 2

    Legend
    Dimensions for weld repair of the stage 3 shroud seal segment

    Sheet 2

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
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