TASK 72-50-23-300-073 LPT Stage 4 Shroud Seal Segment - Weld Repair Cracks, Repair-073 (VRS4632)

DMC:V2500-A1-72-50-2304-05A-627A-C|Issue No:001.00|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 72-50-23-300-073 LPT Stage 4 Shroud Seal Segment - Weld Repair Cracks, Repair-073 (VRS4632)

Effectivity

FIG/ITEM

PART NO.

01-250

3A3090

Material of component

PART IDENT

IAE SYMBOL

MATERIAL

Stage 4 shroud seal segment

Hastelloy X

General

Price and availability - none

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

Make sure that the necessary cleaning and inspection procedures are done before this repair.

Before repair remove the honeycomb, refer to VRS4569 TASK 72-50-23-300-067 (Repair-067).

After repair replace the honeycomb, refer to VRS4569 TASK 72-50-23-300-067 (Repair-067).

NOTE

For more equipment and materials necessary to do this repair refer to 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

NameManufacturerPart Number / IdentificationQuantityRemark
Hand held grinderLOCALHand held grinder

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-197 WELDING FILLER WIRECoMat 03-197

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-23-320-011 Prepare the Surfaces before Welding

    1. Refer to Figure.

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

      1. Keep material removal to a minimum to remove cracks. Remove all braze material from area A4.

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

        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 72-50-23-110-016 Clean the Stage 4 Shroud Seal Segment

      1. Clean the areas around the cracks.

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

    3. SUBTASK 72-50-23-310-008 Weld Repair the Stage 4 Shroud Seal Segment

    1. Refer to Figure.

      2. Gas tungsten arc weld the cracks at areas A3.

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

        For welding up through cracks refer to Step.

    4. SUBTASK 72-50-23-230-008 Examine the Welded Areas for Cracks

      1. Do the test for cracks.

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

        No cracks are permitted.

    5. SUBTASK 72-50-23-320-012 Dress the Welded Areas

    1. Refer to Figure.

      2. CAUTION

        DO NOT OVERHEAT THE AREAS TO BE DRESSED.

        Dress the welds.

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

    6. SUBTASK 72-50-23-220-011 Examine the Machined Areas

    1. Refer to Figure.

    2. Examine dimensionally.

    7. SUBTASK 72-50-23-110-017 Clean the Stage 4 Shroud Seal Segment

      1. Aqueous cleaning

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

    8. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Link not Found
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 03-197
Type:sp01
Supply Short Name:CoMat 03-197 WELDING FILLER WIRE
Supply Name:CoMat 03-197 WELDING FILLER WIRE
Specification Groups:
Doc NumberType
MSRR9500/215HASTELLOY X
OMAT:3/165AMS 5798
OMAT:3/165
Suppliers:
ManufacturerRemarks
LOCAL
07098
IE508
0B491
2R602
36346
55596
57965
58401
80357
IE306
K6835
1GD26
Manufacturer Code:LOCAL
Tool Number:Hand held grinder
Tool Name:Hand held grinder