TASK 72-50-24-300-026 LPT Inner Diffuser Duct Support Ring - Weld Repair Cracks, Repair-026 (VRS4132)

DMC:V2500-A0-72-50-2403-01A-920A-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 72-50-24-300-026 LPT Inner Diffuser Duct Support Ring - Weld Repair Cracks, Repair-026 (VRS4132)

Effectivity

FIG/ITEM PART NO.

01-170

3A0113

Material of component

PART IDENT

SYMBOL

MATERIAL

Support ring assy

MTS1155B or 2.4650.7 (C263)

General

Price and availability - none

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

NOTE

For equipment and materials necessary to do this repair refer to the SPM TASK 70-23-05-230-501, SPM TASK 70-11-34-300-503, SPM TASK 70-31-13-13-310-501 and SPM TASK 70-37-00-370-501.
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 03-184 WELDING FILLER WIRE, NICKELLOCALCoMat 03-184

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-24-230-107 Find the Location and Length of the Cracks

      1. Do the test for cracks.

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

        Repair cracks which are not longer than 0.800in. (20.32 mm).

    2. SUBTASK 72-50-24-310-066 Perpare the Cracks before Weld Repair

      1. V-Groove cracks.

      1. Refer to TASK 7 2-31-13-310-501.

    3. SUBTASK 72-50-24-110-152 Clean the Support Ring Assembly

      1. Aqueous degrease.

      1. Refer to the SPM TASK 70-11-34-300-503.

    4. SUBTASK 72-50-24-310-067 Weld Repair the Cracks

      1. Weld cracks. Use manual tungsten iner gas weld technique.

    5. SUBTASK 72-50-24-370-062 Heat Treat after Weld repair

      1. Heat treat the component.

      1. Refer to the SPM TASK 70-37-00-370-501.

        Put the support ring assembly in an oven for eight hours at 1450 to 1500 deg. F (786 to 814 deg. C).

        Use argon or vacuum.

        Cooling rate equivalent to air cooling.

    6. SUBTASK 72-50-24-230-108 Examine the Welded Areas for Cracks

      1. Do the test for cracks.

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

        No cracks permitted.

    7. SUBTASK 72-50-24-110-153 Clean the Support Ring Assembly

      1. Aqueous degrease.

      1. Refer to the SPM TASK 70-11-34-300-503.

    8. SUBTASK 72-50-24-320-063 Dress the Welded Areas

      1. Dress all surplus weld to original contours.

      1. Welded areas must be blended in to adjacent surfaces.

        Surface finish must be the same as adjacent surface.

    9. Figure: Weld repair cracks on the support ring assembly

    Weld repair cracks on the support ring assembly

Requirements After Job Completion

Follow-On Conditions

NONE
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