TASK 72-50-22-300-031 LPT Stage 3 Vane - Weld Repair The Inner Buttress Location Slot, Repair-031 (VRS4074)

DMC:V2500-A0-72-50-2203-00A-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 72-50-22-300-031 LPT Stage 3 Vane - Weld Repair The Inner Buttress Location Slot, Repair-031 (VRS4074)

Effectivity

FIG/ITEM

PART NO.

01-750

3A0645

01-750

3A1729

01-780

3A0641

01-780

3A1733

Material of component

IAE

DESCRIPTION

SYMBOL

MATERIAL

Stage 3 turbine vane

-

MAR-M-247

General

Price and availability - none

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

NOTE

For more equipment and materials necessary to do this repair, refer to the SPM TASK 70-09-00-400-501, SPM TASK 70-23-05-230-501, SPM TASK 70-31-13-310-501 and SPM TASK 70-37-10-370-501.

NOTE

To identify the consumable materials refer to the PCI.

NOTE

Special tools are identified in the procedure by the tool primary number.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Milling machineLOCALMilling machine
Hand held grinderLOCALHand held grinder
IAE 3M14506 Milling fixture0AM53IAE 3M145061

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-185 WELDING FILLER WIRELOCALCoMat 03-185

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-22-110-078 Clean the Worn Slot-Surfaces

      1. Clean the areas to be welded.

      1. Use silicon carbide rag or similar material.

    2. SUBTASK 72-50-22-350-061 Weld Repair the Vane

      1. Tungsten inert gas weld up the worn slot surfaces.

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

        Build up sufficient material to do last machining.

    3. SUBTASK 72-50-22-350-062 Heat Treat after Weld Repair

      1. Heat treat the vane.

      1. Refer to the SPM TASK 70-37-10-370-501.

    4. SUBTASK 72-50-22-230-085 Examine the Welded Areas

      1. Do the test for cracks.

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

        Use medium sensitivity level.

        Fine surface cracks are permitted as follows:

        Any number of linear/non linear discontinuities are permitted in the weld material and heat affected zone, as long as they do not extend to an edge.

        The maximum length of linear discontinuities is 0.100 in. (2.54 mm).

        The maximum length of non-linear discontinuities is 0.020 in. (0.50 mm).

    5. SUBTASK 72-50-22-322-051 Machine the Welded Areas

      1. Machine the repaired areas.

      1. Refer to Figure.

        Use milling machine.

    6. SUBTASK 72-50-22-350-063 Dress the Welded Areas

      1. CAUTION

        DO NOT OVERHEAT THE AREAS THAT ARE DRESSED.

        Dress the welds.

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

        Use hand held grinder.

    7. SUBTASK 72-50-22-220-124 Do the Post Repair Inspection

      1. Dimensionally examine the reworked areas.

      1. Refer to Figure.

    8. SUBTASK 72-50-22-380-060 Make a Mark to Identify the Repair

      1. Vibro-peen VRS4074 adjacent to the part number.

      1. Refer to the SPM TASK 70-09-00-400-501.

    9. Figure: Weld up repair the inner buttress location slot of the stage 3 turbine vane

    Weld up repair the inner buttress location slot of the stage 3 turbine vane

    Figure: Heat treat cycles after weld up repair the inner buttress slot areas of the vane

    Heat treat cycles after weld up repair the inner buttress slot areas of the vane

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial correction due to conversion

Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 03-185
Type:sp01
Supply Short Name:CoMat 03-185 WELDING FILLER WIRE
Supply Name:CoMat 03-185 WELDING FILLER WIRE
Specification Groups:
Doc NumberType
MSRR9500/23HAYNES ALLOY 25 AMS 5796
OMAT:3/64MIL-R-5031
Suppliers:
ManufacturerRemarks
LOCAL
K6835
K6970
IE508
80357
2R602
0ZDB5
1B843
39861
Manufacturer Code:LOCAL
Tool Number:Hand held grinder
Tool Name:Hand held grinder
Manufacturer Code:0AM53
Tool Number:IAE 3M14506
Tool Name:IAE 3M14506 Milling fixture
Manufacturer Code:LOCAL
Tool Number:Milling machine
Tool Name:Milling machine