TASK 72-50-21-300-012 LPT Case - Weld Repair, Repair-012 (VRS4015)

DMC:V2500-A0-72-50-2101-01A-627A-C|Issue No:002.00|Issue Date:2015-08-01

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 72-50-21-300-012 LPT Case - Weld Repair, Repair-012 (VRS4015)

Effectivity

FIG/ITEM

PART NO.

01-010

3A0807

01-010

3A0990

01-010

3A0991

01-010

3A1908

01-010

3A2183

01-010

3A2265

01-010

3A2447

01-010

3A2533

Material of component

PART IDENT

SYMBOL

MATERIAL

LP Turbine case

MTS1101D/INCONEL 718

General

Price and availability - none

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

If the damage is bad, machine to remove damage, refer to Figure.

Before you start this repair, remove screw thread inserts. Refer to Repair VRS4049 TASK 72-50-21-300-026, (REPAIR-026). After repair install new screw thread inserts. Refer to Repair VRS4049 TASK 72-50-21-300-026, (REPAIR-026).

NOTE

For more equipment and materials necessary to do this repair refer to SPM TASKS given below:
TASK 70-11-03-300-503
TASK 70-23-05-230-501
TASK 70-31-13-310-501
TASK 70-37-00-370-501
TASK 70-37-01-370-501
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 03-284 WELDING FILLER WIRE, NiBASELOCALCoMat 03-284

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-21-320-064 Machine the Damaged Slots

      NOTE

      The cleaning of the damaged slots is not necessary if no machining is carried out.

      1. Machine the damaged slots.

      1. Refer to Figure for dimensions.

        If damage is minimal no machining is necessary.

    2. SUBTASK 72-50-21-110-090 Clean the Machined Slots

      NOTE

      The cleaning of the damaged slots is not necessary if no machining is carried out.

      1. Clean the surfaces to be welded.

      1. Use silicon carbide rag or similar.

    3. SUBTASK 72-50-21-230-090 Examine the Surface to be Welded for Cracks

      1. Do the test for cracks.

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

        Use medium sensitivity level.

        No cracks are permitted.

    4. SUBTASK 72-50-21-110-091 Clean the LP Turbine Case

      1. Aqueous degrease.

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

    5. SUBTASK 72-50-21-310-054 Weld Repair of Worn Surfaces

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

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

        Build up sufficient material to let final machining.

    6. SUBTASK 72-50-21-370-057 Heat Treat after Repair

      1. Heat treat the LP turbine case.

    7. SUBTASK 72-50-21-230-091 Examine the Welded Surfaces for Cracks

      1. Do the test for cracks.

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

        Use medium sensitivity level.

        No cracks are permitted.

    8. SUBTASK 72-50-21-110-092 Clean the LP Turbine Case

      1. Aqueous degrease.

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

    9. SUBTASK 72-50-21-320-065 Machine the Welded Areas

      1. Machine the welded areas.

      1. Refer to Figure for dimensions.

    10. SUBTASK 72-50-21-350-085 Dress the Welded Areas

      1. Dress the welds.

      1. Welded areas must be equal to the original contours.

        Welded areas must have a continuous surface, finish must be as smooth as the adjacent areas.

    11. SUBTASK 72-50-21-220-145 Examine the Machined Areas

      1. Dimensionally examine.

      1. Refer to Figure for dimensions.

    12. SUBTASK 72-50-21-230-092 Examine the Repaired Areas for Cracks

      1. Do the test for cracks.

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

        Use medium sensitivity level.

        No cracks are permitted.

    13. SUBTASK 72-50-21-110-093 Clean the LP Turbine Case

      1. Aqueous degrease.

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

    14. Figure: LP turbine case anti rotation slots before weld repair

    LP turbine case anti rotation slots before weld repair

    Figure: LP turbine case anti rotation slots before weld repair

    LP turbine case anti rotation slots before weld repair

    Figure: LP turbine case anti rotation slots before weld repair

    LP turbine case anti rotation slots before weld repair

    Figure: LP turbine case anti rotation slots before weld repair

    LP turbine case anti rotation slots before weld repair

    Figure: LP turbine case anti rotation slots before weld repair

    LP turbine case anti rotation slots before weld repair

    Figure: LP turbine case anti rotation slots before weld repair

    LP turbine case anti rotation slots before weld repair

    Figure: LP turbine case anti rotation slots after weld repair

    LP turbine case anti rotation slots after weld repair

    Figure: LP turbine case anti rotation slots after weld repair

    LP turbine case anti rotation slots after weld repair

    Figure: LP turbine case anti rotation slots after weld repair

    LP turbine case anti rotation slots after weld repair

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised note to remove "materials or". (PSAF 15VC314)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 03-284
Type:sp01
Supply Short Name:CoMat 03-284 WELDING FILLER WIRE, Ni BASE
Supply Name:CoMat 03-284 WELDING FILLER WIRE, NiBASE
Specification Groups:
Doc NumberType
INCONEL 718 AMS 5832 AWS 5.14 MSRR9500/220
INCONEL 718 AMS 5832 AWS 5.14CLASS ER NI FE Cr-2 OMAT:3/206
INCONEL 718 AMS 5832 AWS 5.14CLASS ER NI FE Cr-2
Suppliers:
ManufacturerRemarks
LOCAL
28553
IE137
08489
IE508
0ZDB5
2R602
55596
58401
80357
K6835