TASK 72-50-33-300-004 LPT Stage 7 Rotating Airseal - Plasma Spray The Snap Diameter, Repair-004 (VRS4215)

DMC:V2500-A0-72-50-3307-00A-609A-C|Issue No:004.00|Issue Date:2018-11-01

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 72-50-33-300-004 LPT Stage 7 Rotating Airseal - Plasma Spray The Snap Diameter, Repair-004 (VRS4215)

Effectivity

FIG/ITEM

PART NO.

01-010

3A0797

Material of component

DESCRIPTION

SYMBOL

MATERIAL

Stage 7 turbine airseal

MTS1103A/WASPALOY

General

Price and availability - none

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

It is not permitted to repair grown snap diameters.

NOTE

For more equipment and materials necessary to do this repair, refer to the SPM TASK 70-09-00-400-501, SPM TASK 70-11-34-300-503, SPM TASK 70-23-05-230-501 and SPM TASK 70-34-03-340-501.
Equivalent equipment may be used.

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
Chemical cleaning facilityLOCALChemical cleaning facility
Crack inspection equipmentLOCALCrack inspection equipment
Machining facilityLOCALMachining facility
Table inspection facilityLOCALTable inspection facility
Thermal spraying facilityLOCALThermal spraying facility
Marking equipmentLOCALMarking equipment
IAE 3M14296 Mounting adapter0AM53IAE 3M142961
IAE 3M14386 Base plate0AM53IAE 3M143861
IAE 3M14397 Turning fixture0AM53IAE 3M143971

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-047 TAPE, HEAT REFLECTIVE52152CoMat 02-047
CoMat 02-050 HIGH TEMPERATURE GLASS CLOTH TAPE76381CoMat 02-050
CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5)00741CoMat 03-089
CoMat 03-090 METAL SPRAYING POWDER Ni/Al (95/5)0AM53CoMat 03-090
CoMat 05-046 ALUMINUM OXIDE GRIT62596CoMat 05-046

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-33-320-038 Machine the Diameter of the Stage 7 Turbine Airseal

      NOTE

      Remove the old coating fully, if the airseal diameter was plasma sprayed before.

      1. Machine the diameter D2 and chamfer.

      1. Refer to Figure.

        Keep material removal to a minimum.

        Remove the coating or damage fully.

    2. SUBTASK 72-50-33-220-038 Examine the Machined Areas

      1. Examine dimensionally the machine surfaces.

      1. Refer to Figure.

    3. SUBTASK 72-50-33-230-118 Examine the Machined Surfaces for Cracks

      1. Do the test for cracks.

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

        Use ultra high sensitivity level.

        No cracks are permitted.

    4. SUBTASK 72-50-33-110-084 Clean the Stage 7 Turbine Airseal

      1. Aqueous degrease.

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

    5. SUBTASK 72-50-33-340-031 Prepare the Surfaces for the Plasma Spray Procedure

      1. Mask the areas A3.

      1. Make sure that the surfaces have full protection.

      2. Grit blast the areas A1.

      1. Use CoMat 05-046 ALUMINUM OXIDE GRIT. The surface texture must be 120 to 200 microinch RMS (3.0 to 5.0 micrometer Ra).

        Blasting in area A2 is permitted.

        Refer to the SPM TASK 70-34-03-340-501 and Figure.

      3. Change the masking if necessary.

      1. Replace the damaged masking.

        Do not touch or bring unwanted material on the blasted areas.

    6. SUBTASK 72-50-33-340-032 Plasma Spray the Prepared Surfaces

      1. Plasma spray the area A1.

      1. Refer to Figure.

        Make sure that there is sufficient material to do last machining.

        Refer to the SPM TASK 70-34-03-340-501.

        Coating in area A2 is permitted if it was blasted before and must be removed subsequently.

    7. SUBTASK 72-50-33-340-033 Remove the Protection from the Masked Areas

      1. Remove the masking.

      1. Remove all the tape.

    8. SUBTASK 72-50-33-320-039 Machine the Coated Area

      1. Machine the coated areas and chamfers.

      1. For dimensions refer to Figure.

        Refer to the SPM TASK 70-34-03-340-501.

      2. Remove the coating from area A2.

      1. Machine to remove the coating.

        Refer to Figure and Figure.

        Too much coating must be finished smoothly.

    9. SUBTASK 72-50-33-110-086 Clean the Stage 7 Turbine Airseal

      1. Aqueous degrease.

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

    10. SUBTASK 72-50-33-220-039 Do the Post Repair Inspection

      1. Examine the machined areas dimensionally.

      1. Refer to Figure.

      2. Examine the coating.

      1. Accept the standards.

    11. SUBTASK 72-50-33-380-071 Make a Mark to Identify the Repair

      1. Vibropeen VRS4215 and applicable beehive symbol adjacent to the part number.

      1. Refer to the SPM TASK 70-09-00-400-501 for mechanical or manual vibropeening. Up to 0.002 in. (0.05 mm) maximum depth.

        .

    12. SUBTASK 72-50-33-350-116 Do the Post Repair

      1. Rebalance the stage 7 turbine airseal.

      1. Refer to VRS4216 TASK 72-50-33-300-005 (REPAIR-005).

    13. Figure: Dimensions and areas before plasma spraying

    Dimensions and areas before plasma spraying

    Figure: Dimensions and areas after plasma spraying

    Dimensions and areas after plasma spraying

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial Update

Manufacturer Code:00741
Enterprise Name:Was BOC GASES
BU Name:DELETED, REFER TO SUPPLIER CODE 46AN7
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:52152
Enterprise Name:3M COMPANY
BU Name:3M CENTER
Department:INDUSTRIAL TAPE AND SPECIALTIES DIV.
Street:BUILDING 220-7W-03
City:ST. PAUL
State:MN
Zip Code:55144-1000
Country:USA
Phone Number:1-651-733-1110, 1-800-362-3550, 1-800-223-7427
Fax Number:1-651-737-4380
Internet:www.mmm.com, www.3m.com
Manufacturer Code:62596
Enterprise Name:MICRO ABRASIVES CORPORATION
BU Name:MICRO ABRASIVES CORPORATION
Street:720 SOUTHAMPTON RD
P.O. Box:669
City:WESTFIELD
State:MA
Zip Code:01085-0669
Country:USA
Phone Number:1-413-562-3641
Fax Number:1-413-562-7409
Internet:www.microgrit.com
Manufacturer Code:76381
Enterprise Name:3M COMPANY
BU Name:3M COMPANY
Department:3M CENTER
City:ST PAUL
State:MN
Zip Code:55144-1000
Country:USA
Phone Number:1-651-733-1110
Fax Number:1-651-733-9973
Internet:www.mmm.com
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:X222X
Supply Number:CoMat 02-047
Type:sp01
Supply Short Name:CoMat 02-047 TAPE, HEAT REFLECTIVE
Supply Name:CoMat 02-047 TAPE, HEAT REFLECTIVE
Specification Groups:
Doc NumberType
If CoMat 02- 047 is specified with no suffix, use one of the CoMat 02-047 letter suffix alternative materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:X222X
Supply Number:CoMat 02-050
Type:sp01
Supply Short Name:CoMat 02-050 HIGH TEMPERATURE GLASS CLOTH TAPE
Supply Name:CoMat 02-050 HIGH TEMPERATURE GLASS CLOTH TAPE
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:33870
Supply Number:CoMat 03-089
Type:sp01
Supply Short Name:CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5)
Supply Name:CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5)
Specification Groups:
Doc NumberType
PWA 1337 (PW REF)NI-109 or NI-970 or AI 1037
Suppliers:
ManufacturerRemarks
33870
Manufacturer Code:X111X
Supply Number:CoMat 03-090
Type:sp01
Supply Short Name:CoMat 03-090 METAL SPRAYING POWDER Ni/Al(95/5)
Supply Name:CoMat 03-090 METAL SPRAYING POWDER Ni/Al (95/5)
Specification Groups:
Doc NumberType
DELETED Use CoMat 03-089
Suppliers:
ManufacturerRemarks
X111X
Manufacturer Code:62596
Supply Number:CoMat 05-046
Type:sp01
Supply Short Name:CoMat 05-046 ALUMINUM OXIDE GRIT
Supply Name:CoMat 05-046 ALUMINUM OXIDE GRIT
Specification Groups:
Doc NumberType
ALUMINUM OXIDE NO. 60
Suppliers:
ManufacturerRemarks
62596
Manufacturer Code:LOCAL
Tool Number:Chemical cleaning facility
Tool Name:Chemical cleaning facility
Manufacturer Code:LOCAL
Tool Number:Crack inspection equipment
Tool Name:Crack inspection equipment
Manufacturer Code:0AM53
Tool Number:IAE 3M14296
Tool Name:IAE 3M14296 Mounting adapter
Manufacturer Code:0AM53
Tool Number:IAE 3M14386
Tool Name:IAE 3M14386 Base plate
Manufacturer Code:0AM53
Tool Number:IAE 3M14397
Tool Name:IAE 3M14397 Turning fixture
Manufacturer Code:LOCAL
Tool Number:Machining facility
Tool Name:Machining facility
Manufacturer Code:LOCAL
Tool Number:Marking equipment
Tool Name:Marking equipment
Manufacturer Code:LOCAL
Tool Number:Table inspection facility
Tool Name:Table inspection facility
Manufacturer Code:LOCAL
Tool Number:Thermal spraying facility
Tool Name:Thermal spraying facility