TASK 72-45-32-300-001 HPT Stage 2 Blade - Blend Repair On The Airfoil Platform And The Leading-Edge Platform Knife-Edge Area, Repair-001 (VRS3240)

DMC:V2500-A0-72-45-3201-00A-649A-C|Issue No:003.00|Issue Date:2018-05-01

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 72-45-32-300-001 HPT Stage 2 Blade - Blend Repair On The Airfoil Platform And The Leading-Edge Platform Knife-Edge Area, Repair-001 (VRS3240)

Effectivity

FIG/ITEM

PART NO.

01-010

2A0402

01-010

2A0402-001

01-010

2A1102

01-010

2A1102-001

01-010

2A1102-002

01-010

2A2202

01-010

2A2202-001

01-010

2A2202-002

01-010

2A2202-003

01-010

2A2702

01-010

2A2702-001

01-010

2A4422

01-010

2A4722

01-010

2A4822

01-010

2A8602

01-010

2A8902

01-010

2A9002

Material of component

PART IDENT

SYMBOL

MATERIAL

Stage 2 HPT blade assembly

Wrought non-hardening nickel base alloy

General

The blade assembly blend limits are looked at by the serviceable structure of the blade. If you have many repaired blades in the same turbine assembly at or near the maximum repair limits or that have repair areas, they can affect the turbine efficiency and engine performance.

Do this procedure you blend the dents, nicks with the base material shown or coating that is damaged on the airfoil and blend the cracks, nicks and chipped coating on the platform. All blended areas must be coated.

A maximum of five blends is permitted on the airfoil and one blend on the leading-edge platform knife-edge area.

Price and availability - none

NOTE

Equivalent materials or equipment can be used.
More equipment and materials necessary to do this repair are given in SPM TASK 70-09-00-400-501

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Fine fileLOCALFine file
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-070 BUFFING POLISHING COMPOUND75554CoMat 05-070
CoMat 05-106 ABRASIVE STONEK6835CoMat 05-106
CoMat 05-125 ABRASIVE PAD, SILICON CARBIDE, ULTRA-FINELOCALCoMat 05-125
CoMat 05-126 ABRASIVE PAD, ALUMINUM OXIDE, VERY FINELOCALCoMat 05-126
CoMat 05-137 POLISHING COMPOUNDLOCALCoMat 05-137
CoMat 05-189 COMPOUND, POLISHING AND BUFFINGIAE65CoMat 05-189
CoMat 05-190 COMPOUND, SILICON CARBIDE DEBURRING (150 GRIT AND FINER)IAE65CoMat 05-190
CoMat 05-191 COMPOUND - POLISHING, GREASELESS, COARSE75554CoMat 05-191

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-45-32-350-051 Blend or Polish the Dents and Nicks on the Airfoil

    1. Refer to Figure.

      2. Blend the dents, nicks and damaged coating on the airfoil.

      1. Refer to the SPM TASK 70-35-21-350-501.

      2. All blends must be smooth and round bottomed and made in the shape of the initial contour. The minimum blend length to depth is 10 to 1.

      3. The leading edge and the front airfoil convex surface maximum blend depth is 0.010 in. (0.25 mm) at location 1.

      4. The trailing edge maximum blend depth is 0.050 in. (1.27 mm).

      5. A maximum of two blends is permitted on the trailing edge.

      6. The maximum airfoil blend depth is 0.005 in. (0.13 mm) for the remainder of the airfoil.

      7. Do not blend the airfoil in less than 0.250 in. (6.35 mm) from the blade platform.

      8. You can remove raised material or coating by polishing in the areas where you are not permitted to blend by the SPM TASK 70-35-21-350-501.

    2. SUBTASK 72-45-32-350-052 Blend or Polish the Cracks, Nicks and Chipped Coating on the Platform

    1. Refer to Figure.

      2. Blend the cracks, nicks and chipped coating on the platform and the leading-edge platform knife-edge area.

      1. Refer to the SPM TASK 70-35-21-350-501.

      2. The blend must be smooth and made in the shape of the initial contour.

      3. The minimum blend length to depth is 10 to 1.

      4. The maximum blend depth of the leading edge platform knife-edge is 0.030 in. (0.76 mm) from the initial contour.

      5. Remove the complete section if you blend in the 0.200 in. (5.08 mm) area.

      6. A maximum of one blend is permitted.

      7. You can blend the platform corners a maximum of 0.030 in. (0.762 mm) from the initial contour.

      8. The maximum blend depth of the platform at Location 2 is 0.005 in. (0.13 mm).

      9. No blending is permitted in the airfoil radius.

      10. You can remove raised coating by polishing in the areas where you are not permitted to blend by the SPM TASK 70-35-21-350-501.

    3. SUBTASK 72-45-32-350-055 Blend the Cracks and Nicks on the Root and Platform Area

    1. Refer to Figure.

      2. Blend the nicks and cracks at Locations 1 and 6.

      1. The maximum depth of the blend is 0.005 in. (0.13 mm).

      2. The minimum blend length to depth is 10 to 1.

      3. All blends must have a smooth bottom and made in the shape of the initial contour.

      3. Blend the nicks and cracks at Location 3.

      1. The maximum depth of the blend is 0.010 in. (0.25 mm).

      2. The minimum blend length to depth is 10 to 1.

      3. All blends must have a smooth bottom and made in the shape of the initial contour.

    4. Blends are not permitted at Locations 2, 4 and 5.

    4. SUBTASK 72-45-32-220-061 Examine the Airfoil and the Platform

    1. Refer to Figure.

    2. Examine the airfoil and the platform.

    5. SUBTASK 72-45-32-220-062-A00 Examine the Blade Wall Thickness (PN 2A0402, 2A0402-001, 2A1102 and 2A1102-001)

      1. Examine the blade wall thickness only when the coating is removed and you can see erosion, or you have removed all the coating locally by blending the airfoil. It is necessary to examine the wall thickness only at locations you have blended.

      1. Refer to TASK 72-45-32-200-001-A00 (INSPECTION-001, CONFIG-001).

    6. SUBTASK 72-45-32-220-062-B00 Examine the Blade Wall Thickness (PN 2A2202, 2A2202-001, 2A2202-002, 2A2202-003, 2A2702, 2A2702-001, 2A4422, 2A4722, 2A4822, 2A8702 and 2A9002)

      1. Examine the blade wall thickness only when the coating is removed and you can see erosion, or you have removed all the coating locally by blending the airfoil. It is necessary to examine the wall thickness only at the locations you have blended.

      1. Refer to TASK 72-45-32-200-001-B00 (INSPECTION-001, CONFIG-002).

    7. SUBTASK 72-45-32-220-064 Identify the Repair

      1. Mark VRS3240 adjacent to the part number, if necessary.

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

    8. SUBTASK 72-45-32-340-051-A00 Coat the Blade (PN 2A0402, 2A0402-001, 2A1102 and 2A1102-001)

      1. Coat the airfoil and the platform.

      1. Refer to Repair, VRS3242 TASK 72-45-32-300-002 (REPAIR-002).

    9. SUBTASK 72-45-32-340-051-B00 Coat the Blade (PN 2A2202, 2A2202-001, 2A2702 and 2A8702)

      1. Coat the airfoil and the platform.

      1. Refer to Repair, VRS3396 TASK 72-45-32-300-012 (REPAIR-012)**.

    10. SUBTASK 72-45-32-340-051-C00 Coat the Blade (PN 2A4422, 2A4722 and 2A4822)

      1. Coat the airfoil and the platform.

      1. Refer to Repair, VRS3602 TASK 72-45-32-300-021 (REPAIR-021).

    11. Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Sheet 2

    Legend
    Repair Details and Dimensions

    Sheet 2

    Close

    Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added PN 2A4722 and 2A4822. (17VC501)

Manufacturer Code:75554
Enterprise Name:DELETED, SEE SUPPLIER CODE IAE522
Manufacturer Code:IAE65
Enterprise Name:DELETED, SEE VENDOR CODE V065V
Manufacturer Code:K6835
Enterprise Name:MED-LAB LTD
BU Name:MED-LAB LTD
Street:COPELAND ST
City:DERBY
Zip Code:DE1 2PU
Country:GREAT BRITAIN
Phone Number:44-1332-349094
Fax Number:44-1332-371237
Email:sales@med-lab.co.uk
Internet:www.med-lab.co.uk
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:75554
Supply Number:CoMat 05-070
Type:sp01
Supply Short Name:CoMat 05-070 BUFFING POLISHING COMPOUND
Supply Name:CoMat 05-070 BUFFING POLISHING COMPOUND
Specification Groups:
Doc NumberType
PMC 3061NO. 418
Suppliers:
ManufacturerRemarks
75554
IE130
Manufacturer Code:K6835
Supply Number:CoMat 05-106
Type:sp01
Supply Short Name:CoMat 05-106 ABRASIVE STONE
Supply Name:CoMat 05-106 ABRASIVE STONE
Specification Groups:
Doc NumberType
(SS-S-736/2/26) (A-A-3068/2-26)SQUARE FINE SS-S-736 TYPE II CLASS A1
Suppliers:
ManufacturerRemarks
K6835
KC1D9
Manufacturer Code:LOCAL
Supply Number:CoMat 05-125
Type:sp01
Supply Short Name:CoMat 05-125 ABRASIVE PAD, SILICON CARBIDE, ULTRA-FINE
Supply Name:CoMat 05-125 ABRASIVE PAD, SILICON CARBIDE, ULTRA-FINE
Specification Groups:
Doc NumberType
OMAT: 582 (RR REF)SCOTCH BRITE TYPE S.7448 SCOTCH BRITE No.7448 MIL-A-9962A TYPE III GRADE AAA
JCR-255 (JAEC REF)SCOTCH BRITE TYPE S.7448 SCOTCH BRITE No.7448 MIL-A-9962A TYPE III GRADE AAA
PMC 4435 (PW REF)SCOTCH BRITE TYPE S.7448 SCOTCH BRITE No.7448 MIL-A-9962A TYPE III GRADE AAA
Suppliers:
ManufacturerRemarks
LOCAL
K0993
K6835
28124
Manufacturer Code:LOCAL
Supply Number:CoMat 05-126
Type:sp01
Supply Short Name:CoMat 05-126 ABRASIVE PAD, ALUMINUM OXIDE, VERY FINE
Supply Name:CoMat 05-126 ABRASIVE PAD, ALUMINUM OXIDE, VERY FINE
Specification Groups:
Doc NumberType
OMAT: 583 (RR REF)SCOTCH BRITE TYPE A.7447 SCOTCH BRITE No. 7447 MIL-A-9962A TYPE I GRADE A
JCR-256 (JAEC REF)
PMC 4095 (PW REF)
Suppliers:
ManufacturerRemarks
LOCAL
K0993
K6835
28124
Manufacturer Code:LOCAL
Supply Number:CoMat 05-137
Type:sp01
Supply Short Name:CoMat 05-137 POLISHING COMPOUND
Supply Name:CoMat 05-137 POLISHING COMPOUND
Specification Groups:
Doc NumberType
PMC 3023GREASELESS COMPOUND GRADE A
Suppliers:
ManufacturerRemarks
LOCAL
75554
IE130
Manufacturer Code:IAE65
Supply Number:CoMat 05-189
Type:sp01
Supply Short Name:CoMat 05-189 COMPOUND, POLISHING AND BUFFING
Supply Name:CoMat 05-189 COMPOUND, POLISHING AND BUFFING
Specification Groups:
Doc NumberType
PMC 3017MOCO
Suppliers:
ManufacturerRemarks
IAE65
Manufacturer Code:V065V
Supply Number:CoMat 05-190
Type:sp01
Supply Short Name:CoMat 05-190 COMPOUND, SILICON CARBIDE DEBURRING (150 GRIT AND FINER)
Supply Name:CoMat 05-190 COMPOUND, SILICON CARBIDE DEBURRING (150 GRIT AND FINER)
Specification Groups:
Doc NumberType
MOCO BURR COMPOUND No. 7280, 150 GRIT OR FINER
Suppliers:
ManufacturerRemarks
V065V
56KR1
Manufacturer Code:75554
Supply Number:CoMat 05-191
Type:sp01
Supply Short Name:CoMat 05-191 COMPOUND - POLISHING, GREASELESS, COARSE
Supply Name:CoMat 05-191 COMPOUND - POLISHING, GREASELESS, COARSE
Specification Groups:
Doc NumberType
PMC 3022GREASELESS COMPOUND GRADE 3022-1
Suppliers:
ManufacturerRemarks
75554
Link not Found
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment