TASK 72-45-14-300-001 HPT Stage 1 Blade - Blend Repair On The Airfoil, Platform, And Root, Repair-001 (VRS3202)

DMC:V2500-A0-72-45-1401-00A-649A-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 72-45-14-300-001 HPT Stage 1 Blade - Blend Repair On The Airfoil, Platform, And Root, Repair-001 (VRS3202)

Effectivity

FIG/ITEM

PART NO.

01-010

2A8901

01-010

2A9001

01-010

2A9101

01-010

2A9201

01-010

2A9321

01-010

2A9721

Material of component

PART IDENT

SYMBOL

MATERIAL

Stage 1 HPT blade assembly

Cast nickel base alloy

General

This Repair must only be done when the instruction to do so is given in TASK 72-45-14-200-000 (INSPECTION-000).

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

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

Price and availability - none

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Fine FileLOCAL
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

CAUTION

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.

Procedure

    1. SUBTASK 72-45-14-350-051 Blend or Polish the Dents and Nicks on the Airfoil (Not Applicable To PN 2A9321, Or 2A9721)

    1. Refer to Figure and Figure.

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

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

      2. All blends must be smooth bottomed and made in the shape of the initial contour.

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

      4. The leading edge maximum blend depth is 0.005 in. (0.13 mm) at Location 2.

      5. The trailing edge maximum blend depth is 0.070 in. (1.78 mm) at Location 4.

      6. The maximum blend depth of the front airfoil convex surface at Location 3 is 0.010 in. (0.254 mm).

      7. The maximum airfoil blend depth is 0.005 in. (0.13 mm) on the concave and rear convex surfaces at Location 1.

      8. Do not blend the airfoil in less than 0.100 in. (2.54 mm) from the blade platform.

      9. Do not blend in the airfoil radius.

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

    2. SUBTASK 72-45-14-350-062 Blend or Polish the Dents and Nicks on the Platform (Not Applicable To PN 2A9321, Or 2A9721)

    1. Refer to Figure.

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

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

      2. All blends must be smooth-bottomed 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 is 0.005 in. (0.13 mm) at Location 1.

      5. You can blend the platform corners a maximum of 0.030 in. (0.76 mm) from the initial contour.

      6. Do not blend in the airfoil radius.

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

    3. SUBTASK 72-45-14-350-063 Blend the Dents and Nicks on the Root

    1. Refer to Figure.

      2. Blend the dent and nicks on the blade root.

      1. Blends up to 0.100 in. (2.54 mm) in diameter and 0.005 in. (0.127 mm) in depth are permitted except in the fillet and the shaded areas (both sides).

      2. Blends up to 0.100 in. (2.54 mm) in diameter and 0.010 in. (0.254 mm) in depth are permitted on the blade root bottom and the edges of the blade root bottom. All blends must have a smooth bottom.

    4. SUBTASK 72-45-14-220-061 Examine the Airfoils and Platform

      1. Examine the airfoil and platform.

      1. Refer to Figure.

    5. SUBTASK 72-45-14-220-062-B00 Examine the Blade Wall Thickness (PN 2A8901, 2A9001, 2A9101 and 2A9201)

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

      1. Refer to TASK 72-45-14-200-001-B00 (INSPECTION-001, CONFIG-002).

    6. SUBTASK 72-45-14-220-062-C00 Examine the Blade Wall Thickness (PN 2A9321)

    1. This subtask is deleted.

    7. SUBTASK 72-45-14-220-062-D00 Examine the Blade Wall Thickness (PN 2A9721)

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

      1. Refer to TASK 72-45-14-200-001-D00 (INSPECTION-001, CONFIG-004).

    8. SUBTASK 72-45-14-220-063 Identify the Repair

      1. Make a mark VRS3202 adjacent to the part number if necessary.

      1. Make a permanent mark by SPM TASK 70-09-00-400-501.

    9. SUBTASK 72-45-14-340-051-B00 Coat the Airfoil (PNs 2A8901, 2A9001, 2A9101 and 2A9201)

      1. Coat the airfoil.

      1. Do the procedure given in Repair, VRS3042 TASK 72-45-14-300-009 (REPAIR-009).

    10. 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

    Sheet 3

    Legend
    Repair Details and Dimensions

    Sheet 3

    Close

    Figure: Repair Details and Dimensions

    Sheet 4

    Legend
    Repair Details and Dimensions

    Sheet 4

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised effectivity table and steps. (17VC558)

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
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment
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