TASK 72-41-22-300-001 HPC Stage 7 Stator Vane - Repair The Airfoil By Material Removal, Repair-001 (VRS6025)

DMC:V2500-A0-72-41-2207-00A-655A-C|Issue No:001.00|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 72-41-22-300-001 HPC Stage 7 Stator Vane - Repair The Airfoil By Material Removal, Repair-001 (VRS6025)

Effectivity

FIG/ITEM

PART NO.

ASSEMBLY

02-150

6A4215

B

02-150

6A7426

B

02-350

6A3266

A

02-350

6A4216

B

02-350

6A7427

B

02-350

6A8770

C

02-400

6A3265 C01

A

02-400

6A4213 C01

B

02-400

6A7425 C01

B

02-400

6A8768

C

02-448

6A3265 C01

A

02-448

6A4213 C01

B

02-448

6A7425 C01

B

02-448

6A8768

C

02-450

6A3265 C02

A

02-450

6A4213 C02

B

02-450

6A7425 C02

B

02-450

6A8769

C

Material of component

PART IDENT

MATERIAL

Stage 7 HP compressor stator vane

Nickel alloy

General

This repair must only be done when the instruction to do so is given in 72-41-22, Inspection/Check.

This repair gives the instruction to remove damage on the HP compressor stator vane, stage 7, by material removal.

Not more than ten percent of stator vanes dressed to the maximum limit of this repair should be included in any one stator stage.

Stator vanes must be repaired as soon as damage or wear is monitored, to get back HP compressor efficiency and extend the stator vane life.

Material removal from the HP compressor stator vane airfoil fillet radius is not permitted.

When the depth of cut away material is more than 0.002 in. (0.05 mm), it is necessary to glass bead peen the HP compressor stator vane, stage 7, to restore the airfoil surface finish. Refer to VRS6210, TASK 72-41-22-300-022 (REPAIR-022).

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

Price and availability

Refer to International Aero Engines.

Related repairs

HP Compressor - Stage 6 to 11 - Stator Vanes - Restore airfoil surface finish. Refer to VRS6210, TASK 72-41-22-300-022 (REPAIR-022).

NOTE

More equipment and materials necessary to do this repair are in the SPM TASKs given below:
SPM TASK 70-09-00-400-501
SPM TASK 70-11-39-300-503
SPM TASK 70-23-01-230-501

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Penetrant Crack Test EquipmentLOCALPenetrant crack test equipment
Portablegrinding equipmentLOCALPortable grinding equipment
Dimensional inspection equipmentLOCALDimensional inspection equipment
Chemical cleaning equipmentLOCALChemical cleaning equipment
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-075 WATERPROOF SILICON CARBIDEIE241CoMat 05-075
CoMat 05-076 WATERPROOF SILICON CARBIDEK3895CoMat 05-076
CoMat 05-077 WATERPROOF SILICON CARBIDEK6835CoMat 05-077
CoMat 05-079 WATERPROOF SILICON CARBIDEK3895CoMat 05-079
CoMat 05-082 WATERPROOF SILICON CARBIDE44197CoMat 05-082

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-22-230-091 Do a Crack Test

      1. Do a penetrant crack test.

      1. Refer to the SPM TASK 70-23-01-230-501.

        Use penetrant crack test equipment.

    2. SUBTASK 72-41-22-220-210 Visually Examine

      1. Visually examine the crack test.

      1. Indications of defects on the stator vane are not permitted and must be removed.

    3. SUBTASK 72-41-22-350-051-A00 Remove Damage from the HP Compressor Stator Vane, Stage 7, Assembly A

    1. Refer to Figure, Figure and Figure.

      2. Remove damage on the leading and trailing edges by material removal.

      1. Use portable grinding equipment.

        Continue to remove material until all the damage is removed.

      3. Remove damage on the airfoil surfaces by material removal.

      1. Use portable grinding equipment.

        Continue to remove material until all the damage is removed.

        The maximum depth to remove the damage must not be more than 0.005 in. (0.13 mm).

        The diameter of the repaired area is to be 50 times the depth.

      4. Make smooth the repaired area.

      1. Make sure all the damage marks are completely removed and the area is made smooth into the adjacent material.

      5. Polish the repaired area.

      1. Polish the repaired area to remove scratches and to give a surface finish the same as the adjacent material.

        Make sure both the leading and trailing edges have radiused profiles.

    6. NOTE

      The last polish is to be in a radial direction.

    4. SUBTASK 72-41-22-350-051-B00 Remove Damage from the HP Compressor Stator Vane, Stage 7, Assembly B or Assembly C

    1. Refer to Figure, Figure and Figure.

      2. Remove damage on the leading and trailing edges by material removal.

      1. Use portable grinding equipment.

        Continue to remove material until all the damage is removed.

      3. Remove damage on the airfoil surfaces by material removal.

      1. Use portable grinding equipment.

        Continue to remove material until all the damage is removed.

        The maximum depth to remove the damage must not be more than 0.005 in. (0.13 mm).

        The diameter of the repaired area is to be 50 times the depth.

      4. Make smooth the repaired area.

      1. Make sure all the damage marks are completely removed and the area is made smooth into the adjacent material.

      5. Polish the repaired area.

      1. Polish the repaired area to remove scratches and to give a surface finish the same as the adjacent material.

        Make sure both the leading and trailing edges have radiused profiles.

    6. NOTE

      The last polish is to be in a radial direction.

    5. SUBTASK 72-41-22-220-101-A00 Examine the Repaired HP Compressor Stator Vane, Stage 7, Assembly A

    1. Refer to Figure, Figure and Figure.

      2. Visually examine and measure the dimensions of the leading, trailing edges and airfoil surfaces.

      1. Discard the vanes, if more than the limits specified.

        Use dimensional inspection equipment.

        AD 0.835 in. (21.20 mm).

        AE 1.327 in. (33.70 mm).

        AF 1.0069 in. (25.576 mm).

        AG 1.0042 in. (25.507 mm).

        AH 0.630 in. (16.00 mm).

        AJ 0.079 in. (2.00 mm).

        AK 0.010 in. (0.25 mm).

        AL 0.500 in. (12.70 mm).

    6. SUBTASK 72-41-22-220-101-B00 Examine the Repaired HP Compressor Stator Vane, Stage 7, Assembly B or Assembly C

    1. Refer to Figure, Figure and Figure.

      2. Visually examine and measure the dimensions of the leading, trailing edges and airfoil surfaces.

      1. Discard the vanes, if more than the limits specified.

        Use dimensional inspection equipment.

        AD 0.755 in. (19.17 mm).

        AE 1.432 in. (36.37 mm).

        AF 0.8932 in. (22.687 mm).

        AG 0.8894 in. (22.591 mm).

        AH 0.630 in. (16.00 mm).

        AJ 0.079 in. (2.00 mm).

        AK 0.010 in. (0.25 mm).

        AL 0.500 in. (12.70 mm).

    7. SUBTASK 72-41-22-110-087 Cold Ferric Chloride Etch

      1. Swab etch the repaired area(s).

      1. Refer to the SPM TASK 70-11-39-300-503, SUBTASK 70-11-39-300-001.

        Use chemical cleaning equipment.

    8. SUBTASK 72-41-22-230-056 Do a Crack Test

      1. Do a penetrant crack test on the repaired vanes.

      1. Refer to the SPM TASK 70-23-01-230-501.

        Use penetrant crack test equipment.

        No cracks are permitted.

    9. SUBTASK 72-41-22-350-102-A00 Identify the Repair, Assembly A

    1. Refer to Figure.

      2. Mark a code symbol adjacent to the assembly number.

      1. Refer to the SPM TASK 70-09-00-400-501, SUBTASK 70-09-00-400-001.

        Use vibro-engraving equipment.

    10. SUBTASK 72-41-22-350-102-B00 Identify the Repair, Assembly B or Assembly C

    1. Refer to Figure.

      2. Mark a code symbol adjacent to the assembly number.

      1. Refer to the SPM TASK 70-09-00-400-501, SUBTASK 70-09-00-400-001.

        Use vibro-engraving equipment.

    11. SUBTASK 72-41-22-380-070 Restore the Airfoil Surface Finish

      1. NOTE

        This SUBTASK is necessary to restore the airfoil surface finish only when the depth of cut away material is more than 0.002 in. (0.05 mm).

        Restore the airfoil surface finish.

      1. Refer to VRS6210, TASK 72-41-22-300-022 (REPAIR-022).

    12. Figure: Repair Details and Dimensions - Assembly A

    Sheet 1

    Legend
    Repair Details and Dimensions - Assembly A

    Sheet 1

    Close

    Figure: Repair Details and Dimensions - Assembly B or Assembly C

    Sheet 2

    Legend
    Repair Details and Dimensions - Assembly B or Assembly C

    Sheet 2

    Close

    Figure: Repair Details and Dimensions - Assembly A, Assembly B or Assembly C

    Sheet 3

    Legend
    Repair Details and Dimensions - Assembly A, Assembly B or Assembly C

    Sheet 3

    Close

    Figure: Repair Details and Dimensions - Assembly A, Assembly B or Assembly C

    Sheet 4

    Legend
    Repair Details and Dimensions - Assembly A, Assembly B or Assembly C

    Sheet 4

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:44197
Enterprise Name:SAINT-GOBAIN INDUSTRIAL CERAMICS INC.
BU Name:SAINT-GOBAIN ABRASIVES, INC
Street:ONE NEW BOND STREET
P.O. Box:PO BOX 15008
City:WORCESTER
State:MA
Zip Code:01615-0008
Country:USA
Phone Number:1-508-795-5000
Fax Number:1-508-795-2828
Internet:www.saint-gobain-northamerica.com
Manufacturer Code:IE241
Enterprise Name:DELETED. Was ANGLO ABRASIVES.
Manufacturer Code:K3895
Enterprise Name:DELETED. REFER TO VENDOR CODE KC1D9.
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:1E1X8
Supply Number:CoMat 05-075
Type:sp01
Supply Short Name:CoMat 05-075 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-075 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/28 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 800
JCR-181 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K1905
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-076
Type:sp01
Supply Short Name:CoMat 05-076 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-076 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/30 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 500
JCR-183 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-077
Type:sp01
Supply Short Name:CoMat 05-077 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-077 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/32 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 360
JCR-185 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-079
Type:sp01
Supply Short Name:CoMat 05-079 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-079 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/36 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 220 (ANSI B74.18)
JCR-189 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-082
Type:sp01
Supply Short Name:CoMat 05-082 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-082 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/39 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 120 (ANSI B74.18)
JCR-192 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:LOCAL
Tool Number:Chemical cleaning equipment
Tool Name:Chemical cleaning equipment
Manufacturer Code:LOCAL
Tool Number:Dimensional inspection equipment
Tool Name:Dimensional inspection equipment
Manufacturer Code:LOCAL
Tool Number:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Manufacturer Code:LOCAL
Tool Number:Portable grinding equipment
Tool Name:Portablegrinding equipment
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