TASK 72-41-32-300-018 HPC Stage 6 Variable Stator Vane - Restore The Surface Finish, Repair-018 (VRS6044)

DMC:V2500-A0-72-41-3206-00A-635A-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 72-41-32-300-018 HPC Stage 6 Variable Stator Vane - Restore The Surface Finish, Repair-018 (VRS6044)

Effectivity

FIG/ITEM PART NO.

DELETED

05-500

6A3699

05-500

6A3763

DELETED

05-600

6A3752

05-600

6A3764

Material of component

RR

DESCRIPTION SYMBOL MATERIAL

HP Compressor stage 6

variable stator vane

EAX

or

Corrosion resistant steel

HP Compressor stage 6

variable stator vane

QMP

52 per cent Nickel,

19 per cent Chromium,

18 per cent Iron and

5 per cent Niobium

General

The vanes must have had all other repairs completed and be serviceable, refer to TASK 72-41-32Inspection/Check.

This Repair gives the procedure to glass bead peen the HP. compressor stage 6 variable stator vanes.

The vanes can only have this Repair completed on them three times.

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 Variable Stator Vane - Restore the Surface Finish by Vibro-Polishing. Refer to TASK 72-41-32-300-010 (VRS6079).

NOTE

More equipment and materials necessary to do this Repair are given in the SPM TASK 70-09-00-400-501, SPM TASK 70-11-01-300-503 and SPM TASK 70-38-04-300-503.

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Chemical cleaning equipmentLOCALChemical cleaning equipment
Abrasive blast equipmentLOCALAbrasive blast equipment
Surface measuring equipmentLOCALSurface measuring equipment
Glass bead peening equipmentLOCALGlass bead peening equipment
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-001 ADHESIVE TAPE (MASKING)LOCALCoMat 02-001
CoMat 02-003 ADHESIVE TAPE BLACK WATERPROOFLOCALCoMat 02-003
CoMat 01-293 GLASS BEADSLOCALCoMat 01-293
CoMat 05-003 ABRASIVE MEDIUM ALUMINUM OXIDE, 120/220 GRADELOCALCoMat 05-003

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-32-220-118 Make sure the Variable Stator Vanes can be Glass Bead Peened

    1. Refer to Figure.

      2. Examine the vane spindle to find if VRS6044 has been completed before (look for the repair identification symbol).

      1. If the repair identification symbol and /2 is engraved adjacent to the part number, the vane cannot be glass bead peened.

    3. Examine the vanes to make sure all necessary repairs have been completed.

    2. SUBTASK 72-41-32-110-066 Clean the Variable Stator Vanes

      1. Chemically clean the vanes.

      1. Refer to the SPM TASK 70-11-01-300-503.

        Use chemical cleaning equipment.

    3. SUBTASK 72-41-32-120-052 Dry Abrasive Blast the Variable Stator Vanes to Remove Dressing or Etch Marks

    1. Refer to Figure.

      2. Apply masking tape to the vane spindle and areas not to be abrasive blasted.

      3. Dry abrasive blast the vane airfoil to remove dressing or etch marks.

      1. Refer to the SPM TASK 70-38-04-300-503, SUBTASK 70-38-04-300-001.

        NOTE

        A surface finish of 40 to 80 micro in., (1.0 to 2.0 microns) has to be achieved.

    4. Remove the masking tape.

      Abrasive Blast Data

      Dry abrasive blast

      Nozzle type

      Operator supply

      Nozzle flow

      36 cu. ft./minute (1.019cu.

      m./minute)

      Nozzle pressure

      65 to 75 p.s.i. (448 to 517.5 Kpa)

      Blast angle

      80 degrees

    4. SUBTASK 72-41-32-220-119 Examine the Variable Stator Vanes

    1. Refer to Figure, Figure and Figure.

      2. Visually examine the vane airfoil.

      1. Refer to the SPM TASK 70-38-04-300-503, SUBTASK 70-38-04-300-001.

        Make sure that all dressing marks are removed.

      3. Examine the surface finish of the vanes.

      1. A surface finish of 40 to 80 micro in., (1.0 to 2.0 microns) has to be achieved.

        Make sure the subsequent 'centreline average' (CLA) quality of finish is achieved.

        Use surface measuring equipment.

    5. SUBTASK 72-41-32-380-057 Restore the Airfoil Surface Finish of the Stage 6 Variable Stator Vanes

    1. Refer to Figure, Figure and Figure.

      2. Apply the adhesive tape to the vane spindle and areas not to be glass bead peened.

      3. Glass bead peen the vane airfoil, to restore surface finish.

      1. Refer to the SPM TASK 70-38-04-300-503, SUBTASK 70-38-04-300-002.

        Use CoMat 01-293 GLASS BEADS, to achieve an Almen intensity of 0.007 to 0.011 in. (0.177 to 0.279 mm), using test strip 'N'.

        Use glass bead peening equipment.

        Glass Bead Peening Data

        Dry glass bead peen

        Glass bead type

        Bead size

        0.0098 to 0.0165 in. (251 to 422

        microns) diameter

        Coverage

        200 per cent

        Nozzle type

        Operator supply

        Nozzle flow

        36 cu. ft./minute (1.019 cu.

        m./minute)

        Blast angle

        90 degrees

        Almen intensity

        0.007 to 0.011 in. (0.177 to

        0.279 mm), using test strip 'N'

    4. Remove the masking tape.

    6. SUBTASK 72-41-32-380-058 Vibro-Polish the Variable Stator Vane Airfoil

    1. Refer to Figure.

      2. Stage 6 variable stator vanes.

      1. Refer to VRS6079, TASK 72-41-32-300-010.

    7. SUBTASK 72-41-32-350-072 Identify the Repair

      CAUTION

      DO NOT VIBRO-ENGRAVE ON THE VANE AIRFOIL OR LOCATION FACES.

    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.

        If this is the first time this repair has been completed, on the vane, vibro-engrave the code symbol, adjacent to the assembly number.

        If this is the second time this repair has been completed, vibro-engrave /1 adjacent to the code symbol.

        If this is the third time this repair has been completed, vibro-engrave /2 adjacent to the code symbol.

        Use vibro-engraving equipment.

    8. Figure: Repair details and dimensions

    Repair details and dimensions

    Figure: Repair details and dimensions

    Repair details and dimensions

    Figure: Repair details and dimensions

    Repair details and dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 01-293
Type:sp01
Supply Short Name:CoMat 01-293 GLASS BEADS
Supply Name:CoMat 01-293 GLASS BEADS
Specification Groups:
Doc NumberType
OMAT:1/239SIZE NO.5 (0.0098 to 0.0165IN) CSS 8 VG300 AECMA prEN 2750
JCR-180SIZE NO.5 (0.0098 to 0.0165IN) CSS 8 VG300 AECMA prEN 2750
Suppliers:
ManufacturerRemarks
LOCAL
IE125
07852
IE301
K2769
Manufacturer Code:LOCAL
Supply Number:CoMat 02-001
Type:sp01
Supply Short Name:CoMat 02-001 ADHESIVE TAPE (MASKING)
Supply Name:CoMat 02-001 ADHESIVE TAPE (MASKING)
Specification Groups:
Doc NumberType
OMAT: 230 (RR REF)ZINC OXIDE AT142
JCR-197 (JAEC REF)ZINC OXIDE AT142
Suppliers:
ManufacturerRemarks
LOCAL
K6835
U0415
Manufacturer Code:LOCAL
Supply Number:CoMat 02-003
Type:sp01
Supply Short Name:CoMat 02-003 ADHESIVE TAPE BLACK WATERPROOF
Supply Name:CoMat 02-003 ADHESIVE TAPE BLACK WATERPROOF
Specification Groups:
Doc NumberType
OMAT: 285ISATAPE 160
Suppliers:
ManufacturerRemarks
LOCAL
IE305
K6835
Manufacturer Code:X222X
Supply Number:CoMat 05-003
Type:sp01
Supply Short Name:CoMat 05-003 ABRASIVE MEDIUM ALUMINUM OXIDE, 120/220 GRADE
Supply Name:CoMat 05-003 ABRASIVE MEDIUM ALUMINUM OXIDE, 120/220 GRADE
Specification Groups:
Doc NumberType
Use one of the CoMat 05-003 letter suffix alternatives.
Suppliers:
ManufacturerRemarks
X222X
Link not Found
Manufacturer Code:LOCAL
Tool Number:Chemical cleaning equipment
Tool Name:Chemical cleaning equipment
Manufacturer Code:LOCAL
Tool Number:Glass bead peening equipment
Tool Name:Glass bead peening equipment
Manufacturer Code:LOCAL
Tool Number:Surface measuring equipment
Tool Name:Surface measuring equipment
Link not Found