TASK 72-32-23-300-001 HPC Front Shaft Assembly - Blend Repair, Repair-001 (VRS6124)

DMC:V2500-A0-72-32-2302-00A-649A-C|Issue No:001.00|Issue Date:2014-05-01

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 72-32-23-300-001 HPC Front Shaft Assembly - Blend Repair, Repair-001 (VRS6124)

Effectivity

FIG/ITEM

PART NO.

01-745

6A2914

01-745

6A2940

01-745

6A3888

01-745

6A3899

01-745

6A4147

01-745

6A8083

01-745

6A8094

Material of component

PART IDENT

SYMBOL

MATERIAL

HP Compressor Front Stubshaft

TEG

Titanium aluminum vanadium alloy

General

This TASK gives the procedure to repair the HP Compressor Front Stubshaft by Dressing.

This repair must only be done when the instruction to do so is given in TASK 72-32-23-200-000 (INSPECTION-000).

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

Price and availability

Related repairs

HP Compressor Front Stubshaft - Repair the Curvic Teeth by Dressing, refer to Repair VRS6125, TASK 72-32-23-300-002 (REPAIR-002).

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
Workshop inspection equipmentLOCALWorkshop inspection equipment
Chemical cleaning equipmentLOCALChemical cleaning equipment
BinocularsLOCALBinoculars

x10

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-020 WATERPROOF SILICON CARBIDELOCALCoMat 05-020
CoMat 05-021 WATERPROOF SILICON CARBIDE44197CoMat 05-021
CoMat 05-106 ABRASIVE STONEK6835CoMat 05-106

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-23-230-053-001 Do a Crack Test

      1. Do a penetrant crack test.

      1. Refer to the SPM TASK 70-23-03-230-501.

      2. Use Penetrant crack test equipment.

      3. Cracks are not permitted.

    2. SUBTASK 72-32-23-350-051 Remove the Damage

    1. Refer to Figure, Figure and Figure.

      2. CAUTION

        TITANIUM COMPONENT - YOU MUST USE SILICON CARBIDE TYPE ABRASIVE WHEELS, STONES AND PAPERS TO DRESS, BLEND AND POLISH THIS COMPONENT. ALUMINIUM OXIDE TYPE MUST NOT BE USED. IF MECHANICAL CUTTERS ARE USED, ONLY LIGHT CUTS MUST BE MADE TO AVOID OVERHEATING THE MATERIAL.
        TITANIUM COMPONENT - AVOID BUILD UP OF HEAT BY APPLYING ONLY GENTLE PRESSURE AND KEEPING THE TOOL SPEED AS LOW AS POSSIBLE. USE TECHNIQUES WHICH ALLOW FOR PROGRESSIVE WEAR OF THE DRESSING MEDIA TO PRESENT A CONTINUALLY FRESH CUTTING SURFACE TO THE WORK PIECE.
        DO NOT DWELL ON ONE AREA OF THE COMPONENT.
        DRESS, WHERE POSSIBLE, IN A CIRCULAR MOTION; TAKING LIGHT CUTS TO AVOID OVERHEATING.
        TITANIUM COMPONENT - YOU MUST MAKE SURE THAT WHEN YOU REMOVE MATERIAL, BLEND AND POLISH, TO MAKE SMOOTH, THAT NO SPARKS ARE PRODUCED AND THE ADJACENT AREA IS MASKED OFF.
        TITANIUM COMPONENT - IF THE MATERIAL SHOWS A CHANGE IN COLOR DURING DRESSING, TO DARKER THAN A LIGHT STRAW COLOR, THE COMPONENT IS TO BE REJECTED.

        Remove high metal and small areas of damage except at the corner edges of inner surface.

      1. Refer to the SPM TASK 70-35-03-300-501.

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

      4. The repaired area is to be 50 times the depth.

      5. Do not remove material from the areas specified AB.

      3. Remove small areas of damage at the corner edges of inner surface as necessary.

      1. Refer to the SPM TASK 70-35-03-300-501.

      3. The circumferential length of the repaired area is to be 50 times the depth.

      4. Blend the repaired area as necessary.

      1. Refer to the SPM TASK 70-35-03-300-501.

      5. Polish the repaired area.

      1. Refer to the SPM TASK 70-35-03-300-501.

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

    3. SUBTASK 72-32-23-220-121 Do a Swab Etch

      1. Chemically clean.

      1. Refer to the SPM TASK 70-11-08-300-503, SUBTASK 70-11-08-300-001.

      2. Use chemical cleaning equipment.

      2. Swab etch the repaired area(s).

      1. Refer to the SPM TASK 70-11-08-300-503, SUBTASK 70-11-08-300-002.

      2. Use chemical cleaning equipment.

    4. SUBTASK 72-32-23-220-067 Examine the Repaired Area

    1. Refer to Figure, Figure and Figure.

      2. Do a visual and dimensional inspection.

      2. Indications of surface defects including galls, nicks, dents, pits, scratches, burrs, sharp edges and a change in color to a darker than light straw color are not permitted.

      3. Make sure the surface finish is the same as the adjacent material.

      4. The maximum depth of the repair must not be more than the given limits.

      5. Use workshop inspection equipment.

    5. SUBTASK 72-32-23-230-054-001 Do a Crack Test

      1. Do a penetrant crack test.

      1. Refer to the SPM TASK 70-23-04-230-501.

      3. Cracks are not permitted.

    6. SUBTASK 72-32-23-350-019 Identify the Repair

      1. Mark VRS6124 adjacent to the part number.

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

      2. Use vibrating marking pencil.

    7. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    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

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: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 05-020
Type:sp01
Supply Short Name:CoMat 05-020 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-020 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/33 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 320 (ANSI B74.18)
JCR-027 (JAEC REF)
JCR-186 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
LOCAL
K6835
Manufacturer Code:1E1X8
Supply Number:CoMat 05-021
Type:sp01
Supply Short Name:CoMat 05-021 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-021 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/35 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 240 (ANSI B74.18 )
JCR-188 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
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
Tool Number:Binoculars
Tool Name:Binoculars
Manufacturer Code:LOCAL
Tool Number:Chemical cleaning equipment
Tool Name:Chemical cleaning equipment
Manufacturer Code:LOCAL
Tool Number:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment