TASK 72-41-11-300-001 HPC Stage 3 - 8 Drum Disk - Blend Repair On The Curvic Teeth, Repair-001 (VRS6006)

DMC:V2500-A0-72-41-1101-00A-649A-C|Issue No:002.00|Issue Date:2015-05-01

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 72-41-11-300-001 HPC Stage 3 - 8 Drum Disk - Blend Repair On The Curvic Teeth, Repair-001 (VRS6006)

Effectivity

FIG/ITEM

PART NO.

SERVICE BULLETIN

01-200

6A3508

-

01-200

6A3648

-

01-200

6A3934

72-0035

01-200

6A3936

72-0035

01-200

6A4189

72-0130

01-200

6A4900

-

01-200

6A5467

72-0178

01-200

6A5592

72-0161

01-200

6A5594

72-0161

01-200

6A5659

72-0161

01-200

6A6473

72-0254

01-200

6A7379

72-0304

01-200

6A7380

72-0304

01-200

6A7382

72-0304

01-200

6A7383

72-0304

01-200

6A7384

72-0304

01-200

6A7385

72-0304

01-200

6A7401

72-0300

01-200

6A7705

72-0376

01-200

6A8236

72-0450

01-200

6A8316

72-0470

01-200

6A8318

72-0470

01-200

6A8350

72-0476

01-200

6B1379

72-0606

01-200

6B1380

72-0606

01-200

6B1381

72-0606

01-200

6B1382

72-0606

01-200

6B1383

72-0606

01-200

6B1384

72-0606

01-200

6B1385

72-0606

01-200

6B1386

72-0606

01-200

6B1387

72-0606

01-200

6B1391

72-0605

01-200

6B1392

72-0605

01-200

6B1393

72-0605

01-200

6B1401

72-0606

01-200

6B1402

72-0606

01-200

6B1403

72-0606

01-200

6B1404

72-0606

01-200

6B1405

72-0605

01-200

6B1406

72-0606

Material of component

DESCRIPTION

SYMBOL

MATERIAL

HP compressor stage 3 to 8 disks shaft assembly

Titanium alloy

General Data

This repair must only be done when the instruction to do so is given in 72-41-11 Inspection (Inspection).

The component can be polished to remove very light frettage and/or stains, if the metal removed is not more than the limits given in the inspection.

Dress the component for local removal of raised metal as far as possible. All raised metal must be removed.

Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service bulletin alpha variants refer to the IPC.

The practices and processes referred to in the procedure by the TASK/SUBTASK numbers are in the Standard Practices Manual (SPM).

Price and availability

Refer to International Aero Engines

Related repairs - none

NOTE

Equipment and materials necessary to do this repair are in the SPM TASKS given below:
SPM TASK 70-09-00-400-501
SPM TASK 70-11-08-300-503
SPM TASK 70-11-26-300-503
SPM TASK 70-23-05-230-501
SPM TASK 70-35-03-300-501

NOTE

It is possible that some materials in the Consumable Materials chart cannot be used for some or all of the necessary applications. Before you use the materials, make sure the types, quantities and applications of the materials necessary are legally permitted in your location. All persons must obey all applicable federal, state, local and provincial laws and regulations when it is necessary to work with these materials.

NOTE

To identify the consumable materials refer to the Consumable Materials Manual (CoMat).

NOTE

Other necessary consumable materials are referred to in the SPM TASKS.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Workshop inspection equipmentLOCALWorkshop inspection equipment
Penetrant Crack Test EquipmentLOCALPenetrant crack test equipment
Standard workshop equipmentLOCALStandard workshop equipment
Chemical cleaning equipmentLOCALChemical cleaning equipment
BinocularsLOCALBinoculars

10X

Vibro-engraving equipmentLOCALVibro-engraving equipment

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
CoMat 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY)LOCALCoMat 06-022

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-11-220-068 Examine the Curvic Teeth

    1. Refer to Figure.

      2. Do a visual and dimensional inspection to find the damage.

    2. SUBTASK 72-41-11-230-099 Do a Crack Test

      1. Do a local penetrant crack test on the area to be repaired.

      1. Refer to the SPM TASK 70-23-05-230-501.

      3. Cracks are not permitted.

    3. SUBTASK 72-41-11-350-051 Remove the Damage

      CAUTION

      TITANIUM COMPONENT - YOU MUST USE SILICON CARBIDE TYPE ABRASIVE WHEELS, STONES AND PAPERS TO DRESS, BLEND AND POLISH THIS COMPONENT.

      CAUTION

      TITANIUM COMPONENT - DO NOT USE FORCE WITH MECHANICAL CUTTERS OR THE MATERIAL WILL BECOME TOO HOT.

      CAUTION

      TITANIUM COMPONENT - MAXIMUM SPEED FOR MECHANICAL TOOLS MUST NOT EXCEED 1000 REVOLUTIONS PER MINUTE.

      CAUTION

      TITANIUM COMPONENT - YOU MUST MAKE SURE THAT WHEN YOU REMOVE MATERIAL, BLEND AND POLISH, TO MAKE SMOOTH, THAT NO SPARKS ARE PRODUCED.

      CAUTION

      TITANIUM COMPONENT - IF THE MATERIAL SHOWS A CHANGE IN COLOR, TO DARKER THAN A LIGHT STRAW COLOR, THE COMPONENT IS TO BE REJECTED.

    1. Refer to Figure.

      2. Dress the damaged area (refer to the limits given in Step).

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

      3. NOTE

        Each pair of radially adjacent flanks is one tooth divided in to two parts by the annular groove, ie four flanks in total.

        Limits.

        1. Dress any tooth if:

        1. Not more than 25 percent of the bedding surface area on one flank of a single tooth is damaged.

        2. When added together the total area of damage on one side of the teeth is not more than 15 percent of T.

          where T is the total area of the dressed teeth

          Example: T = X x W x n

          where X = bedding height

          W = face contact length

          n = number of teeth

      2. Damage in the roots of the teeth can be removed up to the annular groove depth but not beyond.

      4. Polish the area of repair.

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

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

    4. SUBTASK 72-41-11-110-086 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 repair area.

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

      2. Use chemical cleaning equipment.

    5. SUBTASK 72-41-11-220-235 Binocular Inspect

      1. Binocular inspect the repair area.

      1. Use 10x binoculars.

      2. Indications of surface defects are not permitted.

      3. Make sure that there is no raised metal remaining.

    6. SUBTASK 72-41-11-230-093 Do a Crack Test

      1. Do a local penetrant crack test of the repair area.

      1. Refer to the SPM TASK 70-23-05-230-501.

      2. No cracks are permitted.

    7. SUBTASK 72-41-11-110-087 Chemically Clean

      1. Chemically clean the repair area to remove fluorescent penetrant.

      1. Refer to the SPM TASK 70-11-26-300-503.

      2. Use chemical cleaning equipment.

    8. SUBTASK 72-41-11-220-069 Examine the Repaired Area

    1. Refer to Figure.

      2. Do a dimensional inspection.

      1. Refer to Step for the limits.

    9. SUBTASK 72-41-11-350-082 Identify the Repair

    1. Refer to Figure.

      2. Vibro-engrave VRS6006 adjacent to the part number.

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

      2. NOTE

        If the parts are already identified with the repair scheme number "VRS6006" from a before repair application, more identification is not necessary.

    10. 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
Change Type:

Revised the procedure and added applicable part numbers and Figure 902. (87VR776E)

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:X222X
Supply Number:CoMat 06-022
Type:sp01
Supply Short Name:CoMat 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY)
Supply Name:CoMat 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY)
Specification Groups:
Doc NumberType
ARDROX 985-P14 OMAT: 652 (CHEMETALL OAKITE 985-P14)It is not permitted to mix the selected CoMat 06‐022 letter suffix material with other CoMat 06‐022 letter suffix materials. Where CoMat 06‐022 is specified with no suffix, use one of the CoMat 06‐ 022 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
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
Link not Found
Manufacturer Code:LOCAL
Tool Number:Vibro-engraving equipment
Tool Name:Vibro-engraving equipment
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment