TASK 72-32-23-300-002 HPC Front Shaft Assembly - Blend Repair The Curvic Teeth, Repair-002 (VRS6125)

DMC:V2500-A0-72-32-2302-01A-649A-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 72-32-23-300-002 HPC Front Shaft Assembly - Blend Repair The Curvic Teeth, Repair-002 (VRS6125)

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

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 only 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 SPM.

Price and availability

Refer to International Aero Engines

Related repairs

HP Compressor Front Stubshaft - Repair the Surface Damage by Dressing, refer to Repair VRS6124, TASK 72-32-23-300-001 (REPAIR-001).

NOTE

Equivalent materials or equipment can be used.
More equipment and materials necessary to do this Repair are in TASK given below
SPM TASK 70-11-08-300-503
SPM TASK 70-23-01-300-501
SPM TASK 70-23-03-230-501
SPM TASK 70-23-04-230-501

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Workshop inspection equipmentLOCALWorkshop inspection equipment
Hand toolsLOCALTools, hand
Penetrant Crack Test EquipmentLOCALPenetrant crack test equipment
Vibrating marking pencilLOCALVibrating marking pencil

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 72-32-23-220-069 Examine the Curvic Teeth

    1. Refer to Figure.

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

      1. Use workshop inspection equipment.

    2. SUBTASK 72-32-23-230-075 Do a Crack Test

      1. Do a penetarant crack test.

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

      3. Cracks are not permitted.

    3. SUBTASK 72-32-23-350-053 Remove the Damage

    1. Refer to Figure.

      2. CAUTION

        TITANIUM COMPONENT - YOU MUST USE SILICON CARBIDE TYPE ABRASIVE WHEELS, STONES AND ABRASIVE PAPERS TO DRESS, BLEND AND POLISH THIS COMPONENT.
        TITANIUM COMPONENT - YOU MUST NOT USE ALUMINUM OXIDE ON THIS COMPONENT.
        TITANIUM COMPONENT - DO NOT USE FORCE WITH MECHANICAL CUTTERS OR THE MATERIAL WILL BECOME TOO HOT.
        TITANIUM COMPONENT - IF THE MATERIAL SHOWS A CHANGE IN COLOR, TO DARKER THAN A LIGHT STRAW COLOR, THE COMPONENT IS TO BE REJECTED.

        Dress the damaged area (refer to the limits given in step B.).

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

      2. NOTE

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

      3. 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 72-32-23-110-082 Swab Etch the Repair

      1. Solvent clean.

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

      2. Swab etch the repair.

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

    5. SUBTASK 72-32-23-230-057-001 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 72-32-23-220-070 Examine the Repair

    1. Refer to Figure and Figure.

      2. Do a dimensional inspection.

      1. Refer to Step for the limits.

      3. Do a visual inspection.

      1. Use binoculars X10.

      2. Indications of surface defects are not permitted.

      3. Make sure there is no raised metal remaining.

      4. Vibro-engrave VRS6125 adjacent to the part number.

    7. 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: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:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Link not Found
Link not Found
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment