TASK 72-41-21-300-001 HPC Front Support Cone - Repair Surface Damage, Repair-001 (VRS6091)

DMC:V2500-A0-72-41-2101-00A-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 72-41-21-300-001 HPC Front Support Cone - Repair Surface Damage, Repair-001 (VRS6091)

Effectivity

FIG/ITEM PART NO.

03-300

6A2849

03-300

6A4177

Material of component

PART IDENT

SYMBOL

MATERIAL

HP compressor front support case

TBS

Titanium Aluminum Molybdenum alloy

General

This repair must only be done when the instruction to do so is given in 72-41-21 Inspection/Check, (72-41-21 INSPECTION/CHECK-00)

This repair can be done locally or the full 360 degrees all round the component, to the limits in Figure

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

NOTE

  1. Equivalent materials or equipment can be used.

  2. More equipment and materials necessary to do this repair are given in TASKS.

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
Portablegrinding equipmentLOCALPortable grinding equipment
Penetrant Crack Test EquipmentLOCALPenetrant crack test 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

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-21-350-051 Remove the Damage

    1. Refer to 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.

        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, 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.

        Remove the damage/wear from the heatshield location on the HP Compressor Front Support Cone.

      1. Refer to Figure.

        Use CoMat 05-106 ABRASIVE STONE and CoMat 05-021 WATERPROOF SILICON CARBIDE with portable grinding equipment, as necessary.

        Make sure the damage/wear is completely removed and the area is made smooth into the adjacent material.

        Remove only the minimum amount of material.

        The maximum depth to remove the damage/wear must not be more than 0.015in. (0.381 mm).

      3. NOTE

        This Repair can be done locally or the full 360 degrees all round the component, to the limits in Figure.

        Remove damage from the other area(s).

      1. Refer to Figure.

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

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

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

      4. Polish the area of repair.

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

    2. SUBTASK 72-41-21-220-189 Examine the Repair

    1. Refer to Figure and Figure.

      2. Visually examine and measure the dimensions of the heatshield location.

      1. Refer to Figure.

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

        The maximum depth of the repair must not be more than 0.015in. (0.381 mm).

        The minimum length of material removal after repair is 1.000in. (25.40 mm) and can be a maximum of 360 degrees around the component.

      3. Visually examine and measure the dimensions of the other repaired area(s).

      1. Refer to Figure.

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

        The maximum depth of the repair must not be more than 0.005in. (0.13 mm).

        The diameter of the repair must not be more than 0.250in. (6.25 mm).

    3. SUBTASK 72-41-21-230-071-001 Do a Crack Test

      1. Do a penetrant crack test.

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

        Use penetrant crack test equipment.

    4. SUBTASK 72-41-21-230-071-002 Do a Crack Test

      1. Do a penetrant crack test.

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

        Use penetrant crack test equipment.

    5. 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
Manufacturer Code:LOCAL
Tool Number:Portable grinding equipment
Tool Name:Portablegrinding equipment
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment