TASK 72-41-23-300-013 HPC Rear Outer Case - Restore The Rear Inside Location Diameter By Metal Spray, Repair-013 (VRS6339)

DMC:V2500-A0-72-41-2301-01A-609A-C|Issue No:003.00|Issue Date:2021-02-01

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 72-41-23-300-013 HPC Rear Outer Case - Restore The Rear Inside Location Diameter By Metal Spray, Repair-013 (VRS6339)

Effectivity

FIG/ITEM

PART NO.

ASSEMBLY

02-400

6A2949

A

02-400

6A3557

A

02-400

6A4154

A

02-400

6A5495

A

02-400

6A5682

B

02-400

6A8162

B

02-400

6B1427

B

Material of component

PART IDENT

MATERIAL

Compressor Rear Outer Case

Corrosion resistant steel

General

This repair must only be done when the instruction to do so is given in the relevant inspection procedures (identified by the applicable part number) located in section 72-41-23.

This TASK gives the procedure to repair the inside location diameter on the HP Compressor Rear Outer Case by metal spray.

TASKS identified by SPM TASK are in the Standard Practices and Processes 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 70-11-26-300-503
SPM TASK 70-12-02-120-501
SPM TASK 70-23-05-230-501
SPM TASK 70-34-01-340-501

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 overhaul Processes and Consumables Index (PCI).

NOTE

Other necessary consumable materials are referred to in the SPM TASKs

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Abrasive Blast EquipmentLOCALAbrasive Blast Equipment
Chemical cleaning equipmentLOCALChemical cleaning equipment
Dial Test IndicatorsLOCALDial Test Indicators
LatheLOCALLathe

or grinding machine

Metal spray equipmentLOCALMetal spray equipment
Penetrant Crack Test EquipmentLOCALPenetrant crack test equipment
Standard workshop toolsLOCALStandard workshop tools
Vibrating Marking PencilLOCALVibrating Marking Pencil
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-019 TAPE, ADHESIVE PAPER HEAT RESISTING MASKING76381CoMat 02-019
CoMat 02-047 TAPE, HEAT REFLECTIVE52152CoMat 02-047
CoMat 02-050 HIGH TEMPERATURE GLASS CLOTH TAPE76381CoMat 02-050
CoMat 03-248 METAL SPRAY POWDERLOCALCoMat 03-248
CoMat 05-001 ABRASIVE MEDIUM, ALUMINIUM OXIDE, 20/30 GRADELOCALCoMat 05-001
CoMat 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY)X222XCoMat 06-022

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-23-110-070 Clean the Compressor Case

      1. Chemically clean the HP Compressor Rear Outer Case.

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

    2. SUBTASK 72-41-23-230-075 Do a Crack Test

      1. Do a local penetrant crack test on the rear inside diameter, AB.

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

      4. Cracks are not permitted.

    3. SUBTASK 72-41-23-324-053 Machine the Case

    1. For Assembly A, refer to Figure and Figure. For Assembly B, refer to Figure and Figure.

      2. Machine the HP Compressor Rear Outer Case inside diameter, AB.

      1. Use a locally made machining fixture and a Dial Test Indicators.

      2. Make sure that datums A and B are set to turn correctly.

      3. Remove only the minimum amount of material to true up the inside diameter.

      4. Use a Lathe or grinding machine.

        NOTE

        If a metal spray layer is applied before, make sure all the metal spray is removed.

    4. SUBTASK 72-41-23-230-076 Do a Crack Test

      1. Do a local penetrant crack test on the rear inside diameter, AB.

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

      4. Cracks are not permitted.

    5. SUBTASK 72-41-23-220-126 Examine the Case

    1. For Assembly A, refer to Figure and Figure. For Assembly B, refer to Figure and Figure.

      2. Visually examine and measure the dimensions of the rear inside diameter, AB.

    6. SUBTASK 72-41-23-110-071 Clean the Compressor Case

      1. Chemically clean the HP Compressor Rear Outer Case.

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

    7. SUBTASK 72-41-23-350-074 Seal the Surfaces Not to be Repaired

    1. For Assembly A, refer to Figure and Figure. For Assembly B, refer to Figure and Figure.

      2. Seal the surfaces not to be repaired.

      1. Use CoMat 02-019 TAPE, ADHESIVE PAPER HEAT RESISTING MASKING or CoMat 02-047 TAPE, HEAT REFLECTIVE and CoMat 02-050 HIGH TEMPERATURE GLASS CLOTH TAPE. Refer to SPM TASK 70-34-18-380-501.

        NOTE

        The heat resistant paper masking tape permits the blasting and sprayed coating to be done in one operation.

    8. SUBTASK 72-41-23-120-054 Dry Blast the Repair Area

    1. For Assembly A, refer to Figure and Figure. For Assembly B, refer to Figure and Figure.

      2. Abrasive blast the surface to be repaired, at diameter AB.

      1. Refer to SPM TASK 70-12-02-120-501.

      4. Use the new masking tape, as necessary.

    9. SUBTASK 72-41-23-340-053 Apply the Metal Spray

    1. For Assembly A, refer to Figure and Figure and Figure. For Assembly B, refer to Figure, Figure and Figure.

      2. Apply metal spray to the rear inside diameter, AB.

      1. Refer to SPM TASK 70-34-01-340-501, SUBTASK 70-34-01-340-021.

      4. Apply sufficient metal spray to get final machining dimensions.

    3. Remove the masking tape.

    10. SUBTASK 72-41-23-324-054 Machine the HP Compressor Rear Outer Case

    1. For Assembly A, refer to Figure and Figure. For Assembly B, refer to Figure and Figure.

      2. Machine the rear outer case inside diameter, AB.

      1. Refer to SPM TASK 70-34-01-340-501, SUBTASK 70-34-01-340-003.

      2. Use a locally made machining fixture and Dial Test Indicators.

      3. Make sure that datums A and B are set to turn correctly.

      4. Use a Lathe or a grinding machine.

      3. Remove burrs and overspray.

    11. SUBTASK 72-41-23-230-077 Do a Crack Test

      1. Do a local penetrant crack test on the rear inside diameter, AB.

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

      4. Ignore cracks in the sprayed surface.

      5. Cracks are not permitted.

    12. SUBTASK 72-41-23-220-127 Examine the HP Compressor Rear Outer Case

    1. For Assembly A, refer to Figure and Figure. For Assembly B, refer to Figure and Figure.

      2. Visually examine and measure the dimensions of the rear inside diameter, AB.

    13. SUBTASK 72-41-23-350-075 Identify the Repair

      1. Make a mark VRS6339 adjacent to the part number.

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

    14. Figure: Repair Details and Dimensions - Assembly A and B

    Repair Details and Dimensions - Assembly A and B

    Figure: Repair Details and Dimensions - Assembly A

    Repair Details and Dimensions - Assembly A

    Figure: Repair Details and Dimensions - Assembly A

    Repair Details and Dimensions - Assembly A

    Figure: Repair Details and Dimensions - Assembly B

    Repair Details and Dimensions - Assembly B

    Figure: Repair Details and Dimensions - Assembly B

    Repair Details and Dimensions - Assembly B

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added consumable materials and revised the procedural step. (20VG180)

Manufacturer Code:52152
Enterprise Name:3M COMPANY
BU Name:3M CENTER
Department:INDUSTRIAL TAPE AND SPECIALTIES DIV.
Street:BUILDING 220-7W-03
City:ST. PAUL
State:MN
Zip Code:55144-1000
Country:USA
Phone Number:1-651-733-1110, 1-800-362-3550, 1-800-223-7427
Fax Number:1-651-737-4380
Internet:www.mmm.com, www.3m.com
Manufacturer Code:76381
Enterprise Name:3M COMPANY
BU Name:3M COMPANY
Department:3M CENTER
City:ST PAUL
State:MN
Zip Code:55144-1000
Country:USA
Phone Number:1-651-733-1110
Fax Number:1-651-733-9973
Internet:www.mmm.com
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:X222X
Enterprise Name:N/A – REFER TO APPLICABLE COMAT SUFFIX
Manufacturer Code:76381
Supply Number:CoMat 02-019
Type:sp01
Supply Short Name:CoMat 02-019 TAPE, ADHESIVE PAPER HEAT RESISTING MASKING
Supply Name:CoMat 02-019 TAPE, ADHESIVE PAPER HEAT RESISTING MASKING
Specification Groups:
Doc NumberType
OMAT: 2/40 (RR REF)SELLOTAPE 2595 SCAPA 2595 OR 3M HT214
JCR-201 (JAEC REF)SELLOTAPE 2595 SCAPA 2595 OR 3M HT214
Suppliers:
ManufacturerRemarks
76381
K3312
K6835
Manufacturer Code:X222X
Supply Number:CoMat 02-047
Type:sp01
Supply Short Name:CoMat 02-047 TAPE, HEAT REFLECTIVE
Supply Name:CoMat 02-047 TAPE, HEAT REFLECTIVE
Specification Groups:
Doc NumberType
If CoMat 02- 047 is specified with no suffix, use one of the CoMat 02-047 letter suffix alternative materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:X222X
Supply Number:CoMat 02-050
Type:sp01
Supply Short Name:CoMat 02-050 HIGH TEMPERATURE GLASS CLOTH TAPE
Supply Name:CoMat 02-050 HIGH TEMPERATURE GLASS CLOTH TAPE
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Supply Number:CoMat 03-248
Type:sp01
Supply Short Name:CoMat 03-248 METAL SPRAY POWDER
Supply Name:CoMat 03-248 METAL SPRAY POWDER
Specification Groups:
Doc NumberType
MSRR9507/35METCO 447 NS
OMAT:3/179MIL-P-85856/27
Suppliers:
ManufacturerRemarks
LOCAL
39918
K1030
K6835
IE103
IE195
IE200
Manufacturer Code:LOCAL
Supply Number:CoMat 05-001
Type:sp01
Supply Short Name:CoMat 05-001 ABRASIVE MEDIUM, ALUMINIUM OXIDE, 20/30 GRADE
Supply Name:CoMat 05-001 ABRASIVE MEDIUM, ALUMINIUM OXIDE, 20/30 GRADE
Specification Groups:
Doc NumberType
Use one of the CoMat 05-001 letter suffix alternatives.
Suppliers:
ManufacturerRemarks
LOCAL
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:Abrasive Blast Equipment
Tool Name:Abrasive Blast Equipment
Manufacturer Code:LOCAL
Tool Number:Chemical cleaning equipment
Tool Name:Chemical cleaning equipment
Manufacturer Code:LOCAL
Tool Number:Dial Test Indicators
Tool Name:Dial Test Indicators
Manufacturer Code:LOCAL
Tool Number:Lathe
Tool Name:Lathe
Manufacturer Code:LOCAL
Tool Number:Metal spray equipment
Tool Name:Metal spray equipment
Manufacturer Code:LOCAL
Tool Number:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Manufacturer Code:LOCAL
Tool Number:Standard workshop tools
Tool Name:Standard workshop tools
Manufacturer Code:LOCAL
Tool Number:Vibrating Marking Pencil
Tool Name:Vibrating Marking Pencil
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment