TASK 72-41-31-300-020 HPC Front Cases - Repair The Stage Linings, Repair-020 (VRS6500)

DMC:V2500-A0-72-41-3110-00A-609A-C|Issue No:004.00|Issue Date:2020-08-01

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 72-41-31-300-020 HPC Front Cases - Repair The Stage Linings, Repair-020 (VRS6500)

Effectivity

FIG/ITEM PART NO.

01-400

6A5470

01-400

6A4439

Material of component

PART IDENT

SYMBOL

MATERIAL

HP Compressor Front Case Assembly

TEG

Titanium Alloy

General

This Repair must only be done when the instruction to do so is given in 72-41-31 Inspection-002.

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

Make sure that all the cleaning and inspection procedures are done before this repair.

After this Repair the rotor path lining(s) will be machined to final dimensions during assembly.

Price and Availability

Refer to International Aero Engines.

Related repairs

None

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-036 METAL SPRAYING WIRE, Ni,AlLOCALCoMat 03-036
CoMat 03-057 ALUMINIUM ALLOY/POLYESTERCOMPOSITELOCALCoMat 03-057
CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5)33870CoMat 03-089

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-31-325-055-A00 Remove the Abradable Lining and Bond Coat, Assembly A

      NOTE

      Removal of the abradable lining and bond coat can be accomplished by either Step or Step.

    1. Refer to Figure, Figure, Figure and Figure.

      2. CAUTION

        TITANIUM COMPONENT - YOU MUST USE SILICON CARBIDE WHEELS, STONES AND ABRASIVE PAPERS TO REMOVE AND POLISH MATERIAL.
        TITANIUM COMPONENT - DO NOT USE FORCE WITH MECHANICAL CUTTERS OR THE MATERIAL BECOMES TOO HOT.
        TITANIUM COMPONENT - IF THE MATERIAL SHOWS COLOR CHANGE, BECAUSE OF HEAT, OTHER THAN LIGHT STRAW, THE COMPONENT MUST BE REJECTED.

        Ensure that both correlated half casings of the HP Compressor front case assembly are assembled together. Safety the HP Compressor front case assembly together with seven slave bolts, nuts and washer to each side.

      1. Do a concentricity check of the assembled casing.

    3. Machine to remove the defective abradable lining and bond coat. Refer to SPM TASK 70-34-01-340-501.

    4. Remove the defective abradable lining and bond coat using high pressure water blasting. Use a locally manufactured fixture Refer to SPM TASK 70-15-01-160-501.

    2. SUBTASK 72-41-31-325-055-B00 Remove the Abradable Lining and Bond Coat , Assembly B

      NOTE

      Removal of the abradable lining and bond coat can be accomplished by either Step or Step.

    1. Refer to Figure, Figure and Figure.

      2. CAUTION

        TITANIUM COMPONENT - YOU MUST USE SILICON CARBIDE WHEELS, STONES AND ABRASIVE PAPERS TO REMOVE AND POLISH MATERIAL.
        TITANIUM COMPONENT - DO NOT USE FORCE WITH MECHANICAL CUTTERS OR THE MATERIAL BECOMES TOO HOT.
        TITANIUM COMPONENT - IF THE MATERIAL SHOWS COLOR CHANGE, BECAUSE OF HEAT, OTHER THAN LIGHT STRAW, THE COMPONENT MUST BE REJECTED.

        Ensure that both correlated half casings of the HP Compressor front case assembly are assembled together. Safety the HP Compressor front case assembly together with seven slave bolts, nuts and washer to each side.

      1. Do a concentricity check of the assembled casing.

    3. Machine to remove the defective abradable lining and bond coat. Refer to SPM TASK 70-34-01-340-501.

    4. Remove the defective abradable lining and bond coat using high pressure water blasting. Use a locally manufactured fixture Refer to SPM TASK 70-15-01-160-501.

    3. SUBTASK 72-41-31-350-079 Disassemble the Casing

      1. Disassemble the casing assembly.

      1. Remove the seven slave bolts, nuts and washers from each side.

    2. NOTE

      Keep the two half casings together as a matched pair.

    4. SUBTASK 72-41-31-110-081 Do a Swab Etch

      1. Swab etch the repaired area(s).

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

    5. SUBTASK 72-41-31-220-206-A00 Examine the Repaired Area(s), Assembly A

    1. Refer to Figure, Figure, Figure and Figure.

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

      1. Make sure the damaged lining has been completely removed.

    6. SUBTASK 72-41-31-220-206-B00 Examine the Repaired Area(s), Assembly B

    1. Refer to Figure, Figure and Figure.

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

      1. Make sure the damaged lining has been completely removed.

    7. SUBTASK 72-41-31-230-079 Do a Crack Test

      1. Do a penetrant crack test of the repaired area(s).

      2. Cracks are not permitted.

    8. SUBTASK 72-41-31-110-082 Clean the Casings

      1. Chemically clean the casings.

    9. SUBTASK 72-41-31-350-080 Mask the Surfaces not to be Repaired

      1. Mask the surfaces not to be sprayed.

      1. Refer to SPM TASK 70-34-18-380-501.

    10. SUBTASK 72-41-31-120-060 Prepare the Area(s) to be Sprayed

      1. Prepare the area(s) to be sprayed.

      1. Refer to the SPM TASK 70-34-18-380-501.

      2. Remove the masks.

      1. Refer to the SPM TASK 70-34-18-380-501.

      2. Be careful not to touch prepared surfaces before plasma spraying.

    11. SUBTASK 72-41-31-350-081-A00 Assemble the Half Casings, Assembly A

    1. Refer to Figure.

      2. Assemble together, both correlated half casings of the HP Compressor front case assembly.

      1. Safety together with seven slave bolts, nuts and washers to each side.

    3. Do a concentricity check of the assembled casing.

    12. SUBTASK 72-41-31-350-081-B00 Assemble the Half Casings, Assembly B

    1. Refer to Figure and Figure.

    2. Assemble together, both correlated half casings of the HP Compressor front case assembly. Safety together with seven slave bolts, nuts and washers to each side.

    3. Do a concentricity check of the assembled casing.

    13. SUBTASK 72-41-31-350-082 Mask the Surfaces not to be Repaired

      1. Mask the area(s) not to be repaired.

      1. Refer to the SPM TASK 70-34-18-380-501.

    14. SUBTASK 72-41-31-340-055-A00 Apply the Abradable Lining, Assembly A

    1. Refer to Figure, Figure, Figure and Figure.

      2. Apply the bond coat.

      1. Refer to the SPM TASK 70-34-01-340-501, SUBTASK 70-34-01-340-025 and/or SUBTASK 70-34-01-340-010.

      2. For powder feed plasma spray use CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5).

      3. Alternatively for wire feed combustion spray use CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5).

      4. Apply a thickness of 0.003 in. to 0.005 in (0.076 mm to 0.127 mm).

      3. Apply the abradable lining.

      1. Refer to the SPM TASK 70-34-01-340-501, SUBTASK 70-34-01-340-020.

    4. Remove the masks.

    15. SUBTASK 72-41-31-340-055-B00 Apply the Abradable Lining, Assembly B

    1. Refer to Figure, Figure and Figure.

      2. Apply the bond coat.

      1. Refer to the SPM TASK 70-34-01-340-501, SUBTASK 70-34-01-340-025 and/or SUBTASK 70-34-01-340-010.

      2. For powder feed plasma spray use CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5).

      3. Alternatively for wire feed combustion spray use CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5).

      4. Apply a thickness of 0.003 to 0.005 in (0.076 to 0.127 mm).

      3. Apply the abradable lining.

      1. Refer to the SPM TASK 70-34-01-340-501, SUBTASK 70-34-01-340-020.

    4. Remove the masks.

    16. SUBTASK 72-41-31-220-207-A00 Examine the Rotor Path Lining(s), Assembly A

    1. Refer to Figure, Figure, Figure and Figure.

      2. Visually examine the sprayed coating on the casings.

      1. Refer to the SPM TASK 70-34-01-340-501.

    3. Measure the repaired area(s).

      4. Do a hardness test on the sprayed coating.

      1. Refer to the SPM TASK 70-34-01-340-501.

      2. Average hardness must be 55 to 85 R15Y, outer limits 50 min, 90 max.

    17. SUBTASK 72-41-31-220-207-B00 Examine the Rotor Path Lining(s), Assembly B

    1. Refer to Figure, Figure and Figure.

      2. Visually examine the sprayed coating on the casings.

      1. Refer to the SPM TASK 70-34-01-340-501.

    3. Measure the repaired area(s).

      4. Do a hardness test on the sprayed coating.

      1. Refer to the SPM TASK 70-34-01-340-501.

      2. Average hardness must be 55 to 85 R15Y, outer limits 50 min, 90 max.

    18. SUBTASK 72-41-31-350-083 Disassemble the Casing

      1. Disassemble the casing assembly.

      1. Remove the seven slave bolts, nuts and washers from each side.

      2. NOTE

        Keep the two half casings together as a matched pair.

        Clean up the joint faces of the casings.

      1. Use a clean lint free cloth.

    19. SUBTASK 72-41-31-350-084 Identify the Repair

      1. Make a mark VRS6500 adjacent to the part number.

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

      2. Use vibropeen.

    20. SUBTASK 72-41-31-325-056-A00 Machine and Examine the Rotor Path Lining, Assembly A

      1. Machine and examine the rotor path lining.

    21. SUBTASK 72-41-31-325-056-B00 Machine and Examine the Rotor Path Lining, Assembly B

      1. Machine and examine the rotor path lining.

    22. Figure: Repair details and dimensions - Assy A

    Repair details and dimensions - Assy A

    Figure: Repair details and dimensions - Assy B

    Repair details and dimensions - Assy B

    Figure: Repair details and dimensions

    Repair details and dimensions

    Figure: Repair details and dimensions - Assy A

    Repair details and dimensions - Assy A

    Figure: Repair details and dimensions - Assy A

    Repair details and dimensions - Assy A

    Figure: Repair details and dimensions - Assy B

    Repair details and dimensions - Assy B

    Figure: Repair details and dimensions - Assy B

    Repair details and dimensions - Assy B

    Figure: Repair details and dimensions - Assy A

    Repair details and dimensions - Assy A

    Figure: Repair details and dimensions - Assy A

    Repair details and dimensions - Assy A

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial XML tagging correction - non technical change (16VG015)

Manufacturer Code:33870
Enterprise Name:PRAXAIR SURFACE TECHNOLOGIES INC.
BU Name:PRAXAIR SURFACE TECHNOLOGIES INC.
Street:1500 POLCO STREET
City:INDIANAPOLIS
State:IN
Zip Code:46222
Country:USA
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 03-036
Type:sp01
Supply Short Name:CoMat 03-036 METAL SPRAYING WIRE, Ni, Al
Supply Name:CoMat 03-036 METAL SPRAYING WIRE, Ni,Al
Specification Groups:
Doc NumberType
MSRR 9507/101METCO 405 NS
OMAT:3/90MIL-W-6712 NI80
JCR-019
Suppliers:
ManufacturerRemarks
LOCAL
IE103
IE195
IE200
K1030
K6835
39918
Manufacturer Code:LOCAL
Supply Number:CoMat 03-057
Type:sp01
Supply Short Name:CoMat 03-057 ALUMINIUM ALLOY/POLYESTERCOMPOSITE
Supply Name:CoMat 03-057 ALUMINIUM ALLOY/POLYESTERCOMPOSITE
Specification Groups:
Doc NumberType
MSRR9507/15METCO 601NS
OMAT:3/143MIL-P-85856/22
JCR-022MIL-P-85856/22
Suppliers:
ManufacturerRemarks
LOCAL
39918
IE103
IE195
IE200
K1030
K6835
Manufacturer Code:33870
Supply Number:CoMat 03-089
Type:sp01
Supply Short Name:CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5)
Supply Name:CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5)
Specification Groups:
Doc NumberType
PWA 1337 (PW REF)NI-109 or NI-970 or AI 1037
Suppliers:
ManufacturerRemarks
33870