TASK 72-41-21-300-002 HPC Stage 7 Rotor Path Ring - Repair Surface Damage (And Cone Assembly) By Material Removal, Repair-002 (VRS6092)

DMC:V2500-A0-72-41-2120-00A-649A-C|Issue No:003.00|Issue Date:2018-08-01

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 72-41-21-300-002 HPC Stage 7 Rotor Path Ring - Repair Surface Damage (And Cone Assembly) By Material Removal, Repair-002 (VRS6092)

Effectivity

FIG/ITEM

PART NO.

ASSEMBLY

03-300

6A6540

C

03-300

6A7577

C

03-300

6B1430

D

03-450

6A3651

A

03-450

6A4101

A

03-450

6A4161

B

03-450

6A5992

A

03-450

6A5995

B

03-450

6A7623

B

03-450

6A7626

A

Material of component

PART IDENT

MATERIAL

HP Compressor Stage 7 Rotor Path Ring (and Cone Assembly)

Corrosion resistant steel

General

This Repair must only be done when the instruction to do so is given in inspection procedures (identified by the applicable part number) located in section 72-41-21.

This TASK gives the procedure to repair to remove surface damage on the HP Compressor Stage 7 Rotor Path Ring (and Cone Assembly) by material removal.

TASKS identified by SPM TASK are in the Standard Practices Manual (SPM).

Price and availability

Refer to International Aero engines (IAE).

Related Repairs

HP Compressor Stage 7 Rotor Path Ring (and Cone Assembly) - Replace Surface Protection, refer to Repair, VRS6161 TASK 72-41-21-300-004.

NOTE

Equipment and materials necessary to do this repair are in the SPM TASKS given below:
SPM TASK 70-11-03-300-503
SPM TASK 70-11-26-300-503
SPM TASK 70-11-39-300-503
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 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
Chemical cleaning equipmentLOCALChemical cleaning equipment
Penetrant Crack Test EquipmentLOCALPenetrant crack test equipment
Standard workshop equipmentLOCALStandard workshop equipment
Workshop inspection equipmentLOCALWorkshop inspection equipment
LatheLOCALLathe
Jig boring machineLOCALJig boring machine
Dial test indicatorLOCALDial test indicator

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-106 ABRASIVE STONEK6835CoMat 05-106
CoMat 05-074 ALUMINIUM OXIDE ABRASIVE PAPER06565CoMat 05-074
CoMat 05-111 EMERY POLISHING PAPER06565CoMat 05-111
CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)LOCALCoMat 06-064
CoMat 07-037 CORROSION RESISTANT TOUCH-UP COATINGLOCALCoMat 07-037
CoMat 07-038 AIR DRYING ENAMELk3504CoMat 07-038

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-21-110-204 Chemically Clean

      1. Chemically clean the part.

      1. Refer to the SPM TASK 70-11-03-300-503.

    2. SUBTASK 72-41-21-350-076 Remove the Damage by Blending

    1. Refer to Figure, Figure and Figure.

      2. Remove the damage at locations 1 to 3, 1145, 1180 and all remaining surfaces as necessary.

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

      2. The diameter of the repaired areas is to be 50 times the depth. The maximum depth of the repaired areas is to be 0.028 in. (0.71 mm).

      3. Blend the area(s) of repair.

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

      2. Remove all sharp corners and sudden changes of the slope.

      4. Polish the area(s) of repair.

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

      2. Polish the repaired area and the areas made smooth.

      3. Make sure all the scratches are removed and the surface finish is the same as the adjacent material.

    3. SUBTASK 72-41-21-320-005 Remove the Damage to the Boltholes by Machining

      2. Machine the damage at the hole inner diameter at locations 4 and 1186 (Assembly A and Assembly B) and locations 4, 5, 6 and 7 (Assembly C and Assembly D) as necessary.

      1. Use vertical Lathe or Jig boring machine with locally sourced machining fixture.

      2. Set face to be machined, true to datums with Dial test indicator.

      3. Machine only damaged holes.

      4. Remove only the minimum amount of material required to remove damage, up to the maximum size.

      3. Re-introduce hole chamfers as necessary.

        1. In the following holes only:

        1. Boltholes 5 of Assembly C, front side only and location dowel hole of Assembly C, rear side only.

        2. Boltholes 6 of Assembly D, front side only.

      4. Remove sharp edges and/or burrs.

      1. Use hand tools.

    4. SUBTASK 72-41-21-110-263 Chemically Clean

      1. Chemically clean the part.

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

      2. Use chemical cleaning equipment.

    5. SUBTASK 72-41-21-220-223 Examine the Repaired Area

      2. Do a visual and dimensional inspection of the blend repaired area(s).

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

      2. Make sure the maximum depth of the repaired area at locations 1 to 3, 1145, 1180 and all remaining surfaces is not more than 0.028 in. (0.71 mm).

      3. Do a visual and dimensional inspection of the machined bolthole(s).

      1. Make sure the surface finish is 125 microinches (3.2 micrometers) or better.

      2. Make sure the holes are not larger than the maximum allowed diameter.

          1. If surface damage is removed.

          1. Continue with Step.

          2. If surface damage is not removed.

          1. Do the Step thru Step again.

    6. SUBTASK 72-41-21-110-264 Do a Swab Etch

      1. Chemically clean the part.

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

      2. Swab etch the repaired area(s).

      1. Refer to the SPM TASK 70-11-39-300-503, SUBTASK 70-11-39-300-001.

    7. SUBTASK 72-41-21-230-243 Do a Crack Test

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

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

      4. Cracks are not permitted.

    8. SUBTASK 72-41-21-380-055 Apply Surface Protection to Repaired Areas as necessary

      2. Apply surface protection to the repaired areas where the surface protection is removed.

      1. Refer to Repair, VRS6161 TASK 72-41-21-300-004 (REPAIR-004).

    9. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    Figure: Repair Details and Locations - Assembly A and Assembly B

    Repair Details and Locations - Assembly A and Assembly B

    Figure: Repair Details and Locations - Assembly C and Assembly D

    Repair Details and Locations - Assembly C and Assembly D

    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 C

    Repair Details and Dimensions - Assembly C

    Figure: Repair Details and Dimensions - Assembly C

    Repair Details and Dimensions - Assembly C

    Figure: Repair Details and Dimensions - Assembly C

    Repair Details and Dimensions - Assembly C

    Figure: Repair Details and Dimensions - Assembly D

    Repair Details and Dimensions - Assembly D

    Figure: Repair Details and Dimensions - Assembly D

    Repair Details and Dimensions - Assembly D

    Figure: Repair Details and Dimensions - Assembly D

    Repair Details and Dimensions - Assembly D

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised figure 8 to correct the bolthole diameter. (18VG032)

Manufacturer Code:06565
Enterprise Name:SAINT-GOBAIN ABRASIVES
BU Name:SAINT-GOBAIN ABRASIVES
P.O. Box:808
City:TROY
State:NY
Zip Code:12181
Country:USA
Phone Number:1-518-266-2200
Fax Number:1-518-266-2342
Internet:www.saintgobain.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
Link not Found
Manufacturer Code:44197
Supply Number:CoMat 05-074
Type:sp01
Supply Short Name:CoMat 05-074 ALUMINIUM OXIDE ABRASIVE PAPER
Supply Name:CoMat 05-074 ALUMINIUM OXIDE ABRASIVE PAPER
Specification Groups:
Doc NumberType
ANSI/CAMI GRIT SIZE 180 ALUMINIUM OXIDE ABRASIVE PAPER
Suppliers:
ManufacturerRemarks
44197
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:44197
Supply Number:CoMat 05-111
Type:sp01
Supply Short Name:CoMat 05-111 EMERY POLISHING PAPER
Supply Name:CoMat 05-111 EMERY POLISHING PAPER
Specification Groups:
Doc NumberType
FEPA GRIT SIZE P280 OR P240 EMERY POLISHING PAPER OR ALUMINUM OXIDE ABRASIVE PAPER
Suppliers:
ManufacturerRemarks
44197
K6835
KC1D9
LOCAL
Manufacturer Code:X222X
Supply Number:CoMat 06-064
Type:sp01
Supply Short Name:CoMat 06-064FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Supply Name:CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐064 letter suffix material with other CoMat 06‐064 letter suffix materials.Where CoMat 06‐064 is specified with no suffix, use one of the CoMat 06‐064 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:00BB6
Supply Number:CoMat 07-037
Type:sp01
Supply Short Name:CoMat 07-037 CORROSION RESISTANT TOUCH-UP COATING
Supply Name:CoMat 07-037 CORROSION RESISTANT TOUCH-UP COATING
Specification Groups:
Doc NumberType
PL.177 CERTIFIED MIL-C-81751
JCR-031 (JAEC REF)
Suppliers:
ManufacturerRemarks
00BB6
K6835
K3504
Manufacturer Code:00BB6
Supply Number:CoMat 07-038
Type:sp01
Supply Short Name:CoMat 07-038 AIR DRYING ENAMEL
Supply Name:CoMat 07-038 AIR DRYING ENAMEL
Specification Groups:
Doc NumberType
OMAT:7/22B (RR REF)IP9138 R1
JCR-029 (JAEC REF)
Suppliers:
ManufacturerRemarks
00BB6
K3504
Manufacturer Code:LOCAL
Tool Number:Chemical cleaning equipment
Tool Name:Chemical cleaning equipment
Manufacturer Code:LOCAL
Tool Number:Dial test indicator
Tool Name:Dial test indicator
Manufacturer Code:LOCAL
Tool Number:Jig boring machine
Tool Name:Jig boring machine
Manufacturer Code:LOCAL
Tool Number:Lathe
Tool Name:Lathe
Manufacturer Code:LOCAL
Tool Number:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Link not Found
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment