TASK 72-41-13-300-005 HPC Rear Shaft Heatshield - Replace The Metal Sprayed Coating, Repair-005 (VRS6380)

DMC:V2500-A0-72-41-1302-00A-609A-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 72-41-13-300-005 HPC Rear Shaft Heatshield - Replace The Metal Sprayed Coating, Repair-005 (VRS6380)

Effectivity

FIG/ITEM

PART NO.

01-875

6A1494

01-875

6A7400

Material of component

PART IDENT

SYMBOL

MATERIAL

HP Compressor Rear Shaft Heatshield Assembly

QAH and QAR

or

QNK and QTE

Nickel based heat resistant alloy

General

This Repair must only be done when the instruction to do so is given in 72-41-13 Inspection.

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

Price and availability

Refer to International Aero Engines

Related repairs

None.

NOTE

  1. Equivalent materials or equipment can be used.

  2. More equipment and materials necessary to do this Repair are in the SPM TASKS that follow:

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Chemical cleaning equipmentLOCALChemical cleaning equipment
Penetrant Crack Test EquipmentLOCALPenetrant crack test equipment
Grinding machineLOCALGrinding machine
Standard workshop equipmentLOCALStandard workshop equipment
Dial test indicatorsLOCALDial test indicators
Abrasive blast equipmentLOCALAbrasive blast equipment
Metal spray equipmentLOCALMetal spray equipment
Workshop inspection equipmentLOCALWorkshop inspection equipment
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADELOCALCoMat 01-025
CoMat 02-198 ADHESIVE TAPE (MASKING METAL SPRAY)LOCALCoMat 02-198
CoMat 03-036 METAL SPRAYING WIRE, Ni,AlLOCALCoMat 03-036
CoMat 05-001 ABRASIVE MEDIUM, ALUMINIUM OXIDE, 20/30 GRADELOCALCoMat 05-001

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-13-110-071 Chemically Clean

      1. Chemically clean.

      1. Refer to TASK 72-41-13-100-000 (CLEANING-000).

      2. Use chemical cleaning equipment.

    2. SUBTASK 72-41-13-230-085 Do a Crack Test

      1. Do a penetrant crack test.

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

        2. Use penetrant crack test equipment.

        1. Cracks are not permitted.

    3. SUBTASK 72-41-13-324-051 Grind the HP Compressor Heatshield Assy

    1. CAUTION

      THE LOCALLY MADE GRINDING FIXTURE MUST HOLD THE HEATSHIELD ASSEMBLY RIGID AT BOTH ENDS DURING THE GRINDING OPERATION.

      Refer to Figure and Figure.

      2. Install the grinding fixture into the grinding machine.

      1. Use a locally made grinding fixture and agrinding machine with standard workshop equipment.

      3. Install the HP Compressor Heatshield Assembly into the grinding fixture and set to turn correctly.

      1. Use standard workshop equipment and a dial test indicator.

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

      4. NOTE

        Any metal spray coating that remains will be removed by the following SUBTASK, refer to Step

        Grind the HP Compressor Heatshield Assembly to remove most of the metal spray coating.

      1. Do not remove any parent material other than the metal sprayed coating.

    4. SUBTASK 72-41-13-330-056 Chemically Remove the Metal Spray Coating that Remains

    1. Refer to Figure and Figure.

      2. Remove the metal spray coating that remains.

      1. Refer to the SPM TASK 70-33-59-300-503, SUBTASK 70-33-59-300-002.

      2. Use CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE with chemical cleaning equipment.

      3. Put the assembly into the nitric acid and keep below surface until the bubbles stop.

    5. SUBTASK 72-41-13-220-148 Examine the Surface for Repair

    1. Refer to Figure and Figure.

      2. Visually examine.

      1. Make sure all the metal spray coating has been removed.

      2. If not, do Step again as necessary.

    6. SUBTASK 72-41-13-230-076 Do a Crack Test

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

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

        2. Use penetrant crack test equipment.

        1. Cracks are not permitted.

    7. SUBTASK 72-41-13-220-149 Examine the Surface for Repair

    1. Refer to Figure and Figure.

      2. Visually examine and measure the dimensions of the repaired surface.

        1. Use standard workshop equipment.

        1. The thickness of the repaired area must not be less than 0.027 in. (0.686 mm).

    8. SUBTASK 72-41-13-350-071 Seal the Surfaces Not to be Repaired

    1. Refer to Figure and Figure.

      2. Seal the surfaces not to be repaired.

      1. NOTE

        The adhesive tape (masking metal spray), permits the blasting and sprayed coating to be done in one operation.

    9. SUBTASK 72-41-13-120-051 Prepare Surface for Repair

      1. CAUTION

        DO NOT TOUCH AREAS TO BE REPAIRED AFTER THEY ARE CLEANED.
        TOO MUCH ABRASIVE BLAST CAN CAUSE DETERIORATION OF THE REPAIRED SURFACE CONDITION AND MUST BE PREVENTED.

        Lightly dry blast to prepare the surface for the sprayed coating.

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

    10. SUBTASK 72-41-13-340-054 Metal Spray the Surface for Repair

    1. Refer to Figure and Figure.

      2. Apply the metal spray.

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

      2. Use CoMat 03-036 METAL SPRAYING WIRE, Ni,Al with metal spray equipment.

      3. Use a locally made metal spray fixture.

      4. Apply sufficient metal spray to get the correct dimensions after grinding.

    3. Remove the masking tape.

    11. SUBTASK 72-41-13-220-150 Examine

      1. Visually examine the sprayed coating.

      1. Refer to the SPM TASK 70-34-01-340-501, SUBTASK 70-34-01-340-002.

    12. SUBTASK 72-41-13-324-052 Grind the HP Compressor Heatshield Assembly

    1. CAUTION

      THE LOCALLY MADE GRINDING FIXTURE MUST HOLD THE HEATSHIELD ASSEMBLY RIGID AT BOTH ENDS DURING THE GRINDING OPERATION.

      Refer to Figure and Figure.

      2. Install the grinding fixture into the grinding machine.

      1. Use a locally made grinding fixture and a grinding machine with standard workshop equipment.

      3. Install the HP Compressor Heatshield Assembly into the grinding fixture and set to turn correctly.

      1. Use standard workshop equipment and a dial test indicator.

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

    4. NOTE

      Do not remove the HP Compressor Heatshield Assembly from the grinding fixture until the machined diameter has been examined, refer to Step

      Grind the HP Compressor Heatshield Assembly.

    13. SUBTASK 72-41-13-220-151 Examine the Repaired Surface

    1. Refer to Figure and Figure.

      2. Visually examine and measure the dimensions of the repaired surface.

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

      2. Use workshop inspection equipment with X10 magnification.

      3. Remove the assembly from the grinding fixture.

      1. Use standard workshop equipment.

    14. SUBTASK 72-41-13-110-060 Chemically Clean

      1. Chemically clean.

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

      2. Use chemical cleaning equipment.

    15. SUBTASK 72-41-13-350-072 Identify the Repair

      1. Make a mark VRS6380 adjacent to the part number.

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

    16. 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:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:5FCA4
Supply Number:CoMat 01-025
Type:sp01
Supply Short Name:CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE
Supply Name:CoMat 01-025 NITRIC ACID HNO3, TECHNICAL GRADE
Specification Groups:
Doc NumberType
orTECHNICAL GRADE SP.GR. 1.42 NITRIC ACID
orTECHNICAL GRADE 42 BAUME NITRIC ACID
TECHNICAL GRADE 67.5 WT% NITRIC ACID
Suppliers:
ManufacturerRemarks
5FCA4
K6835
LOCAL
U0PR4
U0SV8
U6726
V272V
Manufacturer Code:07512
Supply Number:CoMat 02-198
Type:sp01
Supply Short Name:CoMat 02-198 ADHESIVE TAPE (MASKING METAL SPRAY)
Supply Name:CoMat 02-198 ADHESIVE TAPE (MASKING METAL SPRAY)
Specification Groups:
Doc NumberType
OMAT: 2/96 (RR REF)CHR 23816 TAPE
Suppliers:
ManufacturerRemarks
07512
K6835
K1369
KC622
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 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
Link not Found
Manufacturer Code:LOCAL
Tool Number:Chemical cleaning equipment
Tool Name:Chemical cleaning equipment
Link not Found
Link not Found
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
Link not Found
Link not Found
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment