TASK 72-41-13-300-004 HPC Rear Shaft Heatshield - Repair The Worn Or Damaged Location Diameter, Repair-004 (VRS6379)

DMC:V2500-A0-72-41-1302-00A-655A-C|Issue No:002.00|Issue Date:2017-11-01

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 72-41-13-300-004 HPC Rear Shaft Heatshield - Repair The Worn Or Damaged Location Diameter, Repair-004 (VRS6379)

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 base heat resistant alloy

General

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

This Repair restores the location diameter of the HP Compressor Rear Shaft Heatshield Assembly by metal spray.

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

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 given below:

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

Cylindrical

Standard workshop equipmentLOCALStandard workshop equipment
Dial test indicatorsLOCALDial test indicators
Abrasive blast equipmentLOCALAbrasive blast equipment
Plasma spray equipmentLOCALPlasma spray equipment
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-198 ADHESIVE TAPE (MASKING METAL SPRAY)LOCALCoMat 02-198
CoMat 03-265 NICKEL CHROMIUM ALUMINIUMPOWDERLOCALCoMat 03-265
CoMat 05-001 ABRASIVE MEDIUM, ALUMINIUM OXIDE, 20/30 GRADELOCALCoMat 05-001

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-13-110-069 Clean the HP Compressor Heatshield Assembly

      1. Chemically clean the assembly.

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

      2. Use chemical cleaning equipment.

    2. SUBTASK 72-41-13-230-083 Do a Crack Test

      1. Do a penetrant crack test on the assembly.

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

        2. Use penetrant crack test equipment.

        1. Cracks are not permitted.

    3. SUBTASK 72-41-13-324-059 Grind the HP Compressor Heatshield Assembly

    1. CAUTION

      DO NOT REMOVE MORE MATERIAL THAN IS NECESSARY.

      Refer to Figure.

      2. Install the fixture into the cylindrical grinding machine.

      1. Use a locally made grinding fixture.

      2. Use a cylindrical grinding machine and standard workshop equipment.

      3. Install the HP compressor rear shaft heatshield assembly on to the fixture and set to turn correctly.

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

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

      4. Grind the heatshield location diameter to remove all damage.

        1. Use a cylindrical grinding machine.

        1. Machine only the minimum quantity of material to remove scores or coating.

      5. NOTE

        If a plasma spray layer has been applied before, make sure all plasma spray is removed.

        Remove burrs.

      1. Use standard workshop equipment.

    4. SUBTASK 72-41-13-110-070 Clean the HP Compressor Heatshield Assembly

      1. Chemically clean the assembly.

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

      2. Use chemical cleaning equipment.

    5. SUBTASK 72-41-13-230-084 Do a Crack Test

      1. Do a penetrant crack test on the heatshield location diameter.

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

        2. Use penetrant crack test equipment.

        1. Cracks are not permitted.

    6. SUBTASK 72-41-13-220-162 Examine the HP Compressor Heatshield Assembly

    1. Refer to Figure.

      2. Measure the dimensions of the heatshield location diameter.

      1. Use workshop inspection equipment.

      2. Keep this dimension for use with Step

    7. SUBTASK 72-41-13-340-055 Apply the Plasma Spray to the Surface(s) to be Repaired

    1. CAUTION

      DO NOT TOUCH SURFACE(S) TO BE REPAIRED AFTER THEY ARE CLEANED.

      CAUTION

      TOO MUCH ABRASIVE BLAST CAN CAUSE DETERIORATION OF THE REPAIRED SURFACE CONDITION AND MUST BE PREVENTED.

      Refer to Figure.

      2. Seal areas not to be repaired.

      1. NOTE

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

      3. Lightly dry blast to prepare the surface for the plasma spray.

      1. Refer to the SPM TASK 70-34-01-340-501, SUBTASK 70-34-01-340-001.

      3. The maximum abrasive blast air pressure must not be more than 60 psi (414 kPa).

      4. NOTE

        When plasma spray equipment is used, the CoMat 03-265 NICKEL CHROMIUM ALUMINIUMPOWDER is self-bonding.

        Apply the plasma spray to the heatshield location diameter, at position AB.

      1. Refer to the SPM TASK 70-34-01-340-501, SUBTASK 70-34-01-340-018.

      2. Use CoMat 03-265 NICKEL CHROMIUM ALUMINIUMPOWDER with plasma spray equipment.

      3. Apply sufficient metal spray powder, to get the correct dimensions when machined, refer to Step

    5. Remove the masking tape.

    8. SUBTASK 72-41-13-220-163 Visually Examine

    1. Refer to Figure.

      2. Visually examine the plasma sprayed coat.

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

    9. SUBTASK 72-41-13-324-060 Grind the HP Compressor Heatshield Assembly

    1. Refer to Figure and Figure.

      2. Install the fixture into the cylindrical grinding machine.

      1. Use a locally made grinding fixture.

      2. Use a cylindrical grinding machine and standard workshop equipment.

      3. Install the HP compressor rear shaft assembly on to the fixture and set to turn correctly.

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

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

      4. Machine the heatshield location diameter.

      1. Use a cylindrical grinding machine.

      5. NOTE

        You must remove all unwanted plasma spray from the adjacent area(s).

        Remove burrs.

      1. Use standard workshop equipment.

    10. SUBTASK 72-41-13-110-070 Clean the HP Compressor Heatshield Assembly

      1. Chemically clean the assembly.

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

      2. Use chemical cleaning equipment.

    11. SUBTASK 72-41-13-220-164 Examine the HP Compressor Assembly

    1. Refer to Figure, Figure and Figure.

      2. Make a visual inspection and measure the dimensions of the heatshield location diameter, at position AB and the adjacent areas.

      1. Use workshop inspection equipment.

    12. SUBTASK 72-41-13-350-077 Identify the Repair

      1. Make a mark VRS6379 adjacent to the assembly number.

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

      2. Use vibrating marking pencil.

    13. Figure: Repair details and dimensions

    Repair details and dimensions

    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
Change Type:

Corrected link for SPM Task 70-11-03-300-503 per REA17VC131

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
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 03-265
Type:sp01
Supply Short Name:CoMat 03-265 NICKEL CHROMIUM ALUMINIUM POWDER
Supply Name:CoMat 03-265 NICKEL CHROMIUM ALUMINIUMPOWDER
Specification Groups:
Doc NumberType
METCO 443-NS MIL-P-85856/21 MSRR9507/14
METCO 443-NS MIL-P-85856/21OMAT:3/135
Suppliers:
ManufacturerRemarks
LOCAL
39918
IE103
IE195
IE200
K1030
K6835
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:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Manufacturer Code:LOCAL
Tool Number:Plasma spray equipment
Tool Name:Plasma spray equipment
Link not Found
Link not Found