TASK 72-32-71-300-024 LPC Bleed Valve Link Arms - Repair The Worn Surface Around The Sleeve By Plasma Spray, Repair-024 (VRS1324)

DMC:V2500-A0-72-32-7135-00A-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 72-32-71-300-024 LPC Bleed Valve Link Arms - Repair The Worn Surface Around The Sleeve By Plasma Spray, Repair-024 (VRS1324)

Effectivity

FIG/ITEM

PART NO.

01-100

5A3688

Material of component

PART IDENT

SYMBOL

MATERIAL

Link arm

Aluminum alloy (355,T6)

General

Price and availability - none

The practices and processes referred to in the procedure by the TASK number are in the SPM

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Milling machineLOCALMilling machine
Dry blast cabinetLOCALDry blast cabinet
Plasma spray facilityLOCALPlasma spray facility
Fluorescent Penetrant Inspection EquipmentLOCALFluorescent penetrant inspection equipment
Magnifying glass, 7xLOCALMagnifying glass, 7x
Vibrating marking pencilLOCALVibrating marking pencil
External micrometerLOCALExternal micrometer

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-001 ADHESIVE TAPE (MASKING)LOCALCoMat 02-001
CoMat 03-038 METAL SPRAYING POWDER NICKEL ALUMINIUM (95/5)IE200CoMat 03-038
CoMat 05-015 ABRASIVE MEDIUM, ALUMINUM OXIDELOCALCoMat 05-015
CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)LOCALCoMat 06-063

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-71-322-051 Machine the Damaged Surface Around Sleeve for the Link Arm Assembly

    1. Refer to Figure.

      2. Set-up and machine the damaged surface around sleeve of link arm to 0.381 in. (9.7 mm) minimum thickness.

        1. Machine only the minimum quantity of material to remove damage.

    2. SUBTASK 72-32-71-220-147 Examine the Machine Surface Around the Sleeve of the Link Arm Assembly

    1. Refer to Figure.

      2. Measure and record the machined surface around the sleeve of the link arm.

      1. Use external micrometer.

    3. SUBTASK 72-32-71-230-082 Examine the Link Arm Assembly for Cracks

      1. Do a fluorescent penetrant inspecion on the machined surface around the sleeve of the link arm.

    4. SUBTASK 72-32-71-340-051 Plasma Spray the Surface Around Sleeve of the Link Arm Assembly

    1. Refer to Figure.

      2. Apply masking tape to the area which are not to given plasma spray.

      3. Abrasive blast the surface around the sleeve.

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

      4. Renew masking if necessary.

      5. Plasma spray the surface around the sleeve.

        1. Apply the plasma spray to a sufficient thickness which will permit the final machining of 0.3859 to 0.3937 in. (9.80 to 10.00 mm).

        1. The maximum thickness of the plasma spray must be 0.015 in. (0.38 mm).

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

      6. Remove masking tape and any over spray coat.

      1. Use non-meallic hand scaper.

    5. SUBTASK 72-32-71-322-052 Machine the Surface Around the Sleeve of the Link Arm Assembly

    1. Refer to Figure.

      2. Set-up the link arm assembly.

      1. Use milling machine.

      3. Machine the surface around the sleeve of the link arm between 0.3859 and 0.3937 in. (9.80 and 10.00 mm).

        1. The minimum plasma spray coating thickness is 0.003 in. (0.076 mm).

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

    6. SUBTASK 72-32-71-220-148 Examine the Surface Around the Sleeve of the Link Arm Assembly

    1. Refer to Figure.

      2. Visually examine the coated area for chips, cracks, lifted material and coating that is not attached to the base metal.

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

      3. Dimensionally examine the surface around the sleeve.

      1. Refer to TASK 72-32-71-200-000 (INSPECTION-000).

    7. SUBTASK 72-32-71-350-083 Identify the Repair

      1. Write VRS1324 adjacent to the part number.

        1. Mark a permanent mark by the procedure given in the SPM TASK 70-09-00-400-501.

        1. Use a vibration peening method.

      2. Apply the chromate conversion coating to the marking.

      1. Refer to the SPM TASK 70-38-02-300-503 (SUBTASK 70-38-02-300-002).

    8. Figure: Repair details and machining dimensions - before plasma spray

    Repair details and machining dimensions - before plasma spray

    Figure: Repair details and dimensions - plasma spray area

    Repair details and dimensions - plasma spray area

    Figure: Repair details and finish machining dimensions - after plasma spray

    Repair details and finish machining dimensions - after plasma spray

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:IE200
Enterprise Name:DELETED, REFER TO CAGE CODE 00BB6
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 02-001
Type:sp01
Supply Short Name:CoMat 02-001 ADHESIVE TAPE (MASKING)
Supply Name:CoMat 02-001 ADHESIVE TAPE (MASKING)
Specification Groups:
Doc NumberType
OMAT: 230 (RR REF)ZINC OXIDE AT142
JCR-197 (JAEC REF)ZINC OXIDE AT142
Suppliers:
ManufacturerRemarks
LOCAL
K6835
U0415
Manufacturer Code:00BB6
Supply Number:CoMat 03-038
Type:sp01
Supply Short Name:CoMat 03-038 METAL SPRAYING POWDER NICKEL ALUMINIUM (95/5)
Supply Name:CoMat 03-038 METAL SPRAYING POWDER NICKEL ALUMINIUM (95/5)
Specification Groups:
Doc NumberType
OMAT: 3/188 (RR REF)METCO 450NS
JCR-020 (JAEC REF)
Suppliers:
ManufacturerRemarks
00BB6
01FK3
0Y7E4
C1840
IE103
K0455
K6835
Manufacturer Code:X222X
Supply Number:CoMat 05-015
Type:sp01
Supply Short Name:CoMat 05-015 ABRASIVE MEDIUM, ALUMINUM OXIDE
Supply Name:CoMat 05-015 ABRASIVE MEDIUM, ALUMINUM OXIDE
Specification Groups:
Doc NumberType
Where CoMat 05-015 is specified with no letter suffix, use one of the CoMat 05-015 letter suffix alternatives.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:X222X
Supply Number:CoMat 06-063
Type:sp01
Supply Short Name:CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)
Supply Name:CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐063 letter suffix material with other CoMat 06‐063 letter suffix materials. Where CoMat 06‐063 is specified with no suffix, use one of the CoMat 06‐063 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Tool Number:Dry blast cabinet
Tool Name:Dry blast cabinet
Link not Found
Manufacturer Code:LOCAL
Tool Number:Fluorescent penetrant inspection equipment
Tool Name:Fluorescent Penetrant Inspection Equipment
Link not Found
Manufacturer Code:LOCAL
Tool Number:Milling machine
Tool Name:Milling machine
Manufacturer Code:LOCAL
Tool Number:Plasma spray facility
Tool Name:Plasma spray facility
Link not Found