TASK 72-32-60-300-015 LPC Bleed Duct - Restore The Teflon Coating, Repair-015 (VRS1339)

DMC:V2500-A0-72-32-6001-00A-609A-C|Issue No:002.00|Issue Date:2014-05-01

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 72-32-60-300-015 LPC Bleed Duct - Restore The Teflon Coating, Repair-015 (VRS1339)

Effectivity

FIG/ITEM

PART NO.

01-250

5W2231

01-250

5W2268

01-250

5W2280

01-250

5W2318

01-250

5W2331

01-250

5W2332

Material of component

PART IDENT

SYMBOL

MATERIAL

LPC bleed duct assembly

Al-5Si-1.3Cu-0.5Mg

General

Price and availability - none

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

For the method to clean the parts, refer to TASK 72-32-60-100-000 (CLEANING-000).

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Hand held pneumatic grinderLOCALHand held pneumatic grinder

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-099 LINT-FREE CLOTHLOCALCoMat 02-099
CoMat 02-001 ADHESIVE TAPE (MASKING)LOCALCoMat 02-001
CoMat 02-006 ADHESIVE TAPE ALUMINIUM FOILK0993CoMat 02-006
CoMat 02-051 HIGH TEMPERATURE GLASS CLOTH TAPE0AM53CoMat 02-051
CoMat 02-198 ADHESIVE TAPE (MASKING METAL SPRAY)LOCALCoMat 02-198
CoMat 05-019 WATERPROOF SILICON CARBIDELOCALCoMat 05-019
CoMat 05-020 WATERPROOF SILICON CARBIDELOCALCoMat 05-020
CoMat 05-192 ALUMINUM OXIDE GRITIE531CoMat 05-192
CoMat 07-028 CHROMATE CONVERSION COATING FOR ALUMINUMLOCALCoMat 07-028
CoMat 07-164 BONDING PREVENTIVE - FLUOROCARBONRESIN23037CoMat 07-164

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-60-350-082 Remove the Damaged Seal from the LPC Bleed Duct Assembly

    1. Refer to Figure.

      2. Remove seal (but do not cause damage to the parent material) and remaining compound.

    2. SUBTASK 72-32-60-350-083 Prepare the Test Pieces

    1. Refer to Figure and Figure.

      2. Prepare test pieces.

      1. Refer to Figure and Figure.

    3. SUBTASK 72-32-60-350-084 Remove Teflon Coating

    1. Refer to Figure and Figure.

      2. Remove the damage, if required.

      1. Machine area C until all damage in area C is removed.

        Dress area A except area C and/or area B until all damage is removed.

        Use hand held pneumatic grinder.

        Make sure the dimensions of the repaired area satisfy the dimensions given in Figure and Figure.

        If not, reject the LPC bleed duct assembly.

      3. Mask areas which are not to be applied with Teflon coating.

      1. Use CoMat 02-001 ADHESIVE TAPE (MASKING) adhesive tape (Masking), CoMat 02-006 ADHESIVE TAPE ALUMINIUM FOIL, CoMat 02-198 ADHESIVE TAPE (MASKING METAL SPRAY) adhesive tape (Masking metal spray) and/or mechanical.

      4. Dry abrasive blast.

      1. Use a dry blast system cabinet.

        Use an air pressure of 87.02 psi (0.6 MPa) at approximate distance of 7.874 in. (200 mm) and 70 to 90 degree impingement angle from air nozzle to component surface.

    5. Remove masking tape.

      6. Remove abrasive grit that remains by vacuuming.

      1. Use a vacuum cleaner.

      7. Wipe blasted surfaces.

      8. Dry.

      1. NOTE

        After cleaning, the component must not be touched by hand and must be covered by craft paper, to prevent contamination.

        Air dry for 10 minutes minimum.

    4. SUBTASK 72-32-60-350-085 Restore Teflon Coating to LPC Bleed Duct Assembly and Test Pieces

    1. Refer to Figure, Figure and Figure.

      2. Mask areas which are not to be applied with Teflon coating.

      3. Spray first coat of Teflon on area A of LPC bleed duct assembly and test pieces.

      4. Dry.

      1. Air dry at room temperature for approximately 20 minutes.

      5. Cure.

      1. Use clean, dry air at 302 deg F (150 deg C) for approximately 20 minutes.

      6. Spray second coat of Teflon on area A of LPC bleed duct assembly and test pieces.

      7. Dry.

      1. Air dry at room temperature for approximately 20 minutes.

      8. Visually examine coating surface.

      1. Use 10x magnifying glass.

        Foreign inclusions are not permitted.

        Cracks are not permitted.

        Blisters are not permitted.

        Wrinkles are not permitted.

        Waviness is not permitted.

        Non-uniform coating surface is not permitted.

      9. Cure coating.

      1. Cure at 365 to 383 deg F (185 to 195 deg C) for 120 to 135 minutes.

    10. Remove masking tape from LPC bleed duct assembly.

    5. SUBTASK 72-32-60-350-086 Examine the Teflon Coating

    1. Refer to Figure and Figure.

      2. Examine test pieces.

      1. Refer to Figure and Figure.

        If test pieces are not acceptable, do step paragraph 5 again.

      3. Visually examine coating surface.

      1. Use 10x magnifying glass.

        Cracks are not permitted.

        Bubbles are not permitted.

        Foreign inclusions are not permitted.

        Peelings are not permitted.

        Blisters are not permitted.

        Wrinkles are not permitted.

        Waviness are not permitted.

      4. Examine coating thickness.

      1. Refer to the SPM TASK 70-25-00-250-501.

        0.001496 to 0.0025196 in. (0.038 to 0.064 mm) is permitted.

    6. SUBTASK 72-32-60-350-087 Install the Seal of LPC Bleed Duct Assembly

    1. Refer to Figure.

      2. Install the seal.

      1. Refer to TASK 72-32-60-300-013 (VRS1916) or TASK 72-32-60-300-014 (VRS1338).

    7. SUBTASK 72-32-60-350-088 Surface Treat the Repaired Area

    1. Refer to Figure.

      2. Do a chemical touch up to the repaired area except teflon coated surface by a brush.

    8. SUBTASK 72-32-60-350-089 Examine the LPC Bleed Duct Assembly

      1. Do a visual inspection.

      1. Visually examine the LPC bleed duct assembly for nicks, scratches and/or damaged.

        Use 10x magnifying glass.

        Refer to TASK 72-32-60-200-000 (INSPECTION/CHECK-000).

    9. SUBTASK 72-32-60-350-126 Identify the Repair

      1. Mark VRS1339 next to the part number.

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

        Use vibro-engraving equipment.

    10. SUBTASK 72-32-60-110-073 Clean the Marking Area

      1. Clean the marking area.

    11. SUBTASK 72-32-60-350-127 Surface Treat the Marking Area

      1. Do a chemical touch-up to the marking area with a brush.

    12. Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Sheet 2

    Legend
    Repair Details and Dimensions

    Sheet 2

    Close

    Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Sheet 2

    Legend
    Repair Details and Dimensions

    Sheet 2

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised step to restore teflon coating. (03VJ803D)

Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:23037
Enterprise Name:DUPONT
BU Name:DUPONT
Street:1007 MARKET ST
City:WILMINGTON
State:DE
Zip Code:19898
Country:USA
Phone Number:1-302-774-7321, 800-441-7715
Fax Number:1-302-774-1000
Email:info@dupont.com
Internet:www.dupont.com
Manufacturer Code:IE531
Enterprise Name:DELETED
BU Name:DELETED. WAS TREIBACHER SCHLEIFMITTEL NORTH AMERICA. REFER TO VENDOR CODE V531V.
Manufacturer Code:K0993
Enterprise Name:3M (UK) PLC
BU Name:3M (UK) PLC
Street:3M CENTRE, CAIN ROAD
City:BRACKNELL
Zip Code:RG12 8HT
Country:UNITED KINGDOM
Phone Number:44-161-236-8500
Fax Number:44-161-237-6136
Internet:www.mmm.co.uk
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:K6835
Supply Number:CoMat 02-006
Type:sp01
Supply Short Name:CoMat 02-006 ADHESIVE TAPE ALUMINIUM FOIL
Supply Name:CoMat 02-006 ADHESIVE TAPE ALUMINIUM FOIL
Specification Groups:
Doc NumberType
OMAT: 298 (RR REF)SCOTCH 425
Suppliers:
ManufacturerRemarks
K6835
52152
76381
LOCAL
Manufacturer Code:X111X
Supply Number:CoMat 02-051
Type:sp01
Supply Short Name:CoMat 02-051 HIGH TEMPERATURE GLASS CLOTH TAPE
Supply Name:CoMat 02-051 HIGH TEMPERATURE GLASS CLOTH TAPE
Suppliers:
ManufacturerRemarks
X111X
Manufacturer Code:X222X
Supply Number:CoMat 02-099
Type:sp01
Supply Short Name:CoMat 02-099 LINT-FREE CLOTH
Supply Name:CoMat 02-099 LINT-FREE CLOTH
Specification Groups:
Doc NumberType
WHERE COMAT 02-099 IS SPECIFIED WITH NO SUFFIX, USE COMAT 02-099A OR COMAT 02-099B.
Suppliers:
ManufacturerRemarks
X222X
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:1E1X8
Supply Number:CoMat 05-019
Type:sp01
Supply Short Name:CoMat 05-019 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-019 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/31 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 400 (ANSI B74.18)
JCR-184 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
LOCAL
K6835
Manufacturer Code:1E1X8
Supply Number:CoMat 05-020
Type:sp01
Supply Short Name:CoMat 05-020 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-020 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/33 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 320 (ANSI B74.18)
JCR-027 (JAEC REF)
JCR-186 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
LOCAL
K6835
Manufacturer Code:V531V
Supply Number:CoMat 05-192
Type:sp01
Supply Short Name:CoMat 05-192 ALUMINUM OXIDE GRIT
Supply Name:CoMat 05-192 ALUMINUM OXIDE GRIT
Specification Groups:
Doc NumberType
ALODUR LIONITE GF BROWN No. 60
Suppliers:
ManufacturerRemarks
V531V
Manufacturer Code:LOCAL
Supply Number:CoMat 07-028
Type:sp01
Supply Short Name:CoMat 07-028 CHROMATE CONVERSION COATING FOR ALUMINUM
Supply Name:CoMat 07-028 CHROMATE CONVERSION COATING FOR ALUMINUM
Specification Groups:
Doc NumberType
DELETED. USE COMAT 01-275
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:23037
Supply Number:CoMat 07-164
Type:sp01
Supply Short Name:CoMat 07-164 BONDING PREVENTIVE - FLUOROCARBONRESIN
Supply Name:CoMat 07-164 BONDING PREVENTIVE - FLUOROCARBONRESIN
Specification Groups:
Doc NumberType
JCR-332dupont 954G-304
Suppliers:
ManufacturerRemarks
23037
Manufacturer Code:LOCAL
Tool Number:Hand held pneumatic grinder
Tool Name:Hand held pneumatic grinder