TASK 30-21-49-300-004 Anti-Ice Ducts - Repair Damage With A Weld Patch, Repair-004 (VRS7536)

DMC:V2500-A0-30-21-4901-00A-627A-C|Issue No:002.00|Issue Date:2014-08-01

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 30-21-49-300-004 Anti-Ice Ducts - Repair Damage With A Weld Patch, Repair-004 (VRS7536)

Effectivity

FIG/ITEM

PART NO.

01-070

745-5151-501

01-070

745-5151-503

02-100

740-5152-507

02-100

745-5152-501

01-100

745-5152-503

02-500

740-5153-507

02-500

745-5153-501

02-500

745-5153-503

01-010

740-5172-505

01-010

745-5172-501

01-050

740-5173-507

01-070

740-5183-501

01-070

740-5183-503

Material of component

DESCRIPTION

RR SYMBOL

MATERIAL

Thermal Anti-Icing duct

Stainless steel

General

This repair can be done on the T.A.I duct during overhaul.

The practices and processes referred to in the procedure by the TASK numbers are in the CMM-THD or SPM.

NOTE

To identify the consumable materials refer to the (PCI).

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Argon-arc welding equipmentLOCALArgon-arc welding equipment
Wire brushLOCALWire brush

stainless steel

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-076 METHYL ETHYL KETONELOCALCoMat 01-076
CoMat 02-099 LINT-FREE CLOTHLOCALCoMat 02-099
CoMat 03-204 WELDING FILLER WIRELOCALCoMat 03-204

Material MIL-T-8808B Type 347 0.036 in. (0.91 mm)

Material MIL-T-8808B Type 347 0.040 in. (1.01 mm)

Material MIL-T-8808B Type 347 0.050 in. (1.27 mm)

Material MIL-T-8808B Type 347 0.063 in. (1.60 mm)

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 30-21-49-110-005 Clean the T.A.I Duct

      WARNING

      KEEP FLAMES AND ELECTRICAL EQUIPMENT WHICH IS NOT FLAMEPROOF AWAY FROM THE WORK AREA. THE CLEANING FLUID IS FLAMMABLE.

      WARNING

      DO NOT GET CLEANING FLUID ON YOUR SKIN OR IN YOUR EYES. PUT ON PROTECTIVE CLOTHING, GOGGLES AND A MASK. USE THE FLUID IN A WELL VENTILATED AREA. DO NOT BREATHE THE GAS. IF YOU GET THE FLUID ON YOUR SKIN OR IN YOUR EYES, FLUSH IT AWAY WITH WATER. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.

      1. Clean the T.A.I duct.

      1. Refer to Cleaning-001 TASK 30-21-49-100-101 or to Cleaning-002 TASK 30-21-49-100-102.

    2. SUBTASK 30-21-49-350-001 Prepare the Damaged Area

    1. Refer to Figure.

      2. Identify the area to be removed.

      1. Make sure that the mark is symmetrical in shape and larger all around than the damaged area.

      3. Remove the damaged area.

      1. Use the standard workshop tools and cut along the mark around the damaged area. Remove the damaged area.

      4. Remove all sharp edged from the cut-out in T.A.I duct.

      1. Use the standard workshop tools.

    3. SUBTASK 30-21-49-350-002 Make a Repair Patch

      1. Identify the area to be removed.

      1. Use the standard workshop tools and either a section of used T.A.I duct or the applicable repair material.

      2. Make the repair patch to the same dimensions and thickness as the cutout in the T.A.I duct.

      3. Roll the material until the contour of the repair and the T.A.I duct are the same.

      2. Remove all the sharp edges from the repair patch.

      1. Use the standard workshop tools.

    4. SUBTASK 30-21-49-110-006 Clean the T.A.I Duct

      WARNING

      KEEP FLAMES AND ELECTRICAL EQUIPMENT WHICH IS NOT FLAMEPROOF AWAY FROM THE WORK AREA. THE CLEANING FLUID IS FLAMMABLE.

      WARNING

      DO NOT GET CLEANING FLUID ON YOUR SKIN OR IN YOUR EYES. PUT ON PROTECTIVE CLOTHING, GOGGLES AND A MASK. USE THE FLUID IN A WELL VENTILATED AREA. DO NOT BREATHE THE GAS. IF YOU GET THE FLUID ON YOUR SKIN OR IN YOUR EYES, FLUSH IT AWAY WITH WATER. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.

      1. Clean the T.A.I duct.

      1. Refer to Cleaning-001 TASK 30-21-49-100-101 or to Cleaning-002 TASK 30-21-49-100-102.

    5. SUBTASK 30-21-49-310-001 Install the Repair Patch

      1. Put the repair patch into the correct position for installation.

      1. If necessary, tack weld the repair patch into position.

      2. Weld the repair patch.

      2. The welding data is as follows:

        Type - Argon-arc D.C. Torch - B.O.C. W200 or equivalent

        Electrode - 2% ceriated tungsten with a 0.0625 in. (1.588 mm) diameter

    3. NOTE

      The argon backing flow, the argon torch flow and the current flow must be determined by experiment on suitable test pieces.

      Let the repair cool.

    6. SUBTASK 30-21-49-120-001 Clean the Repaired Area

      1. Clean the repaired area.

      1. Use the Wire brush remove the unwanted materials caused by the repair.

    7. SUBTASK 30-21-49-220-001 Examine the Repair

      1. Visually examine the repaired area of the T.A.I duct.

      2. Make sure that the repair is satisfactory.

    8. SUBTASK 30-21-49-230-001 Examine the Repair

      1. Do the dye-penetrant test of the repair.

    9. SUBTASK 30-21-49-260-001 Examine the Repair

      1. Do the x-ray inspection of the repair.

    10. SUBTASK 30-21-49-780-001 Pressure test the T.A.I Duct

      1. Do a pressure test of the T.A.I duct.

      1. Refer to Testing-001 TASK 30-21-49-700-101 or to Testing-002 TASK 30-21-49-700-102.

    11. SUBTASK 30-21-49-850-001 Put the Repair Scheme Number on the T.A.I Duct

      1. Put the repair scheme number VRS7536 on the T.A.I duct adjacent to the part number using electro-etch method.

      1. Refer to SPM TASK 70-09-00-400-501.

    12. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Changed thoirated tungsten to ceriated tungsten. (12VN804)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 01-076
Type:sp01
Supply Short Name:CoMat 01-076 METHYL ETHYL KETONE
Supply Name:CoMat 01-076 METHYL ETHYL KETONE
Specification Groups:
Doc NumberType
METHYL ETHYL KETONE, TECHNICAL GRADE, CERTIFIED TO BSI BS 1940 OR ASTM D740, OR TT-M-261
Suppliers:
ManufacturerRemarks
LOCAL
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:LOCAL
Supply Number:CoMat 03-204
Type:sp01
Supply Short Name:CoMat 03-204 WELDING FILLER WIRE
Supply Name:CoMat 03-204 WELDING FILLER WIRE
Specification Groups:
Doc NumberType
OMAT:306MSRR9500/2 B.S.2901:1970 347 S96/FORM. BSS2901 A8Nb
Suppliers:
ManufacturerRemarks
LOCAL
22994
IE306
Manufacturer Code:LOCAL
Tool Number:Argon-arc welding equipment
Tool Name:Argon-arc welding equipment
Manufacturer Code:LOCAL
Tool Number:Wire brush
Tool Name:Wire brush