TASK 75-22-41-300-006 No. 4 Bearing Compartment Cooler (ACAC) Air Ducts - Weld Repair The Outlet Duct, Repair-006 (VRS1649)

DMC:V2500-A0-75-22-4101-00A-627A-C|Issue No:002.00|Issue Date:2016-02-01

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 75-22-41-300-006 No. 4 Bearing Compartment Cooler (ACAC) Air Ducts - Weld Repair The Outlet Duct, Repair-006 (VRS1649)

Effectivity

FIG/ITEM

PART NO.

01-400

5T0115

01-400

5T8128

Material of component

PART IDENT

SYMBOL

MATERIAL

ACAC outlet duct

Titanium alloy (Ti 6242)

General

This TASK gives the procedure for repair by welding of crack on the ACAC outlet duct.

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

Welders must be fully approved by the applicable regulatory authority.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Standard Workshop EquipmentLOCALStandard Workshop Equipment
Fluorescent Penetrant Inspection EquipmentLOCALFluorescent Penetrant Inspection Equipment
Portablegrinding equipmentLOCALPortable grinding equipment
TIG welding equipmentLOCALTIG welding equipment
Sealed welding chamberLOCALSealed welding chamber
Heat Treatment EquipmentLOCALHeat Treatment Equipment
Vibro-engraving equipmentLOCALVibro-engraving equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-031 ACETONE (CH3)2COLOCALCoMat 01-031
CoMat 01-124 ISOPROPYL ALCOHOLLOCALCoMat 01-124
CoMat 03-348 WELDING WIRELOCALCoMat 03-348
CoMat 05-020 WATERPROOF SILICON CARBIDELOCALCoMat 05-020
CoMat 05-021 WATERPROOF SILICON CARBIDE44197CoMat 05-021
CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)LOCALCoMat 06-063
CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)LOCALCoMat 06-064

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 75-22-41-230-057 Examine the ACAC Outlet Duct (01-400) for Damaged Area

    1. Refer to Figure.

      2. Do the crack test.

      1. Refer to Inspection-001 TASK 75-22-41-200-101.

      2. Write down the crack location and dimension.

      3. Repair cracks which begin only from the welded joints and are not more than 1.0 in. (25.4 mm) in length.

    2. SUBTASK 75-22-41-320-002 Remove the Crack

      1. Remove damaged area.

      1. Remove no more material than is necessary.

      2. Remove damage to depth.

    3. SUBTASK 75-22-41-230-058 Examine the ACAC Outlet Duct (01-400) for Damaged Area

    1. Refer to Figure.

    4. SUBTASK 75-22-41-350-059 Prepare the Damaged Area for Welding

    5. SUBTASK 75-22-41-310-002 The Procedure to Weld the Damaged Area

    1. Refer to Figure.

      2. CAUTION

        SURFACES FOR REPAIR MUST BE FULLY CLEANED AND DO NOT TOUCH BY HAND. CLEAN COTTON OR POLYTHENE GLOVES MUST BE WORN.

        Weld to repair the crack.

      1. Refer to SPM TASK 70-31-13-310-501.

    6. SUBTASK 75-22-41-230-059 Examine the Repaired Area

    7. SUBTASK 75-22-41-370-001 Heat Treat the ACAC Outlet Duct

      1. Heat treat the outlet duct, in a controlled argon gas chamber.

      1. Refer to SPM TASK 70-37-17-370-501.

      2. Heat Treat Data.

      1. Heat to a temperature of 1099 deg F (593 deg C) plus or minus 18 deg F (10 deg C) for 2 hours.

      2. Cool down to room temperature with fan cool in argon gas.

    8. SUBTASK 75-22-41-260-001 Examine the Outlet Duct

    1. Refer to Figure and Figure.

      2. Radio graphically examine the welded area.

      1. Cracks or unwanted material are not permitted.

      2. Pores larger than 0.006 in. (0.13 mm) diameter are not permitted. Pores with a distance of less than 0.200 in. (5.10 mm) between them, are not permitted.

      3. Surfaces broken by pores are not permitted.

      4. Use radiographic equipment.

        Table 3. X-Ray Data

        Source

        Beryllium window

        Source to film distance (SFD)

        27.56 in. (700.0 mm) minimum

        Kilovoltage

        86 KV

        Tube current

        5 mA

        Exposure time

        30 seconds

        Thickness and type of screens

        0.00012 in. (0.03 mm) Lead foi

        Type of film

        KODAK INDUSTREX M100 film (Refer to ASTM E 1815-96 Class I)

        Penetrameter

        Ti 0.010 in. (0.25 mm)

    9. SUBTASK 75-22-41-230-060 Examine the Outlet Duct

    10. SUBTASK 75-22-41-220-072 Examine the Outlet Duct

      1. Visually examine and measure the dimension of the bolt hole(s) in the ACAC outlet duct.

      1. Make sure the bolt hole(s) are to the dimensions given.

      2. Make sure there is no distortion of the outlet duct.

      3. Use workshop inspection equipment.

      2. If the bolt hole(s) are more than the given limits.

      1. Reject the outlet duct.

    11. SUBTASK 75-22-41-350-060 Identify the Repair

      1. Make a mark VRS1649 adjacent to the assembly number.

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

      3. Mark the number of times this repair has been completed on the duct.

      4. Vibro-engrave the number of times in a triangle adjacent to the part number.

    12. Figure: Air Cooled Air Cooler (ACAC) Outlet Duct

    Air Cooled Air Cooler (ACAC) Outlet Duct

    Figure: Detail Dimensions of the Repair Part

    Detail Dimensions of the Repair Part

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised temperature. (PSAF 15VC645)

Manufacturer Code:44197
Enterprise Name:SAINT-GOBAIN INDUSTRIAL CERAMICS INC.
BU Name:SAINT-GOBAIN ABRASIVES, INC
Street:ONE NEW BOND STREET
P.O. Box:PO BOX 15008
City:WORCESTER
State:MA
Zip Code:01615-0008
Country:USA
Phone Number:1-508-795-5000
Fax Number:1-508-795-2828
Internet:www.saint-gobain-northamerica.com
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 01-031
Type:sp01
Supply Short Name:CoMat 01-031 ACETONE (CH3)2CO
Supply Name:CoMat 01-031 ACETONE (CH3)2CO
Specification Groups:
Doc NumberType
OMAT: 150 (RR REF)COMMERCIAL GRADE O-A-51
PMC 9008 (PW REF)COMMERCIAL GRADE O-A-51
JCR-041 (JAEC REF)COMMERCIAL GRADE O-A-51
MTH 169 (98%) (MTU REF)COMMERCIAL GRADE O-A-51
Suppliers:
ManufacturerRemarks
LOCAL
K6835
81348
K3504
U1185
24853
70657
Manufacturer Code:LOCAL
Supply Number:CoMat 01-124
Type:sp01
Supply Short Name:CoMat 01-124 ISOPROPYL ALCOHOL
Supply Name:CoMat 01-124 ISOPROPYL ALCOHOL
Specification Groups:
Doc NumberType
OMAT:1/40GPR TECHNICAL GRADE
PMC 9094GPR TECHNICAL GRADE
JCR-011GPR TECHNICAL GRADE
Suppliers:
ManufacturerRemarks
LOCAL
U1185
24853
K6835
Manufacturer Code:LOCAL
Supply Number:CoMat 03-348
Type:sp01
Supply Short Name:CoMat 03-348 WELDING WIRE
Supply Name:CoMat 03-348 WELDING WIRE
Specification Groups:
Doc NumberType
AMS 49526-2-4-2
Suppliers:
ManufacturerRemarks
LOCAL
2R602
3G172
58401
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:1E1X8
Supply Number:CoMat 05-021
Type:sp01
Supply Short Name:CoMat 05-021 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-021 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/35 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 240 (ANSI B74.18 )
JCR-188 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
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:X222X
Supply Number:CoMat 06-064
Type:sp01
Supply Short Name:CoMat 06-064FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Supply Name:CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐064 letter suffix material with other CoMat 06‐064 letter suffix materials.Where CoMat 06‐064 is specified with no suffix, use one of the CoMat 06‐064 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Link not Found
Manufacturer Code:LOCAL
Tool Number:Heat Treatment Equipment
Tool Name:Heat Treatment Equipment
Manufacturer Code:LOCAL
Tool Number:Portable grinding equipment
Tool Name:Portablegrinding equipment
Manufacturer Code:LOCAL
Tool Number:Sealed welding chamber
Tool Name:Sealed welding chamber
Manufacturer Code:LOCAL
Tool Number:Standard Workshop Equipment
Tool Name:Standard Workshop Equipment
Manufacturer Code:LOCAL
Tool Number:TIG welding equipment
Tool Name:TIG welding equipment
Manufacturer Code:LOCAL
Tool Number:Vibro-engraving equipment
Tool Name:Vibro-engraving equipment