TASK 72-43-30-300-001 No. 4 Bearing Rear Cooling Duct - Weld Repair, Repair-001 (VRS3305)

DMC:V2500-A0-72-43-3001-00A-627A-C|Issue No:003.00|Issue Date:2015-05-01

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 72-43-30-300-001 No. 4 Bearing Rear Cooling Duct - Weld Repair, Repair-001 (VRS3305)

Effectivity

FIG/ITEM

PART NO.

01-010

2A0891-01

01-010

2A0891-001

01-010

2A1205-01

01-010

2A1205-001

01-010

2A3078-01

01-010

2A3808-01

Material of component

DESCRIPTION

SYMBOL

MATERIAL

No. 4 bearing rear cooling duct

-

Nickel alloy

General

Price and availability - Refer to IAE.

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Silicon carbide wheelLOCALSilicon carbide wheel
Stress-relief equipmentLOCALStress-relief equipment
Welding equipmentLOCALWelding equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-284 WELDING FILLER WIRE, NiBASELOCALCoMat 03-284

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-43-30-110-057 Clean the No. 4 Bearing Rear Cooling Duct

      1. Clean the cooling duct.

      1. Refer to TASK 72-43-30-100-000 (CLEANING-000).

    2. SUBTASK 72-43-30-350-051 Remove the Cracks from the No. 4 Bearing Rear Cooling Duct

      1. Route out cracks to remove the entire crack. There is no maximum quantity or length.

      1. Cracks in the sheet metal do not have to be routed. There is no maximum quantity or length for cracks.

    3. SUBTASK 72-43-30-110-058 Clean the Repair Area of the No. 4 Bearing Rear Cooling Duct

      1. Clean the area to be welded.

      1. Use a silicon-carbide wheel.

    4. SUBTASK 72-43-30-310-051 Weld the No. 4 Bearing Rear Cooling Duct

      1. Weld the cracks in the cooling duct.

      1. Refer to Figure.

        Manual gas tungsten arc weld the cooling duct.

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

    5. SUBTASK 72-43-30-230-053 Examine the No. 4 Bearing Rear Cooling Duct after Weld Repair

      1. Fluorescent penetrant inspect the cooling duct.

      1. Refer to the SPM TASK 70-23-05-230-501.

        No cracks are permitted.

    6. SUBTASK 72-43-30-370-051 Stress-Relieve the No. 4 Bearing Rear Cooling Duct

      1. Stress-relieve the cooling duct.

      1. Refer to the SPM TASK 70-37-01-370-501.

    7. SUBTASK 72-43-30-220-057 Examine the No. 4 Bearing Rear Cooling Duct

      1. Examine the diameters of the cooling duct.

      1. Refer to Figure.

    8. SUBTASK 72-43-30-350-052 Blend the No. 4 Bearing Rear Cooling Duct After Weld Repair

    1. Blend the weld repaired areas to the contour of adjacent areas.

    9. SUBTASK 72-43-30-230-054 Examine the No. 4 Bearing Rear Cooling Duct

      1. Fluorescent penetrant inspect the cooling duct.

      1. Refer to the SPM TASK 70-23-05-230-501 No cracks are permitted.

    10. SUBTASK 72-43-30-220-069 Do a Hardness Checn on the No. 4 Bearing Rear Cooling Duct

      1. Do a hardness check on the parent material adjacent to the welded area.

      1. The hardness must be Rockwell C36 minimum or equivalent.

    11. SUBTASK 72-43-30-220-070 Examine the Cooling Duct

    1. Refer to Figure.

    2. Examine the cooling duct after repair.

    12. 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:

Revised format. (editorial change)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 03-284
Type:sp01
Supply Short Name:CoMat 03-284 WELDING FILLER WIRE, Ni BASE
Supply Name:CoMat 03-284 WELDING FILLER WIRE, NiBASE
Specification Groups:
Doc NumberType
INCONEL 718 AMS 5832 AWS 5.14 MSRR9500/220
INCONEL 718 AMS 5832 AWS 5.14CLASS ER NI FE Cr-2 OMAT:3/206
INCONEL 718 AMS 5832 AWS 5.14CLASS ER NI FE Cr-2
Suppliers:
ManufacturerRemarks
LOCAL
28553
IE137
08489
IE508
0ZDB5
2R602
55596
58401
80357
K6835
Manufacturer Code:LOCAL
Tool Number:Silicon carbide wheel
Tool Name:Silicon carbide wheel
Manufacturer Code:LOCAL
Tool Number:Stress-relief equipment
Tool Name:Stress-relief equipment
Manufacturer Code:LOCAL
Tool Number:Welding equipment
Tool Name:Welding equipment