TASK 72-42-35-300-001 No. 4 Bearing Front Cooling Duct - Weld Repair, Repair-001 (VRS3300)

DMC:V2500-A0-72-42-3500-00A-627A-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 72-42-35-300-001 No. 4 Bearing Front Cooling Duct - Weld Repair, Repair-001 (VRS3300)

Effectivity

FIG/ITEM PART NO.

01-010

2A0892-01

01-010

2A0892-001

01-010

2A2257-01

01-010

2A3810-01

Material of component

IAE

DESCRIPTION SYMBOL MATERIAL

No. 4 bearing front cooling duct

-

Nickel alloy

General

Price and availability - refer to IAE

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

NOTE

To identify the consumable materials, refer to the PCI.

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 72-42-35-110-054 Clean the No. 4 Bearing Front Cooling Duct

      1. Clean the cooling duct.

      1. Refer to TASK 72-42-35-100-000 (CLEANING-000).

    2. SUBTASK 72-42-35-350-053 Remove the Cracks from the No. 4 Bearing Front Cooling Duct

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

      1. You do not have to rout out cracks in the sheet metal. There is no maximum quantity or length for cracks.

    3. SUBTASK 72-42-35-110-055 Clean the Repair Area of the No. 4 Bearing Front Cooling Duct

      1. Clean the area to be welded.

      1. Use a silicon carbide wheel.

    4. SUBTASK 72-42-35-310-051 Weld the No. 4 Bearing Front Cooling Duct

      1. Weld the cracks in the cooling duct.

      1. Refer to Figure.

        Manual gas tungsten arc weld the cooling duct. Use CoMat 03-284 WELDING FILLER WIRE, NiBASE.

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

    5. SUBTASK 72-42-35-230-052 Examine the No. 4 Bearing Front 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 72-42-35-370-051 Stress Relieve the No. 4 Bearing Front Cooling Duct

      1. Stress-relieve the cooling duct.

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

    7. SUBTASK 72-42-35-230-053 Examine the No. 4 Bearing Front Cooling Duct

      1. Fluorescent penetrant inspect the cooling duct.

      1. Refer to the SPM TASK 70-23-01-230-501 or SPM TASK 70-23-02-230-501. No cracks are permitted.

    8. SUBTASK 72-42-35-220-063 Do a Hardness Check on the No. 4 Bearing Front 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.

    9. SUBTASK 72-42-35-350-054 Blend the No. 4 Bearing Front Cooling Duct after Weld Repair

    1. Refer to Figure.

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

      1. Refer to the SPM TASK 70-35-21-350-501.

    10. SUBTASK 72-42-35-220-057 Examine the Repair

    1. Refer to Figure and Figure.

    2. Examine the cooling duct after repair.

    11. 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
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