TASK 72-43-30-300-007 No. 4 Bearing Heatshield - Weld Repair Cracks And Patch Repair, Repair-007 (VRS3123)

DMC:V2500-A0-72-43-3002-00A-627A-C|Issue No:002.00|Issue Date:2014-11-01

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 72-43-30-300-007 No. 4 Bearing Heatshield - Weld Repair Cracks And Patch Repair, Repair-007 (VRS3123)

Effectivity

FIG/ITEM PART NO.

01-080

2A0890-01

01-080

2A1204-01

Material of component

RR

DESCRIPTION SYMBOL MATERIAL

No. 4 Bearing Heat Shield

-

Nickel alloy

General

Price and availability - refer to IAE

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

NOTE

To identify the consumable materials refer to 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
CoMat 03-335 HASTELLOY X SHEET STOCKLOCALCoMat 03-335

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-43-30-110-059 Clean the No. 4 Bearing Heat Shield

      1. Clean the heat shield.

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

    2. SUBTASK 72-43-30-350-053 Remove Cracks from the No. 4 Bearing Heat Shield

      1. Rout out cracks to remove the cracks fully from the weld. There is no maximum length or quantity for cracks in welds.

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

    3. SUBTASK 72-43-30-110-060 Clean the Repair Area of the No. 4 Bearing Heat Shield after Routing Cracks

      1. Clean the area to be welded.

      1. Use a silicon-carbide wheel or equivalent.

    4. SUBTASK 72-43-30-310-052 Weld the No. 4 Bearing Heat Shield

      1. Weld the cracks in the heat shield.

      1. Refer to Figure. Manual gas tungsten arc weld the heat shield. Use CoMat 03-284 WELDING FILLER WIRE, NiBASE. Refer to the SPM TASK 70-31-13-310-501.

    5. SUBTASK 72-43-30-370-052 Stress-Relieve the No. 4 Bearing Heat Shield

      1. Stress-relieve the heat shield.

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

    6. SUBTASK 72-43-30-350-054 Blend the No. 4 Bearing Heat Shield after Weld Repair

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

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

    7. SUBTASK 72-43-30-230-056 Examine the No. 4 Bearing Heat Shield

      1. Fluorescent penetrant inspect the heat shield.

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

    8. SUBTASK 72-43-30-350-055 Remove Rough Edges or Distorted Areas Around Holes in the No. 4 Bearing Heat Shield

      1. Machine to remove damage in the heat shield.

      1. Refer to Figure. The area you machine can be any shape. The area must be in a 2.000in. (50.8 mm) diameter circle. The inside and outside corner radii must be a minimum of 0.250in. (6.35 mm).

      2. Machine to remove oxides in 0.300in. (7.71 mm) of the holes you machined.

      1. Use a silicon-carbide abrasive wheel or equivalent.

    9. SUBTASK 72-43-30-310-053 Weld Patches on Holes in the No. 4 Bearing Heat Shield

      1. Make a patch so the fit in the hole you machined will be 0.000 to 0.005in. (0.000 to 0.013 mm) loose.

      1. Refer to Figure. Use can cut patches from discarded heat shields with the same part number, or you can use CoMat 03-335 HASTELLOY X SHEET STOCK.

        NOTE

        Patches made from CoMat 03-335 HASTELLOY X SHEET STOCK must be heat treated to HRC 36 minimum or equivalent before you weld them.

      2. Weld the patch.

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

    10. SUBTASK 72-43-30-350-056 Blend the No. 4 Bearing Heat Shield after Weld Repair

      1. Blend the repaired area.

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

    11. SUBTASK 72-43-30-370-053 Stress-Relieve the No. 4 Bearing Heat Shield

      1. Stress-relieve the heat shield.

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

    12. SUBTASK 72-43-30-230-057 Examine the No. 4 Bearing Heat Shield

      1. Fluorescent penetrant inspect the heat shield.

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

    13. SUBTASK 72-43-30-220-061 Examine the Repair

      1. Examine the heat shield after repair.

      1. Refer to TASK 72-43-30-200-000 (INSPECTION-000).

    14. Figure: No. 4 bearing heat shield crack and patch weld repair

    No. 4 bearing heat shield crack and patch weld repair

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Corrected the SPM reference. (EA13VC080)

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
Supply Number:CoMat 03-335
Type:sp01
Supply Short Name:CoMat 03-335 HASTELLOY X SHEET STOCK
Supply Name:CoMat 03-335 HASTELLOY X SHEET STOCK
Specification Groups:
Doc NumberType
AMS 5536AMS 5536
Suppliers:
ManufacturerRemarks
LOCAL
8M212
0FGC3
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