TASK 72-50-24-300-006 LPT Inner Diffuser Duct Segment - Weld Repair The Location Slot, Repair-006 (VRS4112)

DMC:V2500-A0-72-50-2401-00A-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 72-50-24-300-006 LPT Inner Diffuser Duct Segment - Weld Repair The Location Slot, Repair-006 (VRS4112)

Effectivity

FIG/ITEM

PART NO.

01-010

3A0771

Material of component

PART IDENT

SYMBOL

MATERIAL

Inner duct segment A/O

MTS1189A

General

Price and availability - none

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

NOTE

For equipment and materials necessary to do this repair refer to the SPM TASK 70-23-05-230-501, SPM TASK 70-11-34-300-503, SPM TASK 70-31-13-310-501 and SPM TASK 70-37-00-370-501.
Equivalent equipment may be used.

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-283 COATING ALLOY0CZB2CoMat 03-283

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-24-110-134 Prepare the Surfaces Before Weld Repair

      1. Clean surfaces to be welded.

      1. Use silicon rag or equivalent.

    2. SUBTASK 72-50-24-230-093 Examine Surfaces to be Welded

      1. Do the test for cracks.

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

        No cracks are permitted.

    3. SUBTASK 72-50-24-110-135 Clean the Support Ring Assy

      1. Aqueous degrease.

      1. Refer to the SPM TASK 70-11-34-300-503.

    4. SUBTASK 72-50-24-310-062 Weld Repair the Worn Surfaces

      1. Build up surfaces. Use manual tungsten inert gas weld technique.

      1. Refer to Fig. 72-50-24-990-001and TASK 70-31-13-310-501.

        Deposit enough material to permit final machining.

    5. SUBTASK 72-50-24-370-058 Heat Treat After Weld Repair

      1. Heat treat the component.

      1. Refer to the SPM TASK 70-37-00-370-501.

        Put it in an oven for two hours at 1575 to 1625 deg F (857 to 885 deg C).

        Use argon or vacuum.

        Cooling rate equivalent to air cooling.

    6. SUBTASK 72-50-24-230-094 Examine the Welded Areas for Cracks

      1. Do the test for cracks.

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

        Fine surface cracks are permitted as follows:

        An unlimited number of linear/non linear discontinuities are permitted in the weld material and heat affected zone as long as they do not extend to an edge.

        Maximum length of linear discontinuities is 0.050in. (1.27 mm).

        Maximum of non-linear discontinuities is 0.020in. (0.50 mm).

      2. Clean the component.

      1. Refer to the SPM TASK 70-11-34-300-503.

    7. SUBTASK 72-50-24-320-055 Machine the Welded Areas

      1. Machine the welded area.

      1. Refer to Fig. 72-50-24-990-001.

      2. Dress all surplus weld to original contours.

      1. Welded areas must be blended in to adjacent surfaces.

        Surface finish must be the same as adjacent surface.

    8. SUBTASK 72-50-24-220-159 Examine Machined Area

      1. Dimensionally examine the component.

      1. Refer to Fig. 72-50-24-990-001.

    9. SUBTASK 72-50-24-230-095 Examine Machined Area for Cracks

      1. Do the test for cracks.

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

        Only cracks referred to in SUBTASK 72-50-24-230-002 are permitted.

    10. SUBTASK 72-50-24-110-139 Clean the Component

      1. Clean the duct segment.

      1. Refer to the SPM TASK 70-11-34-300-503.

    11. Figure: Dimensions for weld repair of the inner duct segment

    Dimensions for weld repair of the inner duct segment

    Figure: Dimensions for weld repair of the inner duct segment

    Dimensions for weld repair of the inner duct segment

    Figure: Dimensions for weld repair of the inner duct segment

    Dimensions for weld repair of the inner duct segment

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:0CZB2
Enterprise Name:DELETED. REFER TO VENDOR CODE 1YSY4.
Manufacturer Code:0CZB2
Supply Number:CoMat 03-283
Type:sp01
Supply Short Name:CoMat 03-283 COATING ALLOY
Supply Name:CoMat 03-283 COATING ALLOY
Specification Groups:
Doc NumberType
POWDER PWA 694
Suppliers:
ManufacturerRemarks
0CZB2