TASK 72-50-24-300-002 LPT Inner Diffuser Duct Segment - Replace The Air Seal, Repair-002 (VRS4065)

DMC:V2500-A0-72-50-2401-00A-920A-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 72-50-24-300-002 LPT Inner Diffuser Duct Segment - Replace The Air Seal, Repair-002 (VRS4065)

Effectivity

FIG/ITEM PART NO.

01-010

3A0771

Material of component

PART IDENT

SYMBOL

MATERIAL

Inner Duct Segment Assy

Inconel 713

Air Seal

Hastelloy X

General

Price and availability - none

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

NOTE

For more equipment and materials necessary to do this repair, refer to the SPM TASK 70-11-34-300-503, SPM TASK 70-21-01-220-501, SPM TASK 70-31-07-310-501 and SPM TASK 70-32-03-320-501.
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 03-148 BRAZING FILLER POWDERLOCALCoMat 03-148
CoMat 03-151 HIGH TEMP. BRAZING FILLERPOWDERLOCALCoMat 03-151
CoMat 03-227 WHITE STOP OFFD3309CoMat 03-227

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
Air seal3A24291

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-24-325-057 Remove the Worn Air Seal

      1. Machine off the worn air seal.

      1. Electrical discharge machine according to the SPM TASK 70-32-03-320-501 is permitted.

        Refer to Figure.

        Do not remove parent material.

        Traces of braze can stay to get required dimension.

    2. SUBTASK 72-50-24-110-076 Clean the Inner Duct Segment

      1. Aqueous degrease.

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

    3. SUBTASK 72-50-24-310-056 Braze in the New Air Seal

      1. Vacuum-braze the air seal in position.

      1. Refer to Figure.

        Braze run-off in location X is permitted.

        For braze cycles refer to TASK 70-31-07-310-501.

    4. SUBTASK 72-50-24-110-077 Clean the Inner Duct Segment

      1. Aqueous degrease.

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

    5. SUBTASK 72-50-24-350-063 Machine the Inner Duct after Brazing

      1. Machine inner duct.

      1. Refer to Figure for finishing dimension.

    6. SUBTASK 72-50-24-220-109 Examine the Brazed Air Seal

      1. Examine brazed area.

      1. Braze must be complete and show no sign of distress caused by machining.

      2. Dimensionally examine.

      1. Refer to the finished dimensions in Figure.

    7. SUBTASK 72-50-24-230-066 Examine the Brazed Air Seal for Cracks

      1. Visually examine for cracks.

      1. Refer to the SPM TASK 70-21-01-220-501.

        No cracks are permitted.

    8. SUBTASK 72-50-24-220-110 Examine the Honeycomb Braze Condition

      1. Visually examine the honeycomb for completed braze.

      1. Refer to the SPM TASK 70-31-07-310-501 for acceptance standards.

    9. Figure: Dimensions for machining the air seal of the inner duct

    Dimensions for machining the air seal of the inner duct

    Figure: Brazing and examination limits for the new air seal of the inner duct

    Sheet 1

    Legend
    Brazing and examination limits for the new air seal of the inner duct

    Sheet 1

    Close

    Figure: Brazing and examination limits for the new air seal of the inner duct

    Sheet 2

    Legend
    Brazing and examination limits for the new air seal of the inner duct

    Sheet 2

    Close

    Figure: Brazing and examination limits for the new air seal of the inner duct

    Brazing and examination limits for the new air seal of the inner duct

    Figure: Repair Part new air seal of the inner duct

    Repair Part new air seal of the inner duct

Requirements After Job Completion

Follow-On Conditions

NONE
Link not Found
Manufacturer Code:D3309
Enterprise Name:MTU MOTOREN-UND-TURBINE UNION MUNCHEN GMBH
BU Name:MTU MOTOREN-UND-TURBINE UNION MUNCHEN GMBH
Street:DACHAUERSTRASSE 665
P.O. Box:80995
City:MUNCHEN 50
Country:GERMANY
Phone Number:49-89-14890
Fax Number:49-89-1502621
Internet:www.mtu.de
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Link not Found
Manufacturer Code:LOCAL
Supply Number:CoMat 03-148
Type:sp01
Supply Short Name:CoMat 03-148 BRAZING FILLER POWDER
Supply Name:CoMat 03-148 BRAZING FILLER POWDER
Specification Groups:
Doc NumberType
MSRR 9500/97NICROBRAZ LM NICROBRAZ LM (-150 MESH) AMS 4777 B.S.1845 HTN2
OMAT:3/181NICROBRAZ LM NICROBRAZ LM (-150 MESH) AMS 4777 B.S.1845 HTN2
JCR-214NICROBRAZ LM NICROBRAZ LM (-150 MESH) AMS 4777 B.S.1845 HTN2
Suppliers:
ManufacturerRemarks
LOCAL
63585
K6835
U0163
K5086
Manufacturer Code:LOCAL
Supply Number:CoMat 03-151
Type:sp01
Supply Short Name:CoMat 03-151 HIGH TEMP. BRAZING FILLER POWDER
Supply Name:CoMat 03-151 HIGH TEMP. BRAZING FILLERPOWDER
Specification Groups:
Doc NumberType
OMAT: 3/118NICROBRAZ 130 MSRR9500/114
Suppliers:
ManufacturerRemarks
LOCAL
K6835
63585
IE441
U0163
Manufacturer Code:D3309
Supply Number:CoMat 03-227
Type:sp01
Supply Short Name:CoMat 03-227 WHITE STOP OFF
Supply Name:CoMat 03-227 WHITE STOP OFF
Specification Groups:
Doc NumberType
MTH 316NICROBRAZE WHITE STOP OFF
Suppliers:
ManufacturerRemarks
D3309