TASK 72-50-25-300-018 LPT Outer Diffuser Segment - Replace The Pin, Repair-018 (VRS4308)

DMC:V2500-A0-72-50-2501-02A-920A-C|Issue No:003.00|Issue Date:2020-02-01

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 72-50-25-300-018 LPT Outer Diffuser Segment - Replace The Pin, Repair-018 (VRS4308)

Effectivity

FIG/ITEM

PART NO.

01-200

3A1791

Material of component

PART IDENT

IAE SYMBOL

MATERIAL

Outer diffuser segment assembly

Inconel 939

General

Price and availability - none

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

Make sure that the necessary cleaning and inspection procedures are done before this repair.

NOTE

For more equipment and materials necessary to do this repair, refer to the SPM TASK 70-11-03-300-503, SPM TASK 70-23-05-230-501, SPM TASK 70-31-09-310-501, SPM TASK 70-35-23-320-501 and SPM TASK 70-33-06-300-503.
Equivalent equipment may be used.

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Electro discharge machineLOCALElectro discharge machine
DELETED0AM53DELETED

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-162 HIGH TEMP. BRAZING FILLERPOWDERLOCALCoMat 03-162
CoMat 03-163 HIGH TEMP. BRAZING FILLERPOWDERLOCALCoMat 03-163
CoMat 03-164 HIGH TEMP. BRAZING FILLERPOWDERLOCALCoMat 03-164
CoMat 03-165 BRAZING FILLER POWDERLOCALCoMat 03-165
CoMat 03-227 WHITE STOP OFFD3309CoMat 03-227

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
Pin3A00922

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-25-326-003 Remove the Worn Pin

    1. Refer to Figure.

      2. Machine off the worn 3A0092 .

      1. Electro discharge metal removal according to the SPM TASK 70-35-23-320-501 is permitted.

        Do not remove parent material.

        To get the hole dimensions traces of braze may stay.

    2. SUBTASK 72-50-25-110-080 Clean the Outer Diffuser Segment Assembly

      1. Aqueous cleaning

      1. Refer to the SPM TASK 70-11-03-300-503.

    3. SUBTASK 72-50-25-230-081 Examine the Outer Diffuser Segment Assembly for Cracks

      1. Do the test for cracks.

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

        Use medium sensitivity level.

        No cracks are permitted.

    4. SUBTASK 72-50-25-220-132 Examine the Outer Diffuser Segment Assembly

    1. Refer to Figure.

    2. Examine dimensionally.

    5. SUBTASK 72-50-25-330-002 Nickel Plate the Areas

      1. Nickel plate surfaces if necessary.

      1. Refer to the SPM TASK 70-33-06-300-503.

        Coating thickness to be between 0.0001 to 0.0003 in. (0.003 to 0.008 mm).

    6. SUBTASK 72-50-25-310-059 Braze in the New Pin

    1. Refer to Figure.

      2. Braze the 3A0092 in position.

      1. Refer to the SPM TASK 70-31-09-310-501.

        Increase temperature of 2095 to 2145 deg F (1146 to 1174 deg C) and hold for 9 to 11 minutes.

        Cool at a minimum rate of 36 deg F (20 deg C) per minute to below 1112 deg F (600 deg C).

        Further cooling rate is optional.

        When only one 3A0092 is brazed, other 3A0092 must be completely stopped off.

    7. SUBTASK 72-50-25-370-001 Precipitation Heat Treat of the Outer Diffuser Segment

      1. Precipitation heat treat the outer diffuser segment

      1. Heat treat in vacuum or protective atmosphere at 1807 to 1857 deg F (986 to 1014 deg C) for six hours.

        Cool at a minimum rate of 36 deg F (20 deg C) per minute to below 1112 deg F (600 deg C).

        Reheat to 1447 to 1497 deg F (786 to 814 deg C) for four hours.

        Cool at a minimum rate of 36 deg F (20 deg C) per minute to below 1112 deg F (600 deg C).

        Further cooling rate is optional.

    8. SUBTASK 72-50-25-110-081 Clean the Outer Diffuser Segment Assembly

      1. Aqueous cleaning

      1. Refer to the SPM TASK 70-11-03-300-503.

        Make sure that CoMat 03-227 WHITE STOP OFF is completely removed.

    9. SUBTASK 72-50-25-220-133 Do the Post Repair Inspection

    1. Refer to Figure.

      2. Examine the repaired areas visually.

      1. Refer to the SPM TASK 70-31-09-310-501.

    3. Examine dimensionally.

  10. Deleted

    11. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added General para. Revised SPM. Deleted tool. Revised procedural step. Added procedural step. Deleted procedural step. Revised graphic. (EC99VM516/B)

Change Type:

Revised Consumables nomenclature. (Editorial)

Link not Found
Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
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 03-162
Type:sp01
Supply Short Name:CoMat 03-162 HIGH TEMP. BRAZING FILLER POWDER
Supply Name:CoMat 03-162 HIGH TEMP. BRAZING FILLERPOWDER
Specification Groups:
Doc NumberType
MSRR9500/116NICROBRAZ 30 (-150 MESH) AMS.4782 B.S.1845 HTN5
OMAT:3/117ANICROBRAZ 30 (-150 MESH) AMS.4782 B.S.1845 HTN5
JCR-228NICROBRAZ 30 (-150 MESH) AMS.4782 B.S.1845 HTN5
Suppliers:
ManufacturerRemarks
LOCAL
IE441
U0163
63585
K6835
Manufacturer Code:LOCAL
Supply Number:CoMat 03-163
Type:sp01
Supply Short Name:CoMat 03-163 HIGH TEMP. BRAZING FILLER POWDER
Supply Name:CoMat 03-163 HIGH TEMP. BRAZING FILLERPOWDER
Specification Groups:
Doc NumberType
MSRR9500/116ENDEWRANCE CM 60-150 MESH) AMS 4782 B.S.1845 HTN5
OMAT:3/117ENDEWRANCE CM 60-150 MESH) AMS 4782 B.S.1845 HTN5
JCR-229ENDEWRANCE CM 60-150 MESH) AMS 4782 B.S.1845 HTN5
Suppliers:
ManufacturerRemarks
LOCAL
72271
IE441
K6835
Manufacturer Code:LOCAL
Supply Number:CoMat 03-164
Type:sp01
Supply Short Name:CoMat 03-164 HIGH TEMP. BRAZING FILLER POWDER
Supply Name:CoMat 03-164 HIGH TEMP. BRAZING FILLERPOWDER
Specification Groups:
Doc NumberType
MSRR9500/116AMDRY 100 (-150 MESH) BN1-5 AMS 4782 B.S.1845 HTN5 (FORMERLY NK8)
OMAT:3/117BAMDRY 100 (-150 MESH) BN1-5 AMS 4782 B.S.1845 HTN5 (FORMERLY NK8)
JCR-230AMDRY 100 (-150 MESH) BN1-5 AMS 4782 B.S.1845 HTN5 (FORMERLY NK8)
Suppliers:
ManufacturerRemarks
LOCAL
53654
K1030
K6835
Manufacturer Code:LOCAL
Supply Number:CoMat 03-165
Type:sp01
Supply Short Name:CoMat 03-165 BRAZING FILLER POWDER
Supply Name:CoMat 03-165 BRAZING FILLER POWDER
Specification Groups:
Doc NumberType
MSRR 9500/116CRONISI (-150 MESH) AMS4782 B.S.1845 HTN5
OMAT:3/117CCRONISI (-150 MESH) AMS4782 B.S.1845 HTN5
JCR-231CRONISI (-150 MESH) AMS4782 B.S.1845 HTN5
Suppliers:
ManufacturerRemarks
LOCAL
IE306
64172
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
Manufacturer Code:0AM53
Tool Number:DELETED
Tool Name:DELETED
Manufacturer Code:LOCAL
Tool Number:Electro discharge machine
Tool Name:Electro discharge machine