TASK 72-50-22-300-076 LPT Stage 4 Vane - Replace The Locating Key, Repair-076 (VRS4371)

DMC:V2500-A0-72-50-2204-04A-920A-C|Issue No:005.00|Issue Date:2016-05-01

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 72-50-22-300-076 LPT Stage 4 Vane - Replace The Locating Key, Repair-076 (VRS4371)

Effectivity

FIG/ITEM

PART NO.

01-550

3A2417

01-550

3A2898

01-550

3A3105

01-550

3A3119

Material of component

IAE

PART IDENT

SYMBOL

MATERIAL

Stage 4 Turbine Vane

MTS1323B/M-247 LC DS

Locating Key

Hastelloy X

General

Price and availability - none

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

NOTE

For more equipment and materials necessary to do this repair, refer to SPM TASK 70-11-03-300-503, SPM TASK 70-23-04-230-501, SPM TASK 70-23-05-230-501, SPM TASK 70-23-08-230-501, SPM TASK 70-31-07-310-501, SPM TASK 70-31-09-310-501, SPM TASK 70-32-03-320-501, SPM TASK 70-33-06-300-503 and SPM TASK 70-37-27-370-501.
Equivalent equipment may be used.

NOTE

To identify the consumable materials, refer to the PCI.

NOTE

Special tools are identified in the procedure by the tool primary number.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Standard equipmentLOCALStandard equipment
Dial caliperLOCALDial caliper
Radius gage setLOCALRadius gage set
Vernier caliperLOCALVernier caliper
IAE 3M14227 Clamping fixture0AM53IAE 3M142271
IAE 3M14539 Fixture, Grinding0AM53IAE 3M145391

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-148 BRAZING FILLER POWDERLOCALCoMat 03-148
CoMat 03-227 WHITE STOP OFFD3309CoMat 03-227

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
Locating Key3A00021

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-22-326-063 Remove the Worn Locating Key

      1. Machine off worn locating key.

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

        Refer to Figure and Figure.

        Do not remove parent material.

        To get the slot dimensions traces of braze may stay.

    2. SUBTASK 72-50-22-110-266 Clean the Stage 4 Turbine Vane

      1. Clean vane.

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

    3. SUBTASK 72-50-22-220-361 Examine the Stage 4 Turbine Vane

      1. Dimensionally examine machined areas.

      1. For dimensions refer to Figure and Figure.

        Use radius gage set and dial caliper.

    4. SUBTASK 72-50-22-230-182 Examine the Machined Surfaces for Cracks

      1. Do test for cracks.

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

        Use high sensitivity level.

        No cracks are permitted.

    5. SUBTASK 72-50-22-110-267 Clean the Stage 4 Turbine Vane

      1. Clean vane.

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

    6. SUBTASK 72-50-22-330-063 Nickel Plate the Machined Surfaces

      1. Nickel plate connecting surfaces if necessary.

      1. Nickel plate is permitted to make the following braze cycle easier.

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

        Make sure that coating thickness is 0.0001 to 0.0003 in. (0.003 to 0.008 mm).

    7. SUBTASK 72-50-22-310-126 Braze in the New Locating Key

      1. Braze locating key in position.

      1. Clamp locating key to prevent movement.

        Spot welding of locating key to help brazing is permitted.

        For braze cycles refer to Figure and to the SPM TASK 70-31-09-310-501.

    8. SUBTASK 72-50-22-110-268 Clean the Stage 4 Turbine Vane

      1. Clean vane.

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

    9. SUBTASK 72-50-22-350-111 Do the Precipitation Heat Treat

      1. Precipitation heat treat stage 4 turbine vane.

      1. Refer to the SPM TASK 70-37-27-370-501, except temperature range to be 1625 deg F to 1675 deg F (885 deg C to 913 deg C) for 8 hours.

    10. SUBTASK 72-50-22-220-362 Do the Post Repair Inspection

      1. Examine reworked areas for completed braze.

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

        Remove too much braze material.

      2. Dimensionally examine new locating key.

      1. For finish dimensions refer to Figure and Figure.

        Use dial caliper and vernier caliper.

    11. SUBTASK 72-50-22-230-183-001 Do the Post Repair Inspection for Cracks

      1. Do test for cracks.

      1. Refer to the SPM TASK 70-23-04-230-501.

        No cracks are permitted.

    12. SUBTASK 72-50-22-230-183-002 Do the Post Repair Inspection for Cracks

      1. Do test for cracks.

      1. Refer to the SPM TASK 70-23-08-230-501.

        No cracks are permitted.

    13. SUBTASK 72-50-22-220-363 Examine the Honeycomb Braze Condition

      1. Visually examine honeycomb for completed braze.

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

    14. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    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
Change Type:

Editorial Change

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 03-148
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: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:LOCAL
Tool Number:Dial caliper
Tool Name:Dial caliper
Manufacturer Code:0AM53
Tool Number:IAE 3M14227
Tool Name:IAE 3M14227 Clamping fixture
Manufacturer Code:0AM53
Tool Number:IAE 3M14539
Tool Name:IAE 3M14539 Fixture, Grinding
Manufacturer Code:LOCAL
Tool Number:Radius gage set
Tool Name:Radius gage set
Manufacturer Code:LOCAL
Tool Number:Standard equipment
Tool Name:Standard equipment
Manufacturer Code:LOCAL
Tool Number:Vernier caliper
Tool Name:Vernier caliper