TASK 72-50-32-300-022 LPT Stage 4 Blade - Restore Shroud Pre-Twist, Repair-022 (VRS4200)

DMC:V2500-A0-72-50-3204-00A-635A-C|Issue No:003.00|Issue Date:2019-08-01

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 72-50-32-300-022 LPT Stage 4 Blade - Restore Shroud Pre-Twist, Repair-022 (VRS4200)

Effectivity

FIG/ITEM

PART NO.

01-150

3A0884

Material of component

PART IDENT

SYMBOL

MATERIAL

Stage 4 turbine blade

Inconel 713

General

Price and availability - none

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

Only one pre-twist repair is permitted per part. A "W" marking adjacent to the part number shows that the part was repaired before.

NOTE

  1. For more equipment and materials necessary to do this repair, refer to:

  2. Equivalent materials or equipment can 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.

NOTE

Before repair, write down the turbine blade part number and serial number.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
IAE 3M14481 Fixture check and correct0AM53IAE 3M144811
IAE 3M14482 Blade holder0AM53IAE 3M144821

or

IAE 3M14495 Bladeholder0AM53IAE 3M144951
IAE 3M14485 Handle twist0AM53IAE 3M144851
IAE 3M14493 Gage, inspection0AM53IAE 3M144931
IAE 3M14494 Gage, master0AM53IAE 3M144941

or

IAE 3M14543 Gage, master0AM53IAE 3M145431

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-029 CAST STEEL SHOT, S110LOCALCoMat 05-029
CoMat 05-030 CAST STEEL SHOT DELETED0AM53CoMat 05-030

DELETED

CoMat 05-031 CAST STEEL SHOT DELETED0AM53CoMat 05-031

DELETED

CoMat 05-138 SHOT, CAST STEEL, S11011851CoMat 05-138
CoMat 05-177 CUT WIRE SHOT,CW-14LOCALCoMat 05-177

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-32-350-097 Restore Pre-Twist on Outer Shroud

    1. Refer to Figure.

      NOTE

      Use a test piece to evaluate amount of twist necessary to get a permanent set of necessary pre-twist value. Twist-back of outer shroud is not permitted if achieved pre-twist is out of limits.

      2. Twist the stage 4 turbine blade.

      1. Use IAE 3M14481 Fixture check and correct 1 off, IAE 3M14482 Blade holder 1 off or IAE 3M14495 Bladeholder 1 off, IAE 3M14485 Handle twist 1 off, IAE 3M14493 Gage, inspection 1 off and IAE 3M14494 Gage, master 1 off or IAE 3M14543 Gage, master 1 off.

        Do not bend outer shroud and airfoil section axially or circumferentially.

    2. SUBTASK 72-50-32-220-200 Examine the Twisted Outer Shroud

    1. Refer to Figure.

      2. Examine dimensionally.

      1. Repeat Step if blade is not within tolerances shown.

    3. SUBTASK 72-50-32-370-067 Heat Treatment after Twisting

      NOTE

      Do the stress-relief after all weld operations.

      1. Stress relieve the turbine blade.

      1. Refer to the SPM TASK 70-37-10-370-501, Stress-Relief Cycle 5.

    4. SUBTASK 72-50-32-230-102 Examine the Stage 4 Turbine Blade for Cracks

      1. Do the test for cracks.

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

        No cracks are permitted.

    5. SUBTASK 72-50-32-110-092 Clean the Stage 4 Turbine Blade

      1. Aqueous cleaning.

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

    6. SUBTASK 72-50-32-380-069 Shotpeen the Surface A1 of the Stage 4 Turbine Blade

    1. Refer to Figure.

      NOTE

      Do the shotpeening after all weld operations.

    2. Mask area A3.

      3. Shotpeen area A1.

      1. Refer to the SPM TASK 70-38-13-380-501.

        Use CoMat 05-029 CAST STEEL SHOT, S110 or CoMat 05-138 SHOT, CAST STEEL, S110 or CoMat 05-177 CUT WIRE SHOT,CW-14 to an intensity of 6A.

        Shotpeen blade root flanks plus corner radii to end faces.

        Shotpeening is permitted in area A2.

      4. Remove the masking.

      1. Remove masking.

    7. SUBTASK 72-50-32-220-201 Examine the Stage 4 Turbine Blade Markings

      1. Examine the markings of part number and serial number.

      1. If you cannot read the markings, make new marks.

        Use the roll stamp method.

        Refer to the SPM TASK 70-09-00-400-501.

    8. SUBTASK 72-50-32-350-098 Make a Mark to Identify the Repair

      1. Vibropeen VRS4200 and symbol "W" adjacent to the part number.

      1. Refer to the SPM TASK 70-09-00-400-501.

    9. 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:

Modified list of Support Equipment

Change Type:

Modified list of Consumables, materials and expendables

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:11851
Enterprise Name:DANIELS MANUFACTURING CORP
BU Name:DANIELS MANUFACTURING CORP
Street:526 THORPE RD
City:ORLANDO
State:FL
Zip Code:32824
Country:USA
Phone Number:1-407-855-6161
Fax Number:1-407-855-6884
Internet:www.dmctools.com
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:55807
Supply Number:CoMat 05-029
Type:sp01
Supply Short Name:CoMat 05-029 CAST STEEL SHOT, S110
Supply Name:CoMat 05-029 CAST STEEL SHOT, S110
Specification Groups:
Doc NumberType
AMS 2431/1 ASR 110
Suppliers:
ManufacturerRemarks
55807
Manufacturer Code:0AM53
Supply Number:CoMat 05-030
Type:sp01
Supply Short Name:CoMat 05-030 CAST STEEL SHOT DELETED
Supply Name:CoMat 05-030 CAST STEEL SHOT DELETED
Specification Groups:
Doc NumberType
DELETED
Suppliers:
ManufacturerRemarks
0AM53
Manufacturer Code:0AM53
Supply Number:CoMat 05-031
Type:sp01
Supply Short Name:CoMat 05-031 CAST STEEL SHOT DELETED
Supply Name:CoMat 05-031 CAST STEEL SHOT DELETED
Specification Groups:
Doc NumberType
DELETED
Suppliers:
ManufacturerRemarks
0AM53
Manufacturer Code:55807
Supply Number:CoMat 05-138
Type:sp01
Supply Short Name:CoMat 05-138 SHOT, CAST STEEL, S110
Supply Name:CoMat 05-138 SHOT, CAST STEEL, S110
Specification Groups:
Doc NumberType
AMS 2431/1 ASR 110, HARDNESS 45-55 HRC
Suppliers:
ManufacturerRemarks
55807
Manufacturer Code:0FUN2
Supply Number:CoMat 05-177
Type:sp01
Supply Short Name:CoMat 05-177 CUT WIRE SHOT,CW-14
Supply Name:CoMat 05-177 CUT WIRE SHOT,CW-14
Specification Groups:
Doc NumberType
AMS 2431/3 AWCR 14 HARDNESS 45-55 HRC
Suppliers:
ManufacturerRemarks
0FUN2
29978
S5114
Manufacturer Code:0AM53
Tool Number:IAE 3M14481
Tool Name:IAE 3M14481 Fixture check and correct
Manufacturer Code:0AM53
Tool Number:IAE 3M14482
Tool Name:IAE 3M14482 Blade holder
Manufacturer Code:0AM53
Tool Number:IAE 3M14485
Tool Name:IAE 3M14485 Handle twist
Manufacturer Code:0AM53
Tool Number:IAE 3M14493
Tool Name:IAE 3M14493 Gage, inspection
Manufacturer Code:0AM53
Tool Number:IAE 3M14494
Tool Name:IAE 3M14494 Gage, master
Manufacturer Code:0AM53
Tool Number:IAE 3M14495
Tool Name:IAE 3M14495 Bladeholder
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