TASK 72-50-31-300-013 LPT Stage 4 Disk - Blend Repair, Repair-013 (VRS4169)

DMC:V2500-A0-72-50-3104-00A-649A-C|Issue No:004.00|Issue Date:2019-05-01

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 72-50-31-300-013 LPT Stage 4 Disk - Blend Repair, Repair-013 (VRS4169)

Effectivity

FIG/ITEM

PART NO.

01-150

3A0794

01-150

3A1984

Material of component

PART IDENT

IAE SYMBOL

MATERIAL

Stage 4 turbine disk

Inconel 718

General

Price and availability - none

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

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

Repair Facilities

The source demonstration requirements of this repair means that any facility not authorized to accomplish this repair either, utilize the authorized repair vendors listed below or contact the IAE repair services group to determine if a qualification program can be initiated at their facility.

IAE International Aero Engines AG

400 Main Street, M/S 121-10

East Hartford, CT 06118

USA

Attn: Manager Repair Services

Authorized repair vendors for shotpeen Repair, VRS4169 TASK 72-50-31-300-013 (REPAIR-013) are listed below.

MTU Aero Engines AG

Dachauer Strasse 665

80995 Muenchen

Germany

The designation by IAE of an authorized repair vendor indicates that the repair vendor has demonstrated the necessary capability to enable him to carry out the listed repair work. However, IAE make no warranties or representations concerning the qualifications or quality standards of the repair vendors to carry out the repair work, and accepts no responsibility whatsoever for any work that may be carried out by a repair vendor, other than when IAE is listed as the repair vendor. Authorized repair vendors do not act as agents or representatives of IAE.

NOTE

For more equipment and materials necessary to do this repair, refer to the SPM TASK 70-11-39-300-503, SPM TASK 70-23-05-230-501, SPM TASK 70-35-19-350-501, SPM TASK 70-35-03-300-501, and SPM TASK 70-38-13-380-501.
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 01-103 FERRIC CHLORIDE HEXAHYDRATEK6835CoMat 01-103
CoMat 05-029 CAST STEEL SHOT, S110LOCALCoMat 05-029
CoMat 05-138 SHOT, CAST STEEL, S11011851CoMat 05-138
CoMat 05-177 CUT WIRE SHOT,CW-14LOCALCoMat 05-177
CoMat 05-248 CONDITIONED CUT-WIRE STEEL SHOT, SIZE SAE J441 CW-14LOCALCoMat 05-248

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-31-350-058 Blend Repair of the Stage 4 Turbine Disk

    1. Refer to Figure, Figure, Figure, and Figure.

      NOTE

      Refer to the SPM TASK 70-35-03-300-501 for blending surface damage.
      For local blending the length to depth ratio must be a minimum of 100 to 1, refer to Figure.
      If there is a number of damage marks together blend the whole area to the specified depth. Unless given differently, there is no limit for the number of blends.
      For direction of blend repair, where specified, refer to Figure, Figure, and Figure.

      2. Blend repair in area A1.

      1. No blends permitted.

      3. Blend repair in area A2.

      1. Maximum permitted blend depth is 0.006 in. (0.15 mm), if not specified differently in other areas.

      4. Blend repair in area A3 (tiebolt holes).

      1. Maximum permitted diameter of the holes is 0.2618 in. (6.65 mm).

        Round bottom dents to a maximum depth of 0.005 in. (0.13 mm) are permitted in the lead-in radii without blendings, if any raised material is removed.

        Refer to the SPM TASK 70-35-19-350-501.

      5. Blend repair in area A3.1 (slots).

      1. Damage not more than 0.002 in. (0.05 mm) maximum depth to be blended to a 0.003 in. (0.08 mm) maximum depth.

        Blend to sufficient depth to remove damage plus an additional 0.001 in. (0.03 mm).

        Round bottom dents to a maximum depth of 0.005 in. (0.13 mm) are permitted in the lead-in radii without blendings, if any raised material is removed.

        Refer to the SPM TASK 70-35-19-350-501.

      6. Blend repair in area A4.

      1. Maximum permitted blend depth is 0.010 in. (0.25 mm).

        To permit measure of disk growth, four opposite disk lobes spaced approximately 90 degrees apart must stay unblended.

        Use a length to depth ratio of 15:1 minimum.

      7. Blend repair in area A5.

      1. Maximum permitted blend depth is 0.035 in. (0.89 mm).

        Use a length to depth ratio of 15:1 minimum.

      8. Blend repair in area A6.

      1. Maximum permitted blend depth is 0.006 in. (0.15 mm).

        Use a length to depth ratio of 30:1 minimum to put back firtree contour.

      9. Blend repair in area A6.1.

      1. Round corners to maximum radius contour.

      10. Blend repair in area A7 (without areas A6.1 and A10).

      1. Maximum permitted blend depth is 0.006 in. (0.15 mm).

        Use a length to depth ratio of 15 to 1 minimum.

      11. Blend repair in area A8 (without areas A8.1, A8.2, and A8.3).

      1. Maximum permitted local blend depth is 0.004 in. (0.10 mm).

        For blend areas 0.0625 sqin. (40.30 sqmm) or more damage not more than 0.002 in. (0.05 mm) maximum depth to be blended to a 0.003 in. (0.08 mm) maximum depth.

        Blend to sufficient depth to remove damage plus an additional 0.001 in. (0.03 mm).

        Use a length to depth ratio of 50 to 1 minimum.

      12. Blend repair in area A8.1.

      1. Damage not more than 0.002 in. (0.05 mm) maximum depth to be blended to a 0.003 in. (0.08 mm) maximum depth.

        Blend to sufficient depth to remove damage plus an additional 0.001 in. (0.03 mm).

        The total area of blend repair must not be more than 30 percent of the whole area A8.1.

        Use a length to depth ratio of 30 to 1 minimum.

      13. Blend repair in area A8.2.

      1. Damage not more than 0.002 in. (0.05 mm) maximum depth to be blended to a 0.003 in. (0.08 mm) maximum depth.

        Blend to sufficient depth to remove damage plus an additional 0.001 in. (0.03 mm).

        The total area of blend repair must not be more than 30 percent of the whole area A8.2.

        Use a length to depth ratio of 50 to 1 minimum.

      14. Blend repair in area A8.3.

      1. Damage not more than 0.002 in. (0.05 mm) maximum depth to be blended to a 0.003 in. (0.08 mm) maximum depth.

        Blend to sufficient depth to remove damage plus an additional 0.001 in. (0.03 mm).

        The total area of blend repair must not be more than 50 percent of the whole area A8.3.

        Use a length to depth ratio of 30 to 1 minimum.

      15. Blend repair in area A9.

      1. Damage not more than 0.002 in. (0.05 mm) maximum depth to be blended to a 0.003 in. (0.08 mm) maximum depth.

        Blend to sufficient depth to remove damage plus an additional 0.001 in. (0.03 mm).

        After blend repair locally etch blended areas per the SPM TASK 70-11-39-300-503.

        No more than 25 blends are permitted.

        If more than 25 blends are necessary do the skim machining, refer to Repair VRS 4543 TASK 72-50-31-300-039 (REPAIR-039).

      16. Blend repair in area A10.

      1. Round corners to maximum radius contour.

      17. Blend repair in area A11.

      1. Maximum permitted blend depth is 0.006 in. (0.15 mm).

        No more than 25 blends are permitted.

        If more than 25 blends are necessary do the skim machining, refer to Repair VRS 4543 TASK 72-50-31-300-039 (REPAIR-039).

      18. Blend repair in area A16.

      1. Maximum permitted blend depth is 0.006 in. (0.15 mm).

        No more than 25 blends are permitted.

        If more than 25 blends are necessary do the skim machining, refer to Repair VRS 4543 TASK 72-50-31-300-039 (REPAIR-039).

      19. Blend repair in area A17.

      1. Maximum permitted blend depth is 0.006 in. (0.15 mm).

        No more than 25 blends are permitted.

        If more than 25 blends are necessary do the skim machining, refer to Repair VRS 4543 TASK 72-50-31-300-039 (REPAIR-039).

      20. Blend repair in area A18.

      1. Maximum permitted blend depth is 0.006 in. (0.15 mm).

        No more than 25 blends are permitted.

        If more than 25 blends are necessary do the skim machining, refer to Repair VRS 4543 TASK 72-50-31-300-039 (REPAIR-039).

    2. SUBTASK 72-50-31-230-059 Examine the Blended Areas for Cracks

      1. Do the test for cracks.

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

        Use ultra high sensitivity level.

        No cracks are permitted.

    3. SUBTASK 72-50-31-350-095 Polish the Repaired Areas of Stage 4 Turbine Disk

    1. Refer to Figure and Figure.

      2. Butterfly polish all repaired holes and slots.

      1. Refer to the SPM TASK 70-35-19-350-501.

      3. Polish etched areas on area A9.

      1. Remove all signs of etch, before shotpeening.

    4. SUBTASK 72-50-31-220-113 Do the Post Repair Inspection

    1. Refer to Figure, Figure, Figure, and Figure.

      2. Examine the surface finish.

      1. The surface finish of all repairs must be 32 microinch RMS (0.8 micrometer Ra).

      3. Examine the blended areas dimensionally.

      1. The blend ratio must be in the limits.

    5. SUBTASK 72-50-31-380-057 Shotpeen the Repaired Areas of Stage 4 Turbine Disk

    1. Refer to Figure, Figure, Figure, and Figure.

      NOTE

      This SUBTASK requires source demonstration.
      Refer to Repair Facilities in the Common Information section for further information.

      2. Shotpeen area A15, if area A9 or A11 have been repaired.

      1. Refer to Repair Facilities in the Common Information section for further information.

      3. Shotpeen area A10, if repaired.

      1. Refer to Repair Facilities in the Common Information section for further information.

      4. Shotpeen area A12, if area A6 and A6.1 have been repaired.

      1. Refer to Repair Facilities in the Common Information section for further information.

    6. SUBTASK 72-50-31-350-070 Do the Post Repair

      1. Rebalance the stage 4 turbine disk.

      1. Repair, VRS4171 TASK 72-50-31-300-015 (REPAIR-015).

    7. 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

    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:

Revision Update. (88VM503L)

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:K6835
Enterprise Name:MED-LAB LTD
BU Name:MED-LAB LTD
Street:COPELAND ST
City:DERBY
Zip Code:DE1 2PU
Country:GREAT BRITAIN
Phone Number:44-1332-349094
Fax Number:44-1332-371237
Email:sales@med-lab.co.uk
Internet:www.med-lab.co.uk
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:K6835
Supply Number:CoMat 01-103
Type:sp01
Supply Short Name:CoMat 01-103 FERRIC CHLORIDE HEXAHYDRATE
Supply Name:CoMat 01-103 FERRIC CHLORIDE HEXAHYDRATE
Specification Groups:
Doc NumberType
TECHNICAL GRADE: LUMPED FeCl3.6H20OMAT: 123B (RR REF)
PMC 9726-1 (PW REF)
MTH 190 (MTU REF)
Suppliers:
ManufacturerRemarks
K6835
70657
LOCAL
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: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:0FUN2
Supply Number:CoMat 05-248
Type:sp01
Supply Short Name:CoMat 05-248 CONDITIONED CUT-WIRE STEEL SHOT, SIZE SAE J441 CW-14
Supply Name:CoMat 05-248 CONDITIONED CUT-WIRE STEEL SHOT, SIZE SAE J441 CW-14
Specification Groups:
Doc NumberType
CONDITIONED CUT-WIRE STEEL SHOT, SIZE SAE J441 CW-14, HARDNESS 55 - 62 HRC
Suppliers:
ManufacturerRemarks
0FUN2
V527V