TASK 72-44-50-300-005 HPT Stage 1 Cooling (TOBI) Duct - Inner Liner Snap Diameter Plasma Spray Repair, Repair-005 (VRS3181)

DMC:V2500-A0-72-44-5001-01A-609A-C|Issue No:005.00|Issue Date:2020-08-01

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 72-44-50-300-005 HPT Stage 1 Cooling (TOBI) Duct - Inner Liner Snap Diameter Plasma Spray Repair, Repair-005 (VRS3181)

Effectivity

FIG/ITEM

PART NO.

ASSEMBLY GROUP

01-010

2A0008-01

A

01-010

2A1997-01

A

01-010

2A1997-001

A

01-010

2A1997-002

A

01-010

2A1997-003

A

01-010

2A2141-01

B

01-010

2A3180-01

B

01-010

2A3329-01

B

01-010

2A3487-01

B

01-010

2A3487-001

B

01-010

2A3491-01

B

01-010

2A3914-01

B

01-010

2A3914-001

B

01-010

2A4086

B

Material of component

PART IDENT

SYMBOL

MATERIAL

Stage 1 HPT cooling

(TOBI) duct assembly

-

Nickel alloy

General

Price and availability - refer to IAE

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

NOTE

To identify the consumable materials refer to PCI.

Preliminary Requirements

Pre-Conditions

Action/ConditionData Module/Technical Publication
Make sure that all cleaning and inspection procedures are done before this repair.

Support Equipment

NONE

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-047 TAPE, HEAT REFLECTIVELOCALCoMat 02-047
CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5)33870CoMat 03-089

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
PIN - SHOULDER0AM532A08691

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-44-50-320-054 Remove the Locating Pin from the Stage 1 HPT Cooling Duct

    1. Refer to Figure.

    2. Drill out the flared shank with a bit that is slightly smaller than 0.182 in. (4.6228 mm) diameter.

    3. Use a drift to push out the remaining part of the 2A0869 PIN - SHOULDER that is in the hole.

    2. SUBTASK 72-44-50-330-051 Remove the Existing Coating by Stripping

    1. The stripping procedure is only for TOBI ducts that were repaired per VRS3181 before. If this procedure was done before, VRS3181 will be next to the part number. If the repair was not done before, remove the wear by machining. Refer to Step.

    2. Refer to Figure, Figure and Figure.

      3. Strip to remove the coating from Diameter F.

      1. Apply masks or maskants to the areas not to be stripped. Refer to the SPM TASK 70-38-24-300-503. Use CoMat 02-047 TAPE, HEAT REFLECTIVE or equivalent.

      2. Strip the coating by the procedure given in SPM TASK 70-33-78-300-503.

    3. SUBTASK 72-44-50-320-052 Remove the Coating and/or Wear by Machining

    1. Refer to Figure, Figure and Figure.

      2. Machine to remove the coating and/or wear from Diameter F.

      1. Machine the diameter to the before plasma coat dimensions shown in Figure and Figure.

      2. Remove the minimum amount of material possible to keep in the limits given in the figure.

      3. Break the edges 0.003 in. to 0.015 in. (0.076 mm to 0.381 mm).

    4. SUBTASK 72-44-50-230-073 Do a Fluorescent Penetrant Inspection of the Repair Area

    1. If grind procedure is done, do a fluorescent penetrant inspection of the repair area.

    5. SUBTASK 72-44-50-110-066 Clean the Stage 1 HPT Cooling Duct

    1. Clean the stage 1 HPT cooling duct by aqueous cleaning.

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

    6. SUBTASK 72-44-50-220-127 Examine the Repair Area

    1. Refer to Figure, Figure and Figure.

    2. Do a dimensional and visual inspection of the repair area.

    7. SUBTASK 72-44-50-350-090 Grit Blast the Repair Area

    1. Refer to Figure, Figure and Figure.

      2. Prepare the repair area for plasma coat by SPM TASK 70-34-18-380-501.

      1. Grit blast out of repair area(s) is not permitted. Use masks or maskants.

    8. SUBTASK 72-44-50-340-051 Plasma Spray Repair Diameter F

    1. Refer to Figure, Figure and Figure.

      2. Plasma spray Diameter F.

      2. Refer to SPM TASK 70-34-03-340-501.

      3. No overspray is permitted. Use masks or maskants.

      4. Coat to a sufficient thickness to allow for finishing.

    9. SUBTASK 72-44-50-320-081 Remove masks or maskants.

    1. Refer to SPM TASK 70-34-18-380-501.

    10. SUBTASK 72-44-50-320-053 Finish Machine Diameter F after Plasma Spray

    1. Refer to Figure, Figure and Figure.

      2. Machine Diameter F after plasma spray. Refer to SPM TASK 70-32-07-100-501.

      1. The minimum thickness of the plasma coat must be 0.003 in. (0.076 mm) after machining.

      2. Break the edges 0.003 in. to 0.015 in. (0.076 mm to 0.381 mm).

    11. SUBTASK 72-44-50-110-067 Clean the Part

    1. Clean the part by aqueous cleaning.

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

    12. SUBTASK 72-44-50-220-072 Examine the Repair

    1. Refer to Figure, Figure and Figure.

    2. Do a visual inspection of the coating. Refer to SPM TASK 70-34-03-340-501.

    3. Do a dimensional inspection of the plasma spray area. See Figure and Figure.

    13. SUBTASK 72-44-50-350-060 Identify the Repair

    1. If VRS3181 is marked on the duct, it is not necessary to do this procedure.

      2. Mark VRS3181 adjacent to the part number.

      1. Make a permanent mark by the procedure given in the SPM TASK 70-09-00-400-501.

      2. Use the vibration peen method.

    14. SUBTASK 72-44-50-350-061 Install a New Locating Pin to the Stage 1 HPT Cooling Duct

    1. Refer to Figure.

      2. Install a new 2A0869 PIN - SHOULDER to the duct in the correct position in the flange hole.

      1. Use an applicable flaring tool to flare the locating pin to install it tightly.

      2. Support the flange during pin installation to prevent flange deflection.

    15. Figure: Repair Locations

    Repair Locations

    Figure: Repair Dimensions (For Assembly Group A Part Numbers)

    Repair Dimensions (For Assembly Group A Part Numbers)

    Figure: Repair Dimensions (For Assembly Group B Part Numbers)

    Repair Dimensions (For Assembly Group B Part Numbers)

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure in its entirety. (18VC436)

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:33870
Enterprise Name:PRAXAIR SURFACE TECHNOLOGIES INC.
BU Name:PRAXAIR SURFACE TECHNOLOGIES INC.
Street:1500 POLCO STREET
City:INDIANAPOLIS
State:IN
Zip Code:46222
Country:USA
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Part Number:2A0869
Part Name:PIN - SHOULDER
Manufacturer Code:0AM53
Manufacturer Code:X222X
Supply Number:CoMat 02-047
Type:sp01
Supply Short Name:CoMat 02-047 TAPE, HEAT REFLECTIVE
Supply Name:CoMat 02-047 TAPE, HEAT REFLECTIVE
Specification Groups:
Doc NumberType
If CoMat 02- 047 is specified with no suffix, use one of the CoMat 02-047 letter suffix alternative materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:33870
Supply Number:CoMat 03-089
Type:sp01
Supply Short Name:CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5)
Supply Name:CoMat 03-089 METAL SPRAYING POWDER Ni/Al (95/5)
Specification Groups:
Doc NumberType
PWA 1337 (PW REF)NI-109 or NI-970 or AI 1037
Suppliers:
ManufacturerRemarks
33870