TASK 72-50-24-300-047 LPT Inner Diffuser Duct Segment - Touch-up Coating After Blend Repair, Repair-047 (VRS4406)

DMC:V2500-A0-72-50-2401-06A-609A-C|Issue No:003.00|Issue Date:2014-08-01

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 72-50-24-300-047 LPT Inner Diffuser Duct Segment - Touch-up Coating After Blend Repair, Repair-047 (VRS4406)

Effectivity

FIG/ITEM

PART NO.

01-010

3A0108

01-010

3A2493

Material of component

PART IDENT

SYMBOL

MATERIAL

Inner Duct Segment

INCONNEL 713C

General

Price and availability - none

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

NOTE

For equipment and material necessary to do this repair refer to SPM TASK 70-38-14-380-501 and SPM TASK 70-09-00-400-501.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
FurnaceLOCALFurnace
Illuminated comparator magnifierLOCALIlluminated comparator magnifier
Vibrating marking pencilLOCALVibrating marking pencil
Vapor blast cabinetLOCALVapor blast cabinet

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-24-380-059 Touch-Up Coating after Blend Repair of the Inner Duct Segment

      NOTE

      This repair is only permitted in conjunction with repair instruction VRS 4411, refer to TASK 72-50-24-300-044 (REPAIR-044).
      If coating is badly damaged, then refer to VRS 4407, TASK 72-50-24-300-041, (REPAIR-041) or VRS 4408, TASK 72-50-24-300-042 (REPAIR-042).
      If honeycomb repair VRS 4409, TASK 72-50-24-300-043 (REPAIR-043) is to be carried out also, and honeycomb segment is already removed then standard diffusion heat treatment temperature at between 1950 and 2000 deg. F (1066 and 1094 deg. C) shall be used.
      Touch-up is only permitted in area A1, refer to Figure.

      1. Prepare the material and the surface.

        1. Refer to SPM TASK 70-38-14-380-501.

        1. Use vapor blast cabinet.

      2. Do the touch-up coating.

      1. Refer to SPM TASK 70-38-14-380-501.

    2. SUBTASK 72-50-24-370-060 Diffusion Heat Treatment of the Coated Inner Duct Segment

      1. Diffuse the coated inner duct segment by heat treatment.

      1. Refer to SPM TASK 70-38-14-380-501 but diffusion heat treatment between 1575 and 1625 deg. F (857 and 885 deg. C).

    3. SUBTASK 72-50-24-220-188 Do the Post Repair Inspection

      1. Visually examine the coated areas for defects.

      1. Use illuminated comparator magnifier.

      2. No defects in the surface are permitted.

    4. SUBTASK 72-50-24-380-060 Make a Mark at the Touched-Up Inner Duct Segmant with a Touch-Up Symbol (T)

      1. Mark the touched-up inner duct segment.

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

        1. Position the touch-up symbol (T) adjacent to the part number.

        2. Use the vibration-peening method and vibration marking pencil.

    5. Figure: Touch-up coating of the inner duct segment

    Touch-up coating of the inner duct segment

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised text for clarity. (editorial change)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Furnace
Tool Name:Furnace
Manufacturer Code:LOCAL
Tool Number:Illuminated comparator magnifier
Tool Name:Illuminated comparator magnifier
Manufacturer Code:LOCAL
Tool Number:Vapor blast cabinet
Tool Name:Vapor blast cabinet
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