TASK 72-50-24-300-003 LPT Inner Diffuser Duct Segment - Blend Repair, Repair-003 (VRS4110)

DMC:V2500-A0-72-50-2401-00A-649A-C|Issue No:002.00|Issue Date:2013-11-01

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 72-50-24-300-003 LPT Inner Diffuser Duct Segment - Blend Repair, Repair-003 (VRS4110)

Effectivity

FIG/ITEM

PART NO.

01-010

3A0771

Material of component

PART IDENT

SYMBOL

MATERIAL

Inner duct segmet

Inconel 713C

MTS1189A

General

Price and availability - none

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

NOTE

  1. For equipment and materials necessary to do this repair refer to the SPM TASK 70-23-05-230-501.

  2. Equivalent equipment may be used.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Action swivel viseLOCALAction swivel vise
Radius gage setLOCALRadius gage set
Illuminated comparator magnifierLOCALIlluminated comparator magnifier
Dial caliperLOCALDial caliper
External dial caliperLOCALExternal dial caliper

0 - 0.787in. (0 - 20.0 mm)

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-24-350-051 General Instructions for the Blend Repair of the Inner Duct Segment

      1. Blend the nicks, dents or pits of the inner duct segment.

      1. Do the blend repair with the inner duct segment installed to action swivel vise.

        Use files and stones to remove the nicks, dents and pits.

        Keep the removal of the material to the minimum necessary to remove the damage.

      2. Polish the blended areas.

      1. Use fine stones to make the blended surface as smooth as the initial surface.

        Edges and corners are not permitted.

    2. SUBTASK 72-50-24-350-052 Blend Repair the Inner Duct Segment

      NOTE

      1. Refer to SUBTASK 72-50-24-350-051 before you do the blend repairs.

      2. Keep material removal to the minimum to remove damage.

      3. For local blending the length to depth ratio must be a minimum of 5:1, refer to Figure.

      4. Unless stated differently, the number of blends is not limited. If there is a number of damage marks close together, blend the whole area to the specified depth. Minimum distance between blends is 0.500in. (12.7 mm).

      1. Blend repair in area A1.

      1. Maximum permitted depth of blend repair is 0.008in. (0.20 mm).

      2. Blend repair in area A2.

      1. Dress to remove the raised material only.

      3. Blend repair the lip seal and the honeycomb.

      1. Dress to remove the raised material only.

    3. SUBTASK 72-50-24-230-055 Examine the Blend Repaired Areas for Cracks

      1. Do the test for cracks.

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

        No cracks are permitted.

    4. SUBTASK 72-50-24-220-083 Examine the Blend Repaired Area Visually and Dimensionally

      1. Examine the surface of the blended areas visually.

      1. Use illuminated comparator magnifier.

        The blended surface must be as smooth as the initial surface.

        Edges and corners are not permitted.

      2. Examine the blend repaired areas dimensionally.

      1. Measure the dimensions of the blended areas with dial caliper and external dial caliper.

        The limits are given in Step.

        Use radius gage set to examine the radius at each blend repaired area.

        Refer to Figure.

    5. SUBTASK 72-50-24-380-051 Replace the Coating of the Blended Areas of the Gas Washed Surface

      1. Touch-up blended areas of gas washed surfaces.

      1. Refer to Repair, VRS4111 TASK 72-50-24-300-004 (REPAIR-004) for touch-up coating repair.

    6. Figure: Blend repair the inner duct segment

    Blend repair the inner duct segment

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial correction due to conversion

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Action swivel vise
Tool Name:Action swivel vise
Manufacturer Code:LOCAL
Tool Number:Dial caliper
Tool Name:Dial caliper
Manufacturer Code:LOCAL
Tool Number:External dial caliper
Tool Name:External dial caliper
Manufacturer Code:LOCAL
Tool Number:Illuminated comparator magnifier
Tool Name:Illuminated comparator magnifier
Manufacturer Code:LOCAL
Tool Number:Radius gage set
Tool Name:Radius gage set