TASK 72-50-25-840-001 LPT Outer Diffuser Support - Replace The Self-Locking Clinch Nuts, Rework-001 - SBE 72-0110

DMC:V2500-A0-72-50-2502-05A-920A-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 72-50-25-840-001 LPT Outer Diffuser Support - Replace The Self-Locking Clinch Nuts, Rework-001 - SBE 72-0110

Effectivity

FIG/ITEM PART NO.

01-010

3A0084

General

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

Refer to the indicated Service Bulletin for specific application requirements

NOTE

  1. For more equipment and materials necessary to do this rework refer to the SPM TASK 70-09-00-400-501.

  2. Equivalent equipment may be used.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Hydraulic portable yoke riveterLOCALHydraulic portable yoke riveter
Electric hand drillLOCALElectric hand drill
Illuminated comparator magnifierLOCALIlluminated comparator magnifier

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-25-040-051 Disassemble Instructions

      1. Remove the outer diffuser support assemblies.

      1. Refer to TASK 72-50-25-040-011.

    2. SUBTASK 72-50-25-320-053 Remove the Worn Nuts (01-030)

      1. Machine off the flared part of the worn self-locking clinch nuts.

      1. Damage at the chamfers, the bore and the faces of the outer diffuser support assembly is not permitted.

        Refer to Figure.

        Use electric hand drill.

      2. Hit lightly the remainder of the nut and shaft to remove it from the outer diffuser support assembly.

      1. Use flat-nosed punch or similar equipment.

    3. SUBTASK 72-50-25-220-082 Examine the Outer Diffuser Support Assembly for Damage

      1. Examine the inner diameter of the hole for damage.

      1. Fine scratches are permitted.

        Remove raised material.

        Refer to Figure.

    4. SUBTASK 72-50-25-350-058 Install the New Self-Locking Clinch Nuts

      1. Install the hollow sections of the new self-locking clinch nuts in to the holes.

      1. Make sure that the shoulders of the self-locking clinch nuts are installed so that they cannot rotate.

        Refer to Figure.

      2. Flare over the location diameter of the self-locking clinch nuts.

      1. Use hydraulic portable yoke riveter.

        Axial movement of the nut up to 0.010in. (0.25 mm) is permitted.

        Refer to Figure.

    5. SUBTASK 72-50-25-220-083 Do the Post Repair Inspection

      1. Visually examine the installed self-locking clinch nuts for cracks.

      1. No cracks are permitted.

        Use illuminated comparator magnifier.

      2. Examine the outer diffuser support for correct assembly.

      1. The flared area of the self-locking clinch nuts must be continuous with no broken or rough edges.

        Use the illuminated comparator magnifier.

    6. SUBTASK 72-50-25-850-051 Identify the Outer Diffuser Support Assembly with the New Part Number

      1. Identify the outer diffuser support assembly with the new part number adjacent to the part number that was before.

      1. NUMBER BEFORE - 3A0084.

        NEW NUMBER - 3A1907.

      2. Electrolytically etch or vibro-peen the new PART NUMBER 3A1907 adjacent to the existing PART NUMBER.

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

    7. SUBTASK 72-50-25-440-051 Assembly Instructions

      1. Install the outer diffuser support assemblies.

      1. Refer to TASK 72-50-25-430-011.

    8. Figure: Replace the self-locking clinch nuts of the outer diffuser support assembly

    Replace the self-locking clinch nuts of the outer diffuser support assembly

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Electric hand drill
Tool Name:Electric hand drill
Manufacturer Code:LOCAL
Tool Number:Hydraulic portable yoke riveter
Tool Name:Hydraulic portable yoke riveter
Manufacturer Code:LOCAL
Tool Number:Illuminated comparator magnifier
Tool Name:Illuminated comparator magnifier