TASK 72-50-21-300-011 LPT Case - Replace The Identity Bracket Or The Clip Nuts, Repair-011 VRS4014

DMC:V2500-A0-72-50-2101-02A-920A-C|Issue No:001.00|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 72-50-21-300-011 LPT Case - Replace The Identity Bracket Or The Clip Nuts, Repair-011 VRS4014

Effectivity

FIG/ITEM PART NO.

01-010

3A0807

01-010

3A0990

01-010

3A0991

01-010

3A1908

01-010

3A2183

01-010

3A2265

01-010

3A2447

01-010

3A2533

Material of component

DESCRIPTION SYMBOL MATERIAL

LP turbine case

Inconel 718

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 materials necessary to do this repair refer to the SPM TASK 70-11-03-300-503, SPM TASK 70-23-05-230-501, SPM TASK 70-39-03-390-501
Equivalent materials or equipment may be used.

NOTE

If only the clip nuts are defect, and must be replaced, the identity bracket must not be removed from the LP turbine case.
If the identity bracket or the rivets must be replaced the identity bracket must be removed from the LP turbine case.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
Bracket3A08571
Rivet-solid, universal headAN1233994
Nut-clip, assy, self lock4W00432

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-21-350-079 Remove Damaged or Worn Clip Nuts

      1. Remove the damaged parts.

      1. Refer to Figure.

        After replacement of the parts no damage is permitted.

    2. SUBTASK 72-50-21-350-080 Remove the Identity Bracket

      1. Remove the rivets.

      1. Refer to Figure.

        Drill or grind off heads.

        Do not damage LP turbine case during this procedure.

        Hit through remainder of rivet shafts. Use minimum of force to prevent damage of the case assy.

      2. Remove the identity bracket.

      1. Refer to Figure.

    3. SUBTASK 72-50-21-230-084 Examine the Local Surfaces for Cracks

      1. Do the test for cracks.

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

        Use medium sensitivity level.

        No cracks are permitted.

    4. SUBTASK 72-50-21-110-083 Clean the LP Turbine Case

      1. Aqueous degrease.

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

    5. SUBTASK 72-50-21-220-136 Examine the Rivet Holes for Wear

      1. Dimensionally examine.

      1. For actual dimensions refer to Figure.

    6. SUBTASK 72-50-21-320-059 Assemble the Replacement Parts

      1. Assemble identity bracket with rivets.

      1. Make sure that the identity bracket is aligned correctly before installation.

        Attach the identity bracket with the rivets to the LP turbine case. Refer to the SPM TASK 70-39-03-390-501.

      2. Install the clip nuts if removed.

      1. Refer to Figure.

    7. SUBTASK 72-50-21-220-137 Do the Post Repair Inspection

      1. Visually examine the quality after machine riveting and the security of joints.

      1. For acceptance standards refer to the SPM TASK 70-39-03-390-501.

    8. Figure: Replacement of the identity bracket, the rivets and the clip nuts

    Replacement of the identity bracket, the rivets and the clip nuts

    Figure: Replacement of the identity bracket, the rivets and the clip nuts

    Replacement of the identity bracket, the rivets and the clip nuts

Requirements After Job Completion

Follow-On Conditions

NONE
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