TASK 72-42-11-300-003 Diffuser Case - Replace The Clinch Nut - Repair-003 (VRS3028)

DMC:V2500-A0-72-42-1100-02A-920A-C|Issue No:002.00|Issue Date:2021-08-01

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 72-42-11-300-003 Diffuser Case - Replace The Clinch Nut - Repair-003 (VRS3028)

Effectivity

FIG/ITEM

PART NO.

01-010

2A0051

01-010

2A0051-001

01-010

2A0051-002

01-010

2A0051-003

01-010

2A0051-004

01-010

2A2081-01

01-010

2A2081-101

01-010

2A2081-201

01-010

2A2081-301

01-010

2A2081-401

01-010

2A2581-01

01-010

2A2581-101

01-010

2A2581-201

01-010

2A2581-301

01-010

2A2581-401

01-010

2A2883-01

01-010

2A2883-101

01-010

2A2883-201

01-010

2A2883-301

01-010

2A2883-401

01-010

2A2885-01

01-010

2A2885-101

01-010

2A2885-201

01-010

2A2885-301

01-010

2A2885-401

01-010

2A2889-01

01-010

2A2889-101

01-010

2A2889-201

01-010

2A2889-301

01-010

2A2889-401

01-010

2A2891-01

01-010

2A2891-101

01-010

2A2891-201

01-010

2A2891-301

01-010

2A2891-401

01-010

2A2896-01

01-010

2A2896-101

01-010

2A2896-201

01-010

2A2896-301

01-010

2A2896-401

01-010

2A2897-01

01-010

2A2897-101

01-010

2A2897-201

01-010

2A2897-301

01-010

2A2897-401

01-010

2A3132

01-010

2A3132-001

01-010

2A3132-002

01-010

2A3132-003

01-010

2A3132-004

Material of component

DESCRIPTION

SYMBOL

MATERIAL

Diffuser case assembly

-

Nickel Alloy

General

Price and availability - refer to IAE

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

Preliminary Requirements

Pre-Conditions

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

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
NUT - OPTION7744549467430

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-11-350-059-001 Remove the Loose or Damaged Clinch Nut from the Diffuser Case

    1. Refer to Figure.

      2. Drill the flared shank on the damaged clinch nut.

      1. CAUTION

        TAKE EXTREME CARE WHEN YOU DRILL OR DAMAGE TO THE FLANGE CAN OCCUR.

        Drill the center of the flared shank with a drill bit that is smaller than the outer diameter of the nut. Do not make the hole larger.

      3. Remove the nut from the flange hole.

      1. Use a standard punch to remove the nut.

    2. SUBTASK 72-42-11-350-059-002 Remove the Loose or Damaged Clinch Nut from the Diffuser Case

    1. Refer to Figure.

      2. Remove the damaged clinch nut from the flange hole on the diffuser case.

      1. CAUTION

        TAKE EXTREME CARE WHEN YOU HIT BOLT OR DAMAGE TO THE FLANGE CAN OCCUR.

        Install a 0.250-28 work bolt in the first two or three threads of the nut on the flared side. Lightly hit the work bolt to push the nut out of the flange hole.

    3. SUBTASK 72-42-11-110-076 Clean the Clinch Nut Holes

    1. Refer to Figure.

    2. Clean the repair area by SPM TASK 70-11-26-300-503.

    4. SUBTASK 72-42-11-230-072 Examine the Clinch Nut Holes

    1. Refer to Figure.

    2. Do a fluorescent penetrant inspection of the holes and the adjacent surfaces by SPM TASK 70-23-05-230-501, high sensitivity.

    3. Do a visual inspection of the holes and the adjacent surfaces. Damage is not permitted.

    5. SUBTASK 72-42-11-350-060 Install the Clinch Nut in the Diffuser Case

    1. Refer to Figure.

    2. Install the new clinch nut in the flange hole on the diffuser case.

      3. Flare the nut.

      1. Use a standard 30 degree conical flaring tool. Do not thread the flaring tool into the part of the nut that is self-locking.

    6. SUBTASK 72-42-11-220-070 Examine the Repair

    1. Refer to Figure.

      2. Examine the nut by the dimension given in the figure.

      1. The flared end of the nut must be equal to or below Surface C.

    3. Do a visual inspection of the installed nuts for cracks. Cracks are not permitted.

    7. Figure: Diffuser Case Clinch Nut Repair Areas

    Diffuser Case Clinch Nut Repair Areas

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure in its entirety. (20VC238)

Manufacturer Code:77445
Enterprise Name:PRATT AND WHITNEY
BU Name:PRATT & WHITNEY
Street:400 MAIN STREET
City:EAST HARTFORD
Country:USA
Phone Number:8605657700
Part Number:494674
Part Name:NUT - OPTION
Manufacturer Code:77445