TASK 72-40-00-300-010 No. 4 Bearing/HPT Nut - Repair The Front Inner Diameter By Nickel Plate, Repair-010 (VRS3489)

DMC:V2500-A0-72-40-0012-01A-609A-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 72-40-00-300-010 No. 4 Bearing/HPT Nut - Repair The Front Inner Diameter By Nickel Plate, Repair-010 (VRS3489)

Effectivity

FIG/ITEM PART NO.

04-020

2A0145

04-020

2A2245

04-020

2A2247

Material of component

PART IDENT

SYMBOL

MATERIAL

Bearing retaining nut

Nickel alloy

General

If you did this procedure in Rework 001, TASK 72-40-00-840-001 (REWORK-001) to get PN 2A2247, you do not have to remove the eight plugs (PN 2A2248) to do this repair.

This repair must only be done when the instruction to do so is given in 72-40-00-200-000 (INSPECTION/CHECK-000).

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

Price and availability - none

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
LatheLOCALLathe
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-021 MASKING WAX COMPOUND59460CoMat 02-021
CoMat 02-022 MASKING WAX COMPOUND0AM53CoMat 02-022
CoMat 02-023 MASKING WAX COMPOUND0AM53CoMat 02-023
CoMat 02-038 MASKING WAX COMPOUND (HIGH TEMPERATURE)IE514CoMat 02-038

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-40-00-330-057 Remove the Silver Plate and Anti-Galling Compound from the Bearing Retaining Nut

      1. Remove the silver plate and anti-galling compound from the retaining nut.

      1. Refer to Figure and SPM TASK 70-33-55-330-501.

    2. SUBTASK 72-40-00-320-052 Machine the Front Inner Diameter of the Bearing Retaining Nut

      1. Machine the front inner diameter to between 4.832 and 4.854 in. (122.73 and 123.29 mm) diameter.

      1. Refer to Figure or Figure.

        Do not machine more than the 4.854 in. (123.29 mm) maximum diameter.

        This diameter includes surfaces that are not complete.

        Be careful when you machine the surfaces.

        Grinding is permitted.

    3. SUBTASK 72-40-00-350-064 Apply Masking Wax Compound to the Areas that are not to be Nickel Plated

      1. Apply the masking wax compound to all the areas that are not to be nickel plated.

      1. Refer to Figure or Figure.

        Apply masking wax compound by the SPM TASK 70-38-24-300-503.

        No nickel plate is permitted in the cooling air holes and slots.

    4. SUBTASK 72-40-00-330-058 Nickel Plate the Front Inner Diameter of the Bearing Retaining Nut

      1. Apply the nickel plate to the front inner diameter only.

      1. Apply a sufficient thickness plate to permit the finish machining of the diameter.

    5. SUBTASK 72-40-00-320-053 Machine the Nickel Plate on the Front Inner Diameter of the Bearing Retaining Nut

      1. Machine the nickel plate on the front inner diameter.

      1. Refer to Figureor Figure.

        Machine the diameter to all the dimensions given in the figure.

        This includes all the true position requirements.

        This diameter includes surfaces that are not complete.

        Be careful when you machine the surfaces.

    6. SUBTASK 72-40-00-350-065 Remove the Masking Wax Compound from the Bearing Retaining Nut

    1. Remove the masking wax compound from the retaining nut.

    7. SUBTASK 72-40-00-220-119 Examine the Bearing Retaining Nut

      1. Examine the retaining nut.

      1. Refer to Figureor Figure.

        Make sure the front inner diameter has the requirements given in the figure. Refer to Engine Manual Inspection TASK 72-40-00-200-011 (INSPECTION/CHECK-011).

    8. SUBTASK 72-40-00-350-066 Identify the Repair

      1. Use the vibro-peen method to make a mark VRS3489 adjacent to the part number.

      1. Make a permanent mark by the SPM TASK 70-09-00-400-501.

        Refer to Figureor Figurefor the location that only permits electrical contact.

    9. Figure: Bearing retaining nut (PN 2A0145) front inner diameter machining

    Bearing retaining nut (PN 2A0145) front inner diameter machining

    Figure: Bearing retaining nut (PN 2A2245 and 2A2247) front inner diameter machining

    Bearing retaining nut (PN 2A2245 and 2A2247) front inner diameter machining

    Figure: Bearing retaining nut (PN 2A0145 and 2A2247) front inner diameter nickel plate machining

    Bearing retaining nut (PN 2A0145 and 2A2247) front inner diameter nickel plate machining

    Figure: Bearing retaining nut (PN 2A2245) front inner diameter nickel plate machining

    Bearing retaining nut (PN 2A2245) front inner diameter nickel plate machining

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:59460
Enterprise Name:PYRAMID PLASTICS INC,
BU Name:PYRAMID PLASTICS INC,
Department:TOLBER DIV.
Street:220 WEST 5TH STREET
City:HOPE
State:AR
Zip Code:71801-5212
Country:USA
Phone Number:1-870-722-5739
Fax Number:1-870-777-8056
Internet:www.tolber.com
Manufacturer Code:IE514
Enterprise Name:DELETED. Was SASOL WAX AMERICAS, INC.
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:59460
Supply Number:CoMat 02-021
Type:sp01
Supply Short Name:CoMat 02-021 MASKING WAX COMPOUND
Supply Name:CoMat 02-021 MASKING WAX COMPOUND
Specification Groups:
Doc NumberType
PMC 9551MICCROWAX C-562
Suppliers:
ManufacturerRemarks
59460
Manufacturer Code:X111X
Supply Number:CoMat 02-022
Type:sp01
Supply Short Name:CoMat 02-022 MASKING WAX COMPOUND
Supply Name:CoMat 02-022 MASKING WAX COMPOUND
Specification Groups:
Doc NumberType
DELETED. USE COMAT 02‐021.
Suppliers:
ManufacturerRemarks
X111X
Manufacturer Code:X111X
Supply Number:CoMat 02-023
Type:sp01
Supply Short Name:CoMat 02-023 MASKING WAX COMPOUND
Supply Name:CoMat 02-023 MASKING WAX COMPOUND
Specification Groups:
Doc NumberType
DELETED. USE COMAT 02-021.
Suppliers:
ManufacturerRemarks
X111X
Manufacturer Code:X111X
Supply Number:CoMat 02-038
Type:sp01
Supply Short Name:CoMat 02-038 MASKING WAX COMPOUND (HIGH TEMPERATURE)
Supply Name:CoMat 02-038 MASKING WAX COMPOUND (HIGH TEMPERATURE)
Specification Groups:
Doc NumberType
DELETED
Suppliers:
ManufacturerRemarks
X111X
Manufacturer Code:LOCAL
Tool Number:Lathe
Tool Name:Lathe
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment