TASK 72-31-12-300-007 LPC Fan Disk - Replace The Shank Nuts, Repair-007 (VRS1157)

DMC:V2500-A0-72-31-1201-00A-920A-C|Issue No:002.00|Issue Date:2015-08-01

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 72-31-12-300-007 LPC Fan Disk - Replace The Shank Nuts, Repair-007 (VRS1157)

Effectivity

01-200

5A0269

Assembly A

01-200

5A0337

Assembly A

01-200

5A1757

Assembly B

01-200

5A1948

Assembly B

Material of component

DESCRIPTION

SYMBOL

MATERIAL

Stage 1 fan disk

-

Titanium alloy

Shank nut

-

Corrosion resistant steel

General

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

Price and availability - not applicable

NOTE

To identify the consumable materials refer to PCI

NOTE

Special tools are identified in the procedure by the tool primary number.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Drilling machineLOCALDrilling machine

Radial

Fluorescent Penetrant Inspection EquipmentLOCALFluorescent penetrant inspection equipment
IAE 3J12712 Peening tools0AM53IAE 3J127121

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-020 WATERPROOF SILICON CARBIDELOCALCoMat 05-020
CoMat 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY)LOCALCoMat 06-022

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
Self locking shank nutAS27870A/R

(For Assembly A,B)

Self locking shank nutAS27870A/R

(For Assembly A,B)

Self locking shank nutAS55202-2A/R

(For Assembly B)

Self locking shank nutAS55202-5A/R

(For Assembly B)

Self locking shank nutAS55202-8A/R

(For Assembly B)

Self locking shank nutAS55202-2A/R

(For Assembly B)

Self locking shank nutAS55202-5A/R

(For Assembly B)

Self locking shank nutAS55202-8A/R

(For Assembly B)

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-31-12-350-056 Remove the Damaged Shank Nuts of the Stage 1 Fan Disk Assembly

    1. CAUTION

      WHEELS, STONES AND ABRASIVE PAPERS USED TO DRESS, MAKE SMOOTH OR POLISH A TITANIUM COMPONENT MUST BE OF THE SILICON CARBIDE TYPE. ALUMINUM OXIDE TYPES MUST NOT BE USED.

      CAUTION

      IF MECHANICAL CUTTERS ARE USED, ONLY SMALL CUTS MUST BE MADE TO PREVENT TOO MUCH HEAT.

      Refer to Figure.

    2. Examine and identify the damaged shank nuts.

    3. Write down the part number and location of damaged shank nuts.

      4. Remove the damaged shank nut.

        1. With the use of a radial Drilling machine, drill the flare of the shank nut until the flare twists.

        1. Use a 0.378 in. (9.60 mm) drill.

        2. Take care not to damage the flange bore or face.

        3. Refer to the SPM TASK 70-35-11-300-501.

      5. Remove sharp edges around the nut location hole.

    6. Clean the hole with a soft clean cloth and blast with air.

    2. SUBTASK 72-31-12-230-056 Examine the Flange Nut Location Hole of the Stage 1 Fan Disk Assembly

    3. SUBTASK 72-31-12-220-071 Examine the Flange of the Stage 1 Fan Disk Assembly

      1. Visually inspect the nut location hole.

      1. Nicks, scratches and burrs are not permitted.

    4. SUBTASK 72-31-12-350-057 Fit a New Shank Nut to the Stage 1 Fan Disk Assembly

    1. Refer to Figure

    2. Prepare the new shank nut which has same part number as identified for each location hole in Step, step 4 (A), (B).

      3. Fit a new shank nut into the flange nut location hole.

      1. Make sure the shank nut is installed correctly.

      4. Hold the shank nut in position and make a flare.

        1. Shank nut must be firmly held against the flange before the start of swaging.

        2. Care must be taken that the flange does not become damaged.

        3. During swaging, the tool may damage the silver coating inside the shank.

        4. This is permitted and it is not necessary to touch up if coating is damaged. Any loose flakes of silver coating are to be removed.

        5. Refer to the SPM TASK 70-35-11-300-501.

    5. SUBTASK 72-31-12-220-072 Examine the Shank Nut of the Stage 1 Fan Disk Assembly

    1. Refer to Figure

      2. Visually inspect the shank nut.

        1. Flare should be evenly peened.

        1. Cracks are not permitted.

        2. Circumferential movement of nut to flange is permitted but there must be no axial movement.

    6. Figure: Replace the shank nut of the stage 1 fan disk - Assembly A

    Replace the shank nut of the stage 1 fan disk - Assembly A

    Figure: Replace the shank nut of the stage 1 fan disk - Assembly B

    Replace the shank nut of the stage 1 fan disk - Assembly B

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added PN 5A1948 to the effectivity table. (89VJ755D)

Link not Found
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:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Link not Found
Link not Found
Link not Found
Link not Found
Manufacturer Code:1E1X8
Supply Number:CoMat 05-020
Type:sp01
Supply Short Name:CoMat 05-020 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-020 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/33 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 320 (ANSI B74.18)
JCR-027 (JAEC REF)
JCR-186 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
LOCAL
K6835
Manufacturer Code:X222X
Supply Number:CoMat 06-022
Type:sp01
Supply Short Name:CoMat 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY)
Supply Name:CoMat 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY)
Specification Groups:
Doc NumberType
ARDROX 985-P14 OMAT: 652 (CHEMETALL OAKITE 985-P14)It is not permitted to mix the selected CoMat 06‐022 letter suffix material with other CoMat 06‐022 letter suffix materials. Where CoMat 06‐022 is specified with no suffix, use one of the CoMat 06‐ 022 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Tool Number:Drilling machine
Tool Name:Drilling machine
Manufacturer Code:LOCAL
Tool Number:Fluorescent penetrant inspection equipment
Tool Name:Fluorescent Penetrant Inspection Equipment
Manufacturer Code:0AM53
Tool Number:IAE 3J12712
Tool Name:IAE 3J12712 Peening tools