TASK 72-32-23-300-015 HPC Front Shaft Assembly - Repair Damaged Threads By Material Removal, Repair-015 (VRS1991)

DMC:V2500-A0-72-32-2302-03A-649A-C|Issue No:001.00|Issue Date:2014-05-01

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 72-32-23-300-015 HPC Front Shaft Assembly - Repair Damaged Threads By Material Removal, Repair-015 (VRS1991)

Effectivity

FIG/ITEM

PART NO.

01-745

6A2914

01-745

6A2940

01-745

6A3888

01-745

6A3899

01-745

6A4147

01-745

6A8083

01-745

6A8094

Material of component

PART IDENT

IAE SYMBOL

MATERIAL

HP Compressor Front Stubshaft

TEG

Titanium aluminum vanadium alloy

General

This repair can only be done one time on incomplete thread of inner thread (Area 1). Refer to Figure. When incomplete thread is removed to this repair, a code letter A is put following the repair identification mark.

Price and availability - none

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

NOTE

Equivalent materials or equipment can be used.

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Standard workshop equipmentLOCALStandard workshop equipment
Portablegrinding equipmentLOCALPortable grinding equipment
Penetrant Crack Test EquipmentLOCALPenetrant crack test equipment
Workshop inspection equipmentLOCALWorkshop inspection equipment
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-019 WATERPROOF SILICON CARBIDELOCALCoMat 05-019
CoMat 05-020 WATERPROOF SILICON CARBIDELOCALCoMat 05-020
CoMat 05-021 WATERPROOF SILICON CARBIDE44197CoMat 05-021
CoMat 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY)LOCALCoMat 06-022

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-23-350-013 Remove the Damage from the Thread

      CAUTION

      1. TITANIUM COMPONENT - SILICON CARBIDE TYPE WHEELS, STONES AND ABRASIVE PAPERS ARE TO BE USED FOR THIS REPAIR.

      CAUTION

      2. TITANIUM COMPONENT - ALUMINUM OXIDE MUST NOT BE USED.

      CAUTION

      3. TITANIUM COMPONENT - THE MATERIAL WILL OXIDIZE AND CRACK IF MECHANICAL CUTTERS ARE USED HEAVILY. IF THE MATERIAL SHOWS A CHANGE IN COLOR, TO DARKER THAN A LIGHT STRAW COLOR, THE COMPONENT IS TO BE REJECTED.

    1. Refer to Figure and Figure.

    2. Visually examine the shaft to make sure that removal of incomplete thread has not been done before.

    3. Look for the repair identification mark.

    4. If the mark with "VRS1991 A" is found, Step must not be applied to the shaft.

    5. Area 1 cannot be repaired again.

    6. Repair the damages on incomplete thread - Area 1.

      7. Remove thread over an arc of 90 degrees from beginning of the thread completely.

      1. Use Portablegrinding equipment or abrasive stone.

      2. The end of the repaired area must be smoothly continuous.

      3. Refer to the SPM TASK 70-35-03-300-501.

    8. Repair the damages on remaining threads except the incomplete thread - Area 2 and 3.

    9. Make smooth and/or hand polish to remove thread pick up, sharp edges and high metals on threads.

    2. SUBTASK 72-32-23-350-014 Polish the Repaired Area

      CAUTION

      1. TITANIUM COMPONENT - SILICON CARBIDE TYPE WHEELS, STONES AND ABRASIVE PAPERS ARE TO BE USED FOR THIS REPAIR.

      CAUTION

      2. TITANIUM COMPONENT - ALUMINUM OXIDE MUST NOT BE USED.

      CAUTION

      3. TITANIUM COMPONENT - THE MATERIAL WILL OXIDIZE AND CRACK IF MECHANICAL CUTTERS ARE USED HEAVILY. IF THE MATERIAL SHOWS A CHANGE IN COLOR, TO DARKER THAN A LIGHT STRAW COLOR, THE COMPONENT IS TO BE REJECTED.

    1. Refer to Figure and Figure.

    2. Polish the repaired area.

      1. Surface finish of the repair must be the same as the adjacent area.

      2. Refer to the SPM TASK 70-35-03-300-501.

    3. SUBTASK 72-32-23-220-119 Examine the Repair

      1. Visually examine the repaired area.

      1. Visually examine the repaired area for nicks, dents, galls, chips, scores and/or scratches using 10X magnifying glass.

    4. SUBTASK 72-32-23-230-082 Do a Crack Test

      1. Do a local penetrant crack test.

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

      3. Cracks are not permitted.

    5. SUBTASK 72-32-23-350-015 Identify the Repair

    1. Refer to Figure.

    2. Make a mark VRS1991 adjacent to the part number.

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

    5. If incomplete thread is removed in Step put a code letter A following the mark VRS1991.

    6. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:44197
Enterprise Name:SAINT-GOBAIN INDUSTRIAL CERAMICS INC.
BU Name:SAINT-GOBAIN ABRASIVES, INC
Street:ONE NEW BOND STREET
P.O. Box:PO BOX 15008
City:WORCESTER
State:MA
Zip Code:01615-0008
Country:USA
Phone Number:1-508-795-5000
Fax Number:1-508-795-2828
Internet:www.saint-gobain-northamerica.com
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:1E1X8
Supply Number:CoMat 05-019
Type:sp01
Supply Short Name:CoMat 05-019 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-019 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/31 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 400 (ANSI B74.18)
JCR-184 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
LOCAL
K6835
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:1E1X8
Supply Number:CoMat 05-021
Type:sp01
Supply Short Name:CoMat 05-021 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-021 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/35 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 240 (ANSI B74.18 )
JCR-188 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
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:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Manufacturer Code:LOCAL
Tool Number:Portable grinding equipment
Tool Name:Portablegrinding equipment
Link not Found
Link not Found
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment