TASK 72-41-34-300-024 HPC Stage 3 Unison Ring Connector Bridges - Blend Repair, Repair-024 (VRS6191)

DMC:V2500-A0-72-41-3433-00A-649A-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 72-41-34-300-024 HPC Stage 3 Unison Ring Connector Bridges - Blend Repair, Repair-024 (VRS6191)

Effectivity

FIG/ITEM PART NO.

03-200

6A2523

03-200

6A7594

03-200

6A7855

03-280

6A2521

03-280

6A7593

03-280

6A7853

Material of component

PART IDENT

MATERIAL

Bridge piece

Titanium alloy

Bush

Graphite/polymide

Bush

Corrosion resistant steel

General

This repair must only be done when the instruction to do so is given in TASK 72-41-34 (INSPECTION/CHECK).

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

Use TASK 72-41-34-300-025 to replace damaged bushes.

Price and Availability - None

Related Repairs - None

NOTE

Equipment and materials necessary to do this repair are in the SPM TASKs given below:
SPM TASK 70-09-00-400-501
SPM TASK 70-11-08-300-503
SPM TASK 70-23-01-230-501
SPM TASK 70-23-05-230-501
SPM TASK 70-35-03-300-501

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Chemical Cleaning EquipmentLOCALChemical Cleaning Equipment
Penetrant Crack Test EquipmentLOCALPenetrant Crack Test Equipment
Standard Workshop EquipmentLOCALStandard Workshop Equipment
Vibrating marking pencilLOCALVibrating marking pencil
Workshop Inspection EquipmentLOCALWorkshop Inspection Equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-020 WATERPROOF SILICON CARBIDELOCALCoMat 05-020
CoMat 05-021 WATERPROOF SILICON CARBIDE44197CoMat 05-021
CoMat 05-141 ABRASIVE STONE SILICON CARBIDELOCALCoMat 05-141
CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)LOCALCoMat 06-063

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-34-110-138 Chemically Clean

      1. Chemically clean.

      1. Refer to TASK 72-41-34-100-000 (CLEANING-000).

        Use chemical cleaning equipment.

    2. SUBTASK 72-41-34-230-077 Do a Crack Test

      1. Do a penetrant crack test.

      1. Refer to the SPM TASK 70-23-01-230-501.

        Use penetrant crack test equipment.

        No cracks are permitted.

    3. SUBTASK 72-41-34-350-053 Remove the Damage

      CAUTION

      TITANIUM COMPONENT - YOU MUST USE SILICON CARBIDE TYPE ABRASIVE WHEELS, STONES AND PAPERS TO DRESS, BLEND AND POLISH THIS COMPONENT.

      CAUTION

      TITANIUM COMPONENT - DO NOT USE FORCE WITH MECHANICAL CUTTERS OR THE MATERIAL WILL BECOME TOO HOT.

      CAUTION

      TITANIUM COMPONENT - MAXIMUM SPEED FOR MECHANICAL TOOLS MUST NOT BE MORE THAN 1000 REVOLUTIONS PER MINUTE.

      CAUTION

      TITANIUM COMPONENT - YOU MUST MAKE SURE THAT WHEN YOU REMOVE MATERIAL, BLEND AND POLISH, TO MAKE SMOOTH, THAT NO SPARKS ARE PRODUCED.

      CAUTION

      TITANIUM COMPONENT - 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.

      2. Remove the area(s) of damage as necessary.

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

        The maximum depth to remove the damage must not be more than 0.005 in. (0.13 mm).

        The diameter of the repaired area is to be 50 times the depth.

        Make sure all the damage marks are fully removed.

      3. Blend the area(s) of repair.

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

        Make sure the damage marks are fully removed and the area is made smooth to the adjacent material.

      4. Polish the area(s) of repair.

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

        Polish to remove dressing marks and to give a surface finish the same as the adjacent material.

    4. SUBTASK 72-41-34-220-184 Examine the Repair

    1. Refer to Figure.

      2. Do a visual inspection.

      1. Make sure the surface finish is the same as the adjacent material.

        Use workshop inspection equipment.

      3. Do a dimensional inspection.

      1. Make sure the maximum depth of the repair is not more than 0.005 in. (0.13 mm).

        If more than 0.005 in. (0.13 mm), reject.

    5. SUBTASK 70-41-34-110-001 Do a Swab Etch

      1. Chemically clean.

      1. Refer to the SPM TASK 70-11-08-300-503, SUBTASK 70-11-08-300-001.

        Use chemical cleaning equipment.

      2. Swab etch the repaired area(s).

      1. Refer to the SPM TASK 70-11-08-300-503, SUBTASK 70-11-08-300-002.

        NOTE

        Make sure the etching solution is applied only to the actuating ring connector surface and does not contact the bushes.

    6. SUBTASK 72-41-34-230-078 Do a Crack Test

      1. Do a local penetrant crack test on the repaired area(s).

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

        Use penetrant crack test equipment.

        No cracks are permitted.

    7. SUBTASK 72-41-34-350-194 Identify the Repair

      1. Vibro-engrave VRS6191 on the part adjacent to the part number.

      1. Refer to the SPM TASK 70-09-00-400-501, SUBTASK 70-09-00-400-001.

        Use vibro engraving equipment.

    8. 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 05-020
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:LOCAL
Supply Number:CoMat 05-141
Type:sp01
Supply Short Name:CoMat 05-141 ABRASIVE STONE SILICON CARBIDE
Supply Name:CoMat 05-141 ABRASIVE STONE SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/112FJF 44 SQUARE-FINE, SS-S-736/3/21, TYPE II CLASS A2
Suppliers:
ManufacturerRemarks
LOCAL
06565
42736
A2549
IE216
IE302
K3895
K6835
Manufacturer Code:X222X
Supply Number:CoMat 06-063
Type:sp01
Supply Short Name:CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)
Supply Name:CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐063 letter suffix material with other CoMat 06‐063 letter suffix materials. Where CoMat 06‐063 is specified with no suffix, use one of the CoMat 06‐063 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Link not Found
Link not Found
Manufacturer Code:LOCAL
Tool Number:Standard Workshop Equipment
Tool Name:Standard Workshop Equipment
Link not Found
Link not Found