TASK 72-41-34-300-058 HPC Stage 4 Unison Ring Connector Bridges - Blend Repair, Repair-058 (VRS6688)

DMC:V2500-A5-72-41-3434-01A-649A-C|Issue No:002.00|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

V2500-A5

Common Information

TASK 72-41-34-300-058 HPC Stage 4 Unison Ring Connector Bridges - Blend Repair, Repair-058 (VRS6688)

Effectivity

FIG/ITEM

PART NO.

04-200

6B1081

04-201

6B1082

Material of component

PART IDENT

MATERIAL

Bridging piece

Corrosion resistant steel

General

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

The HP Compressor stage 4 bridging piece, repaired to this procedure must be as near as possible to their initial shape and surface condition.

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

Price and Availability

Refer to International Aero Engines

Related Repair - 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 70-11-26-300-503
SPM TASK 70-11-39-300-503
SPM TASK 70-23-02-230-501
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
Vibro-engraving equipmentLOCALVibro-engraving equipment
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-074 ALUMINIUM OXIDE ABRASIVE PAPER06565CoMat 05-074
CoMat 05-106 ABRASIVE STONEK6835CoMat 05-106
CoMat 05-111 EMERY POLISHING PAPER06565CoMat 05-111
CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)LOCALCoMat 06-064

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-34-110-121 Chemically Clean

      1. Chemically clean.

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

        Use chemical cleaning equipment.

    2. SUBTASK 72-41-34-230-189 Do a Crack Test

      1. Do a penetrant crack test.

      1. Refer to the SPM TASK 70-23-02-230-501.

        Use penetrant crack test equipment.

        Cracks are not permitted.

    3. SUBTASK 72-41-34-350-171 Remove the Damage

    1. Refer to Figure.

      2. Remove 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 removed areas is to be 50 times the depth.

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

      4. Polished the area(s) of repair.

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

        Polish the repaired area to remove scratches and to give a surface finish the same as the adjacent material.

    4. SUBTASK 72-41-34-220-657 Examine the Repair

    1. Refer to Figure.

      2. Do a visual and dimensional inspection.

      1. Make sure the maximum depth of the repair is 0.005 in. (0.13 mm).

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

        Use workshop inspection equipment.

    5. SUBTASK 72-41-34-110-122 Do a Swab Etch

      1. Chemically clean.

      1. Refer to the SPM TASK 70-11-26-300-503.

        Use chemical cleaning equipment.

      2. Swab etch the repaired area(s).

      1. Refer to the SPM TASK 70-11-39-300-503.

    6. SUBTASK 72-41-34-230-190 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.

        Cracks are not permitted.

    7. SUBTASK 72-41-34-350-172 Identify the Repair

      1. Vibro-engrave VRS6688 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
Change Type:

Editorial correction due to conversion

Manufacturer Code:06565
Enterprise Name:SAINT-GOBAIN ABRASIVES
BU Name:SAINT-GOBAIN ABRASIVES
P.O. Box:808
City:TROY
State:NY
Zip Code:12181
Country:USA
Phone Number:1-518-266-2200
Fax Number:1-518-266-2342
Internet:www.saintgobain.com
Manufacturer Code:K6835
Enterprise Name:MED-LAB LTD
BU Name:MED-LAB LTD
Street:COPELAND ST
City:DERBY
Zip Code:DE1 2PU
Country:GREAT BRITAIN
Phone Number:44-1332-349094
Fax Number:44-1332-371237
Email:sales@med-lab.co.uk
Internet:www.med-lab.co.uk
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:44197
Supply Number:CoMat 05-074
Type:sp01
Supply Short Name:CoMat 05-074 ALUMINIUM OXIDE ABRASIVE PAPER
Supply Name:CoMat 05-074 ALUMINIUM OXIDE ABRASIVE PAPER
Specification Groups:
Doc NumberType
ANSI/CAMI GRIT SIZE 180 ALUMINIUM OXIDE ABRASIVE PAPER
Suppliers:
ManufacturerRemarks
44197
K6835
LOCAL
Manufacturer Code:K6835
Supply Number:CoMat 05-106
Type:sp01
Supply Short Name:CoMat 05-106 ABRASIVE STONE
Supply Name:CoMat 05-106 ABRASIVE STONE
Specification Groups:
Doc NumberType
(SS-S-736/2/26) (A-A-3068/2-26)SQUARE FINE SS-S-736 TYPE II CLASS A1
Suppliers:
ManufacturerRemarks
K6835
KC1D9
Manufacturer Code:44197
Supply Number:CoMat 05-111
Type:sp01
Supply Short Name:CoMat 05-111 EMERY POLISHING PAPER
Supply Name:CoMat 05-111 EMERY POLISHING PAPER
Specification Groups:
Doc NumberType
FEPA GRIT SIZE P280 OR P240 EMERY POLISHING PAPER OR ALUMINUM OXIDE ABRASIVE PAPER
Suppliers:
ManufacturerRemarks
44197
K6835
KC1D9
LOCAL
Manufacturer Code:X222X
Supply Number:CoMat 06-064
Type:sp01
Supply Short Name:CoMat 06-064FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Supply Name:CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐064 letter suffix material with other CoMat 06‐064 letter suffix materials.Where CoMat 06‐064 is specified with no suffix, use one of the CoMat 06‐064 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Tool Number:Chemical cleaning equipment
Tool Name:Chemical cleaning equipment
Manufacturer Code:LOCAL
Tool Number:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Link not Found
Manufacturer Code:LOCAL
Tool Number:Vibro-engraving equipment
Tool Name:Vibro-engraving equipment
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment