TASK 72-41-33-300-018 HPC Variable Stator Vane Shrouds - Repair Worn/Damaged Bushing Hole(s) With Oversize Bushing(es), Repair-018 (VRS6631)

DMC:V2500-A0-72-41-3310-00A-720A-B|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 72-41-33-300-018 HPC Variable Stator Vane Shrouds - Repair Worn/Damaged Bushing Hole(s) With Oversize Bushing(es), Repair-018 (VRS6631)

Effectivity

FIG/ITEM

PART NO.

01-200

6A3464

02-200

6A3467

03-200

6A3469

04-200

6A3471

Material of component

PART IDENT

SYMBOL

MATERIAL

HP compressor VIGV inner shroud ring assembly

LJH

Aluminum alloy

HP compressor stage 3 inner

shroud ring assembly

LJH

Aluminum alloy

HP compressor stage 4 inner

shroud ring assembly

LJH

Aluminum alloy

HP compressor stage 5 inner

shroud ring assembly

EAE or EAK or EBL

Corrosion resistant steel

General

This repair must only be done when instruction to do so is given in 72-41-33 Inspection/Check.

This repair allows worn/damaged bush location hole(s) in the HP compressor VIGV, stage 3, 4 and 5 inner shroud ring assemblies, be repaired by the installation of oversize bush(es).

The practices and processes referred to in the procedures by the TASK/SUBTASK numbers are in the SPM.

Price and availability

Refer to International Aero Engines

Related repairs - none

NOTE

Equipment and materials necessary to do this Repair are in the SPM TASKS below:
SPM TASK 70-09-00-400-501
SPM TASK 70-11-03-300-503
SPM TASK 70-23-02-230-501
SPM TASK 70-38-02-300-503

NOTE

To identify the consumable materials, refer to the PCI.

NOTE

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Chemical cleaning equipmentLOCALChemical cleaning equipment
Dial indicatorLOCALDial indicator
Penetrant Crack Test EquipmentLOCALPenetrant crack test equipment
Standard workshop equipmentLOCALStandard workshop equipment
Vertical boring machineLOCALVertical boring machine
Vibrating marking pencilLOCALVibrating marking pencil
IAE 3R19392 Machine fixture, HP compressor stage 3 inner shroud ring assy0AM53IAE 3R193921
IAE 3R19393 Machine fixture, HP compressor stage 4 inner shroud ring assy0AM53IAE 3R193931
IAE 3R19394 Machine fixture, HP compressor stage 5 inner shroud ring assy0AM53IAE 3R193941
IAE 3R19388 Machine fixture, HP compressor IG inner shroud ring assy0AM53IAE 3R193881
IAE 3R19392 Machine fixture, HP compressor stage 3 inner shroud ring assy0AM53IAE 3R19392

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-106 ABRASIVE STONEK6835CoMat 05-106
CoMat 05-110 EMERY POLISHING PAPER0AM53CoMat 05-110
CoMat 05-111 EMERY POLISHING PAPER06565CoMat 05-111

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
Vespel material bush6A3497A/R

(es) (standard)

Vespel material bush6A7541

(es)

Vespel material bush6A7452

(es)

Vespel material bush6A3497A/R

(es) (standard)

Vespel material bush6A7541

(es)

Vespel material bush6A7542

(es)

Vespel material bush6A3497A/R

(es) (standard)

Vespel material bush6A7541

(es)

Vespel material bush6A7542

(es)

Vespel material bush6A3497A/R

(es) (standard)

Vespel material bush6A7541

(es)

Vespel material bush6A7542

(es)

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-33-220-131 Examine the HP Compressor Inner Shroud Ring Assemblies

    1. Refer to Figure, Figure, Figure, Figure and Figure.

    2. CAUTION

      MAKE SURE YOU KEEP THE INNER SHROUD RING ASSEMBLIES, TOGETHER AS A MATCHED SET.

      Visually examine and measure the dimensions of the HP Compressor VIGV, Stage 3, 4 and 5 Inner Shroud Ring Assemblies to determine if they can be repaired.

      3. Airswept surface wear.

      1. Maximum limit of wear is 0.012in.(0.3048 mm).

      4. Counterbore bush location wear.

      1. Maximum limit of wear is 0.025in. (0.635 mm).

    2. SUBTASK 72-41-33-350-077 Remove Damage from the HP Compressor VIGV, Stage 3, 4 and 5 Inner Shroud Ring Assemblies

    1. Refer to Figure, Figure, Figure, Figure and Figure.

      2. Remove, high spots and burrs, from the HP Compressor VIGV, Stage 3, 4 and 5 Inner Shroud Ring Assemblies, airswept surfaces and counterbore bush location holes.

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

        Blend wear/damage to depth and make sure the repair area is made smooth with adjacent material and there are no scratches.

        Do not remove more material than is necessary.

        The maximum depth of material removal on the airswept surface is 0.012in. (0.3048 mm) and the countebore bush location hole(s) 0.025in. (0.635 mm).

        Use standard workshop equipment.

      3. Polish the repair area.

      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.

    3. SUBTASK 72-41-33-110-058 Chemically Clean

      1. Chemically clean the HP Compressor VIGV, Stage 3, 4 and 5 Inner Shroud Ring Assemblies.

      1. Refer to the SPM TASK 70-11-03-300-503.

        Use chemical cleaning equipment.

    4. SUBTASK 72-41-33-320-051 Machine Worn/Damaged Bush Location holes, in the HP Compressor VIGV, Stage 3, 4 and 5 Inner Shroud Ring Assemblies

      CAUTION

      MAKE SURE YOU KEEP THE INNER SHROUD RING ASSEMBLIES, TOGETHER AS A MATCHED SET.

    1. Refer to Figure, Figure, Figure, Figure and Figure.

      2. Set up the HP compressor VIGV, stage 3, 4 and/or stage 5 inner shroud ring assemblies in the machine.

    3. Machine the bush location holes, oversize as necessary.

      4. HP compressor VIGV inner shroud ring assembly.

      1. Refer to Figure.

        Machine diameter AR oversize, as necessary.

        Use a vertical boring machine.

        Use standard workshop equipment.

      5. HP compressor stage 3 inner shroud ring assembly.

      1. Refer to Figure.

        Machine diameter AE oversize, as necessary.

        Use a vertical boring machine.

        Use standard workshop equipment.

      6. HP compressor stage 4 inner shroud ring assembly.

      1. Refer to Figure.

        Machine diameter AJ oversize, as necessary.

        Use a vertical boring machine.

        Use standard workshop equipment.

      7. HP compressor stage 5 inner shroud ring assembly.

      1. Refer to Figure.

        Machine diameter AN oversize, as necessary.

        Use a vertical boring machine.

        Use standard workshop equipment.

      8. Remove the burrs.

      1. Use standard workshop equipment.

    5. SUBTASK 72-41-33-110-059 Chemically Clean

      1. Chemically clean the HP Compressor VIGV, Stage 3, 4 and 5 Inner Shroud Ring Assemblies.

      1. Refer to the SPM TASK 70-11-03-300-503 .

        Use chemical cleaning equipment.

    6. SUBTASK 72-41-33-230-074 Do a Crack Test

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

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

        Use penetrant crack test equipment.

        Cracks are not permitted.

    7. SUBTASK 72-41-33-220-132 Examine the HP Compressor Inner Shroud Ring Assemblies

    1. Refer to Figure, Figure, Figure, Figure and Figure.

    2. CAUTION

      MAKE SURE YOU KEEP THE INNER SHROUD RING ASSEMBLIES, TOGETHER AS A MATCHED SET.

      Visually examine and measure the dimensions of the HP. Compressor VIGV, Stage 3, 4 and 5 VSV Inner Shroud Ring Assemblies.

      3. Airswept surface(s) maximum limit 0.012in. (0.3048 mm).

      1. Accept.

      4. More than the limit in (1) above.

      1. Reject.

      5. Countersunk bush location(s) maximum limit 0.025 in. (0.635 mm).

      1. Accept.

      6. More than the limit (3) above.

      1. Reject.

      7. Bush location(s).

      1. Make sure the bush location(s) bore is to the given limits for each oversize, as necessary.

    8. SUBTASK 72-41-33-350-078 Identify the Repair

      1. CAUTION

        MAKE SURE YOU KEEP THE INNER SHROUD RING ASSEMBLIES, TOGETHER AS A MATCHED SET.

        Make a mark VRS6631 adjacent to part number.

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

        Use vibro-engraving equipment.

    9. SUBTASK 72-41-33-380-059 Apply Surface Protection

      1. Chemically touch-up the repaired surface(s) of the HP. Compressor VIGV, Stage 3 and 4 VSV Inner Shroud Assemblies.

      1. Refer to the SPM TASK 70-38-02-300-503.

    10. SUBTASK 72-41-33-350-079 Install Oversize Bush(es)

    1. Install standard or oversize bush(es), by selective assembly, as necessary.

      2. HP Compressor VIGV Inner Shroud Ring Assembly.

      1. Use 01-190 6A3497 Vespel material bush(es) (standard), 01-191 6A7451 Vespel material bush(es), (0.010 in (0.254 mm) oversize), 01-192 6A7542 Vespel material bush(es), (0.020 in) (0.508 mm) oversize), as necessary.

      3. HP Compressor Stage 3 Inner Shroud Ring Assembly.

      1. Use 02-190 6A3497 Vespel material bush(es) (standard), 02-191 6A7451 Vespel material bush(es), (0.010 in (0.254 mm) oversize), 02-192 6A7542 Vespel material bush(es), (0.020 in) (0.508 mm) oversize), as necessary.

      4. HP Compressor Stage 4 Inner Shroud Ring Assembly.

      1. Use 03-190 6A3497 Vespel material bush(es) (standard), 03-191 6A7451 Vespel material bush(es), (0.010 in (0.254 mm) oversize), 03-192 6A7542 Vespel material bush(es), (0.020 in) (0.508 mm) oversize), as necessary.

      5. HP Compressor Stage 5 Inner Shroud Ring Assembly.

      1. Use 04-190 6A3497 Vespel material bush(es) (standard), 04-191 6A7451 Vespel material bush(es), (0.010 in (0.254 mm) oversize), 04-192 6A7542 Vespel material bush(es), (0.020 in) (0.508 mm) oversize), as necessary.

    11. Figure: Repair details and dimensions

    Repair details and dimensions

    Figure: Repair details and dimensions

    Repair details and dimensions

    Figure: Repair details and dimensions

    Repair details and dimensions

    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
Link not Found
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: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: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
Link not Found
Link not Found
Link not Found
Link not Found
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:X111X
Supply Number:CoMat 05-110
Type:sp01
Supply Short Name:CoMat 05-110 EMERY POLISHING PAPER
Supply Name:CoMat 05-110 EMERY POLISHING PAPER
Specification Groups:
Doc NumberType
DISCONTINUED
Suppliers:
ManufacturerRemarks
X111X
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:LOCAL
Tool Number:Chemical cleaning equipment
Tool Name:Chemical cleaning equipment
Manufacturer Code:LOCAL
Tool Number:Dial indicator
Tool Name:Dial indicator
Manufacturer Code:0AM53
Tool Number:IAE 3R19388
Tool Name:IAE 3R19388 Machine fixture, HP compressor IG inner shroud ring assy
Manufacturer Code:0AM53
Tool Number:IAE 3R19392
Tool Name:IAE 3R19392 Machine fixture, HP compressor stage 3 inner shroud ring assy
Manufacturer Code:0AM53
Tool Number:IAE 3R19393
Tool Name:IAE 3R19393 Machine fixture, HP compressor stage 4 inner shroud ring assy
Manufacturer Code:0AM53
Tool Number:IAE 3R19394
Tool Name:IAE 3R19394 Machine fixture, HP compressor stage 5 inner shroud ring assy
Manufacturer Code:LOCAL
Tool Number:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Link not Found
Manufacturer Code:LOCAL
Tool Number:Vertical boring machine
Tool Name:Vertical boring machine
Link not Found