TASK 72-41-34-300-026 HPC Stage 4 Unison Ring Connector Bridges - Replace The Bushes, Repair-026 (VRS6264)

DMC:V2500-A0-72-41-3434-00A-920A-C|Issue No:003.00|Issue Date:2021-02-01

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 72-41-34-300-026 HPC Stage 4 Unison Ring Connector Bridges - Replace The Bushes, Repair-026 (VRS6264)

Effectivity

FIG/ITEM

PART NO.

ASSEMBLY

04-200

6A2528

A

04-200

6A4340

A

04-200

6A7540

A

04-200

6A7603

A

04-200

6A7858

A

04-200

6A7866

A

04-200

6A7893

B

04-200

6A8079

B

04-200

6A8123

B

Material of component

The HP Compressor VIGV Actuating Ring Assembly is manufactured from Titanium alloy.

The bush is manufactured from graphite filled polymide resin.

General

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

The practices and processes referred to in the procedure by the TASK/SUBTASK numbers are given 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 given below:
SPM TASK 70-09-00-400-501, Procedures to Make Identification
SPM TASK 70-11-26-300-503, Locally degrease
SPM TASK 70-23-02-230-501, Fluorescent Penetrant Inspection

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
Portable Drilling MachineLOCALPortable Drilling Machine
DrillLOCALDrill

0.31 in. (7.8 mm) diameter

Standard Workshop EquipmentLOCALStandard Workshop Equipment
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)X222XCoMat 06-064

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
BUSHING0AM53UP10815AR
BUSHING - SLEEVE0AM53UP12206AR

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-34-110-077 Chemically Clean

      1. Chemically clean.

      1. Use chemical cleaning equipment.

    2. SUBTASK 72-41-34-230-104 Do a Crack Test

      1. Do a crack test.

      1. Use penetrant crack test equipment.

    3. SUBTASK 72-41-34-350-096-A00 Remove Worn, Loose or Damaged Bushes, Assembly A and Assembly B

      CAUTION

      DO NOT DAMAGE THE BUSH LOCATION HOLE IN THE CONNECTOR/BRIDGE PIECE.

    1. Refer to Figure and Figure.

      2. Remove the head of the bush.

      1. Use a portable drilling machine with a 0.31 in. (7.8 mm) diameter drill.

        Drill the head of the bush until the head is released.

      3. Remove the bush.

      1. Use a round aluminiun bar to drift out remains of bush.

        Avoid damage to the hole.

        NOTE

        Pushing the bushing from the hole using a round bar, and on its own is sufficient to remove the bushings when needed.

      4. Remove sharp edges around the hole.

      1. Use standard workshop equipment.

    4. SUBTASK 72-41-34-110-109 Clean the Location Holes, Assembly A and Assembly B

    1. Refer to Figure and Figure.

      2. Clean the bush location holes in the connector.

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

        Locally degrease to clean the holes and dry using soft clean cloth and air blast.

        Remove all debris.

    5. SUBTASK 72-41-34-220-230-A00 Examine the Bush Location Holes, Assembly A and Assembly B

    1. Refer to Figure and Figure.

      2. Visually examine and measure 8 off bush location holes.

      1. Examine for damage to the connection/bridge piece assembly.

        Examine the bush location hole diameters and reject if location diameter is more than the specified, or damaged.

    6. SUBTASK 72-41-34-230-093 Do a Crack Test

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

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

        Cracks are not permitted.

    7. SUBTASK 72-41-34-350-097-A00 Install the Bushes, Assembly A

      CAUTION

      MAKE SURE THAT THE BUSHES ARE INSTALLED AT THE CORRECT LOCATION.

    1. Refer to Figure, Figure and Figure.

      2. Install the new bushes.

      1. Use UP10815 bush at 8 off locations.

        Push the bush into the hole until the bush retaining feature is engaged.

        Use standard workshop equipment.

    8. SUBTASK 72-41-34-350-097-B00 Install the Bushes, Assembly B

      CAUTION

      MAKE SURE THAT THE BUSHES ARE INSTALLED AT THE CORRECT LOCATION.

    1. Refer to Figure, Figure and Figure.

      2. Install the new bushes.

      1. Use 4 off UP12206 bush.

        Press fit the bush into the hole, in the direction illustrated, until the bush head is correctly installed.

        Use standard workshop equipment.

    9. SUBTASK 72-41-34-350-148 Examine the Bush Location, Assembly A and Assembly B

    1. Refer Figure, Figure, Figure and Figure.

      2. Examine the installation of the bushes.

      1. Make sure all the bushes are correctly installed.

        Use standard workshop equipment.

    10. SUBTASK 72-41-34-350-149 Identify the Repair

      1. Mark VRS6264 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.

    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

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added note. (20VG108)

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
Manufacturer Code:X222X
Enterprise Name:N/A – REFER TO APPLICABLE COMAT SUFFIX
Part Number:UP10815
Part Name:BUSHING
Manufacturer Code:0AM53
Part Number:UP12206
Part Name:BUSHING - SLEEVE
Manufacturer Code:0AM53
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:Drill
Tool Name:Drill
Manufacturer Code:LOCAL
Tool Number:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Manufacturer Code:LOCAL
Tool Number:Portable Drilling Machine
Tool Name:Portable Drilling Machine
Manufacturer Code:LOCAL
Tool Number:Standard Workshop Equipment
Tool Name:Standard Workshop Equipment
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment