TASK 72-41-34-300-025 HPC Stage 3 Unison Ring Connector Bridges - Replace The Bushes, Repair-025 (VRS6263)

DMC:V2500-A0-72-41-3433-00A-920A-C|Issue No:002.00|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 72-41-34-300-025 HPC Stage 3 Unison Ring Connector Bridges - Replace The Bushes, Repair-025 (VRS6263)

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

The HP Compressor Stage 3 Actuating Ring Connector Assembly is manufactured from Titanium alloy. The Bush is manufactured from Polymide resin.

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/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 given below:
TASK 72-41-34-100-000
TASK 70-11-08-300-503
TASK 70-23-05-230-501

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
Portable Drilling MachineLOCALPortable Drilling Machine
DrillLOCALDrill

0.346 in (8.80 mm) diameter

Penetrant Crack Test EquipmentLOCALPenetrant crack test equipment
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)X222XCoMat 06-063

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
Bush6A25124
Bush6A25124

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-34-110-092 Chemically Clean

      1. Chemically clean.

      1. Refer to the SPM TASK 72-41-34-100-000.

        Use chemical cleaning equipment.

    2. SUBTASK 72-41-34-350-084 Remove the Worn Bushes

      CAUTION

      DO NOT DAMAGE THE HOLE IN THE CONNECTOR.

    1. Refer to: Figure and Figure

      2. Remove the head of the bush.

      1. Use a portable drilling machine with a 0.346 in (8.80 mm) diameter drill and standard workshop equipment.

      3. Remove the bush.

      1. Use a round bar and standard workshop equipment.

        NOTE

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

    3. SUBTASK 72-41-34-110-093 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 repair area(s).

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

        Use chemical cleaning equipment.

    4. SUBTASK 72-41-34-230-149 Do a Crack Test

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

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

        If cracks - Reject.

    5. SUBTASK 72-41-34-220-215 Examine

    1. Refer to: Figure and Figure

      2. Visually examine and measure the dimensions of the bush location holes.

      1. Use workshop inspection equipment.

        More than 0.3552 in (9.022 mm) - Reject.

  6. SUBTASK 72-41-34-230-087 DELETED

    7. SUBTASK 72-41-34-350-085 Install the Bushes

      CAUTION

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

    1. Refer to: Figure and Figure

      2. Install the new bushes.

      1. Use 6A2512 bush 03-220, 4 off and 6A2512 bush 03-300, 4 off.

        Use standard workshop equipment.

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

    8. SUBTASK 72-41-34-220-216 Examine

    1. Refer to: Figure and Figure

      2. Visually examine the bushes.

      1. Make sure that the bushes are fully engaged.

    9. 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)

Link not Found
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:X222X
Enterprise Name:N/A – REFER TO APPLICABLE COMAT SUFFIX
Link not Found
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
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