TASK 72-41-34-300-027 HPC Stage 5 Unison Ring Connector Bridges - Replace The Bushes, Repair-027 (VRS6202)

DMC:V2500-A0-72-41-3435-00A-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 72-41-34-300-027 HPC Stage 5 Unison Ring Connector Bridges - Replace The Bushes, Repair-027 (VRS6202)

Effectivity

FIG/ITEM

PART NUMBER

ASSEMBLY

05-200

6A2534

A

05-200

6A4333

A

05-200

6A7539

A

05-200

6A7611

A

05-200

6A7860

A

05-200

6A7869

A

05-200

6A7898

B

05-200

6A8080

B

05-200

6A8124

B

Material of component

DESCRIPTION

MATERIAL

HP Compressor stage 5

actuating ring connector

assembly

Titanium alloy

Bush

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 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
SPM TASK 70-11-08-300-503
SPM TASK 70-11-26-300-503
SPM TASK 70-23-05-230-501

NOTE

To identify the consumable material, refer to 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

Workshop inspection equipmentLOCALWorkshop inspection equipment
Air blast equipmentLOCALAir blast equipment
Vibro-engraving equipmentLOCALVibro-engraving equipment

Consumables, Materials and Expendables

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

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
PART IDENTPART NUMBER
BUSHUP10815
BUSHUP12206

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-34-350-074 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.

      2. Remove the head of the bush.

      1. Use a portable drilling machine with a 0.31 in. (7.8 mm) diameter drill, to drill head of bush until the head is released.

      3. Remove the bush.

      1. Use a round aluminium bar to drift out remains of bush. Prevent damage to 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 hole.

      1. Use standard workshop equipment.

    2. SUBTASK 72-41-34-110-124 Clean Location Holes, Assembly A and Assembly B

    1. Refer to Figure and Figure.

      2. Clean bush location holes in connector.

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

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

        Remove all unwanted material.

    3. SUBTASK 72-41-34-220-659 Examine the Bush Location Holes, Assembly A and Assembly B

    1. Refer to Figure and Figure.

      2. Visually examine and measure 2 sets of 6 off bush location holes.

      1. If the bush location hole diameter is more than specified or if holes are damaged, reject it.

    4. SUBTASK 72-41-34-110-076 Do a Swab Etch

    1. Refer to Figure and Figure.

      2. Chemically clean.

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

        Use chemical cleaning equipment.

      3. Swab etch the repaired areas.

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

        Use chemical cleaning equipment.

    5. SUBTASK 72-41-34-230-164 Do a Crack Test

    1. Refer to Figure and Figure.

      2. Do a local penetrant crack test on the repaired areas.

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

        Cracks are not permitted.

    6. SUBTASK 72-41-34-350-075-A00 Install the Bushes, Assembly A

    1. Refer to Figure, Figure and Figure.

      2. Install new bushes.

      1. Use UP10815 bush at 2 sets of 6 off locations.

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

        Use standard workshop equipment.

    7. SUBTASK 72-41-34-350-075-B00 Install the Bushes, Assembly B

    1. Refer to Figure, Figure and Figure.

      2. Install new bushes.

      1. Use UP12206 bush 6 off.

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

        Use standard workshop equipment.

    8. SUBTASK 72-41-34-220-260 Examine the Bush Location, Assembly A and Assembly B

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

      2. Examine the installation of the bushes.

      1. Make sure that all the bushes are correctly fitted and correctly located.

        Use standard workshop equipment.

    9. SUBTASK 72-41-34-350-178 Identify the Repair

      1. Mark VRS6202 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.

    10. Figure: Repair Details and Dimensions - Assembly A and Assembly B

    Sheet 1

    Legend
    Repair Details and Dimensions - Assembly A and Assembly B

    Sheet 1

    Close

    Figure: Repair Details and Dimensions - Assembly A and Assembly B

    Sheet 2

    Legend
    Repair Details and Dimensions - Assembly A and Assembly B

    Sheet 2

    Close

    Figure: Repair Details and Dimensions - Assembly A

    Repair Details and Dimensions - Assembly A

    Figure: Repair Details and Dimensions - Assembly B

    Repair Details and Dimensions - Assembly B

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
Link not Found
Link not Found
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:Air blast equipment
Tool Name:Air blast equipment
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:Vibro-engraving equipment
Tool Name:Vibro-engraving equipment
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment