TASK 72-41-14-300-004 HPC Rear Rotating Air Seal - Blend Repair On The Seal Fins, Repair-004 (VRS6147)

DMC:V2500-A0-72-41-1400-01A-649A-C|Issue No:002.00|Issue Date:2016-11-01

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 72-41-14-300-004 HPC Rear Rotating Air Seal - Blend Repair On The Seal Fins, Repair-004 (VRS6147)

Effectivity

FIG/ITEM

PART NO.

ASSEMBLY

01-800

6A3305

A

01-800

6A4113

A

01-800

6A4392

B

01-800

6A5869

B

Material of component

RR

DESCRIPTION

SYMBOL

MATERIAL

HP Compressor Rear Rotating Air Seal

QDY

Waspalloy

General

This TASK gives the procedure to Repair the Seal Fins on the HP Compressor Rear Rotating Air Seal by dressing and scalloping.

This repair must only be done when the instruction to do so is given in the relevant inspection procedures (identified by the applicable part number) located in section 72-41-14.

This repair scheme is for a CRITICAL PART. Critical parts comprise those major rotating parts of an engine the failure of which could, if uncontained, affect the airworthiness of the aircraft. The unauthorised repair of critical parts can have hazardous consequences. Critical parts must be handled with care at all times.

Where reference is made to a SUBTASK within a TASK in the form "TASK, SUBTASK" the operator must read and apply the complete TASK. The SUBTASK is listed only when the TASK gives options for the processing of the component. The specified SUBTASK instructs what option must be used during application of the TASK for the successful completion of the Repair Scheme VRS6147.

TASKS identified by SPM TASK are in the Standard Practices Manual (SPM).

Price and availability

Refer to International Aero Engines

Related repairs - HP Compressor rear rotating seal - repair by re-balancing to TASK 72-41-14-300-006 (VRS6042)

NOTE

  1. Equivalent materials or equipment can be used.

  2. More equipment and materials necessary to do this Repair are in the SPM TASKS given below:

SPM TASK 70-09-00-400-501
SPM TASK 70-23-04-230-501
SPM TASK 70-35-03-300-501

NOTE

It is possible that some materials in the consumable materials chart cannot be used for some or all of the necessary applications. Before you use the materials, make sure the types, quantities and applications of the materials necessary are legally permitted in your location. All persons must obey all applicable federal, state, local and provincial laws and regulations when it is necessary to work with these materials.

NOTE

To identify the consumable materials refer to the Overhaul Process and Consumables Index (PCI).

NOTE

Other necessary consumable materials are referred to in the SPM TASKS in this TASK.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Hand grinderLOCALHand grinder
Fluorescent Penetrant Inspection EquipmentLOCALFluorescent penetrant inspection equipment
Dimensional inspection equipmentLOCALDimensional inspection equipment
Chemical cleaning equipmentLOCALChemical cleaning equipment
Vibro-peen equipmentLOCALVibro-peen 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 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY)LOCALCoMat 06-022

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-14-350-058 Remove Damaged Area(s)

    1. CAUTION

      DRESS WHERE POSSIBLE IN A CIRCULAR MOTION.

      CAUTION

      DO NOT USE POWER TOOL OR HAND HELD POWER TOOLS TO DRESS THE HP COMPRESSOR REAR ROTATING AIR SEAL.

      CAUTION

      MAKE SURE ALL BURRS CREATED BY THE REPAIR PROCESS ARE REMOVED.

      Refer to Figure, Figure, Figure and Figure.

      2. Remove area(s) of damage.

      1. Remove sufficient material to remove damage. Refer to the limits given in Step.

      2. Do not grind into the seal fin land.

      3. Use a suitable abrasive paper or stone to remove the damage.

      3. Limits - Figure and Figure.

      1. Areas of fin on the multi-fin seal can be removed up to a maximum limit of 30 degrees on any one fin. Only one fin can be dressed to remove material to the maximum limit. Material can be removed from the other fins where necessary when the side ACxAB removed from each fin is not more than 0.015 sq-inch (0.096 sq-cm).

      2. Material can be removed from the three fins when the side area ACxAB removed from each fin is not more than 0.015 sq-inch (0.096 sq-cm).

      3. Material must be removed smoothly to keep the seal contour near to the initial shape.

      4. Deburr.

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

      3. Make sure marks are fully removed.

      5. Blend and polish.

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

      3. Polish to get a surface finish the same as the adjacent material.

    2. SUBTASK 72-41-14-220-073 Examine the Repair(s)

      Refer to Figure, Figure, Figure and Figure.

      1. Examine the repaired dimension.

      2. Examine the repaired surface.

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

    3. SUBTASK 72-41-14-230-057 Fluorescent Penetrant Inspect

      1. Inspect for cracking using fluorescent penetrant inspection.

      1. Refer to SPM TASK 70-23-01-230-501.

      3. Cracks are not permitted.

          1. If cracking is detected.

          1. Reject.

          2. If no cracking is detected.

          1. Continue with the repair.

    4. SUBTASK 72-41-14-350-059 Identify the Component

    1. Refer to Figure and Figure.

      2. Make a mark VRS6147 adjacent to the assembly number.

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

      3. Remove raised material and burrs from the vibro-peen process.

      2. Polish to get a surface finish the same as the adjacent material.

    5. SUBTASK 72-41-14-350-060 Balance the Seal

    1. Deleted.

    6. Figure: HP Compressor Rear Rotating Air Seal - Repair Details and Dimensions - Assembly A

    HP Compressor Rear Rotating Air Seal - Repair Details and Dimensions - Assembly A

    Figure: HP Compressor Rear Rotating Air Seal - Repair Details and Dimensions - All Assemblies

    HP Compressor Rear Rotating Air Seal - Repair Details and Dimensions - All Assemblies

    Figure: HP Compressor Rear Rotating Air Seal - Repair Details and Dimensions - All Assemblies

    HP Compressor Rear Rotating Air Seal - Repair Details and Dimensions - All Assemblies

    Figure: HP Compressor Rear Rotating Air Seal - Repair Details and Dimensions - Assembly B

    HP Compressor Rear Rotating Air Seal - Repair Details and Dimensions - Assembly B

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the effectivity table and full procedure. (92VR733A)

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 06-022
Type:sp01
Supply Short Name:CoMat 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY)
Supply Name:CoMat 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY)
Specification Groups:
Doc NumberType
ARDROX 985-P14 OMAT: 652 (CHEMETALL OAKITE 985-P14)It is not permitted to mix the selected CoMat 06‐022 letter suffix material with other CoMat 06‐022 letter suffix materials. Where CoMat 06‐022 is specified with no suffix, use one of the CoMat 06‐ 022 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Tool Number:Chemical cleaning equipment
Tool Name:Chemical cleaning equipment
Manufacturer Code:LOCAL
Tool Number:Dimensional inspection equipment
Tool Name:Dimensional inspection equipment
Manufacturer Code:LOCAL
Tool Number:Fluorescent penetrant inspection equipment
Tool Name:Fluorescent Penetrant Inspection Equipment
Link not Found
Manufacturer Code:LOCAL
Tool Number:Vibro-peen equipment
Tool Name:Vibro-peen equipment