TASK 72-32-83-300-029 LPC Mid Case - Replace The Abradable Rubber, Repair-029 (VRS1585)

DMC:V2500-A0-72-32-8335-01A-920A-C|Issue No:003.00|Issue Date:2020-05-01

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 72-32-83-300-029 LPC Mid Case - Replace The Abradable Rubber, Repair-029 (VRS1585)

Effectivity

FIG/ITEM

PART NO.

02-650

5W2198

Material of component

PART IDENT

SYMBOL

MATERIAL

LPC mid case assembly

-

2.2AI-1.5Mg-1.1Ni-1.1Fe Aluminum

General

Price and availability - none

The practices and processes referred to in the procedure by the TASK number are in the SPM.

For the method to clean the parts, refer to TASK 72-32-83-100-000 (CLEANING-000).

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
OvenLOCALOven

batch

Hardness tester (Durometer)LOCALHardness tester (Durometer)
IAE 3J12775 Bond test fixture0AM53IAE 3J127751
IAE 3J12785 Inspection stand0AM53IAE 3J127851
IAE 3J12792 Inspection stand0AM53IAE 3J127921
IAE 3J13521 Fixture, rubber molding0AM53IAE 3J135211
IAE 3J13155 Filler injector0AM53IAE 3J131551
Bamboo SpatulaLOCALBamboo Spatula

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-005 ADHESIVE TAPE (MASKING)LOCALCoMat 02-005
CoMat 02-099 LINT-FREE CLOTHLOCALCoMat 02-099
CoMat 05-050 SILICON CARBIDE GRIT1E1X8CoMat 05-050
CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)LOCALCoMat 06-064
CoMat 07-028 CHROMATE CONVERSION COATING FOR ALUMINUMLOCALCoMat 07-028
CoMat 08-032 PRIMERLOCALCoMat 08-032
CoMat 08-037 DELETEDLOCALCoMat 08-037
CoMat 08-038 SILICONE RUBBER COMPOUND64101CoMat 08-038

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-83-350-078-001 Remove the Damaged Abradable Seal

      NOTE

      This Step is an alternative to Step.

      1. Remove the damaged abradable seal.

      1. CAUTION

        TAKE CARE NOT TO DAMAGE THE PART.

        Use a Bamboo Spatula or similar tool.

    2. SUBTASK 72-32-83-350-078-002 Remove the Damaged Abradable Seal

      NOTE

      This Step is an alternative to Step.

    1. CAUTION

      DO NOT REMOVE MATERIAL FROM PARENT METAL.

      Refer to Figure.

      2. Remove the damaged abradable seal.

      1. Refer to SPM TASK 70-15-01-160-501.

      2. Make a test piece of AMS4132.

      3. Remove the remaining abradable seal, if required.

      1. CAUTION

        TAKE CARE NOT TO DAMAGE THE PART.

        Use a Bamboo Spatula or similar tool.

      4. Do a dimensional inspection.

      1. Use IAE 3J12792 Inspection stand, if necessary.

    3. SUBTASK 72-32-83-220-237 Examine the Repaired Area

      1. Fluorescent penetrant examine the repair area.

    4. SUBTASK 72-32-83-380-067 Surface Treat the Repair Area

      1. Clean the repaired area.

      2. Do a chemical touch up to the surface by a brush (if required).

      2. Refer to SPM TASK 70-38-02-300-503.

      3. Clean the repair area.

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

    4. Air dry for 15 to 30 minutes.

    5. SUBTASK 72-32-83-110-089 Clean the Repair Area

    1. Refer to Figure.

      2. Apply masking tape to the areas which do not require the silicone rubber compound.

      3. Apply a dry abrasive blast to the mold area.

      2. Air pressure 70 psig (5 kg/sqcm) at a distance of 6 in. (152 mm) minimum from air nozzle to the part.

      4. Remove any residual abrasive by vacuuming.

      1. CAUTION

        AFTER CLEANING, THE COMPONENT MUST NOT BE TOUCHED BY HAND AND MUST BE COVERED BY CRAFT PAPER, TO PREVENT CONTAMINATION.

        Cover the component with craft paper to prevent contamination.

    6. SUBTASK 72-32-83-380-059 Apply Primer to the Surface after Cleaning

    1. Refer to Figure.

      2. NOTE

        Store the primer in small containers for single usage only. The primer that remains in the glass bottle after coating must not be used.

        Within 30 minutes of cleaning.

      2. Refer to the SPM TASK 70-36-06-360-501.

      3. Apply a 0.0001 in. (0.003 mm) coat of primer to the mold surface using unsized cheese cloth.

      1. Refer to the SPM TASK 70-36-06-360-501.

    7. SUBTASK 72-32-83-360-077 Mix the Silicon Rubber Compound

      1. CAUTION

        THIS COMPOUND HAS A GUARANTEED SHELF LIFE OF NOT LESS THAN SIX MONTHS FROM THE DATE OF SHIPMENT. A SHELF LIFE EXTENSION OF ONE MONTH CAN BE PERMITTED ON THE COMPOUND PROVIDED THE VISCOSITY CHECK IS WITHIN THE LIMITS THAT FOLLOW.
        VISCOSITY AT 70 TO 80 DEG F (22.7 TO 25.3 DEG C).
        COMPOUND AS RECEIVED: 3000 - 5000 POISES.
        COMPOUND MIXED WITH CURING AGENT: 1300 - 3500 POISES.
        COMPOUND AS RECEIVED HAS BEEN STORED AT A TEMPERATURE NOT HIGHER THAN 90 DEG F (32 DEC C). COMPOUND WHICH HAS BEEN STORED UNDER THE ABOVE CONDITIONS FOR MORE THAN SIX MONTHS SHALL BE DISCARDED.

        NOTE

        The rubber and catalyst in each kit are chemically matched and should not be mixed with components of other kits.

        Mix the silicon rubber compound.

      2. Refer to the SPM TASK 70-36-06-360-501.

      3. Mix the silicon rubber compound at 70 to 80 deg F (21 to 27 deg C) for 30 to 40 minutes.

    2. Mixing ratio - Rubber 95.5 to 100.5 parts by weight. Catalyst 9.8 to 10.2 parts by weight.

      3. Remove the gas from the mixture.

      1. Refer to the SPM TASK 70-36-06-360-501.

      2. Applying a vacuum of 25 to 50 mmHg for 30 minutes minimum.

    8. SUBTASK 72-32-83-360-078 Mold the Silicon Rubber Compound

      1. Attach the component to the molding fixture.

      2. Put the degassed silicon rubber compound into the injector.

      3. Pour the silicon rubber compound into the component with the use of the injector.

      1. Until the silicon rubber comes out from the vent port, use an injection pressure of 60 psi (4.22 kg/sqcm).

      2. When silicon rubber comes out from the vent port, use an injection pressure of 30 psi (2.11 Kg/sqcm).

    9. SUBTASK 72-32-83-360-079 Cure the Silicon Rubber Compound

    1. Remove the injector.

      2. Put the LPC mid case assembly in the oven.

      1. Use the batch oven.

      3. Cure the compound.

      1. Refer to the SPM TASK 70-36-06-360-501.

      2. Cure at 290 to 310 deg F (143 to 154 deg C) for one hour.

    4. Remove the component from the molding fixture.

      5. Cure the compound.

      1. Refer to the SPM TASK 70-36-06-360-501.

      2. Cure the removed component at 390 to 410 deg F (199 to 210 deg C) for one hour.

    10. SUBTASK 72-32-83-220-161 Examine the Repaired Area

    1. Refer to Figure and Figure.

      2. Visually examine the repaired area.

      1. Cracks are not permitted.

      2. Bubbles are not permitted.

      3. Foreign inclusions are not permitted.

      4. Peelings are not permitted.

      5. Refer to the SPM TASK 70-36-06-360-501.

      3. Do a dimensional check of the diameter to the repaired area. If necessary, grind the diameter of the repaired area.

      1. Refer to TASK 72-32-83-200-000 (INSPECTION-000) for the applicable Inspection TASK.

      4. Do a hardness check of the repaired area at four equally spaced positions on the circumference.

      1. Use a durometer tester.

      2. Refer to the SPM TASK 70-36-06-360-501.

      3. Hardness: ASTM D2240 (Durometer 'A') 52 - 65.

    11. SUBTASK 72-32-83-220-162 Do a Test to the Repaired Area.

    1. Refer to Figure.

      2. NOTE

        The bond test shall be done to the conditions that follow:

        Do a bond test to the repaired area.

      2. Signs of a bulge or air leakage are not permitted.

    3. Inspection gas: Air or nitrogen gas.

    4. Gas pressure: 400 psi (28.1 Kg/sqcm).

      5. Inspection position; Refer to Figure.

      1. Vary the pattern as necessary to inspect the partially repaired areas.

    6. Probe angle: Approximately 45 degrees.

    12. 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:

Deleted step. (19VC634)

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:1E1X8
Enterprise Name:SAINT-GOBAIN CERAMICS AND PLASTICS, INC
BU Name:SAINT-GOBAIN CERAMICS AND PLASTICS, INC
Street:1 NEW BOND ST
City:WORCESTER
State:MA
Zip Code:01606
Country:UNITED STATES OF AMERICA
Phone Number:1-508-795-5000, 1-800-243-0028
Fax Number:1-508-795-2380
Internet:www.saint-gobain-northamerica.com
Manufacturer Code:64101
Enterprise Name:DELETED, SEE CAGE CODE 05972
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 02-005
Type:sp01
Supply Short Name:CoMat 02-005 ADHESIVE TAPE (MASKING)
Supply Name:CoMat 02-005 ADHESIVE TAPE (MASKING)
Specification Groups:
Doc NumberType
OMAT: 2/94 (RR REF)AT 7 BLACK, WATERPROOF
Suppliers:
ManufacturerRemarks
LOCAL
U0415
K6835
Manufacturer Code:X222X
Supply Number:CoMat 02-099
Type:sp01
Supply Short Name:CoMat 02-099 LINT-FREE CLOTH
Supply Name:CoMat 02-099 LINT-FREE CLOTH
Specification Groups:
Doc NumberType
WHERE COMAT 02-099 IS SPECIFIED WITH NO SUFFIX, USE COMAT 02-099A OR COMAT 02-099B.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:1E1X8
Supply Number:CoMat 05-050
Type:sp01
Supply Short Name:CoMat 05-050 SILICON CARBIDE GRIT
Supply Name:CoMat 05-050 SILICON CARBIDE GRIT
Specification Groups:
Doc NumberType
PMC 3053-31SILICON CARBIDE 5348 COATING No. 60 GRIT
Suppliers:
ManufacturerRemarks
1E1X8
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
Supply Number:CoMat 07-028
Type:sp01
Supply Short Name:CoMat 07-028 CHROMATE CONVERSION COATING FOR ALUMINUM
Supply Name:CoMat 07-028 CHROMATE CONVERSION COATING FOR ALUMINUM
Specification Groups:
Doc NumberType
DELETED. USE COMAT 01-275
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:X222X
Supply Number:CoMat 08-032
Type:sp01
Supply Short Name:CoMat 08-032 PRIMER
Supply Name:CoMat 08-032 PRIMER
Specification Groups:
Doc NumberType
DELETED. USE ONE OF THE COMAT 08-032 LETTER SUFFIX ALTERNATIVE MATERIALS.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:X111X
Supply Number:CoMat 08-037
Type:sp01
Supply Short Name:CoMat 08-037 DELETED
Supply Name:CoMat 08-037 DELETED
Specification Groups:
Doc NumberType
DELETED
Suppliers:
ManufacturerRemarks
X111X
Manufacturer Code:FAK74
Supply Number:CoMat 08-038
Type:sp01
Supply Short Name:CoMat 08-038 SILICONE RUBBER COMPOUND
Supply Name:CoMat 08-038 SILICONE RUBBER COMPOUND
Specification Groups:
Doc NumberType
JCR-106 (JAEC REF)BLUESIL V-622
JS-3024 (JAEC REF)
Suppliers:
ManufacturerRemarks
FAK74
Link not Found
Manufacturer Code:LOCAL
Tool Number:Hardness tester (Durometer)
Tool Name:Hardness tester (Durometer)
Manufacturer Code:0AM53
Tool Number:IAE 3J12775
Tool Name:IAE 3J12775 Bond test fixture
Manufacturer Code:0AM53
Tool Number:IAE 3J12785
Tool Name:IAE 3J12785 Inspection stand
Manufacturer Code:0AM53
Tool Number:IAE 3J12792
Tool Name:IAE 3J12792 Inspection stand
Manufacturer Code:0AM53
Tool Number:IAE 3J13155
Tool Name:IAE 3J13155 Filler injector
Manufacturer Code:0AM53
Tool Number:IAE 3J13521
Tool Name:IAE 3J13521 Fixture, rubber molding
Manufacturer Code:LOCAL
Tool Number:Oven
Tool Name:Oven