TASK 72-32-83-300-039 LPC Front Case - Replace The Abradable Seal, Repair-039 (VRS1760)

DMC:V2500-A0-72-32-8330-02A-920A-C|Issue No:001.00|Issue Date:2013-11-01

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 72-32-83-300-039 LPC Front Case - Replace The Abradable Seal, Repair-039 (VRS1760)

Effectivity

FIG/ITEM

PART NO.

02-350

5A0458

Material of component

PART IDENT

SYMBOL

MATERIAL

LP compressor front case

Aluminum alloy

General

Price and availability - none

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
Bamboo scraperLOCALBamboo scraper
Dry blast cabinetLOCALDry blast cabinet
OvenLOCALOven
KnifeLOCALKnife

Cutter

Hardness tester (durometer)LOCALHardness tester (durometer)
InjectorLOCALInjector

(air pressure type)

IAE 3J12804 Molding fixture0AM53IAE 3J128041
IAE 3J12775 Bond test fixture0AM53IAE 3J127751
IAE 3J12785 Inspection stand0AM53IAE 3J127851
IAE 3J12792 Inspection stand0AM53IAE 3J127921

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-031 ACETONE (CH3)2COLOCALCoMat 01-031
CoMat 01-124 ISOPROPYL ALCOHOLLOCALCoMat 01-124
CoMat 01-275 CHROMATE CONVERSION COATING FOR ALUMINIUMLOCALCoMat 01-275
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 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 72-32-83-360-083 Remove the Damaged Abradable Seal

    1. Refer to Figure.

      2. NOTE

        This Step is an alternative to Step.

        NOTE

        Take care not to damage the LP compressor front case.

        Remove the damaged abradable seal.

      1. Use a bamboo scraper or similar.

    2. SUBTASK 72-32-83-120-063 Clean the Surfaces which are to be Applied with Silicone Rubber Compound by Water Blast Cleaning

    1. Refer to Figure and Figure.

      2. NOTE

        This Step is an alternative to Step.

        Remove the silicone rubber compound by water blast jet.

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

      2. Make Test Piece of AMS4132.

      3. Do a dimensional inspection.

      1. Refer to Figure.

    3. SUBTASK 72-32-83-220-194 Examine the Surfaces from which Silicone Rubber Compound are to be Removed

    1. Refer to Figure.

      2. Fluorescent penetrant examine the surface where silicone rubber compound is removed.

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

    4. SUBTASK 72-32-83-380-063 Apply Surface Protection to the LPC Case Assembly

      1. Apply the chromate conversion coating for aluminum with a brush to the surface where silicone rubber compound is removed.

      1. Refer to the SPM TASK 70-38-02-300-503.

      3. Apply chromate conversion coating to the surface to which water jet was applied in Step.

      4. Dry abrasive blast is not to be applied in Step.

    2. Use clean cold water and then dry air blast to dry the repaired area.

    5. SUBTASK 72-32-83-120-056 Clean the Surfaces which are to be Applied with Silicone Rubber Compound

    1. Refer to Figure.

      2. Mask the areas which are not to be applied with silicone rubber compound.

      3. Dry abrasive blast the molding area.

      2. Use a dry blast system cabinet with air pressure of 75 to 99 psig (518 to 683 kPa) at a minimum distance of 6 in. (152 mm) from the air nozzle to the component surface.

    4. Remove the abrasive grit that remains by vacuuming.

      5. Wipe the blasted surfaces.

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

    6. NOTE

      After cleaning, the component must not be touched by hand and must be covered with craft paper to prevent contamination.

      Air dry for 15 minutes minimum.

    6. SUBTASK 72-32-83-360-084 Apply Primer to the Surfaces after Cleaning

      1. NOTE

        The primed surface must have a faint pink color. If there is no color, the primer layer is not continuous. If the color is bright, streaky bright or chalky, the primer is too thick.
        Keep the primer in a small container for single use only. Do not use the primer that remains.

        Prime the surface of the molding immediately the molding is dry. Use a piece of cheese cloth to apply the primer.

      1. Thickness of primer layer: 0.0001 in. (0.003 mm).

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

      2. Cure the primed surface for a minimum of 2 hours, at more than 77 deg F (25 deg C) and more than 50 percent relative humidity.

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

    7. SUBTASK 72-32-83-360-085 Mix the Silicone Rubber Compound

      1. NOTE

        Silicone rubber compound has a shelf life of six months from the date of shipment.
        The compound, as received, must be kept at a temperature less than 90 deg F (32 deg C).

        Mix the silicone rubber compound for a minimum of ten minutes at between 70 to 80 deg F (21 to 27 deg C).

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

      2. NOTE

        The resin and the catalyst in each kit are chemically matched. Do not mix with components from other kits.

        Mix ratio.

      1. Rubber - 99.5 to 100.5 parts by weight.

      2. Catalyst - 9.8 to 10.2 parts by weight.

    3. Remove the gases from the mixture at a maximum vacuum of 50 mm Hg. for a minimum of 30 minutes.

    8. SUBTASK 72-32-83-360-086 Mold the Silicone Rubber Compound

      1. Clean the molding fixture.

    2. Attach the component to the molding fixture.

      3. Put the gas free silicone rubber compound into an injector.

      1. Use an injector, air pressure type.

      4. Inject the silicone rubber compound into the component (with the molding fixture attached) until the compound comes out of the vent port of the fixture.

      1. Injection pressure: 35 psig (241.5 kPa).

    5. Remove the injector.

    9. SUBTASK 72-32-83-360-087 Cure the Silicone Rubber Compound

    1. Put the LP compressor front case assembly into an oven.

      2. Cure the compound.

      1. Cure at 290 to 310 deg F (143 to 154 deg C).

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

    3. Remove the component from the molding fixture.

      4. Cure the removed component.

      1. Cure at 390 to 410 deg F (199 to 210 deg C) for one hour.

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

    10. SUBTASK 72-32-83-220-165 Examine the Repaired Area

    1. Refer to Figure and Figure.

      2. Visually examine the repaired area.

      1. Cracks are not permitted.

      2. Foreign inclusion is not permitted.

      3. Peelings are not permitted.

      4. Bubbles are not permitted.

    3. Do a dimensional check of molding diameter of abradable seal. If necessary, grind the diameter of the abradable seal.

      4. Do a dimensinal check of excess abradable seal (Dim. H.). If necessary, remove the excess resin by using grinding equipment, cutter/knife and/or equivalent.

      1. If Dim. H. the height between the front liner surface of LPC front case and inner surface of abradable seal, is no more than 0.019 in. (0.50 mm), blend abradable seal.

      5. Do a hardness check of the repaired area at four equal spaced positions on the circumference.

      1. Use a hardness tester (durometer).

      2. Hardness: ASTM D2240 (durometer A) 55-65.

    11. SUBTASK 72-32-83-220-073 Do a Bond Test of the Repaired Area

    1. Refer to Figure.

      2. NOTE

        The bond test must be done after curing of the rubber compound to the conditions that follow:
        Inspection gas: Air or nitrogen gas.
        Gas pressure: 200 psig (1380 kPa).
        Inspection position: Change the pattern as necessary to examine the not fully repaired areas.
        Probe angle: Approximately 45 degrees.

        Do a bond test of the repaired area.

      2. No signs of bulging or air leakage are permitted.

    12. Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Sheet 2

    Legend
    Repair Details and Dimensions

    Sheet 2

    Close

    Figure: Repair Details and Dimensions

    Sheet 3

    Legend
    Repair Details and Dimensions

    Sheet 3

    Close

    Figure: Repair Details and Dimensions

    Sheet 4

    Legend
    Repair Details and Dimensions

    Sheet 4

    Close

    Figure: Repair Details and Dimensions

    Sheet 5

    Legend
    Repair Details and Dimensions

    Sheet 5

    Close

    Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
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 01-031
Type:sp01
Supply Short Name:CoMat 01-031 ACETONE (CH3)2CO
Supply Name:CoMat 01-031 ACETONE (CH3)2CO
Specification Groups:
Doc NumberType
OMAT: 150 (RR REF)COMMERCIAL GRADE O-A-51
PMC 9008 (PW REF)COMMERCIAL GRADE O-A-51
JCR-041 (JAEC REF)COMMERCIAL GRADE O-A-51
MTH 169 (98%) (MTU REF)COMMERCIAL GRADE O-A-51
Suppliers:
ManufacturerRemarks
LOCAL
K6835
81348
K3504
U1185
24853
70657
Manufacturer Code:LOCAL
Supply Number:CoMat 01-124
Type:sp01
Supply Short Name:CoMat 01-124 ISOPROPYL ALCOHOL
Supply Name:CoMat 01-124 ISOPROPYL ALCOHOL
Specification Groups:
Doc NumberType
OMAT:1/40GPR TECHNICAL GRADE
PMC 9094GPR TECHNICAL GRADE
JCR-011GPR TECHNICAL GRADE
Suppliers:
ManufacturerRemarks
LOCAL
U1185
24853
K6835
Manufacturer Code:00BB6
Supply Number:CoMat 01-275
Type:sp01
Supply Short Name:CoMat 01-275 CHROMATE CONVERSION COATING FOR ALUMINIUM
Supply Name:CoMat 01-275 CHROMATE CONVERSION COATING FOR ALUMINIUM
Specification Groups:
Doc NumberType
BONDERITE M-CR-1200S AEROJCR-047 (JAEC REF)
JCR-048 (JAEC REF)SPMC 206 (PW REF)
Suppliers:
ManufacturerRemarks
00BB6
71410
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: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
Manufacturer Code:LOCAL
Tool Number:Bamboo scraper
Tool Name:Bamboo scraper
Manufacturer Code:LOCAL
Tool Number:Dry blast cabinet
Tool Name:Dry blast cabinet
Link not Found
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 3J12804
Tool Name:IAE 3J12804 Molding fixture
Manufacturer Code:LOCAL
Tool Number:Injector
Tool Name:Injector
Manufacturer Code:LOCAL
Tool Number:Knife
Tool Name:Knife
Manufacturer Code:LOCAL
Tool Number:Oven
Tool Name:Oven