TASK 72-32-76-300-016 LPC Stage 2.5 Stator - Replace The Vane Potting, Repair-016 (VRS1874)

DMC:V2500-A0-72-32-7600-11A-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 72-32-76-300-016 LPC Stage 2.5 Stator - Replace The Vane Potting, Repair-016 (VRS1874)

Effectivity

FIG/ITEM

PART NO.

01-400

5R0097

01-400

5R0189

General

This Repair TASK gives the procedure for replacement of the vane potting material.

Material of component

RR

DESCRIPTION

SYMBOL

MATERIAL

Shroud outer ring

Aluminum alloy

Stage 2.5 vane (O/C)

Aluminum alloy

Stage 2.5 vane (Nom)

Aluminum alloy

Stage 2.5 vane (U/C)

Aluminum alloy

Price and availability

Refer to IAE for any of the following:

Tools

Engine parts

Repair of spares.

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

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
BrushLOCALBrush
SpatulaLOCALSpatula
Filler injection gunLOCALFiller injection gun
OvenLOCALOven
Precision weighing scalesLOCALPrecision weighing scales
Vacuum pumpLOCALVacuum pump
IAE 3J13212 Shape gage0AM53IAE 3J132121
IAE 3J13213 Fillet former0AM53IAE 3J132131

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-076 METHYL ETHYL KETONELOCALCoMat 01-076
CoMat 02-001 ADHESIVE TAPE (MASKING)LOCALCoMat 02-001
CoMat 02-005 ADHESIVE TAPE (MASKING)LOCALCoMat 02-005
CoMat 02-099 LINT-FREE CLOTHLOCALCoMat 02-099
CoMat 08-032 PRIMERK6835CoMat 08-032
CoMat 08-042 SILICONE RUBBER COMPOUNDX222XCoMat 08-042

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-76-350-064 Remove the Defective Rubber

      1. Remove the defective rubber.

      1. Use hand tools.

      2. Remove the remaining rubber from the outer shroud, if the remaining rubber is not fully removed in Step.

        1. Apply adhesive tape for masking to the areas which do not require remaining rubber.

        2. Use dry plastic blast to remove the remaining rubber.

        1. Refer to SPM TASK 70-12-07-120-501.

      3. Remove adhesive tape for masking.

    2. SUBTASK 72-32-76-110-060 Clean the Repair Area

    3. SUBTASK 72-32-76-380-057 Apply the Primer

      1. NOTE

        Parts must have the CoMat 08-042 SILICONE RUBBER COMPOUND applied within 24 hours of completion of primer application.

        Apply the primer to the bond surfaces.

        1. Apply CoMat 08-032 PRIMER with a clean brush or CoMat 02-099 LINT-FREE CLOTH on to the metal surface only. The primer must not be applied to the silicone rubber.

        1. Refer to Figure and SPM TASK 70-36-04-360-501.

    4. SUBTASK 72-32-76-360-059 Mixing Instruction

      1. Measure out materials by weight as follows: 9.5 to 10.5 parts of rubber and 0.8 to 1.2 parts of curing agent.

      2. NOTE

        When mixed, the life of the silicone rubber compound is a maximum of three hours at room temperature.

        Mix the rubber and the curing agent.

      1. Use a clean Spatula or equivalent.

      3. Release the air from the mixed silicone rubber compound.

        1. Use the vacuum pump.

        1. Apply and keep a vacuum of 13.8 psi (95 Kpa).

        2. This must be kept for a minimum of 15 minutes.

    5. SUBTASK 72-32-76-360-060 Fill the Gaps with Mixed Silicone Rubber Compound

      1. Fill the gaps with mixed silicone rubber.

        1. Refer to Figure, Figure and Figure.

        1. Use IAE 3J13212 Shape gage 1 off and IAE 3J13213 Fillet former 1 off to make the silicone rubber compound the correct shape.

    6. SUBTASK 72-32-76-360-061 Cure the Filler Rubber

    1. Let the filler rubber cure for 24 hours at room temperature.

    2. Put the assembly in a curing oven at a temperature of between 295 deg F and 305 deg F (146.3 deg C and 151.7 deg C) for a minimum of one hour.

    3. Remove the assembly from the oven and let it cool to room temperature.

    7. SUBTASK 72-32-76-220-124 Visually Examine the Repaired Area

      1. Visually examine the repaired area.

        1. Refer to Figure, Figure and Figure.

        1. Lack of bond, blisters and cracks are not permitted.

        2. Voids are acceptable if less than 0.031 in. (0.08 mm).

        3. If necessary, do this TASK again.

    8. Figure: Primer application areas

    Primer application areas

    Figure: LP compressor stage 2.5 vanes

    LP compressor stage 2.5 vanes

    Figure: Silicone rubber application area

    Silicone rubber application area

    Figure: Silicone rubber application area

    Silicone rubber application area

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added steps, figure reference and deleted note. (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: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:X222X
Enterprise Name:N/A – REFER TO APPLICABLE COMAT SUFFIX
Manufacturer Code:LOCAL
Supply Number:CoMat 01-076
Type:sp01
Supply Short Name:CoMat 01-076 METHYL ETHYL KETONE
Supply Name:CoMat 01-076 METHYL ETHYL KETONE
Specification Groups:
Doc NumberType
METHYL ETHYL KETONE, TECHNICAL GRADE, CERTIFIED TO BSI BS 1940 OR ASTM D740, OR TT-M-261
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:LOCAL
Supply Number:CoMat 02-001
Type:sp01
Supply Short Name:CoMat 02-001 ADHESIVE TAPE (MASKING)
Supply Name:CoMat 02-001 ADHESIVE TAPE (MASKING)
Specification Groups:
Doc NumberType
OMAT: 230 (RR REF)ZINC OXIDE AT142
JCR-197 (JAEC REF)ZINC OXIDE AT142
Suppliers:
ManufacturerRemarks
LOCAL
K6835
U0415
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: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:X222X
Supply Number:CoMat 08-042
Type:sp01
Supply Short Name:CoMat 08-042 SILICONE RUBBER COMPOUND
Supply Name:CoMat 08-042 SILICONE RUBBER COMPOUND
Specification Groups:
Doc NumberType
Where CoMat 08-042 is specified with no suffix, use one of the CoMat 08-042 letter suffix alternative materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Tool Number:Brush
Tool Name:Brush
Manufacturer Code:LOCAL
Tool Number:Filler injection gun
Tool Name:Filler injection gun
Manufacturer Code:0AM53
Tool Number:IAE 3J13212
Tool Name:IAE 3J13212 Shape gage
Manufacturer Code:0AM53
Tool Number:IAE 3J13213
Tool Name:IAE 3J13213 Fillet former
Manufacturer Code:LOCAL
Tool Number:Oven
Tool Name:Oven
Manufacturer Code:LOCAL
Tool Number:Precision weighing scales
Tool Name:Precision weighing scales
Manufacturer Code:LOCAL
Tool Number:Spatula
Tool Name:Spatula
Manufacturer Code:LOCAL
Tool Number:Vacuum pump
Tool Name:Vacuum pump