TASK 72-32-35-300-011 Front Bearing Compartment Rear Air Seal Assembly - Repair The Seal Land By Plasma Spraying, Repair-009 (VRS1266)

DMC:V2500-A5-72-32-3501-00A-609A-C|Issue No:001.00|Issue Date:2019-08-01

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 72-32-35-300-011 Front Bearing Compartment Rear Air Seal Assembly - Repair The Seal Land By Plasma Spraying, Repair-009 (VRS1266)

Effectivity

FIG/ITEM

PART NO.

01-100

5R0170

Material of component

PART IDENT

SYMBOL

MATERIAL

Rear Air Seal

-

Titanium alloy

General

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 number are in SPM.

This repair scheme gives the procedure to plasma spray the seal land of the rear air seal assembly.

NOTE

Equivalent equipment may be used.

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Abrasive blasting facilityLOCAL
Grinding MachineLOCALGrinding Machine
Hand held pneumatic grinderLOCAL
LatheLOCAL
Rotary filesLOCAL
Standard fluorescent inspection equipmentLOCAL

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-047 TAPE, HEAT REFLECTIVE52152CoMat 02-047
CoMat 03-057 ALUMINIUM ALLOY/POLYESTERCOMPOSITELOCALCoMat 03-057
CoMat 03-089C METAL SPRAYING POWDER Ni/Al (95/5)00741CoMat 03-089C
CoMat 05-001 ABRASIVE MEDIUM, ALUMINIUM OXIDE, 20/30 GRADELOCALCoMat 05-001

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-35-325-062 Remove the Seal Land Material

    1. Refer to Figure.

      2. Attach the rear air seal on a Lathe, set the rear air seal to run true.

      1. Use a Lathe.

      3. Machine the seal land material.

      1. Turn to remove seal land material. You must not remove any metal from the rear air seal.

    2. SUBTASK 72-32-35-350-064 Remove the Remaining Seal Land Material

    1. Refer to Figure.

      2. Remove the material.

      1. Use the Hand held pneumatic grinder with Rotary files or applicable alternatives.

      2. You must not remove any metal from the rear air seal.

    3. SUBTASK 72-32-35-220-074 Inspect the Rear Air Seal

    1. Refer to Figure.

      2. Visual examine and measure the dimensions of the repaired area.

      1. Make sure the damaged seal land material has been completely removed.

    4. SUBTASK 72-32-35-230-059 Examine the Rear Air Seal for Cracks

    1. Refer to Figure.

      2. Do a penetrant crack test of the machined area.

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

        2. No cracks are permitted.

    5. SUBTASK 72-32-35-120-053 Abrasive Blast the Rear Air Seal

    1. Refer to Figure.

    2. Seal the surface not to be plasma sprayed.

      3. Abrasive blast the rear air seal surface to be plasma sprayed.

      1. Refer to SPM TASK 70-12-02-120-501.

      4. Remove the mask.

      1. Be careful not to touch prepared surfaces before plasma spraying.

    6. SUBTASK 72-32-35-340-058 Apply Plasma Spray on the Seal Land

    1. Refer to Figure.

      2. Seal the surface not to be plasma sprayed.

      1. Refer to SPM TASK 70-34-18-380-501.

      3. Apply the bond coat.

        1. Refer to SPM TASK 70-34-01-340-501.

        2. Apply a thickness of 0.003 in. to 0.005 in. (0.07 mm to 0.13 mm).

    4. Remove the mask.

    7. SUBTASK 72-32-35-340-059 Apply Plasma Spray on the Seal Land

    1. Refer to Figure.

      2. Seal the surface not to be plasma sprayed.

      1. Refer to SPM TASK 70-34-18-380-501.

      3. Apply the plasma spray.

        1. Refer to SPM TASK 70-34-01-340-501.

        2. Apply a thickness of more than 0.052 in. (1.3 mm).

    4. Remove the mask.

    8. SUBTASK 72-32-35-324-053 Grind the Seal Land

    1. Refer to Figure.

      2. Grind the plasma sprayed seal land to 8.2034 in. to 8.2061 in. (208.364 mm to 208.436 mm).

        1. Refer to SPM TASK 70-34-01-340-501.

        1. Use grinding machine.

    9. SUBTASK 72-32-35-220-075 Examine the Rear Air Seal

    1. Refer to Figure.

    2. Visual examine and measure the dimensions of the repaired area.

    10. 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:

Added new repair. (94VJ837A)

Manufacturer Code:00741
Enterprise Name:Was BOC GASES
BU Name:DELETED, REFER TO SUPPLIER CODE 46AN7
Manufacturer Code:52152
Enterprise Name:3M COMPANY
BU Name:3M CENTER
Department:INDUSTRIAL TAPE AND SPECIALTIES DIV.
Street:BUILDING 220-7W-03
City:ST. PAUL
State:MN
Zip Code:55144-1000
Country:USA
Phone Number:1-651-733-1110, 1-800-362-3550, 1-800-223-7427
Fax Number:1-651-737-4380
Internet:www.mmm.com, www.3m.com
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:X222X
Supply Number:CoMat 02-047
Type:sp01
Supply Short Name:CoMat 02-047 TAPE, HEAT REFLECTIVE
Supply Name:CoMat 02-047 TAPE, HEAT REFLECTIVE
Specification Groups:
Doc NumberType
If CoMat 02- 047 is specified with no suffix, use one of the CoMat 02-047 letter suffix alternative materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Supply Number:CoMat 03-057
Type:sp01
Supply Short Name:CoMat 03-057 ALUMINIUM ALLOY/POLYESTERCOMPOSITE
Supply Name:CoMat 03-057 ALUMINIUM ALLOY/POLYESTERCOMPOSITE
Specification Groups:
Doc NumberType
MSRR9507/15METCO 601NS
OMAT:3/143MIL-P-85856/22
JCR-022MIL-P-85856/22
Suppliers:
ManufacturerRemarks
LOCAL
39918
IE103
IE195
IE200
K1030
K6835
Manufacturer Code:01FK3
Supply Number:CoMat 03-089C
Type:sp01
Supply Short Name:CoMat 03-089C METAL SPRAYING POWDER Ni/Al (95/5)
Supply Name:CoMat 03-089C METAL SPRAYING POWDER Ni/Al (95/5)
Specification Groups:
Doc NumberType
PWA 1337 (PW REF)METCO 450NS or Amdry 956
Suppliers:
ManufacturerRemarks
01FK3
Manufacturer Code:LOCAL
Supply Number:CoMat 05-001
Type:sp01
Supply Short Name:CoMat 05-001 ABRASIVE MEDIUM, ALUMINIUM OXIDE, 20/30 GRADE
Supply Name:CoMat 05-001 ABRASIVE MEDIUM, ALUMINIUM OXIDE, 20/30 GRADE
Specification Groups:
Doc NumberType
Use one of the CoMat 05-001 letter suffix alternatives.
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:LOCAL
Tool Number:Grinding Machine
Tool Name:Grinding Machine
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