TASK 75-22-41-300-001 No. 4 Bearing Compartment Cooler (ACAC) Air Ducts - Blend Repair Surface Damage, Repair-001 (VRS1643)

DMC:V2500-A0-75-22-4101-00A-649A-C|Issue No:001.00|Issue Date:2014-05-01

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 75-22-41-300-001 No. 4 Bearing Compartment Cooler (ACAC) Air Ducts - Blend Repair Surface Damage, Repair-001 (VRS1643)

Effectivity

FIG/ITEM

PART NO.

01-300

5T0114

01-300

5T8199

01-400

5T0115

01-400

5T8128

Material of component

PART IDENT

IAE SYMBOL

MATERIAL

Duct

Titanium alloy and pure Titanium

General

This Repair gives the procedure for blending the duct.

Price and availability - Refer to IAE.

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

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Standard workshop toolsLOCALStandard workshop tools
Portablegrinding equipmentLOCALPortable grinding equipment
Penetrant Crack Test EquipmentLOCALPenetrant Crack Test Equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-020 WATERPROOF SILICON CARBIDELOCALCoMat 05-020
CoMat 05-021 WATERPROOF SILICON CARBIDE44197CoMat 05-021

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 75-22-41-350-051 Dress to Remove Damage in the Mating Surface, Location 2 and 5

      CAUTION

      TITANIUM COMPONENTS
      SILICON CARBIDE TYPE WHEELS, STONES AND ABRASIVE PAPERS ARE TO BE USED FOR THIS REPAIR.
      ALUMINUM OXIDE TYPES MUST NOT BE USED.
      THE MATERIAL WILL OXIDIZE AND CRACK IF MECHANICAL CUTTERS ARE USED HEAVILY. THIS HAS OCCURRED IF THE COMPONENT SHOWS DARK STRAW TO BLUE DISCOLORATION. IF AT ANY TIME THIS COLORATION OCCURS THE COMPONENT MUST BE REJECTED.

      1. WARNING

        DO NOT OPERATE WITHOUT SAFETY GOGGLES AND OTHER GUARDS EQUIPMENT. FLYING MATERIAL CAN CAUSE EYE INJURY.

        NOTE

        Keep the material removal to the minimum necessary to remove damaged area.

        Dress to remove nicks and scores in the mating surface.

      1. Refer to Figure and Figure.

      3. Dress until all damage is removed.

      2. Blend dressed area and polish out scores.

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

      2. CoMat 05-020 WATERPROOF SILICON CARBIDE abrasive paper and CoMat 05-021 WATERPROOF SILICON CARBIDE abrasive paper Maximum blend limit is 0.005 in. (0.12 mm) in depth.

    2. SUBTASK 75-22-41-350-061 Dress to Remove Damage in the Bolt Hole B and D, Location 3 and 6

      CAUTION

      TITANIUM COMPONENTS
      SILICON CARBIDE TYPE WHEELS, STONES AND ABRASIVE PAPERS ARE TO BE USED FOR THIS REPAIR.
      ALUMINUM OXIDE TYPES MUST NOT BE USED.
      THE MATERIAL WILL OXIDIZE AND CRACK IF MECHANICAL CUTTERS ARE USED HEAVILY. THIS HAS OCCURRED IF THE COMPONENT SHOWS DARK STRAW TO BLUE DISCOLORATION. IF AT ANY TIME THIS COLORATION OCCURS THE COMPONENT MUST BE REJECTED.

      1. WARNING

        DO NOT OPERATE WITHOUT SAFETY GOGGLES AND OTHER GUARDS EQUIPMENT. FLYING MATERIAL CAN CAUSE EYE INJURY.

        NOTE

        Keep the material removal to the minimum necessary to remove damaged area.

        Dress to remove burrs, nicks and scores in the bolt holes.

      1. Refer to Figure and Figure.

      3. Dress until all damage is removed.

      2. Blend dressed area and polish out scores.

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

      3. Maximum blend limit is 0.005 in. (0.12 mm) in depth.

      4. Maximum hole diameter is 0.305 in. (7.74 mm).

    3. SUBTASK 75-22-41-350-062 Dress to Remove Damage in the Bolt Hole A and C, Location 1 and 4

      CAUTION

      TITANIUM COMPONENTS
      SILICON CARBIDE TYPE WHEELS, STONES AND ABRASIVE PAPERS ARE TO BE USED FOR THIS REPAIR.
      ALUMINUM OXIDE TYPES MUST NOT BE USED.
      THE MATERIAL WILL OXIDIZE AND CRACK IF MECHANICAL CUTTERS ARE USED HEAVILY. THIS HAS OCCURRED IF THE COMPONENT SHOWS DARK STRAW TO BLUE DISCOLORATION. IF AT ANY TIME THIS COLORATION OCCURS THE COMPONENT MUST BE REJECTED.

      1. WARNING

        DO NOT OPERATE WITHOUT SAFETY GOGGLES AND OTHER GUARDS EQUIPMENT. FLYING MATERIAL CAN CAUSE EYE INJURY.

        NOTE

        Keep the material removal to the minimum necessary to remove damaged area.

        Dress to remove burrs, nicks and scores in the bolt holes.

      1. Refer to Figure and Figure.

      3. Dress until all damage is removed.

      2. Blend dressed area and polish out scores at the bolt hole A.

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

      3. Maximum blend limit is 0.005 in. (0.12 mm) in depth.

      4. Maximum hole diameter is 0.4151 in. (10.54 mm).

      3. Blend dressed area and polish out scores at the bolt hole C.

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

      3. Maximum blend limit is 0.005 in. (0.12 mm) in depth.

      4. Maximum hole diameter is 0.4411 in. (11.20 mm).

    4. SUBTASK 75-22-41-220-073 Examine the Duct

      1. Visually examine the repaired area.

      1. Visually examine the repaired area for nicks, scores and/or burrs using 10X magnifying glass.

    5. SUBTASK 75-22-41-230-061 Examine the Ducts (01-300 and 01-400) for cracks

      1. Do a penetrant crack test on the repaired area.

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

      2. Use Penetrant Crack Test Equipment. No cracks are permitted.

    6. 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
Manufacturer Code:44197
Enterprise Name:SAINT-GOBAIN INDUSTRIAL CERAMICS INC.
BU Name:SAINT-GOBAIN ABRASIVES, INC
Street:ONE NEW BOND STREET
P.O. Box:PO BOX 15008
City:WORCESTER
State:MA
Zip Code:01615-0008
Country:USA
Phone Number:1-508-795-5000
Fax Number:1-508-795-2828
Internet:www.saint-gobain-northamerica.com
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:1E1X8
Supply Number:CoMat 05-020
Type:sp01
Supply Short Name:CoMat 05-020 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-020 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/33 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 320 (ANSI B74.18)
JCR-027 (JAEC REF)
JCR-186 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
LOCAL
K6835
Manufacturer Code:1E1X8
Supply Number:CoMat 05-021
Type:sp01
Supply Short Name:CoMat 05-021 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-021 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/35 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 240 (ANSI B74.18 )
JCR-188 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Link not Found
Manufacturer Code:LOCAL
Tool Number:Portable grinding equipment
Tool Name:Portablegrinding equipment
Manufacturer Code:LOCAL
Tool Number:Standard workshop tools
Tool Name:Standard workshop tools