TASK 72-32-93-300-007 Intermediate Structure Front Splitter - Repair The Damaged Boltholes Using Threaded Bush, Repair-007 (VRS1709)

DMC:V2500-A0-72-32-9301-00A-664A-C|Issue No:002.00|Issue Date:2017-11-01

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 72-32-93-300-007 Intermediate Structure Front Splitter - Repair The Damaged Boltholes Using Threaded Bush, Repair-007 (VRS1709)

Effectivity

FIG/ITEM

PART NO.

01-200

5A0460

Material of component

PART IDENT

SYMBOL

MATERIAL

Splitter fairing

Aluminum alloy

General

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

Price and availability - none

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Penetrant Crack Test EquipmentLOCALPenetrant crack test equipment
SpatulaLOCALSpatula
BrushLOCALBrush
Portablegrinding equipmentLOCALPortable grinding equipment
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-124 ISOPROPYL ALCOHOLLOCALCoMat 01-124
CoMat 01-275 CHROMATE CONVERSION COATING FOR ALUMINIUMLOCALCoMat 01-275
CoMat 01-337 SOLVENT CLEANERLOCALCoMat 01-337
CoMat 01-338 CLEANING SOLVENTLOCALCoMat 01-338
CoMat 05-020 WATERPROOF SILICON CARBIDELOCALCoMat 05-020
CoMat 05-021 WATERPROOF SILICON CARBIDE44197CoMat 05-021
CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)LOCALCoMat 06-064
CoMat 07-063 HEAT RESISTING EROSION RESISTANT COATING, EPOXY SILICONE65313CoMat 07-063
CoMat 08-015 RESINLOCALCoMat 08-015
CoMat 08-016 HARDENERLOCALCoMat 08-016

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-93-220-005 Check the Position of the Damaged Hole

    1. NOTE

      This repair is applicable to each damaged hole up to twice.

      NOTE

      This repair is not applicable to the hole which has been repaired by the threaded bushes M12 x 0.5 or 1/2 - 32 UN previously.

      Refer to Figure.

    2. Check and write down the hole number of the damaged hole.

    2. SUBTASK 72-32-93-320-001 Machine the Damaged Bolthole

    1. Refer to Figure.

      2. Machine the damaged bolthole and make a thread.

        1. Thread size of the machined hole must be M12 x 0.5, 7/16 - 32 UN or 1/2 - 32 UN as an oversize provided that the following.

        1. 1/2 - 32 UN oversized bush can be used for only as an oversize of 7/16 - 32 UN.

        2. If the damaged bolthole is repaired using M12 x 0.5 or 1/2 - 32 UN, this repair is not applicable anymore to the hole in future.

      2. Select the minimum machined hole size that all of the damage is fully removed.

      3. The machined hole edge must not reach to the inner surface boss edge.

    3. SUBTASK 72-32-93-220-006 Examine the Machined Thread

    1. Refer to Figure.

      2. Visually examine the thread.

      1. Use 10X magnifying glass. Burrs, corrosion, nicks, dents, scratches and galls are not permitted.

    3. Dimensionally examine the thread.

    4. SUBTASK 72-32-93-360-064 Make the Threaded Bush

    1. Refer to Figure.

      2. Make the threaded bush.

        1. Use AMS4132 or AMS4150 aluminum alloy.

        1. The thread size must be the same as that selected in Step 5.

    5. SUBTASK 72-32-93-220-007 Examine the Threaded Bush

    1. Refer to Figure.

      2. Visually examine the threaded bush.

      1. Use 10X magnifying glass. Burrs, corrosion, nicks, dents, scratches and galls are not permitted.

    3. Dimensionally examine the threaded bush.

    6. SUBTASK 72-32-93-240-001 Examine the Machined Thread and the Threaded Bush for Cracks

      1. Fluorescent penetrant examine the machined thread and the threaded bush.

    7. SUBTASK 72-32-93-350-060 Apply the Surface Protection to the Machined Thread and the Threaded Bush

      1. Remove the grease from the machined thread and the threaded bush.

      2. Apply chromate conversion coating to the machined thread and the threaded bush.

      1. Refer to the SPM TASK 70-38-02-300-002.

    8. SUBTASK 72-32-93-360-065 Make-up of the Two Part Low Temperature Curing Sealant/Adhesive

      1. Mix resin and harder.

      1. Refer to the SPM TASK 70-36-02-360-501, SUBTASK 70-36-02-360-004.

    9. SUBTASK 72-32-93-360-066 Apply and Cure the Two Part Low Temperature Curing Sealant/Adhesive

    1. Refer to Figure.

      2. CAUTION

        YOU MUST USE PLASTIC GLOVES DURING THE PREPARATION AND USE OF THE ADHESIVE TO PREVENT CONTAMINATION OF THE SKIN.

        CAUTION

        YOU MUST NOT EAT ANYTHING OR SMOKE AT THE LOCATIONS WHERE THESE MATERIALS ARE USED.

        CAUTION

        BONDING MUST BE DONE IMMEDIATELY AFTER THE SURFACE PREPARATION.

        Remove the grease from the machined thread and the threaded bush.

      3. Apply the adhesive to the mating surface of the machined thread on the splitter fairing and thread of the bush.

        1. Refer to the SPM TASK 70-36-02-360-021.

        1. Use spatula.

      4. Install the threaded bush to the machined thread of the splitter fairing.

      1. Wipe off the excess adhesive from the thread using a spatula.

      5. WARNING

        DO NOT TOUCH THE HOT SPLITTER FAIRING WITHOUT PROTECTIVE GLOVES IF THE PART IS HEATED FOR CURING.

        NOTE

        The pot life of resin/hardener mixture is about 2 hours at room temperature.

        Cure the adhesive.

        1. Refer to the SPM TASK 70-36-02-360-501, SUBTASK 70-36-02-360-021.

        1. Cure the adhesive at 68 deg F (20 deg C) for 48 hours, or 203 to 221 deg F (95 to 105 deg C) for one hour.

    10. SUBTASK 72-32-93-350-061 Blend the Surface of Installed Bush to the Round Shape

    1. Refer to Figure.

      2. Blend the surface of the installed bush.

        1. Surface finish on blended area should be same as that of the adjacent area.

    11. SUBTASK 72-32-93-350-062 Crimp the Surface of the Splitter Fairing

    1. Refer to: Figure

      2. Crimp the splitter fairing in two positions by applying slight punch to secure the bushing.

      1. The depth of crimp is less than 0.030 in. (0.76 mm) and the diameter is less than 0.0600 in. (1.52 mm).

    12. SUBTASK 72-32-93-320-002 Machine the Bolthole to the Installed Bush

    1. Refer to Figure.

    2. Drill the bolthole to the installed bush.

    3. Countersink the hole.

    13. SUBTASK 72-32-93-220-009 Examine the Bolthole

    1. Refer to Figure.

      2. Visually examine the bolthole.

      1. Use 10X magnifying glass. Burrs, corrosion, nicks, dents, scratches and galls are not permitted.

    3. Do a dimensional check on the bolthole.

    14. SUBTASK 72-32-93-220-008 Examine the Bolthole for Cracks

      1. Fluorescent penetrant examine the bolthole.

    15. SUBTASK 72-32-93-350-063 Identify the Repair

      1. Write the identity marking adjacent to the part number.

        1. Write VRS1709/U if the thread size is 7/16 - 32 UN, VRS1709/M if the thread size is M12 x 0.5 or VRS1709/OS if the thread size is 1/2 - 32 UN.

        1. Refer to the SPM TASK 70-09-00-400-501.

        2. Use vibro-engrave equipment.

    16. SUBTASK 72-32-93-350-064 Apply the Surface Protection to the Bolthole and the Marked Area

      1. Remove the grease from the machined hole and the threaded bush.

      2. Apply chromate conversion coating to the installed bush with the bolthole and the marked area.

      1. Refer to the SPM TASK 70-38-02-300-002. Use CoMat 01-275 CHROMATE CONVERSION COATING FOR ALUMINIUM.

    17. SUBTASK 72-32-93-380-053 Apply the heat resistant E.S. Coating to the Installed Bush

      1. Apply the heat resistant E.S. coating to the outer surface of the installed bush.

      2. Examine the coating surface.

      1. Refer to EM TASK 72-32-93-200-000, (72-32-93 INSPECTION-000).

    18. Figure: Dimensions of the Machined Hole of Splitter Fairing

    Dimensions of the Machined Hole of Splitter Fairing

    Figure: Dimensions of the Machined Hole of Splitter Fairing

    Dimensions of the Machined Hole of Splitter Fairing

    Figure: Dimensions of the Threaded Bushes

    Dimensions of the Threaded Bushes

    Figure: Dimensions of Repaired Splitter Fairing

    Dimensions of Repaired Splitter Fairing

    Figure: Dimensions of Repaired Splitter Fairing

    Dimensions of Repaired Splitter Fairing

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure to add repair using an oversized threaded bush to the bolthole. (02VJ802A and 02VJ802B)

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:65313
Enterprise Name:GLYPTAL INC
BU Name:GLYPTAL INC
Street:305 EASTERN AVENUE
City:CHELSEA
State:MA
Zip Code:02150-3344
Country:CANADA
Phone Number:1-617-884-6918
Email:bill323@cs.com
Internet:www.glyptal.com
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
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:0AM53
Supply Number:CoMat 01-337
Type:sp01
Supply Short Name:CoMat 01-337 SOLVENT CLEANER
Supply Name:CoMat 01-337 SOLVENT CLEANER
Specification Groups:
Doc NumberType
DELETED
Suppliers:
ManufacturerRemarks
0AM53
Manufacturer Code:K6835
Supply Number:CoMat 01-338
Type:sp01
Supply Short Name:CoMat 01-338 CLEANING SOLVENT
Supply Name:CoMat 01-338 CLEANING SOLVENT
Specification Groups:
Doc NumberType
DESOCLEAN 45SOLVENT CLEANER
Suppliers:
ManufacturerRemarks
K6835
5HCF1
K5635
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
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:65313
Supply Number:CoMat 07-063
Type:sp01
Supply Short Name:CoMat 07-063 HEAT RESISTING EROSION RESISTANT COATING, EPOXY SILICONE
Supply Name:CoMat 07-063 HEAT RESISTING EROSION RESISTANT COATING, EPOXY SILICONE
Specification Groups:
Doc NumberType
GLYPTAL S‐1193 (GRAY) or
GLYPTAL S‐1194 (CLEAR) or
GLYPTAL S‐1300 (WHITE)
Suppliers:
ManufacturerRemarks
65313
K6835
Manufacturer Code:LOCAL
Supply Number:CoMat 08-015
Type:sp01
Supply Short Name:CoMat 08-015 RESIN
Supply Name:CoMat 08-015 RESIN
Specification Groups:
Doc NumberType
RENGEL SV.409 OMAT: 805
RENGEL SV.409 JCR-146
Suppliers:
ManufacturerRemarks
LOCAL
IE432
IE200
IAE77
K1007
k3504
Manufacturer Code:LOCAL
Supply Number:CoMat 08-016
Type:sp01
Supply Short Name:CoMat 08-016 HARDENER
Supply Name:CoMat 08-016 HARDENER
Specification Groups:
Doc NumberType
CRAYAMID 140 OMAT: 806
CRAYAMID 140 JCR-147
Suppliers:
ManufacturerRemarks
LOCAL
18598
IE200
k3504
K3713
K6835
Manufacturer Code:LOCAL
Tool Number:Brush
Tool Name:Brush
Manufacturer Code:LOCAL
Tool Number:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Manufacturer Code:LOCAL
Tool Number:Portable grinding equipment
Tool Name:Portablegrinding equipment
Manufacturer Code:LOCAL
Tool Number:Spatula
Tool Name:Spatula
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