TASK 79-21-49-300-004 Engine Pressure Oil Tubes - Repair The End Fittings, Repair-004 (VRS2940)

DMC:V2500-A0-79-21-4900-00A-657A-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 79-21-49-300-004 Engine Pressure Oil Tubes - Repair The End Fittings, Repair-004 (VRS2940)

Effectivity

FIG./ITEM

PART NO.

17-100

740-5767-507

17-100

740-5767-509

17-500

740-5769-509

17-500

740-5769-511

18-100

740-5774-505

18-100

740-5774-507

Material of components

DESCRIPTION

RR SYMBOL

MATERIAL

Oil pressure tube

-

Stainless steel

General

This repair can be done on the end fittings of the tube during overhaul.

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.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Smooth flat fileLOCALSmooth flat file
Thread tapLOCALThread tap

0.4375-20 UNJF-3B

Thread tapLOCALThread tap

0.5000-20 UNJF-3B

DieLOCALDie

0.4375-20 UNJF-3A

Thread gageLOCALThread gage

(A GO - NO GO gage to test the size of thread on the thread taps/dies listed above)

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-076 METHYL ETHYL KETONELOCALCoMat 01-076
CoMat 02-099 LINT-FREE CLOTHLOCALCoMat 02-099
CoMat 02-102 BRUSH, PAINTLOCALCoMat 02-102
CoMat 10-035 COMPOUND, METAL CUTTING,WATER-TYPE0AM53CoMat 10-035

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 79-21-49-110-053 Clean the End Fittings

      1. Clean the end fittings

      1. Refer to Cleaning-000 TASK 79-21-49-100-400.

    2. SUBTASK 79-21-49-350-052 Repair the Screw Threads

      1. CAUTION

        DO NOT DAMAGE THE SEALING FACES OF THE END FITTINGS. IT CAN MAKE THE TUBE UNSERVICEABLE.

        Examine the screw threads.

      1. If more than three turns of the screw threads are damaged, then discard the tube assembly.

      2. Repair the screw threads.

      1. Refer to Figure for the applicable thread tap/dies.

      2. Use the applicable thread tap/die and the CoMat 10-035 COMPOUND, METAL CUTTING,WATER-TYPE.

      3. If the thread tap does not turn easily, discard the tube assembly.

      3. Make sure that the dimensions of the screw threads are correct.

      1. Use the applicable thread gage to measure the size of the threads.

      2. The GO end of the gage must go in the end fitting.

      3. The NO-GO end of the gage must not go in the end fitting.

      4. If the No-GO end goes in, discard the tube assembly.

    3. SUBTASK 79-21-49-350-053 Repair the Wrench Flats

      1. Make the wrench flats flat and smooth.

      1. Use the smooth flat file to remove all burrs and scratches.

      2. Measure across the flats at each of three positions.

      1. Refer to Figure for the dimension for each part number.

      2. Each pair of flats must be parallel to each other.

      3. If the dimension is not correct or the flats are not parallel, discard the tube assembly.

      3. Clean the end fitting.

      1. Do again Step

    4. SUBTASK 79-21-49-220-054 Examine the End Fitting

      1. Examine the end fitting.

      1. Refer to Inspection-000 TASK 79-21-49-200-100.

    5. SUBTASK 79-21-49-230-052 Examine the End Fitting

      1. Do a dye-penetrant test on the end fitting.

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

    6. SUBTASK 79-21-49-780-053 Pressure Test the Tube

      1. Do a pressure test on the tube..

      1. Refer to Testing-001 TASK 79-21-49-700-101.

    7. SUBTASK 79-21-49-850-053 Put the Repair Scheme Number on the Tube

      1. Mark the repair scheme number VRS2940 on the tube adjacent to the part number using the electro-etch method..

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

    8. Figure: Part Numbers and Applicable Taps/Dies

    Part Numbers and Applicable Taps/Dies

    Figure: Part Numbers and Across-Flats Dimensions

    Part Numbers and Across-Flats 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:LOCAL
Enterprise Name:LOCALLY SUPPLIED
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: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:LOCAL
Supply Number:CoMat 02-102
Type:sp01
Supply Short Name:CoMat 02-102 BRUSH, PAINT
Supply Name:CoMat 02-102 BRUSH, PAINT
Specification Groups:
Doc NumberType
PAINT-BRUSH
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:0AM53
Supply Number:CoMat 10-035
Type:sp01
Supply Short Name:CoMat 10-035 COMPOUND, METAL CUTTING,WATER-TYPE
Supply Name:CoMat 10-035 COMPOUND, METAL CUTTING,WATER-TYPE
Specification Groups:
Doc NumberType
DELETED
Suppliers:
ManufacturerRemarks
0AM53
Manufacturer Code:LOCAL
Tool Number:Die
Tool Name:Die
Manufacturer Code:LOCAL
Tool Number:Smooth flat file
Tool Name:Smooth flat file
Manufacturer Code:LOCAL
Tool Number:Thread gage
Tool Name:Thread gage
Manufacturer Code:LOCAL
Tool Number:Thread tap
Tool Name:Thread tap