TASK 36-21-49-300-001 Bleed Air Pressure Indicating Air Tubes - Repair The End Fittings, Repair-001 (VRS2930)

DMC:V2500-A0-36-21-4900-00A-657A-C|Issue No:003.00|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 36-21-49-300-001 Bleed Air Pressure Indicating Air Tubes - Repair The End Fittings, Repair-001 (VRS2930)

Effectivity

FIG/ITEM

PART NO.

01-100

740-5089-501

01-100

740-5089-503

01-100

740-5089-505

01-100

740-5645-505

01-100

745-5645-503

01-100

745-5645-505

01-500

740-5644-503

01-500

740-5644-505

01-500

745-5644-501

01-500

745-5644-503

01-500

745-5644-505

02-100

740-5086-501

02-100

740-5074-507

02-110

740-5092-501

02-500

740-5093-501

02-500

740-5093-503

02-500

745-5093-501

02-725

745-5097-501

02-725

745-5097-503

Material of component

DESCRIPTION

RR SYMBOL

MATERIAL

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 SPM.

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
DieLOCAL

0.5000-20 UNJF-3A

DieLOCAL

0.4375-20 UNJF-3A

DrillLOCAL

0.0625 in. (1.59 mm)

Smooth flat fileLOCAL
Thread gageLOCAL

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

Thread tapLOCAL

0.4375-20 UNJF-3B

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-TYPELOCALCoMat 10-035

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 36-21-49-110-052 Clean the End Fittings

      1. Clean the end fittings

      1. Refer to Cleaning-000 TASK 36-21-49-100-101.

    2. SUBTASK 36-21-49-350-051 Repair the Screw Threads

      CAUTION

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

      1. Visually 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. Use the applicable thread tap/die and the CoMat 10-035 COMPOUND, METAL CUTTING,WATER-TYPE metal cutting compound. If the thread tap does not turn easily, discard the tube assembly.

      2. Refer toFigure for the thread taps/dies to be used on each part number.

      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. The GO end of the gage must go in the end fitting. The NO-GO end of the gage must not go in the end fitting. If the NO-GO end goes in, discard the tube assembly.

    3. SUBTASK 36-21-49-350-052 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 the distance across the flats at each of three positions.

      1. Each pair of flats must be parallel to each other. If the distance is not correct or the flats are not parallel, discard the tube assembly. Refer to Figure for the across-flats distance for each part number.

      3. Clean the end fitting

      1. Do again Step.

    4. SUBTASK 36-21-49-220-067 Examine the End Fitting

      1. Visually examine the end fitting

      1. Refer to Inspection-000 TASK 36-21-49-200-100.

    5. SUBTASK 36-21-49-350-054 Repair a Lock-wire Hole

      1. Make the edges of the damaged hole smooth

      1. Do again Step.

      2. Drill a new lock-wire hole

      1. Drill a new hole through the two wrench flats at the next position away from the damaged hole. Use a 0.0625 in. (1.59 mm) diameter drill. Make sure the angle between the nut and lock-wire is correct.

    6. SUBTASK 36-21-49-230-055 Examine the End Fitting

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

    7. SUBTASK 36-21-49-780-054 Pressure Test the Tube

      1. Do a pressure test on the tube.

    8. SUBTASK 36-21-49-850-051 Put the Repair Scheme Number on the Tube

      1. Mark the repair scheme number VRS2930 on the tube adjacent to the part number with the electro-etch method.

    9. 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:

Revised figures. (Editorial)

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
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