TASK 71-73-48-300-003 Drain Tubes - Blend Repair Surface Damage, Repair-003 (VRS2889)

DMC:V2500-A0-71-73-4800-00A-649A-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 71-73-48-300-003 Drain Tubes - Blend Repair Surface Damage, Repair-003 (VRS2889)

Effectivity

FIG/ITEM

PART NO.

01-100

740-5673-501

01-100

740-5673-503

01-100

740-5704-505

01-100

740-5704-507

01-500

740-5698-505

01-500

740-5698-507

01-500

740-5698-509

02-100

740-5696-505

02-100

740-5696-507

02-500

740-5792-513

02-500

740-5792-515

02-500

740-5792-517

03-100

740-5265-505

03-500

745-5267-501

03-500

740-5267-505

03-500

740-5267-507

Material of component

DESCRIPTION

RR SYMBOL

MATERIAL

Drain tube

Stainless steel

General

This repair can be done on the drain tubes 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
MicrometerLOCALMicrometer

ball anvil type

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-076 METHYL ETHYL KETONELOCALCoMat 01-076
CoMat 02-099 LINT-FREE CLOTHLOCALCoMat 02-099

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 71-73-48-220-075 Examine the Area for Repair

      1. Mark the repair area of the tube.

      1. The repair area of the tube must measure a minimum dimension of 10 times the depth of the damage.

      2. Measure the external diameter of the tube at the damaged area.

      1. Use the micrometer and record the diameter.

    2. SUBTASK 71-73-48-350-051 Repair the Area of Damage

      1. Remove the damage.

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

    3. SUBTASK 71-73-48-110-057 Clean the Repaired Area

      WARNING

      DO NOT GET THE CLEANING FLUID ON YOUR SKIN OR IN YOUR EYES. PUT ON PROTECTIVE CLOTHING, GLOVES, GOGGLES AND A MASK. USE THE FLUID IN A WELL VENTILATED AREA. DO NOT BREATHE THE GAS. IF YOU GET THE FLUID ON YOUR SKIN OR IN YOUR EYES, FLUSH IT AWAY WITH WATER. GET MEDICAL AID IF YOUR SKIN OR EYES BECOME IRRITATED.

      1. Clean the repaired area.

      1. Use the CoMat 01-076 METHYL ETHYL KETONE and the CoMat 02-099 LINT-FREE CLOTH. Make the area clean with a clean piece of lint-free cloth before the fluid dries.

    4. SUBTASK 71-73-48-220-076 Examine the Repaired Area

      1. Examine the repaired area.

      1. Make sure that the repaired area is smooth and has no scratches. Make sure that the repaired area has no sudden changes in thickness.

      2. Measure the external diameter of the tube at the repaired area.

      1. Refer to Figure. Use the Micrometer. Make sure that the deepest area of the repair is measured. Record the diameter.

      3. Calculate the wall thickness of the tube in the repaired area.

      1. Refer to Figure (Dimension 'X'). Compare the external diameter measurement (after the repair) with the measurement made before the repair. The difference between the measurements must not be more than 0.003 in. (0.0762 mm). If more than 0.003 in. (0.0762 mm) discard the tube.

    5. SUBTASK 71-73-48-780-053 Pressure Test the Repaired Tube

      1. Do a pressure test on the repaired tube.

      1. Refer to Testing-001 TASK 71-73-48-700-101.

    6. SUBTASK 71-73-48-850-051 Put the Repair Scheme Number on the Tube

      1. Mark the repair scheme number VRS2889 on the tube adjacent to the part number with the electro-etch method.

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

    7. Figure: Drain tube repair area

    Drain tube repair area

Requirements After Job Completion

Follow-On Conditions

NONE
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
Tool Number:Micrometer
Tool Name:Micrometer