TASK 36-11-49-300-001 Bleed Air Ducts - Blend Repair Surface Damage, Repair-001 (VRS2863)

DMC:V2500-A0-36-11-4900-00A-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 36-11-49-300-001 Bleed Air Ducts - Blend Repair Surface Damage, Repair-001 (VRS2863)

Effectivity

FIG/ITEM

PART NO.

01-100

740-5060-505

01-300

740-5051-503

01-300

740-5051-505

01-300

740-5051-507

01-500

740-5059-503

01-500

740-5059-505

Material of component

DESCRIPTION

RR SYMBOL

MATERIAL

Bleed air duct

Inconel 625

General

This repair can be done on the bleed air duct during overhaul.

Price and availability - not applicable.

Related repairs - not applicable.

The practices and processes referred to in the procedures by the TASK numbers are in the Standard Practices and Processes Manual (SPM).

NOTE

To identify the consumable material refer to PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

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 36-11-49-220-062 Examine the Area for Repair

      1. Mark the repair area of the duct.

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

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

      1. Use the micrometer and record the diameter.

    2. SUBTASK 36-11-49-350-051 Repair the Area of Damage

      1. Remove the damage.

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

    3. SUBTASK 36-11-49-110-053 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.

      2. Make the area clean with a clean piece of lint-free cloth before the fluid dries.

    4. SUBTASK 36-11-49-220-063 Examine the Repaired Area

      1. Visually examine the repaired area.

      1. Refer to Inspection-000 TASK 36-11-49-200-100.

      2. Make sure that the repaired area is smooth and has no scratches.

      3. Make sure that the repaired area has no sudden changes in thickness.

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

      1. Refer to Figure.

      2. Make sure that the deepest area of the repair is measured.

      3. Record the diameter.

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

      1. Refer to Figure (Dimension 'X') for items 01-100 and 01-500.

      2. Compare the external diameter measurement (after the repair) with the measurement made before the repair.

      3. For the ducts repaired on one side, the difference between the measurements must not be more than 0.006 in. (0.152 mm).

      4. For the ducts repaired all around their circumference, the measurements must not be more than 0.012 in. (0.305 mm).

      5. Refer to Figure (Dimension 'X') for item 01-300. For the ducts repaired on one side, the difference between the measurements must not be more than 0.025 in. (0.635 mm).

      6. For the ducts repaired all around their circumference, the measurements must not be more than 0.050 in. (1.27 mm).

      7. Discard any ducts that are not in these limits.

    5. SUBTASK 36-11-49-780-055 Pressure Test the Repaired Duct

      1. Do a pressure test on the repaired duct.

      1. Refer to Testing - 001 TASK 36-11-49-700-101.

    6. SUBTASK 36-11-49-850-051 Put the Repair Scheme Number on the Duct

      1. Mark the repair scheme number VRS2863 on the duct, adjacent to the part number, with the electro-etch method.

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

    7. Figure: Bleed Air Duct Repair Area

    Bleed Air Duct 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