TASK 75-24-49-300-027 LPT ACC Connector Air Tube - Weld Repair, Repair-027 (VRS4358)

DMC:V2500-A0-75-24-4901-01A-627A-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 75-24-49-300-027 LPT ACC Connector Air Tube - Weld Repair, Repair-027 (VRS4358)

Effectivity

FIG/ITEM

PART NO.

01-010

3A2335

01-010

3A2181

01-010

3A2316

Material of component

PART IDENT

IAE SYMBOL

MATERIAL

Tube connector, assembly

TiCu2/TiA16V4

General

Price and availability - none.

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

NOTE

For more equipment and materials necessary to do this repair, refer to SPM TASK 70-23-05-230-501, SPM TASK 70-11-06-300-503, SPM TASK 70-11-26-300-503 and SPM TASK 70-31-13-310-501.
Equivalent equipment may be used.

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Hand held stonesLOCALHand held stones
Tungsten inert gas system (TIG)LOCALTungsten inert gas system (TIG)

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-246 WELDING MATERIALLOCALCoMat 03-246
CoMat 03-247 WELDING MATERIALLOCALCoMat 03-247

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 75-24-49-110-087 Clean the Tube Connector

      1. Clean the areas around the cracks on two sides, if possible.

      1. Refer to SPM TASK 70-31-13-310-501.

      2. Dirty surfaces cause a decrease in weld strength.

    2. SUBTASK 75-24-49-350-108 Weld Up Repair Tube Connector

      NOTE

      Do the welding of titanium in a protective gas atmosphere to avoid impurities in weld seams, leading to premature cracking and reduction in fatigue strength.

      1. Weld up cracks, use tungsten inert gas method.

      1. Refer to Figure and SPM TASK 70-31-13-310-501.

      2. Use CoMat 03-246 WELDING MATERIAL to repair cracks on tubes and CoMat 03-247 WELDING MATERIAL on the housing.

      3. To repair cracks in joints between housing and tubes, use CoMat 03-246 WELDING MATERIAL.

      2. Weld up wear, use tungsten inert gas method.

      1. Refer to Figure and SPM TASK 70-31-13-310-501.

      2. Use CoMat 03-246 WELDING MATERIAL to repair cracks on sealing tubes.

    3. SUBTASK 75-24-49-220-140 Examine the Welds

      1. Examine the weld quality.

      1. Refer to SPM TASK 70-31-13-310-501 for acceptance standards.

    4. SUBTASK 75-24-49-230-115 Examine the Local repaired Areas for Cracks

      1. Do the test for cracks.

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

      2. No cracks are permitted.

      3. Use medium sensitivity level.

    5. SUBTASK 75-24-49-110-088-001 Clean the Tube Connector

      1. Clean the tube.

      1. Refer to SPM TASK 70-11-06-300-503.

    6. SUBTASK 75-24-49-110-088-002 Clean the Tube Connector

      1. Clean the tube connector.

      1. Refer to SPM TASK 70-11-26-300-503.

    7. SUBTASK 75-24-49-350-109 Dress the Welded Areas

      CAUTION

      DO NOT OVERHEAT THE AREAS WHICH ARE DRESSED.

      1. Dress the welds, which are too much to the initial contour.

      1. Use files or Hand held stones.

      2. No increased material is permitted on the touch surfaces.

      2. Dress welds smooth to original contour on sealing tubes. Polish weld area.

      1. Use files or Hand held stones.

      2. No increased material is permitted on the touch surfaces.

    8. SUBTASK 75-24-49-370-060 Heat Treatment after the Repair

      1. Heat treat the tube connector.

      1. Put the part in an oven for two hours at 887 deg F (475 deg C).

      2. Use argon or vacuum.

    9. SUBTASK 75-24-49-230-116 Examine the Repaired Area for Cracks

      1. Do a test for cracks.

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

      2. No cracks are permitted.

      3. Use medium sensitivity level.

    10. SUBTASK 75-24-49-110-089-001 Clean the Tube Connector

      1. Clean the tube.

      1. Refer to SPM TASK 70-11-06-300-503.

    11. SUBTASK 75-24-49-110-089-002 Clean the Tube Connector

      1. Clean the tube.

      1. Refer to SPM TASK 70-11-26-300-503.

    12. Figure: Tube Connector - Weld Up Cracks

    Tube Connector - Weld Up Cracks

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 03-246
Type:sp01
Supply Short Name:CoMat 03-246 WELDING MATERIAL
Supply Name:CoMat 03-246 WELDING MATERIAL
Specification Groups:
Doc NumberType
B.S.TA22 DTD 5133 TIMETAL 230 TI-P11 WL3.7124.1
Suppliers:
ManufacturerRemarks
LOCAL
U9025
K6835
0MRR3
Manufacturer Code:LOCAL
Supply Number:CoMat 03-247
Type:sp01
Supply Short Name:CoMat 03-247 WELDING MATERIAL
Supply Name:CoMat 03-247 WELDING MATERIAL
Specification Groups:
Doc NumberType
WL3.7164.1 AMS 4911 B.S.TA10 MIL-T-9046F TYPE III TI-P63
Suppliers:
ManufacturerRemarks
LOCAL
K6835
0MRR3
Manufacturer Code:LOCAL
Tool Number:Hand held stones
Tool Name:Hand held stones
Manufacturer Code:LOCAL
Tool Number:Tungsten inert gas system (TIG)
Tool Name:Tungsten inert gas system (TIG)