TASK 72-50-53-300-076 Turbine Exhaust Case (TEC) - Add Drain Holes On The Outer Case, Repair-076 (VRS3655)

DMC:V2500-A0-72-50-5301-00A-664A-C|Issue No:002.00|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 72-50-53-300-076 Turbine Exhaust Case (TEC) - Add Drain Holes On The Outer Case, Repair-076 (VRS3655)

Effectivity

FIG/ITEM

PART NO.

01-001

4A8014

01-001

4A8025

Material of component

PART IDENT

SYMBOL

MATERIAL

Turbine exhaust case

Corrosion and heat resistant steel

General

Price and Availability - none

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Workshop inspection equipmentLOCALWorkshop inspection equipment
DrillLOCALDrill
Aluminum oxide rag wheelLOCALAluminum oxide rag wheel
Welding equipmentLOCALWelding equipment
Fluorescent Penetrant Inspection EquipmentLOCALFluorescent penetrant inspection equipment
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-378 WELDING WIRELOCALCoMat 03-378
CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)LOCALCoMat 06-064

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
4 offPN 768748
4 offPN 768749

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-53-320-125 Install Drain Holes in the Outer Case at Struts No 4, 7, 8 and 10

      1. Drill holes in the outer case wall.

      1. Drill 0.374-0.376 in (9.50-9.55 mm) diameter holes. See Figure and Figure for locations and dimensions.

        Let fluid in the strut drain.

      2. Machine the outer case surface if necessary to remove steps.

      1. Remove steps or incorporate a 1.240-1.260 in (31.50-32.00 mm) diameter recess. See Figure.

      3. Prepare the surface of the washers, plugs and outer case.

      1. Polish the parts with an aluminum oxide rag wheel or equivalent. A smooth surface finish is necessary for weld attachment.

    2. SUBTASK 72-50-53-110-130 Clean the Areas to be Welded

      1. Clean the areas to be welded.

      1. Refer to the SPM TASK 70-11-26-300-503. Areas must be clean and dry from drained fluid before welding.

    3. SUBTASK 72-50-53-310-079 Weld the Washers to the Outer Case

      1. Weld the washers to the outer case.

      1. Refer to the SPM TASK 70-31-13-310-501. Use the manual gas tungsten arc method and CoMat 03-378 WELDING WIRE. See Figure.

      2. Fillet weld the plugs to the washers.

      1. Refer to the SPM TASK 70-31-13-310-501. Use the manual gas tungsten arc method and CoMat 03-378 WELDING WIRE. Refer to Figure for location and dimensions.

    4. SUBTASK 72-50-53-370-086 Locally Stress-Relieve the Repair Areas

      1. Locally stress-relieve the repaired areas.

      1. Refer to the SPM TASK 70-37-12-370-501, Cycle 6.

    5. SUBTASK 72-50-53-230-113 Do a Fluorescent Penetrant Inspection of the Repaired Areas

      1. Do a fluorescent penetrant inspection of the repaired areas.

    6. SUBTASK 72-50-53-350-165 Install the Hardware

    1. Install the hardware you removed to permit welding or stress-relief if necessary.

    7. SUBTASK 72-50-53-320-126 Install Drain Holes in the Outer Case at Struts No 3, 6 and 11

      1. Drill holes in the outer case wall.

      1. Drill 0.311-0.313 in (7.90-7.95 mm) diameter holes. Refer to Figure and Figure for locations and dimensions.

        Let fluid in the strut drain.

    8. SUBTASK 72-50-53-110-131 Clean the Areas to be Welded

      1. Clean the areas to be welded.

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

        Areas must be clean and dry from drained fluid before welding.

    9. SUBTASK 72-50-53-310-080 Plug Weld the Holes

      1. Plug weld the holes.

      1. Refer to the SPM TASK 70-31-13-310-501. Use the manual gas tungsten arc method and CoMat 03-378 WELDING WIRE. See Figure.

    10. SUBTASK 72-50-53-370-087 Locally Stress-Relieve the Repaired Areas

      1. Locally stress-relieve the repaired areas.

      1. Refer to the SPM TASK 70-37-12-370-501, Cycle 6.

    11. SUBTASK 72-50-53-320-127 Blend the Weld Flush

      1. Blend the weld flush to 0.010 in (0.254 mm) above the parent material if necessary.

      1. Do not remove parent material.

    12. SUBTASK 72-50-53-230-114 Do a Fluorescent Penetrant Inspection of the Repaired Areas

      1. Do a fluorescent penetrant inspection of the repaired areas.

    13. SUBTASK 72-50-53-350-166 Install the Hardware

    1. Install the hardware you removed to permit welding or stress-relief if necessary.

    14. SUBTASK 72-50-53-320-128 Identify the Repair

      1. Re-identify the part number.

      1. Make a line through the existing "-01", then mark "-001" on the turbine exhaust case adjacent to the part number. Refer to the SPM TASK 70-09-00-400-501. Use the vibration peen method.

        NOTE

        Do not mark the part again if the part number has been previously identified to "-001".

      2. Mark the repair number VRS3655 on the turbine exhaust case adjacent to the part number.

      1. Refer to the SPM TASK 70-09-00-400-501. Use the vibration peen method.

        NOTE

        If the VRS repair number is marked on the part, do not mark the part again.

    15. SUBTASK 72-50-53-320-129 Remove and Replace Plugs at Struts No 4, 7, 8 and 10 for Drainage

      1. Remove the plug fillet welds.

      1. Machine the three fillet welds on each plug.

        Keep the removal of plug and washer material to a minimum.

      2. Remove the four plugs.

      1. Let any fluid in the struts drain.

    16. SUBTASK 72-50-53-110-132 Clean the Areas to be Welded

      1. Clean the areas to be welded.

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

        Areas must be clean and dry from drained fluid before welding.

    17. SUBTASK 72-50-53-310-081 Fillet Weld the Plugs to the Washers

      1. Fillet weld the plugs to the washers.

      1. You can use the old plugs again if they have no damage.

        Refer to the SPM TASK 70-31-13-310-501. Use the manual gas tungsten arc method and CoMat 03-378 WELDING WIRE. Refer to Figure.

    18. SUBTASK 72-50-53-230-115 Do a Fluorescent Penetrant Inspection of the Repaired Areas

      1. Do a fluorescent penetrant inspection of the repaired areas.

    19. SUBTASK 72-50-53-350-167 Install the Hardware

    1. Install the hardware you removed to permit welding or stress-relief if necessary.

    20. Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Sheet 2

    Legend
    Repair Details and Dimensions

    Sheet 2

    Close

    Figure: Repair Details and Dimensions

    Sheet 3

    Legend
    Repair Details and Dimensions

    Sheet 3

    Close

    Figure: Repair Details and Dimensions

    Sheet 4

    Legend
    Repair Details and Dimensions

    Sheet 4

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial correction due to conversion

Link not Found
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Link not Found
Link not Found
Manufacturer Code:LOCAL
Supply Number:CoMat 03-378
Type:sp01
Supply Short Name:CoMat 03-378 WELDING WIRE
Supply Name:CoMat 03-378 WELDING WIRE
Specification Groups:
Doc NumberType
AMS 5817GREEK ASCOLOY
Suppliers:
ManufacturerRemarks
LOCAL
2R602
55596
58401
Manufacturer Code:X222X
Supply Number:CoMat 06-064
Type:sp01
Supply Short Name:CoMat 06-064FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Supply Name:CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐064 letter suffix material with other CoMat 06‐064 letter suffix materials.Where CoMat 06‐064 is specified with no suffix, use one of the CoMat 06‐064 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Tool Number:Aluminum oxide rag wheel
Tool Name:Aluminum oxide rag wheel
Manufacturer Code:LOCAL
Tool Number:Drill
Tool Name:Drill
Manufacturer Code:LOCAL
Tool Number:Fluorescent penetrant inspection equipment
Tool Name:Fluorescent Penetrant Inspection Equipment
Link not Found
Manufacturer Code:LOCAL
Tool Number:Welding equipment
Tool Name:Welding equipment
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment