TASK 72-50-53-300-012 Turbine Exhaust Case (TEC) - Replace The Strut, Repair-012 (VRS5396)

DMC:V2500-A0-72-50-5301-05A-920A-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 72-50-53-300-012 Turbine Exhaust Case (TEC) - Replace The Strut, Repair-012 (VRS5396)

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

Before strut removal, hold the dimensional relationship between the inner and outer stand-up reference features to a minimum. This will prevent movement of the parts.

As necessary, remove any adjacent hardware, which will interfere with or be affected by the strut replacement such as tubing, mount rail bushings or nut plate details.

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
ScriberLOCALScriber
Hand-held cut-off wheelLOCALHand-held cut-off wheel

(or other suitable grinder)

Aluminum oxide rag wheelLOCALAluminum oxide rag wheel
Stainless steel wire brushLOCALStainless steel wire brush

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
Strut2A3834-01A/R
Strut2A3835-01A/R
Strut2A3836-01A/R

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-53-350-175 Scribe the Damaged Strut

    1. Refer to: Figure

      2. Put the exhaust case (01-001) on a bench. Scribe the damaged strut as follows:

        1. Scribe the cut line adjacent to the strut attachment welds at the strut leading edge and trailing edge.

        1. Refer to Figure.

          NOTE

          Make sure the line is scribed on the strut to be replaced, not on the strut stand-up.

      2. Use a straight-edge and scriber and connect the scribed lines to get a referenced cutting plane line.

    2. SUBTASK 72-50-53-350-176 Cut the Damaged Strut

      WARNING

      USE EYE PROTECTION WHEN YOU USE A CUT-OFF WHEEL OR GRINDER OR INJURY TO THE PERSON COULD OCCUR.

      CAUTION

      DO NOT REMOVE MORE THAN ONE STRUT AT A TIME.

      1. Cut the damaged strut along the scribed lines and remove the damaged strut.

      1. Use a hand-held cut-off wheel or other suitable grinder.

    3. SUBTASK 72-50-53-320-138 Machine the Unwanted Material

      1. Machine the unwanted material at strut cut planes to the initial lug dimensions.

      1. Refer to Figure.

    4. SUBTASK 72-50-53-320-139 Machine the Material to Fit the Replacement Strut

      1. Machine off the material from the outer diameter of the strut to fit the replacement strut.

      1. The gap between the fitted parts must not be more than 0.060 in. (1.524 mm).

        NOTE

        The replacement strut detail has been manufactured with approximately 0.040 in. (1.016 mm) additional material on the inner diameter. This material may or may not have to be removed for proper fit.

    5. SUBTASK 72-50-53-320-140 Polish the Surfaces to be Welded

      1. Polish the surfaces to be welded to give a good finish.

      1. Use an aluminum oxide rag wheel.

    6. SUBTASK 72-50-53-110-144 Clean Areas to be Welded

      1. Clean the areas to be welded.

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

    7. SUBTASK 72-50-53-310-082 Tack Weld the Strut

      1. Tack weld the strut in position 1.50 - 2.00 in. (38.1 - 50.8 mm) at each inner and outer stand-up.

      1. Refer to the SPM TASK 70-31-02-310-501.

    8. SUBTASK 72-50-53-350-177 Remove Clamping Tools

    1. Remove the clamping tools that are used to hold the case dimensional features from movement when the strut is removed.

    9. SUBTASK 72-50-53-110-145 Clean the Tack Welds

      1. Clean the tack welds.

      1. Use a stainless steel brush or aluminum oxide rag wheel.

    10. SUBTASK 72-50-53-350-178 Clean the Areas to be Welded

      1. Clean the areas to be welded.

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

    11. SUBTASK 72-50-53-350-179 Weld the Replacement Strut

      1. Weld the replacement strut to the stand-ups.

      1. Refer to the SPM TASK 70-31-02-310-501.

        Use the manual gas tungsten arc (TIG) method and CoMat 03-378 WELDING WIRE.

        Refer to Figure.

        NOTE

        These welds must blend and be continuous.

    12. SUBTASK 72-50-53-350-180 Replace Other Damaged Struts

      1. Replace any other damaged struts as necessary, one at a time.

      1. Use the same procedure that was used above.

    13. SUBTASK 72-50-53-230-120 Do a Fluorescent Penetrant Inspection

      1. Optional: Do a fluorescent penetrant inspection of the weld areas.

    14. SUBTASK 72-50-53-370-090 Do a Local Stress Relief

      1. Do a local stress relief to the welded areas.

      1. Refer to the SPM TASK 70-37-13-370-501.

        Use cycle 6A.

        NOTE

        Furnace stress relieve permitted but subsequent full fluorescent penetrant inspection is necessary.

    15. SUBTASK 72-50-53-230-121 Do a Fluorescent Penetrant Inspection

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

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

        No cracks are permitted.

        NOTE

        Fluorescent penetrant inspection of the entire case is necessary if full stress relieve was used.

    16. SUBTASK 72-50-53-350-190 Identify the Repair

      1. Mark VRS5396 adjacent to the part number.

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

        Use vibration peening or engraving method.

        Remove metal lifted by the marking.

    17. SUBTASK 72-50-53-350-181 Close Up

    1. If necessary, install any tubing, mount rail bushings or nut-plate detail parts that were removed to permit the welding or local stress relieve.

    2. Make sure all other engine manual requirements are met.

    18. 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

    Figure: Repair Details and Dimensions

    Sheet 5

    Legend
    Repair Details and Dimensions

    Sheet 5

    Close

    Figure: Repair Details and Dimensions

    Sheet 6

    Legend
    Repair Details and Dimensions

    Sheet 6

    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
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:Hand-held cut-off wheel
Tool Name:Hand-held cut-off wheel
Manufacturer Code:LOCAL
Tool Number:Scriber
Tool Name:Scriber
Manufacturer Code:LOCAL
Tool Number:Stainless steel wire brush
Tool Name:Stainless steel wire brush