TASK 72-50-53-300-075 Turbine Exhaust Case (TEC) - Blend Repair On The No. 5 Bearing Oil Tube Boss And Cover Bolt Boss Crack, Repair-075 (VRS3632)

DMC:V2500-A0-72-50-5301-03A-649A-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 72-50-53-300-075 Turbine Exhaust Case (TEC) - Blend Repair On The No. 5 Bearing Oil Tube Boss And Cover Bolt Boss Crack, Repair-075 (VRS3632)

Effectivity

FIG/ITEM

PART NO.

21-300

2A1209-01

21-300

2A2620-01

21-300

2A3111-01

21-300

2A3183-01

21-300

2A3455-01

21-300

2A3183-101

21-300

2A4258-01

21-300

2A4263-01

Material of component

PART IDENT

SYMBOL

MATERIAL

Turbine Exhaust Case Assembly

Corrosion and heat resistant steel

General

Prices and Availability - Refer to IAE

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

NOTE

To identify the consumable materials, refer to the PCI

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Fluorescent Penetrant Inspection EquipmentLOCALFluorescent penetrant inspection equipment
Welding equipmentLOCALWelding equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)LOCALCoMat 06-064
CoMat 01-007 ETHYL ALCOHOL C2H5OH (DENATURED)LOCALCoMat 01-007
CoMat 02-099 LINT-FREE CLOTHLOCALCoMat 02-099
CoMat 03-378 WELDING WIRELOCALCoMat 03-378

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-53-350-163 Rout the Repair Area to Repair the Cracks

    1. Refer to Figure.

      2. Rout the repair area to repair.

        the cracks.

      1. Remove the minimum amount of material that is possible.

    3. If the wall thickness of the bosses.

      after routing is greater than or equal.

      to 0.095 in. (2.41 mm), do a blend repair.

      of the routed area Step.

    4. If the wall thickness of the bosses.

      after routing is less than or equal.

      to 0.095 in. (2.41 mm), do a weld repair.

      of the routed area Step.

    2. SUBTASK 72-50-53-350-164 Blend the Routed Repair Area Smooth

      CAUTION

      BLEND THE ROUTED REPAIR AREA SMOOTH ONLY IF THE MINIMUM WALL THICKNESS IS 0.095 IN. (2.41 MM) OR GREATER. MAKE SURE THAT DURING THE BLENDING YOU KEEP THE WALL THICKNESS AT 0.095 IN. (2.41 MM) OR GREATER.

      1. Blend the routed area smooth.

        and continuous. Blend to a 10 to 1.

        length to depth ratio.

      1. Use silicon-carbide or aluminum oxide abrasive.

        Make sure that during the blending you keep.

        the wall thickness at 0.095 in. (2.41 mm) or greater.

    3. SUBTASK 72-50-53-310-078 Weld Repair the Routed Repair Area to Keep the Minimum Wall thickness

      1. Examine the oil tube mating.

        diameters and/or the cover.

        bore mating diameters FIR.

      1. Record the minimum and the.

        maximum diameters to determine.

        if a weld repair would affect these diameters.

      3. Weld the routed area manually.

      1. Refer to the SPM TASK 70-31-02-310-501. Use CoMat 03-378 WELDING WIRE. Apply sufficient material to make sure you can blend to the adjacent surfaces.

      4. Blend the welding bead flush.

        to within 0.005 in. (0.127 mm) above.

        the adjacent surfaces.

      1. Use silicone-carbide or aluminum oxide abrasive. The welded area must be smooth and continuous.

    4. SUBTASK 72-50-53-230-110 Inspect for Cracks Using Fluorescent Penetrant Inspection

      1. Inspect for cracks.

      1. Do a local fluorescent penetrant inspection procedure. Refer to the SPM TASK 70-23-05-230-501. Use CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY).

    5. SUBTASK 72-50-53-370-085 Stress Relieve the Turbine Exhaust Case/Weld Repair Areas

      CAUTION

      KEEP THE TIME BETWEEN WELD REPAIR AND STRESS RELIEF TO A MINIMUM TO DECREASE THE POSSIBILITY OF CRACKS.

      1. Do a local or furnace.

        stress relieve.

      1. Refer to the SPM TASK 70-37-13-370-501. If furnace stress relief is used, remove the heat shields, 13 rear inner flange nut plates, 3 carbon seal flange nut plates, 19 bearing cover boss helical coil inserts, and 2 jumper tube boss helical coil inserts.

    6. SUBTASK 72-50-53-230-111 Inspect for Cracks Using Fluorescent Penetrant Inspection

      1. Inspect for cracks using local.

        fluorescent penetrant inspection if a.

        local stress relief was used.

        Inspect for cracks on all of the.

        turbine exhaust case if a furnace.

        stress relief was used.

      1. For a local fluorescent penetrant inspection, refer to the SPM TASK 70-23-05-230-501.

    7. SUBTASK 72-50-53-220-213 Inspect the Turbine Exhaust Case After the Repair

      1. Inspect the turbine exhaust case.

      1. Refer to TASK 72-50-53-200-003.

    8. 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

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial correction due to conversion

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 01-007
Type:sp01
Supply Short Name:CoMat 01-007 ETHYL ALCOHOL C2H5OH (DENATURED)
Supply Name:CoMat 01-007 ETHYL ALCOHOL C2H5OH (DENATURED)
Specification Groups:
Doc NumberType
PMC 9009 (PW REF)Reagent grade
MTH 133 (94%) (MTU REF)Reagent grade
Suppliers:
ManufacturerRemarks
LOCAL
K6835
IE441
24853
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
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:Fluorescent penetrant inspection equipment
Tool Name:Fluorescent Penetrant Inspection Equipment
Manufacturer Code:LOCAL
Tool Number:Welding equipment
Tool Name:Welding equipment