TASK 72-41-23-300-027 HPC Rear Outer Case - Forward Inner Flange Pin Holes Weld Repair-027 (VRS9281)

DMC:V2500-A0-72-41-2301-02A-627A-C|Issue No:001.00|Issue Date:2020-02-01

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 72-41-23-300-027 HPC Rear Outer Case - Forward Inner Flange Pin Holes Weld Repair-027 (VRS9281)

Effectivity

FIG/ITEM

PART NO.

02-400

6A2949

02-400

6A3557

02-400

6A4154

02-400

6A5495

02-400

6A5682

02-400

6A8162

02-400

6B1427

Material of component

PART IDENT

MATERIAL

HPC Rear Outer Case

Corrosion Resistant Steel

General

This repair must only be done when the instruction to do so is given in 72-41-23 Repair, VRS6278 TASK 72-41-23-300-021 (REPAIR-021).

Preliminary Requirements

Pre-Conditions

Action/ConditionData Module/Technical Publication
Make sure that all cleaning and inspection procedures are performed before this repair.

Support Equipment

NONE

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-181 WELDING WIRE 12% Cr. STEELLOCALCoMat 03-181

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-23-350-143 Remove Surface Damage From Forward Inner Flange Pin Hole(s)

    1. Blend to remove wear and prepare the area for weld. Refer to SPM TASK 70-35-03-300-501. See Figure.

    2. Do not increase the diameter of the pin hole(s) beyond 0.260 in. (6.60 mm).

    2. SUBTASK 72-41-23-110-107 Chemically Clean

    1. Locally clean the repair area(s). Refer to SPM TASK 70-11-26-300-503.

    3. SUBTASK 72-41-23-350-144 Remove Oxides And Prepare For Weld

    1. Use a rotary austenitic stainless steel wire brush or silicon carbide abrasive wheels to remove oxides and prepare the repair area(s) for weld. Refer to SPM TASK 70-31-02-310-501-001.

    4. SUBTASK 72-41-23-110-108 Chemically Clean

    1. Locally clean the repaired area(s). Refer to SPM TASK 70-11-26-300-503.

    5. SUBTASK 72-41-23-310-001 Weld the HPC Rear Outer Case Forward Flange Pin Hole(s)

      1. Surface or plug weld the damaged pin hole(s). Refer to SPM TASK 70-31-02-310-501-001 and TASK 70-31-02-310-501-008. See Figure.

      2. Use the Manual Gas Tungsten Arc Weld (GTAW-MA) method.

    6. SUBTASK 72-41-23-350-145 Do A Local Heat Treat

    1. Do a locally heat treat at the repaired area(s). Refer to SPM TASK 70-31-02-310-501-001.

    2. Heat to 1115 deg F - 1145 deg F (602 deg C - 618 deg C) for 58 to 62 minutes in air or inert atmosphere.

    7. SUBTASK 72-41-23-220-222 Visually Examine

    1. Do a visual inspection of the repaired area(s) for distortion and discoloration. Refer to SPM TASK 70-31-02-310-501-001.

    8. SUBTASK 72-41-23-350-146 Do A Hardness Check on the HPC Rear Outer Case

      1. Do a hardness check on the surfaces adjacent to the welded area.

      1. Hardness must be 321-352 HB (334-366 Vickers) or equivalent.

    9. SUBTASK 72-41-23-320-001 Machine Forward Inner Flange Pin Hole(s)

    1. Machine to restore the pin location hole(s) to the limits shown in Figure and Figure.

    10. SUBTASK 72-41-23-350-147 Restore the Casing Contour

    1. Blend weld repaired area(s) flush to or 0.002 in. (0.050 mm) maximum below, adjacent non-repair flange surfaces. Refer to SPM TASK 70-35-03-300-501.

    11. SUBTASK 72-41-23-110-109 Chemically Clean

    1. Clean the part. Refer to SPM TASK 70-11-03-300-503.

    12. SUBTASK 72-41-23-230-252 Perform A Fluorescent Penetrant Inspection

      1. Do a fluorescent penetrant inspection by one of the following methods:

      1. Do a local fluorescent penetrant inspection at the repair area(s), high sensitivity. No crack(s) permitted. Refer to SPM TASK 70-23-05-230-501.

      2. Do a full part fluorescent penetrant inspection. Refer to SPM TASK 70-23-03-230-501.

    13. SUBTASK 72-41-23-220-223 Visually Examine

    1. Do a visual inspection of the repaired area(s). Refer to SPM TASK 70-31-02-310-501-001.

    14. SUBTASK 72-41-23-220-224 Dimensionally Examine

    1. Do a dimensional inspection of the repaired area(s). See Figure and Figure.

    15. SUBTASK 72-41-23-350-148 Identify the Repair

    1. Permanently mark the repaired part with "VRS9281" adjacent to the assembly part number using vibration peen method. Refer to SPM TASK 70-09-00-400-501.

    16. Figure: HPC Rear Outer Case, Forward Inner Flange Pin Holes Weld Repair, Repair-027 (VRS9281)

    HPC Rear Outer Case, Forward Inner Flange Pin Holes Weld Repair, Repair-027 (VRS9281)

    Legend
    1

    HPC Rear Outer Case, Forward Inner Flange Pin Holes Weld Repair, Repair-027 (VRS9281)

    1. 23.897 Inch (607.00 mm) Basic Dimension.

    2. 25.787 Inch (655.00 mm) Basic Dimension. Reference.

    3. 0.500 Degrees, Basic Dimension.

    4. 0.260 Inch (6.60 mm) Maximum Diameter Before Weld.

    Close

    Figure: HPC Rear Outer Case, Forward Inner Flange Pin Holes Weld Repair, Repair-027 (VRS9281)

    HPC Rear Outer Case, Forward Inner Flange Pin Holes Weld Repair, Repair-027 (VRS9281)

    Legend
    2

    HPC Rear Outer Case, Forward Inner Flange Pin Holes Weld Repair, Repair-027 (VRS9281)

    1. 0.158 - 0.165 Inch (4.00 - 4.20 mm).

    2. 0.2359 - 0.2366 Inch (5.992 - 6.010 mm), Diameter.

    3. 0.205 - 0.212 Inch (5.20 - 5.40 mm).

    4. 0.016 - 0.031 Inch (0.40 - 0.80 mm).

    5. 28 - 32 Degrees

    6. 0.2697 - 0.2795 Inch (6.850 - 7.100 mm), Diameter.

    NOTE: Break Sharp Edge 0.004 - 0.020 Inch (0.10 - 0.50 mm).

    Close

Requirements After Job Completion

Follow-On Conditions

Action/ConditionData Module/Technical Publication
Locally touch-up missing surface protection as necessary including identity marking.TASK 72-41-23-300-003
Replace the removed pin(s).TASK 72-41-23-300-021
Change Type:

Added new repair. (17VG023)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 03-181
Type:sp01
Supply Short Name:CoMat 03-181 WELDING WIRE 12% Cr. STEEL
Supply Name:CoMat 03-181 WELDING WIRE 12% Cr. STEEL
Specification Groups:
Doc NumberType
MSRR9500/10JETHETE M190 AMS 5823 AMS 5822
OMAT:3/54JETHETE M190 AMS 5823 AMS 5822
Suppliers:
ManufacturerRemarks
LOCAL
IE306
2R602
IE441