TASK 72-45-00-300-002 HPT Stage 2 Air Seal - Blend Repair, Repair-002 (VRS3208)

DMC:V2500-A0-72-45-0012-00A-649A-C|Issue No:005.00|Issue Date:2021-02-01

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 72-45-00-300-002 HPT Stage 2 Air Seal - Blend Repair, Repair-002 (VRS3208)

Effectivity

FIG/ITEM.

PART NO.

01-080

2A4157

01-080

2A4196

General

This repair is not necessary for surface damage up to 0.001 in. (0.025 mm) maximum in depth.

The maximum rotary equipment speed is 18000 RPM.

Material of component

PART IDENT

SYMBOL

MATERIAL

Stage 2 HPT Air Seal

-

Nickel alloy

Preliminary Requirements

Pre-Conditions

Action/ConditionData Module/Technical Publication
Make sure that the cleaning and inspection procedures are done before this repair.
Refer to Cleaning-000TASK 72-45-00-100-000
Refer to Inspection-000TASK 72-45-00-200-000

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

CAUTION

USE THIS REPAIR FOR THE DAMAGED PARTS WHICH HAVE LESS THAN THEIR LIFE CYCLE LIMIT. THIS REPAIR WILL NOT EXTEND THE STAGE 2 HPT AIR SEAL LIFE CYCLE. DO NOT REPAIR AN AIR SEAL THAT HAS A CRACK OR ANY INDICATION THAT IT IS NOT CLEARLY THE RESULT OF LOCAL DAMAGE SUCH AS DENTS, NICKS, SCRATCHES AND CORROSION PITS. IF CRACKS OR OTHER UNUSUAL CONDITIONS ARE FOUND BY THE PENETRANT TEST OR VISUAL INSPECTION, REJECT THE PART.

Procedure

    1. Repair Facilities

    1. The Source Demonstration requirements of this repair means that any facility not authorized to accomplish this repair either utilize the Authorized Repair Vendors listed below or contact IAE Manager Maintenance Operations to determine if a qualification program can be initiated at their facility.

      IAE International Aero Engines AG

      400 Main Street

      M/S 121-10

      East Hartford CT 06118

      U.S.A.

      Attn: Manager Technical Services

    2. Authorized Repair Vendors for the Shotpeen section of Repair VRS3208 are listed below:

      Pratt and Whitney Global Service Partners

      East Hartford Repair Operations (GSP-EHRO)

      400 Main Street, Well No.14 - Mail Stop 117-62

      East Hartford, CT 06108

      USA

      Tel: (860) 557-2646

      Fax: (860) 557-2647

      Metal Improvements Company Inc. (MIC)

      145 Addison Road

      P. O. Box 487

      Windsor, CT 06095

      USA

      Tel: (860) 688-6201

      Fax: (860) 285-8809

      MTU Maintenance Gmbh

      Airport Hannover

      Muenchner Strasse 31

      D-30855 Langenhagen

      Germany

      Tel: 49 511 7806 0

      Fax: 49 511 7806 111

      IHI Corporation

      229 Tonogaya,

      Mizuho-Machi Nishitama-Gun

      Tokyo 190-1297

      Japan

      Tel: 81-42-568-7362

      Fax: 81-42-568-7566

      ATTN: Program Manager, V2500

      PRATT AND WHITNEY AIR NEW ZEALAND SERVICES

      PO Box 14005

      634 Memorial Avenue

      Christchurch International Airport

      Christchurch 8053

      NEW ZEALAND

    3. The designation by IAE of an authorized repair vendor indicates that the repair vendor has demonstrated the necessary capability to enable it to carry out the listed repair work. However, IAE makes no warranties of representations concerning the qualifications or quality standards of the repair vendors to carry out the repair work, and accepts no responsibility whatsoever for any work that may be carried out by a repair vendor, other than when IAE is listed as the repair vendor. Authorized repair vendors do not act as agents or representatives of IAE.

    2. SUBTASK 72-45-00-350-052-001 Blend the Stage 2 HPT Air Seal (Rotary Method)

      WARNING

      PUT ON EYE PROTECTION WHEN YOU OPERATE THE ROTARY EQUIPMENT. DISCHARGE AIR WILL BLOW LOOSE GRIT AND MATERIALS WHICH CAN CAUSE INJURY.

    1. Refer to Figure, Figure, Figure, Figure, Figure, and Figure.

      2. Inspect the damage at Location 1.

      1. Damage depth at Location 1 must be no more than 0.001 in. (0.025 mm). Blending at Location 1 is not permitted.

      3. Blend the damage at Locations 2 and 3 by SPM TASK 70-35-03-300-501.

      1. Blend to a sufficient depth to remove damage plus more 0.002 in. to 0.003 in. (0.05 mm to 0.08 mm) of material. Blend to a maximum depth of 0.005 in. (0.13 mm). Break the edges 0.003 in. to 0.015 in. (0.08 mm to 0.38 mm).

      4. Blend the damage at Location 4 by SPM TASK 70-35-03-300-501.

      1. Blend to a sufficient depth to remove damage plus more 0.002 in. to 0.003 in. (0.05 mm to 0.08 mm) of material. Blend to a maximum depth of 0.005 in. (0.13 mm). The minimum blend length at Location 4 must not be more than 0.500 in. (12.7 mm) in a circumferential direction. There must be a minimum of 2.000 in. (50.8 mm) between blended areas. Break the edges 0.003 in. to 0.015 in. (0.08 mm to 0.38 mm).

      5. Inspect the damage at Location 5.

      1. Damage depth at Location 5 must be no more than 0.002 in. (0.05 mm). Blending at Location 5 is not permitted.

      6. Inspect the damage at Location 6.

      1. Damage depth at Location 6 must be no more than 0.002 in. (0.05 mm). Blending at Location 6 is not permitted.

    3. SUBTASK 72-45-00-350-052-002 Blend the Stage 2 HPT Air Seal (Manual Method)

    1. Refer to Figure, Figure, Figure, Figure, Figure, and Figure.

      2. Inspect the damage at Location 1.

      1. Damage depth at Location 1 must be no more than 0.001 in. (0.025 mm). Blending at Location 1 is not permitted.

      3. Blend the damage at Locations 2 and 3 by SPM TASK 70-35-03-300-501.

      1. Blend to a sufficient depth to remove damage plus more 0.002 in. to 0.003 in. (0.06 mm to 0.08 mm) of material. Blend to a maximum depth of 0.005 in. (0.13 mm). Break the edges 0.003 in. to 0.015 in. (0.08 mm to 0.38 mm).

      4. Blend the damage at Location 4 by SPM TASK 70-35-03-300-501.

      1. Blend to a sufficient depth to remove damage plus more 0.002 in. to 0.003 in. (0.05 mm to 0.08 mm) of material. Blend to a maximum depth of 0.005 in. (0.13 mm). The minimum blend length at Location 4 must not be more than 0.500 in. (12.7 mm) in a circumferential direction. There must be a minimum of 2.000 in. (50.8 mm) between blended areas. Break the edges 0.003 in. to 0.015 in. (0.08 mm to 0.38 mm).

      5. Inspect the damage at Location 5.

      1. Damage depth at Location 5 must be no more than 0.002 in. (0.05 mm). Blending at Location 5 is not permitted.

      6. Inspect the damage at Location 6.

      1. Damage depth at Location 6 must be no more than 0.002 in. (0.05 mm). Blending at Location 6 is not permitted.

    4. SUBTASK 72-45-24-230-201 Examine the Blended Repair Areas

      1. Fluorescent penetrant inspect the blend repaired surfaces.

      1. Refer to TASK 72-45-00-200-000 (Inspection-000) and select the appropriate Inspection-002 by the applicable part number.

    5. SUBTASK 72-45-00-380-054 Shotpeen the Blend Repaired Areas (Local)

      CAUTION

      THE SOURCE DEMONSTRATION VENDOR IS NECESSARY TO DO THE SHOTPEEN AT LOCATIONS 2 AND 4 OR DAMAGE TO THE PART CAN OCCUR.

    1. Refer to Figure, Figure, Figure, Figure, Figure, and Figure.

      2. Shotpeen the blend repaired areas at Location 3.

        1. Refer to SPM TASK 70-38-13-380-501.

        1. Shotpeen with intensity of 4A, use S-170 shot or CW-20 cut wire shot of HDNS 45 HRC minimum or equivalent. You must shotpeen the full blend repaired areas.

    6. SUBTASK 72-45-00-380-055 Shotpeen the Blend Repaired Areas (Source Demonstration necessary)

      CAUTION

      THE SOURCE DEMONSTRATION VENDOR IS NECESSARY TO DO THE SHOTPEEN AT LOCATIONS 2 AND 4 OR DAMAGE TO THE PART CAN OCCUR.

    1. Refer to Figure, Figure, Figure, Figure, Figure, and Figure.

      2. Shotpeen the blend repaired areas Location 2.

      1. Source demonstration is necessary for this repair process. Refer to the Authorized Repair Vendor given in the repair procedure.

      2. Shotpeen with intensity of 4A, use S-170 shot or CW-20 cut wire shot of HDNS 45 HRC minimum or equivalent.

      3. Shotpeen the blend repaired areas at Location 4.

      1. Source demonstration is necessary for this repair process. Refer to the Authorized Repair Vendor given in the repair procedure.

      2. Shotpeen with intensity of 4A, use S-170 shot or CW-20 cut wire shot of HDNS 45 HRC minimum or equivalent.

    7. SUBTASK 72-45-00-230-190 Examine the Stage 2 HPT Air Seal for the Axial Length

    1. For part number 2A4196, refer to TASK 72-45-00-200-002-G00 (Inspection-002), SUBTASK 72-45-00-220-186.

    2. For part number 2A4157, refer to TASK 72-45-00-200-002-I00 (Inspection-002), SUBTASK 72-45-00-220-203.

    8. Figure: Repair Locations And Details For PN 2A4157

    Repair Locations And Details For PN 2A4157

    Figure: Repair Locations and Details for PN 2A4157

    Repair Locations and Details for PN 2A4157

    Figure: Repair Locations and Details for PN 2A4157

    Repair Locations and Details for PN 2A4157

    Figure: Repair Locations And Details For PN 2A4196

    Repair Locations And Details For PN 2A4196

    Figure: Repair Locations and Details for PN 2A4196

    Repair Locations and Details for PN 2A4196

    Figure: Repair Locations and Details for PN 2A4196

    Repair Locations and Details for PN 2A4196

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Corrected the mm conversion limits. (20VC228)

Change Type:

Editorial to add inadvertently removed step. (16VC242)

Change Type:

Added, revised procedural steps and figures. (20VC342)