TASK 72-45-33-300-006 HPT Stage 2 Blade Retaining Plate - Dual Wire Electric Arc Coat Repair, Repair-006 (VRS3843)

DMC:V2500-A0-72-45-3301-02A-609A-C|Issue No:002.00|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 72-45-33-300-006 HPT Stage 2 Blade Retaining Plate - Dual Wire Electric Arc Coat Repair, Repair-006 (VRS3843)

Effectivity

FIG/ITEM

PART NO.

01-020

2A2097

01-020

2A3426

01-020

2A3437

Material of component

PART IDENT

SYMBOL

MATERIAL

HPT Stage 2 Blade Retaining Plate

-

Nickel base alloy

Preliminary Requirements

Pre-Conditions

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

Support Equipment

NONE

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-481 WIRE, DUAL ELECTRIC ARC, NICKEL-CHROMIUM/ ALUMINUM ALLOY26057CoMat 03-481

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-45-33-320-056-001 Removal of Existing Coat

    1. If the part is marked with VRS3843, machine or grind the existing coating from front face on Surface S to remove all the existing coating by SPM TASK 70-32-07-100-501. See Figure.

    2. If the part is marked with VRS3515, grind the existing coating from front outer mating face on Surface S to remove all the existing coating by SPM TASK 70-32-07-100-501. See Figure.

    3. Remove a minimum amount of parent material. All the coating must be removed.

    2. SUBTASK 72-45-33-320-056-002 Machine or Grind the Front Outer Mating Face on Surface S to Remove All the Repairable Wear or Damage

    1. Remove a minimum amount of parent material. See Figure.

    3. SUBTASK 72-45-33-110-058-001 Clean the Part

    1. Clean the part by SPM TASK 70-11-03-300-503. See Figure.

    4. SUBTASK 72-45-33-230-063 Do the Fluorescent Penetrant Inspection of the Repaired Area(s)

      1. Do the fluorescent penetrant inspection of the repaired areas by the applicable part number task given in TASK 72-45-33-200-000 (INSPECTION-000). See Figure.

      1. Cracks are not permitted.

    5. SUBTASK 72-45-33-220-098-001 Do a Dimensional Inspection of the Repair Area

    1. Do a dimensional inspection of the repair area before coating. See Figure.

    6. SUBTASK 72-45-33-380-053 Prepare the Repair Area(s) For Coat

    1. Prepare the repair areas for coat by SPM TASK 70-34-18-380-501. See Figure.

    2. Grit blast outside of the repair area is not permitted.

    3. Shot peen is not required on the repair area.

    4. Use masks or maskants.

    7. SUBTASK 72-45-33-340-053 Coat the Front Outer Mating Face

    1. Coat the front outer mating face by SPM TASK 70-34-03-340-501. See Figure.

    3. Apply the coat to a sufficient thickness to allow for finish machining.

    8. SUBTASK 72-45-33-320-056-003 Remove the Masks or Maskants

    1. Remove the masks or maskants by SPM TASK 70-34-18-380-501. See Figure.

    9. SUBTASK 72-45-33-320-056-004 Finish Machine the Front Outer Mating Face after Coat

    1. Finish machine the front outer mating face after coat by SPM TASK 70-32-07-100-501. See Figure.

    2. Finish coating thickness must be 0.003 in. to 0.020 in. (0.076 mm to 0.508 mm).

    3. Break the edges to 0.003 in. to 0.015 in. (0.08 mm to 0.38 mm).

    10. SUBTASK 72-45-33-110-058-002 Clean the Part

    1. Clean the Part by SPM TASK 70-11-03-300-503. See Figure.

    11. SUBTASK 72-45-33-220-098-002 Do a Dimensional and Visual Inspection of the Repaired Area

    1. Do a visual inspection of the repaired area by SPM TASK 70-34-03-340-501. See Figure.

    2. Do a dimensional inspection of the repaired area. See Figure.

    12. SUBTASK 72-45-33-350-053 Mark the Part

    1. Mark the part with VRS3843 adjacent to the part number by SPM TASK 70-09-00-400-501, Subtask 70-09-00-400-001, using the vibration peen, dot peen or electrolytic etch methods. Remove high spots caused by marking. See Figure.

    2. Refer to Figure for the electrical contact area.

    3. No burning, pitting or selective attach on the electrical contact area(s) is permitted.

    4. If the part was already marked with VRS3843, remarking is not required.

    13. Figure: HPT Stage 2 Blade Retaining Plate - The Outside Diameter Mating Face, Dual Wire Electric Arc Coat Repair, Repair-006 (VRS3843)

    HPT Stage 2 Blade Retaining Plate - The Outside Diameter Mating Face, Dual Wire Electric Arc Coat Repair, Repair-006 (VRS3843)

    Legend
    1

    HPT Stage 2 Blade Retaining Plate - The Outside Diameter Mating Face, Dual Wire Electric Arc Coat Repair, Repair-006 (VRS3843)

    1. 0.212 Inch (5.385 mm) Minimum Before Coat

    2. 0.232 - 0.242 Inch (5.893 mm - 6.147 mm) After Finish Machining

    3. Grit Blast And Coat Area.

    4. 0.250 Inch (6.350 mm) Maximum

    5. Marking Location.

    6. 0.047 - 0.078 Inch (1.194 - 1.982 mm) Radius

    7. Electrical Contact Permitted Only In This Area. No Burning, Pitting Or Selective Attack Permitted.

    8. 0.100 Inch (0.254 mm) Maximum

    9. 20.323 - 20.363 Inch (516.205 - 517.221 mm) Diameter

    10. 20.520 - 20.530 Inch (521.208 - 521.462 mm) Diameter

    Close

    NOTE

    For PN 2A3426, 2A3437 and 2A2097, all dimensions apply when Surface F is flat by 0.001 in. (0.025 mm) and Diameter G maintains a clearance envelope of 17.215 in. (437.261 mm) in a free or held condition. Hold the part only on Surface F, H, S, T and on Diameter G. Dimension R applies when the part is held only on Surface F, H and Diameter G.

    NOTE

    All surface texture should be 63 micro-inches (1.6 micro-meters).
    Table 4. Finish Machine Dimensions Based On The Coating Thickness

    Machine Before Coat

    Finish Machine

    Axial Dimension

    Axial Dimension

    If 0.222 - 0.232 Inch (5.639 - 5.893 mm)

    0.232 - 0.242 Inch (5.893 - 6.147 mm)

    If 0.221 Inch (5.614 mm)

    0.232 - 0.241 Inch (5.893 - 6.122 mm)

    If 0.220 Inch (5.588 mm)

    0.232 - 0.240 Inch (5.893 - 6.096 mm)

    If 0.219 Inch (5.563 mm)

    0.232 - 0.239 Inch (5.893 - 6.071 mm)

    If 0.218 Inch (5.538 mm)

    0.232 - 0.238 Inch (5.893 - 6.046 mm)

    If 0.217 Inch (5.512 mm)

    0.232 - 0.237 Inch (5.893- 6.020 mm)

    If 0.216 Inch (5.487 mm)

    0.232 - 0.236 Inch (5.893 - 5.995 mm)

    If 0.215 Inch (5.461 mm)

    0.232 - 0.235 Inch (5.893 - 5.969 mm)

    If 0.214 Inch (5.436 mm)

    0.232 - 0.234 Inch (5.893 - 5.944 mm)

    If 0.213 Inch (5.411 mm)

    0.232 - 0.233 Inch (5.893 - 5.918 mm)

    If 0.212 Inch (5.385 mm)

    0.232 Inch (5.893 mm)

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Updated legends to current standards. (18VC535)

Manufacturer Code:26057
Enterprise Name:TAFA INC
BU Name:TAFA INC
Street:146 PEMBROKE RD
City:CONCORD
State:NH
Zip Code:03301-5735
Country:USA
Phone Number:1-603-223-2163
Fax Number:1-603-225-4342
Internet:www.praxairthermalspray.com, www.praxair.com
Manufacturer Code:26057
Supply Number:CoMat 03-481
Type:sp01
Supply Short Name:CoMat 03-481 WIRE, DUAL ELECTRIC ARC, NICKEL-CHROMIUM/ ALUMINUM ALLOY
Supply Name:CoMat 03-481 WIRE, DUAL ELECTRIC ARC, NICKEL-CHROMIUM/ ALUMINUM ALLOY
Specification Groups:
Doc NumberType
73 MXC NICKEL CHROME ALUMINUM WIRE
Suppliers:
ManufacturerRemarks
26057