TASK 72-45-33-300-008 HPT Stage 2 Blade Retaining Plate - Skim Grind Repair, Repair-008 (VRS3853)

DMC:V2500-A0-72-45-3301-00A-655A-C|Issue No:001.00|Issue Date:2020-11-01

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 72-45-33-300-008 HPT Stage 2 Blade Retaining Plate - Skim Grind Repair, Repair-008 (VRS3853)

Effectivity

FIG/ITEM

PART NO.

01-020

2A0160

01-020

2A1813

01-020

2A2097

01-020

2A3426

01-020

2A3437

Material of component

DESCRIPTION

RR

SYMBOL

MATERIAL

HPT Stage 2 Blade Retaining Plate

-

Nickel Base Alloy

General

Price and Availability - Refer to IAE

This repair must only be done when the instruction to do so is given in Task 72-45-33 Inspection/Check.

Related Repair - None

Preliminary Requirements

Pre-Conditions

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

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-45-33-320-061 Skim Grind to Remove Dents, Nicks, Tool Marks, Galling and Wear from the Rear Face of HPT Stage 2 Blade

      1. Skim grind to remove dents, nicks, tool marks, galling and wear from the rear face of HPT Stage 2 Blade Retaining Plate to the limits specified in Figure.

      1. Remove an additional 0.002 in. - 0.003 in. (0.051 mm - 0.076 mm) of parent material beyond the depth of damage.

      2. Remove the minimum amount of parent material necessary to accomplish the repair.

      3. Restore the radii to the limits specified in Figure.

      4. Break edges 0.003 in. - 0.015 in. (0.077 mm - 0.381 mm) all around on HPT Stage 2 Blade Retaining Plate rear face.

      5. Surface texture 63 Ra must be maintained.

      6. No mismatch is allowed.

    2. SUBTASK 72-45-33-110-064 Clean the Part

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

    3. SUBTASK 72-45-33-230-068 Do a Fluorescent Penetrant Inspection of the Part

      1. Do a fluorescent penetrant inspection of the part by SPM TASK 70-23-04-230-501.

      1. Cracks are not permitted.

    4. SUBTASK 72-45-33-380-060 Shotpeen the Repaired Area(s)

      1. Shotpeen the repaired area(s) on HPT Stage 2 Blade Retaining Plate by SPM TASK 70-38-13-380-501. See Figure.

      1. Use an intensity of 4A and S-170, CW-20 or SCW-20 maximum shot size.

      2. Shotpeen overspray permitted, minimum intensity waived but complete coverage is required.

      3. Shotpeen is not permitted on any finish coated surfaces and marking location.

      4. No rolled edges or sharp lines of demarcation are permitted.

    5. SUBTASK 72-45-33-220-100 Do a Dimensional Inspection of the Part

      1. Do a dimensional inspection of the part. See Figure.

      1. Do a dimensional inspection of Index 1 and Index 4 of Figure. Refer to applicable Inspection-001, TASK 72-45-33-200-001-A00, TASK 72-45-33-200-001-B00 or TASK 72-45-33-200-001-C00.

    6. SUBTASK 72-45-33-350-064 Mark the Part

      1. Mark VRS3853 adjacent to the part number. See Figure.

      1. Make a permanent mark by the procedure given in the SPM TASK 70-09-00-400-501. Marking must be accomplished with only deep electrolytic etch, vibration peen, or deep dot peen.

    7. Figure: HPT Stage 2 Blade Retaining Plate - Rear Face Of Bayonet Slot Skim Grind Repair, Repair-008 (VRS3853)

    HPT Stage 2 Blade Retaining Plate - Rear Face Of Bayonet Slot Skim Grind Repair, Repair-008 (VRS3853)

    Legend
    1

    HPT Stage 2 Blade Retaining Plate - Rear Face Of Bayonet Slot Skim Grind Repair, Repair-008 (VRS3853)

    1. Refer To Step.

    2. For PNs 2A0160 And 2A1813: 17.075 - 17.085 Inches (433.705 - 433.959 mm) Diameter, Reference.

    For PNs 2A2097, 2A3426 And 2A3437: 16.903 - 16.913 Inches (429.337 - 429.590 mm) Diameter, Reference.

    3. 0.047 - 0.078 Inch (1.194 - 1.981 mm) Radius

    4. Refer To Step.

    5. 0.018 - 0.028 Inch (0.458 - 0.711 mm)

    6. 0.149 Inch (3.785 mm) Minimum

    7. 0.250 Inch (6.350 mm) Maximum

    8. VRS Marking Location

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

    10. 0.100 Inch (2.540 mm) Maximum

    NOTE: For PNs 2A0160 and 2A1813: All dimensions are applicable when Surface F is flat within 0.001 inch (0.026 mm) and Diameter G keeps a clearance envelope of 17.387 Inches (441.630 mm) diameter in a free or held condition. Hold the part only on Surfaces F, H, S, T and Diameter G.

    NOTE: For PNs 2A2097, 2A3426 and 2A3437: All dimensions are applicable when Surface F is flat within 0.001 inch (0.026 mm) and Diameter G keeps a clearance envelope of 17.215 Inches (437.261 mm) diameter in a free or held condition. Hold the part only on Surfaces F, H, S, T and Diameter G.

    Close

    Figure: HPT Stage 2 Blade Retaining Plate - Skim Grind Repair, Repair-008 (VRS3853)

    HPT Stage 2 Blade Retaining Plate - Skim Grind Repair, Repair-008 (VRS3853)

    Legend
    2

    HPT Stage 2 Blade Retaining Plate - Skim Grind Repair, Repair-008 (VRS3853)

    1. No Shotpeen Area.

    2. Shotpeen Overspray Permitted.

    3. Shotpeen Area.

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added new repair. (18VC415)