TASK 72-41-15-300-021 HPC Stage 4 Rotor Blade - Vibro Polish To Restore The Surface Finish, Repair-021 (VRS6066)

DMC:V2500-A0-72-41-1504-00A-648A-C|Issue No:002.00|Issue Date:2021-05-01

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 72-41-15-300-021 HPC Stage 4 Rotor Blade - Vibro Polish To Restore The Surface Finish, Repair-021 (VRS6066)

Effectivity

FIG/ITEM

PART NO.

ASSEMBLY

01-500

6A3333

A

01-500

6A3635

A

01-500

6A3939

A

Deleted

Deleted

Deleted

01-500

6A7635

A

01-500

6A8738

B

Material of component

DESCRIPTION

MATERIAL

HPC - Stage 4 Rotor Blade

Titanium alloy

General

This TASK gives the procedure to vibro-polish the HPC Stage 4 Rotor Blades.

The blades must have been repaired, where necessary, and inspected before vibro-polishing.

The blades can only have this repair completed on them three times.

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

Price and Availability

Refer to International Aero Engines.

Related Repairs

HPC Blades - Restore Stage 3 to 5 Anti-Fret Treatment, refer to Repair, VRS6486 TASK 72-41-15-300-046 (REPAIR-046).

NOTE

Equipment and materials necessary to do this repair are in the SPM TASKS given below:
SPM TASK 70-09-00-400-501
SPM TASK 70-11-03-300-503
SPM TASK 70-38-25-380-501

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

Action/ConditionData Module/Technical Publication
Make sure that all cleaning and inspection procedures are done before this repair.
All other repairs must be completed before you apply VRS6066.
Restore the airfoil surface finish before you apply VRS6066. Refer to repair VRS6150 (REPAIR-040).TASK 72-41-15-300-040

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
IAE 3R18548 Mask0AM53IAE 3R185481

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-093 SUPERFINISHING MEDIA, CERAMIC, ANGLE CUT TRIANGLE IAE56CoMat 05-093
CoMat 05-095 LIQUID COMPOUND (VIBROPOLISHING FINISHING FLUID)IE230CoMat 05-095
CoMat 05-181 VIBRO POLISHING MEDIA, CERAMIC PINLOCALCoMat 05-181
CoMat 05-182 VIBRO POLISHING COMPOUND, LIQUIDIAE56CoMat 05-182
CoMat 05-183 VIBRO POLISHING PASTEIAE56CoMat 05-183

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-15-220-171 Make sure that the Stage 4 Rotor Blade can be Vibro Polished

    1. Refer to Figure for Assembly A and Figure for Assembly B.

      2. Examine the blade root to find, if VRS6066 was done before.

        1. Examine the component for the repair identification symbol, a 1 in a triangle, and any suffixes.

          1. If the repair identification symbol and a /2 suffix are engraved adjacent to the part number.

          1. Reject.

          2. If there is no repair identification symbol or if the repair identification symbol is engraved with a /1 suffix or with no suffix adjacent to the part number.

          1. Continue with the repair.

    2. SUBTASK 72-41-15-350-064 Apply the Mask to the Stage 4 Rotor Blade

      1. Apply a mask or maskants to the blade root.

      1. Apply a mask or maskants over minimum area of blade air washed surface.

      2. Refer to SPM TASK 70-38-25-380-501 and/or use IAE 3R18548 Mask.

    3. SUBTASK 72-41-15-380-063-A00 Vibro-Polish the Stage 4 Rotor Blade Airfoil, Assembly A

    1. Refer to Figure.

      2. Vibro-polish the blade airfoil and adjacent annulus surfaces.

      1. Refer to SPM TASK 70-38-25-380-501.

        2. Polish the surfaces in the area specified AB.

        1. The surface finish is to be 16 microinches (0.40 micrometers) maximum on a minimum of 70 percent of the surface area.

        2. On the remainder of the blade, the surface finish is to be between 16 microinches (0.40 micrometers) and 32 microinches (0.80 micrometers).

        3. Do not have more than five blades for one cubic foot of the superpolishing media.

          4. Use one of the following options to get the surface finish limits. The dimension of the superfinishing media is to be 10 mm x 10 mm maximum.

          3. Option 3: Method Two consumables.

    4. SUBTASK 72-41-15-380-063-B00 Vibro-Polish the Stage 4 Rotor Blade Airfoil, Assembly B

    1. Refer to Figure.

      2. Vibro-polish the blade airfoil and adjacent annulus surfaces.

      1. Refer to SPM TASK 70-38-25-380-501.

        2. Polish the surfaces in the area specified AB.

        1. A maximum of 10 microinches (0.25 micrometers) surface finish is permitted on blade airfoil and fillet surfaces.

        2. On the remainder of the blade, the maximum surface finish is to be 16 microinches (0.40 micrometers).

        3. Do not have more than five blades for one cubic foot of the superpolishing media.

          4. Use one of the following options to get the surface finish limits. The dimension of the superfinishing media is to be 10 mm x 10 mm maximum.

          3. Option 3: Method Two consumables.

    5. SUBTASK 72-41-15-350-139 Remove the Mask from the Stage 4 Rotor Blade

    1. Remove the mask or maskants.

    6. SUBTASK 72-41-15-110-200 Clean the Stage 4 Rotor Blade

      1. Clean by aqueous degreasing.

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

    7. SUBTASK 72-41-15-220-172-A00 Examine the Stage 4 Rotor Blade Surface Finish, Assembly A

    1. Refer to Figure.

      2. Examine the surface finish of the blade.

      1. Refer to SPM TASK 70-38-25-380-501.

        2. Examine the surface finish on the each side of the airfoil and the adjacent surfaces in the area specified AB.

        1. Surface finish must obey the limits of Step.

          2. If the surface finish is not in the specified limits, do the repair from Step again.

          1. Record each application of vibro-polishing during procedure of VRS6066.

          2. Repair can be applied again, only if the repair identification symbol suffix number will not be more than /2 after the initial application. Each application must be recorded.

        3. If the surface finish is in the specified limits, continue with the repair.

    8. SUBTASK 72-41-15-220-172-B00 Examine the Stage 4 Rotor Blade Surface Finish, Assembly B

    1. Refer to Figure.

      2. Examine the surface finish of the blade.

      1. Refer to SPM TASK 70-38-25-380-501.

        2. Examine the surface finish on the each side of the airfoil and the adjacent surfaces in the area specified AB.

        1. Surface finish must obey the limits of Step.

          2. If the surface finish is not in the specified limits, do the repair from Step again.

          1. Record each application of vibro-polishing during procedure of VRS6066.

          2. Repair can be applied again, only if the repair identification symbol suffix number will not be more than /2 after the initial application. Each application must be recorded.

        3. If the surface finish is in the specified limits, continue with the repair.

    9. SUBTASK 72-41-15-350-065 Identify the Repair

    1. Refer to Figure for Assembly A and Figure for Assembly B.

      2. Mark the repair identification symbol and the applicable suffix numbers at the indicated location on blade, use vibration peen method.

      1. Refer to SPM TASK 70-09-00-400-501.

        2. If this is the first application of VRS6066, mark the repair identification symbol, a 1 in a triangle, on the indicated surface adjacent to the part number adjacent to the part number.

        1. If the blade is already identified with the repair identification symbol, only the suffix number is to be updated.

      3. If this is the second application of VRS6066, mark /1 adjacent to the repair identification symbol.

      4. If this is the third application of VRS6066, mark /2 adjacent to the repair identification symbol.

      5. Record each application of vibro-polishing during procedure of VRS6066. The process can be applied again, only if the inspection is in agreement with Step or Step, then this must be counted as an additional application of VRS6066 and the applicable suffix number must be updated.

    10. SUBTASK 72-41-15-380-141 Apply the Dry Film Lubricant

      1. Apply the dry film lubricant to the dovetail root for the applicable part numbers.

      1. Refer to Repair, VRS6486 TASK 72-41-15-300-046 (REPAIR-046).

    11. Figure: Repair Details And Dimensions - Assembly A

    Repair Details And Dimensions - Assembly A

    Figure: Repair Details And Dimensions - Assembly B

    Repair Details And Dimensions - Assembly B

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure in its entirety. (19VG261)

Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:IAE56
Enterprise Name:DELETED. REFER TO VENDOR CODE V056V.
Manufacturer Code:IE230
Enterprise Name:DELETED. REFER TO VENDOR CODE FAJU6.
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:CK340
Supply Number:CoMat 05-093
Type:sp01
Supply Short Name:CoMat 05-093 SUPERFINISHING MEDIA, CERAMIC, ANGLE CUT TRIANGLE
Supply Name:CoMat 05-093 SUPERFINISHING MEDIA, CERAMIC, ANGLE CUT TRIANGLE
Specification Groups:
Doc NumberType
ROSLER RM S ANGLE CUT TRIANGLE
Suppliers:
ManufacturerRemarks
CK340
K6835
V056V
Manufacturer Code:DL610
Supply Number:CoMat 05-095
Type:sp01
Supply Short Name:CoMat 05-095 LIQUID COMPOUND (VIBROPOLISHING FINISHING FLUID)
Supply Name:CoMat 05-095 LIQUID COMPOUND (VIBROPOLISHING FINISHING FLUID)
Specification Groups:
Doc NumberType
ARF
Suppliers:
ManufacturerRemarks
DL610
FAJU6
K6835
V140V
V563V
Manufacturer Code:X222X
Supply Number:CoMat 05-181
Type:sp01
Supply Short Name:CoMat 05-181 VIBRO POLISHING MEDIA, CERAMIC PIN
Supply Name:CoMat 05-181 VIBRO POLISHING MEDIA, CERAMIC PIN
Specification Groups:
Doc NumberType
Where CoMat 05-181 is specified with no letter suffix, use CoMat 05-181A or CoMat 05-181B
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:K6835
Supply Number:CoMat 05-182
Type:sp01
Supply Short Name:CoMat 05-182 VIBRO POLISHING COMPOUND, LIQUID
Supply Name:CoMat 05-182 VIBRO POLISHING COMPOUND, LIQUID
Specification Groups:
Doc NumberType
Rosler FC 120
Suppliers:
ManufacturerRemarks
K6835
V056V
Manufacturer Code:K6835
Supply Number:CoMat 05-183
Type:sp01
Supply Short Name:CoMat 05-183 VIBRO POLISHING PASTE
Supply Name:CoMat 05-183 VIBRO POLISHING PASTE
Specification Groups:
Doc NumberType
SVRB 1
Suppliers:
ManufacturerRemarks
K6835
V056V
Manufacturer Code:0AM53
Tool Number:IAE 3R18548
Tool Name:IAE 3R18548 Mask