TASK 72-41-34-300-012 HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392)

DMC:V2500-A0-72-41-3411-01A-649A-C|Issue No:001.00|Issue Date:2019-11-01

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 72-41-34-300-012 HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392)

Effectivity

FIG/ITEM PART NO.

01-600

6A7975

01-600

6A8610

01-630

6A7976

01-630

6A8611

Material of component

Part IDENT

MATERIAL

Vane Actuating Shaft

Corrosion Resistant Steel

General

The practices and processes referred to in the procedure by the TASK numbers are in the SPM.

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 72-41-34-350-206 Blend to Remove Damage on Platform Surface Location 3 (For PNs 6A7975 and 6A7976 Only)

    1. Refer to Figure.

      2. Blend to remove surface damage on the platform surface Location 3 by SPM TASK 70-35-03-300-501.

      1. Blend to the depth of the damage as shown in Figure. Do not increase depth of damage. Remove minimum amount of parent material necessary.

      2. Maximum blend depth allowed is 0.030 in. (0.76 mm).

      3. Ensure minimum blend length to depth ratio of 10 to 1.

      4. No sharp edges, blend smooth and continuous with surrounding surface.

      5. Make sure damage marks are fully removed.

    2. SUBTASK 72-41-34-350-207 Blend to Remove Surface Damage on Wrench Flat Surfaces (For PNs 6A7975 and 6A7976 Only)

    1. Refer to Figure and Figure.

      2. Blend to remove surface damage on the wrench flat surfaces by SPM TASK 70-35-03-300-501.

      1. Blend to the depth of the damage as shown in Figure and Figure. Do not increase depth of damage. Remove minimum amount of parent material necessary.

      2. Maximum blend depth allowed is 0.020 in. (0.50 mm).

      3. Minimum blend length to depth ratio waived.

      4. No sharp edges, blend smooth and continuous with surrounding surface.

      5. Make sure damage marks are fully removed.

    3. SUBTASK 72-41-34-350-208 Blend to Remove Damage on Bearing Surface 1353 (PN 6A8611 Only)

    1. Refer to Figure.

      2. Blend to remove surface damage on the bearing Surface 1353 by SPM TASK 70-35-03-300-501.

      1. Blend to the depth of the damage as shown in Figure. Do not increase depth of damage. Remove minimum amount of parent material necessary.

      2. Maximum blend depth allowed is 0.010 in. (0.25 mm).

      3. No sharp edges, blend smooth and continuous with surrounding surface.

      4. Minimum blend length to depth ratio waived.

      5. Cumulative blend area must not exceed one percent of the bearing Surface 1353.

      6. Make sure damage marks are fully removed.

    4. SUBTASK 72-41-34-350-209 Blend to Remove Damage on HPC Vane Actuating Crankshaft Aft Surfaces (PNs 6A8610 and 6A8611 Only)

    1. Refer to Figure.

      2. Blend to remove surface damage on the HPC Vane Actuating Crankshaft Aft Surface by SPM TASK 70-35-03-300-501.

      1. Blend to the depth of the damage as shown in Figure. Do not increase depth of damage. Remove minimum amount of parent material necessary.

      2. Maximum blend depth allowed is 0.010 in. (0.25 mm).

      3. No sharp edges, blend smooth and continuous with surrounding surface.

      4. Ensure minimum blend length to depth ratio of 10 to 1.

      5. Make sure damage marks are fully removed.

    5. SUBTASK 72-41-34-110-153 Do a Swab Etch

    1. Chemically clean and swab etch the repaired area(s) by SPM TASK 70-11-39-300-503.

    6. SUBTASK 72-41-34-230-677 Do a Crack Test

      1. Do a local penetrant crack test on the repaired area(s) by SPM TASK 70-23-05-230-501.

      1. Use high sensitivity fluorescent penetrant. No indications or cracks permitted.

    7. SUBTASK 72-41-34-350-210 Polish the repair area

    1. Polish the repair area(s) to give a surface finish the same as adjacent surface by SPM TASK 70-35-03-300-501.

    8. SUBTASK 72-41-34-350-211 Identify the Repair

      1. Permanently mark the part with "VRS9392" adjacent to the existing part number by SPM TASK 70-09-00-400-501.

      1. Use vibration peen method.

    9. Figure: HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392) (Applicable to PNs 6A7975 and 6A7976 Only)

    HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392) (Applicable to PNs 6A7975 and 6A7976 Only)

    Legend
    1

    HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392) (Applicable to PNs 6A7975 and 6A7976 Only)

    1. Blend Allowable Zone On Location 3.

    2. Blending Is Allowed Up To 0.050 Inch (1.27 mm) Maximum From The Two Edges Of Location 3.

    3. 0.150 Inch (3.81 mm) Minimum No Blend Zone From The Face.

    4. 0.030 Inch (0.76 mm) Maximum Blend Depth.

    Close

    Figure: HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392) (Applicable to PNs 6A7975 and 6A7976 Only)

    HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392) (Applicable to PNs 6A7975 and 6A7976 Only)

    Legend
    1

    HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392) (Applicable to PNs 6A7975 and 6A7976 Only)

    1. Blend Allowable Zone On Wrench Flat Surfaces.

    2. No Blend Allowed On The Fillet Radius.

    4. 0.020 Inch (0.50 mm) Maximum Blend Depth.

    3. Blending Is Allowed Up To 0.440 Inch (11.17 mm) Maximum From The Edge Of Surface X.

    Close

    Figure: HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392) (Applicable to PN 6A8611 Only)

    HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392) (Applicable to PN 6A8611 Only)

    Legend
    1

    HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392) (Applicable to PN 6A8611 Only)

    1. Blend Allowable Zone On The Bearing Surface 1353.

    2. 0.060 Inch (1.53 mm) Minimum No Blend Zone From The Face.

    3. 0.010 Inch (0.25 mm) Maximum Blend Depth Allowed.

    Close

    Figure: HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392) (Applicable to PNs 6A8610 and 6A8611 Only)

    HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392) (Applicable to PNs 6A8610 and 6A8611 Only)

    Legend
    1

    HPC Vane Actuating Crankshaft, Surface Damage Blend Repair-012 (VRS9392) (Applicable to PNs 6A8610 and 6A8611 Only)

    1. Blend Allowable Zones On The Aft Flange Surfaces. 0.010 Inch (0.25 mm) Maximum Blend Depth.

    2. No Blending Allowed On The Fillet Radius.

    3. 0.100 Inch (2.54 mm) Minimum No Blend Zone Above The Fillet.

    4. 0.150 Inch (3.81 mm) Minimum No Blend Zone Around The Holes. Do Not Blend Into Holes.

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added new repair. (18VG300)