TASK 72-41-32-200-005 HPC Stage 6 Variable Stator Vane - Examine The Stage 6 Variable Stator Vanes And Seal Rings, Inspection-005

DMC:V2500-A0-72-41-3206-00A-300A-C|Issue No:002.00|Issue Date:2016-08-01

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 72-41-32-200-005 HPC Stage 6 Variable Stator Vane - Examine The Stage 6 Variable Stator Vanes And Seal Rings, Inspection-005

Effectivity

FIG/ITEM PART NO.

05-500

6A3699

05-500

6A3763

05-600

6A3752

05-600

6A3764

General

This TASK gives the procedure for the inspection of the stage 6 variable stator vanes and seal rings.

Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For service bulletin alpha variants refer to the IPC.

The policy that is necessary for inspection is given in the SPM TASK 70-20-01-200-501.

All the parts must be cleaned before any part is examined.

All the parts must be visually examined for damage, corrosion and wear. Any defects that are not identified in the procedure must be referred to IAE.

The procedure for the parts which must have a crack test is given in Step. Do the crack test before a part is visually examined.

Do not discard any part until you are sure there are no repairs available. Refer to the instructions in repair before a discarded part is used again or oversize parts are installed.

Parts which should be discarded can be held although no repair is available. The repair of a discarded part can be shown to be necessary at a subsequent date.

All the parts must be examined to make sure that all the repairs have been completed satisfactorily.

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

References

Refer to the SPM for data on these items.

Definition of Damage, SPM TASK 70-02-02-350-501

Inspection of Parts, SPM TASK 70-20-01-200-501

Some data on these items is contained in this TASK. For more data on these items refer to the SPM.

Method of Testing for Crack Indications

Chemical Processes

Surface Protection

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-32-230-055 Examine the Stage 6 Variable Stator Vanes for Cracks

    1. Clean the parts. Refer to TASK 72-41-32-100-000 (CLEANING-000).

      2. Do the test for cracks on the part that is given below.

        PART IDENT TASK/SUBTASK

        Stage 6 variable stator vanes

        1. Cracked.

          1. Airfoil tip

          1. Refer to Step

          2. All remaining surfaces

          1. Reject

    2. SUBTASK 72-41-32-220-089 Examine the Stage 6 Variable Stator Vanes Airfoil at Location 1

    1. Refer to Figure.

      2. Nicked.

        1. Zone A.

          1. Up to 0.005 in. (0.13 mm) in depth

          1. Repair, VRS6037 TASK 72-41-32-300-009 (REPAIR-009)

        2. Zone B.

          1. Nicks irrespective of size or depth

          1. Reject

      3. Dents.

        1. Zone A.

          1. Up to 0.005 in. (0.13 mm) in depth

          1. Repair, VRS6037 TASK 72-41-32-300-009 (REPAIR-009)

        2. Zone B.

          1. Dents irrespective of size or depth

          1. Reject

      4. Scratched.

        1. Zone A.

          1. Up to 0.005 in. (0.13 mm) in depth

          1. Repair, VRS6037 TASK 72-41-32-300-009 (REPAIR-009)

        2. Zone B.

          1. Scratches irrespective of size or depth

          1. Reject

      5. Pitted.

        1. Zone A.

          1. Isolated pitting up to 0.005 in. (0.13 mm) in depth

          1. Accept

          2. Heavy pitting up to 0.005 in. (0.13 mm) in depth

          1. Repair, VRS6037 TASK 72-41-32-300-009 (REPAIR-009)

        2. Zone B.

          1. Pitting irrespective of size or depth

          1. Reject

    3. SUBTASK 72-41-32-220-090 Examine the Stage 6 Variable Stator Vanes Surfaces at Location 2

    1. Refer to Figure.

      2. Scored

      1. Repair, VRS6615 TASK 72-41-32-300-020 (REPAIR-020)

      3. Wear

      1. Repair, VRS6615 TASK 72-41-32-300-020 (REPAIR-020)

      4. Scratched

      1. Repair, VRS6615 TASK 72-41-32-300-020 (REPAIR-020)

    4. SUBTASK 72-41-32-220-091 Examine the Stage 6 Variable Stator Vanes Leading and Trailing Edges at Locations 3 and 4

    1. Refer to Figure.

      2. Nicked.

        1. Up to 0.005 in. (0.13 mm) in depth

        1. Repair, VRS6037 TASK 72-41-32-300-009 (REPAIR-009)

      3. Dents.

        1. Up to 0.005 in. (0.13 mm) in depth

        1. Repair, VRS6037 TASK 72-41-32-300-009 (REPAIR-009)

      4. Scored.

        1. Up to 0.005 in. (0.13 mm) in depth

        1. Repair, VRS6037 TASK 72-41-32-300-009 (REPAIR-009)

    5. SUBTASK 72-41-32-220-092 Examine the Stage 6 Variable Stator Vanes Airfoil Surface Finish at Location 1

    1. Refer to Figure.

      NOTE

      A Tallysurf measuring instrument must not be used.

      2. Measure the surface finish of the vanes. Use 10 percent of the vanes that have been removed.

        1. Roughness up to 30 micro-inches (0.80 micrometer)

        1. Accept

        2. More than Step.

        1. Repair, VRS6079 TASK 72-41-32-300-010 (REPAIR-010)

    6. SUBTASK 72-41-32-220-093 Examine the Stage 6 Variable Stator Vanes Spindles at Location 5

    1. Refer to Figure.

      2. Scored.

        1. Up to 0.005 in. (0.13 mm) in depth

        1. Accept

        2. More than Step.

        1. Repair, VRS6185 TASK 72-41-32-300-016 (REPAIR-016)

      3. Wear.

        1. If the diameter of the spindle is between 0.389 to 0.392 in. (9.90 to 9.95 mm)

        1. Accept

        2. Less than Step.

        1. Repair, VRS6185 TASK 72-41-32-300-016 (REPAIR-016)

      4. Spindle flat.

        1. Wear

        1. Reject

        2. Scored

        1. Reject

    7. SUBTASK 72-41-32-220-120 Examine the Stage 6 Variable Stator Vanes Spindles at Location 6

    1. Refer to Figure.

      2. Scored.

        1. Up to 0.005 in. (0.13 mm) in depth

        1. Accept

        2. More than Step.

        1. Repair, VRS6185 TASK 72-41-32-300-016 (REPAIR-016)

      3. Wear.

        1. If the diameter of the spindle is between 0.468 to 0.470 in. (11.90 to 11.95 mm)

        1. Accept

        2. Less than Step.

        1. Repair, VRS6185 TASK 72-41-32-300-016 (REPAIR-016)

      4. Spindle flat.

        1. Wear

        1. Reject

        2. Scored

        1. Reject

    8. SUBTASK 72-41-32-220-101 Examine the Stage 6 Variable Stator Vanes Airfoil Tips at Location 7

    1. Refer to Figure.

      2. Cracked

      1. Repair, VRS6059 TASK 72-41-32-300-011 (REPAIR-011)

      3. Rubbed

      1. Repair, VRS6059 TASK 72-41-32-300-011 (REPAIR-011)

    9. SUBTASK 72-41-32-220-094 Examine the Stage 6 Variable Stator Vanes at Location 8

    1. Refer to Figure.

      2. Thread.

        1. Crossed

        1. Reject

        2. Stripped

        1. Reject

        3. Pick-up

        1. Reject

    10. SUBTASK 72-41-32-220-095 Examine the Stage 6 Variable Stator Vanes Seal Ring at Location 9

    1. Refer to Figure.

      2. Too loose

      1. Replace seal ring

      3. Worn

      1. Replace seal ring

      4. Damaged

      1. Replace seal ring

    11. SUBTASK 72-41-32-220-097 Examine the Stage 6 Variable Stator Vanes Surface at Location 10

    1. Refer to Figure.

      2. Examine the engraved identity markings.

        1. Identity markings not encroaching into the fillet radius.

        1. Accept.

        2. Other than Step.

        1. Reject.

    12. Figure: Stage 6 Variable Stator Vanes - Inspection Locations

    Stage 6 Variable Stator Vanes - Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure to add new subtask to examine the stage 6 variable stator vanes surface at location 10. (14VR726)

Change Type:

Revised the procedure to examine the stage 6 variable stator vanes at location 1, location 5 and location 6. (14VR726)