TASK 72-42-40-200-001-B00 HPC Exit Guide Vane Stator - Examine, Inspection-001

DMC:V2500-A0-72-42-4000-00B-300A-B|Issue No:004.00|Issue Date:2017-11-01

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

V2500-A5

Common Information

TASK 72-42-40-200-001-B00 HPC Exit Guide Vane Stator - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-200

6A4509

General

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

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

All the parts must be cleaned before any part is examined. Refer to TASK 72-42-40-100-000 (CLEANING-000).

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 those parts which must have a crack test is given in Step. Do the test before the 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 could be shown to be necessary at a later 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 numbers are in SPM.

References

Refer to 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 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 72-42-40-230-058 Examine the OGV Case

    1. Clean the parts. Refer to TASK 72-42-40-100-000 (CLEANING-000).

      2. Do the test for cracks on the parts that follow.

        PART IDENT

        TASK/SUBTASK

        Stage 12/OGV Casing

        1. Bolt holes at location 8, Figure.

          1. Radial cracking from hole to inner diameter

          1. Accept

          2. Cracking from hole radially outwards or circumferentially towards adjacent hole

          1. Reject

        2. OGV Vane Locations 1, 2, 3 and 4.

        1. Repair, VRS6640 TASK 72-42-40-300-006 (REPAIR-006).

        3. All other areas on case, unless specified in the relevant SUBTASK.

        1. Reject

    2. SUBTASK 72-42-40-220-068 Examine the OGV Case Concave and Convex Surfaces at Locations 1 and 2

    1. Refer to Figure

      2. Cracked or Nicked.

      1. Repair, VRS6041 TASK 72-42-40-300-002 (REPAIR-002)

      3. More than repairable limits in VRS6041

      1. Repair, VRS6640 TASK 72-42-40-300-006 (REPAIR-006)

      4. Pitted.

        1. Light isolated pitting of little density.

        1. Accept.

        2. Limits more than Step.

        1. Repair, VRS6640 TASK 72-42-40-300-006 (REPAIR-006).

    3. SUBTASK 72-42-40-220-069 Examine the OGV Case Leading and Trailing Edges at Locations 3 and 4

    1. Refer to Figure

      2. Cracked or Nicked.

      1. Repair, VRS6041 TASK 72-42-40-300-002 (REPAIR-002).

      3. More than repairable limits in VRS6041

      1. Repair, VRS6640 TASK 72-42-40-300-006 (REPAIR-006)

    4. SUBTASK 72-42-40-220-070 Examine the OGV Case Inner and Outer Platform Surfaces at Locations 5 and 6

    1. Refer to Figure.

      2. Nicked.

        1. Less than 0.003 in. (0.08 mm) in depth

        1. Accept

        2. Limits more than in Step

        1. Repair, VRS6115 TASK 72-42-40-300-001 (REPAIR-001)

      3. Pitted.

        1. Light isolated pitting of little density

        1. Accept

        2. Limits more than in Step.

        1. Repair, VRS6115 TASK 72-42-40-300-001 (REPAIR-001)

    5. SUBTASK 72-42-40-220-071 Examine the OGV Case Location Faces at Locations 7A, 7B and 7C

    1. Refer to Figure.

      2. Galled.

        1. To a depth not more than 0.003 in. (0.08 mm)

        1. Accept

        2. Limits more than in Step

        1. Repair, VRS6115 TASK 72-42-40-300-001 (REPAIR-001).

    6. SUBTASK 72-42-40-220-072 Measure the OGV Case Diameter D at Location 7C

    1. Refer to Figure

      2. Diameter D between 20.674 in. and 20.678 in. (525.12 mm and 525.22 mm) (Use 8 point mean or diameter tape).

      1. Accept

      3. Other than Step.

      1. Repair, VRS6233 TASK 72-42-40-300-004 (REPAIR-004)

    7. SUBTASK 72-42-40-220-073 Examine the OGV Case Bolt Holes at Location 8

    1. Refer to Figure

      2. Burred edges

      1. Repair, VRS6115 TASK 72-42-40-300-001 (REPAIR-001)

      3. Scored

      1. Reject

    8. Figure: Examine the Stage 12/OGV Casing

    Sheet 1

    Legend
    Examine the stage 12/OGV casing

    Sheet 1

    Close

    Figure: Examine the Stage 12/OGV Casing

    Sheet 2

    Legend
    Examine the stage 12/OGV casing

    Sheet 2

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure to add repair information for OGV Vane locations. (15VC263)