TASK 72-41-34-200-017 HPC Stage 4 Vane Ring Centralizing Pad And Housing - Examine, Inspection-017

DMC:V2500-A0-72-41-3444-00A-300A-C|Issue No:001.00|Issue Date:2013-11-01

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 72-41-34-200-017 HPC Stage 4 Vane Ring Centralizing Pad And Housing - Examine, Inspection-017

Effectivity

FIG/ITEM PART NO.

04-680

6A2468

04-680

6A3958

04-680

6A7394

04-730

6A2927

04-730

6A4343

04-730

6A4810

General

This TASK gives the procedure for the inspection of the stage 4 centralizing pads and housing assemblies.

Fig/item numbers in parentheses in the procedure agree with those used in 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. Refer to TASK 72-41-34-100 (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 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 number are in the SPM.

References

Refer to the SPM for data on these items.

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

Inspection of Parts, 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 72-41-34-230-066 Examine the Stage 4 Centralizing Pads and Housing Assemblies for Cracks

    1. Clean the parts. Refer to TASK 72-41-34-100-000 (CLEANING-000).

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

        PART IDENT TASK/SUBTASK

        Stage 4 centralizing pads and housing assemblies

        SPM TASK 70-23-02-230-501

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-34-220-129 Examine the Stage 4 Centralizing Pads Internal Surfaces at Location 1

    1. Refer to: Figure

      2. Galled.

        1. Up to 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step A.(1)

        1. Repair, VRS6206, TASK 72-41-34-300-038 (REPAIR-038)

      3. Scored.

        1. Up to 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step B.(1)

        1. Repair, VRS6206, TASK 72-41-34-300-038 (REPAIR-038)

    3. SUBTASK 72-41-34-220-130 Examine the Stage 4 Centralizing Pads Bolt Holes at Location 2

    1. Refer to: Figure

      2. Elongated

      1. Reject

      3. Burred edges

      1. Repair, VRS6206, TASK 72-41-34-300-038 (REPAIR-038)

    4. SUBTASK 72-41-34-220-131 Examine the Stage 4 Housing Assemblies Screw Thread Inserts at Location 3

    1. Refer to: Figure

      2. Screw thread inserts at location 3.

        1. Broken

        1. Repair, VRS6155, TASK 72-41-34-300-013 (REPAIR-013)

        2. Crossed

        1. Repair, VRS6155, TASK 72-41-34-300-013 (REPAIR-013)

        3. Threads that are not there

        1. Repair, VRS6155, TASK 72-41-34-300-013 (REPAIR-013)

        4. Worn

        1. Repair, VRS6155, TASK 72-41-34-300-013 (REPAIR-013)

    5. SUBTASK 72-41-34-220-132 Examine the Stage 4 Centralizing Pads and Housing Assemblies Pads at Locations 4 and 5

    1. Refer to: Figure

      2. Loose

      1. Repair

        2. Fig/item (04-680)

        1. Reject

        3. Fig/item (04-730)

        1. Repair, VRS6314, TASK 72-41-34-300-040 (REPAIR-040)

        4. Bearing surface.

          1. Scored.

            1. Up to 0.002 in. (0.05 mm) in depth

            1. Accept

            2. More than in step (1)(a)

            1. Repair

              2. Fig/item (04-680)

              1. Reject

              3. Fig/item (04-730)

              1. Repair, VRS6314, TASK 72-41-34-300-040 (REPAIR-040)

          2. Nicked.

            1. Up to 0.002 in. (0.05 mm) in depth

            1. Accept

            2. More than in step (2)(a)

            1. Repair

              2. Fig/item (04-680)

              1. Reject

              3. Fig/item (04-730)

              1. Repair, VRS6314, TASK 72-41-34-300-040 (REPAIR-040)

          3. Chipped.

            1. Up to 0.010 in. (0.25 mm) in depth at the edges which project no more than 10 percent in to the bearing surface

            1. Accept

            2. More than in step (3)(a)

            1. Repair

              2. Fig/item (04-680)

              1. Reject

              3. Fig/item (04-730)

              1. Repair, VRS6314, TASK 72-41-34-300-040 (REPAIR-040)

          4. Wear at dimension A Fig/item (04-680).

            1. If the thickness of the pad is between 0.009 to 0.012 in. (0.23 to 0.30 mm)

            1. Accept

            2. Less than in step (4) (a)

            1. Reject

    6. SUBTASK 72-41-34-220-179 Examine the Stage 4 Centralizing Parts and Housing Assemblies all Remaining Surfaces

      1. Nicked.

        1. Up to 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step A.(1)

        1. Repair

          2. Fig/item (04-680)

          1. Repair, VRS6206, TASK 72-41-34-300-038 (REPAIR-038)

          3. Fig/item (04-730)

          1. Repair, VRS6313, TASK 72-41-34-300-041 (REPAIR-041)

      2. Scored.

        1. Up to 0.002 in. (0.05 mm) in depth

        1. Accept

        2. More than in step B.(1)

        1. Repair

          2. Fig/item (04-680)

          1. Repair, VRS6206, TASK 72-41-34-300-038 (REPAIR-038)

          3. Fig/item (04-730)

          1. Repair, VRS6313, TASK 72-41-34-300-041 (REPAIR-041)

    7. Figure: Stage 4 Centralizing Pads and Housing Assemblies - Inspection Locations

    Stage 4 Centralizing Pads and Housing Assemblies - Inspection Locations

    Figure: Stage 4 Centralizing Pads and Housing Assemblies - Inspection Locations

    Stage 4 Centralizing Pads and Housing Assemblies - Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE