TASK 72-41-31-200-010-C00 HPC Front Case Bushes - Examine, Inspection-010

DMC:V2500-A5-72-41-3130-00C-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

V2500-A5

Common Information

TASK 72-41-31-200-010-C00 HPC Front Case Bushes - Examine, Inspection-010

Effectivity

FIG/ITEM

PART NUMBER

01-244

6B1138

01-248

6B1139

01-254

6B1142

01-264

6B1141

01-274

6B1140

01-293

6B1143

01-294

6B1142

General

This TASK gives the procedure for the inspection of the casing bushes.

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 EIPC.

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 72-41-31-100-000 (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.

Do not discard any part until you are sure there are not repairs available. Refer to the instructions in Repair before a discarded part is used again or oversize parts are installed.

Parts which must 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 numbers are in the SPM.

References

Refer to the SPM for data on these items:

Definitions of damage, TASK 70-02-02-350-501,

Record and control of the lives of parts, TASK 70-05-00-220-501,

Inspection of parts, TASK 70-20-01-200-501.

Some data on these items are 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 72-41-31-220-274 Measure the Casing Bush Outer Diameter at Location 1

    1. Refer to Figure.

    2. Bush HP COMPRESSOR SPLIT CASE (72-41-31,01-244) and HP COMPRESSOR SPLIT CASE (72-41-31,01-248)

      3. If the outer diameter is between 0.6559 to 0.6575 in. (16.660 to 16.700 mm)

      1. Accept

      4. Less than in step B.(1)

      1. Reject

    5. Bush HP COMPRESSOR SPLIT CASE (72-41-31,01-254), HP COMPRESSOR SPLIT CASE (72-41-31,01-293) and HP COMPRESSOR SPLIT CASE (72-41-31,01-294)

      6. If the outer diameter is between 0.5769 to 0.5785 in. (14.655 to 14.695 mm)

      1. Accept

      7. Less than in step C.(1)

      1. Reject

    8. Bush HP COMPRESSOR SPLIT CASE (72-41-31,01-264) and HP COMPRESSOR SPLIT CASE (72-41-31,01-274)

      9. If the outer diameter is between 0.7346 to 0.7362 in. (18.660 to 18.700 mm)

      1. Accept

      10. Less than in step D.(1)

      1. Reject

    2. SUBTASK 72-41-31-220-275 Examine the Casing Bush at Location 1

    1. Refer to Figure.

    2. Scratched

      3. Not more than 0.002 in. (0.05 mm) in depth

      1. Accept

      4. More than in step B.(1)

      1. Reject

    5. Galled

      6. Not more than 0.002 in. (0.05 mm) in depth

      1. Accept

      7. More than in step C.(1)

      1. Reject

    3. SUBTASK 72-41-31-220-276 Measure the Casing Bush Bore Diameter at Location 2

    1. Refer to Figure.

    2. Bush HP COMPRESSOR SPLIT CASE (72-41-31,01-244) and HP COMPRESSOR SPLIT CASE (72-41-31,01-248)

      3. If the bore diameter is between 0.5539 to 0.5555 in. (14.070 to 14.110 mm)

      1. Accept

      4. More than in step B.(1)

      1. Reject

    5. Bush HP COMPRESSOR SPLIT CASE (72-41-31,01-254), HP COMPRESSOR SPLIT CASE (72-41-31,01-293) and HP COMPRESSOR SPLIT CASE (72-41-31,01-294)

      6. If the bore diameter is between 0.4756 to 0.4772 in. (12.080 to 12.120 mm)

      1. Accept

      7. More than in step C.(1)

      1. Reject

    8. Bush HP COMPRESSOR SPLIT CASE (72-41-31,01-264) and HP COMPRESSOR SPLIT CASE (72-41-31,01-274)

      9. If the bore diameter is between 0.6335 to 0.6351 in. (16.091 to 16.131 mm)

      1. Accept

      10. More than in step D.(1)

      1. Reject

    4. SUBTASK 72-41-31-220-277 Examine the Casing Bush Bore at Location 2

    1. Refer to Figure.

    2. Scored

      3. Not more than 0.002 in. (0.05 mm) in depth

      1. Accept

      4. More than in step B.(1)

      1. Reject

    5. Scratched

      6. Not more than 0.002 in. (0.05 mm) in depth

      1. Accept

      7. More than in step C.(1)

      1. Reject

    5. SUBTASK 72-41-31-220-278 Examine the Casing Bush Face at Location 3

    1. Refer to Figure.

    2. Galled

      3. Not more than 0.002 in. (0.05 mm) in depth

      1. Accept

      4. More than in step B.(1)

      1. Reject

    6. SUBTASK 72-41-31-220-279 Examine the Casing Bush Face at Location 4

    1. Refer to Figure.

    2. Scored

      3. Not more than 0.002 in. (0.05 mm) in depth

      1. Accept

      4. More than in step B.(1)

      1. Reject

    7. Figure: Casing Bush Inspection Locations

    Casing Bush Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE