TASK 72-41-13-200-001-F00 HPC Rear Shaft - Examine, Inspection-001

DMC:V2500-A0-72-41-1301-00F-300A-C|Issue No:003.00|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

All

Common Information

TASK 72-41-13-200-001-F00 HPC Rear Shaft - Examine, Inspection-001

Effectivity

FIG/ITEM PART No.

01-900

6A7712

01-900

6A7714

General

This TASK gives the procedure for the inspection of the HPC Shaft Assembly. For all other parts of the HP compressor shaft refer to TASK 72-41-13-200-000 (INSPECTION/CHECK-000).

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 the SPM TASK 70-20-01-200-501.

All the parts must be cleaned before any part is examined. Refer to the SPM TASK 70-10-00-100-501.

All 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 have a crack test is given in Step. Do the crack 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 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:

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

Recording and Control of Component Lives, SPM TASK 70-05-00-220-501,

Surface Texture, SPM TASK 70-35-09-350-501,

Inspection of Parts, SPM 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.

NOTE

Fig./item HPC Rear Shaft And Heatshield Assembly (72-41-13,01-900) 6A7712 is part of HP compressor rear shaft assembly HPC Rear Shaft And Heatshield Assembly (72-41-13,01-850) 6A7711 and 6B1419 and HPC Rear Shaft And Heatshield Assembly (72-41-13,01-900) 6A7714 is part of HP compressor rear shaft assembly HPC Rear Shaft And Heatshield Assembly (72-41-13,01-850) 6A7713 and 6B1426.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

CAUTION

THE WORD FOCUS, SPECIFIED IN SUBTASK TITLES, INDICATES CRITICAL LOCATIONS ON COMPONENTS TO WHICH SPECIAL ATTENTION MUST BE GIVEN.

Procedure

    1. SUBTASK 72-41-13-230-092 Examine the HPC Shaft for Cracks

    1. Clean the Part. Refer to the TASK 72-41-13-100-000 (CLEANING-000).

      2. Do the test for cracks on the part that is given below. Use the applicable penetrant procedure.

        PART IDENT TASK/SUBTASK

        HPC shaft assembly

        (Dip or Spray)

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-13-230-107 Focused Inspection of the HPC Shaft Assembly for Cracks

    1. Do a focus inspection of the HPC Shaft assembly according to TASK 72-41-13-200-009, Subtask 72-41-13-230-097.

    3. SUBTASK 72-41-13-200-005 Examine the HPC Shaft for Damage, Burrs and High Metal on all Threads

    1. Refer to Figure.

      2. Examine the shaft at location 2 for damage, burrs and high metal on the threads.

        1. Nicks.

          1. Up to 0.030 in. (0.75 mm) in depth.

          1. Repair, VRS6617 TASK 72-41-13-300-026 (REPAIR-026).

          2. Greater than in Step.

          1. Reject.

        2. High metal or burrs.

        1. Repair, VRS6617 TASK 72-41-13-300-026 (REPAIR-026).

      3. Examine the shaft at location 5 for damage, burrs and high material on the threads.

        1. Nicks.

          1. Up to 0.014 in. (0.36 mm) in depth.

          1. Repair, VRS6617 TASK 72-41-13-300-026 (REPAIR-026).

          2. Greater than in Step.

          1. Reject.

        2. High metal or burrs.

        1. Repair, VRS6617 TASK 72-41-13-300-026 (REPAIR-026).

    4. SUBTASK 72-41-13-220-184 Examine the HPC Shaft Splines

    1. Refer to Figure and Figure.

      2. Examine the non-pressure faces of the splines at location 1.

        1. Pitting or corrosion.

          1. Not more than 0.003 in. (0.08 mm) in depth and/or circumference.

          1. Repair, VRS6516 Part 1 TASK 72-41-13-300-031 (REPAIR-031).

          2. Greater than Step.

          1. Reject.

        2. Nicks, dents, scratches or scoring.

          1. Not more than 0.0016 in. (0.04 mm) in depth and not more than 0.039 in. (1.00 mm) in width.

          1. Repair, VRS6516 Part 2 TASK 72-41-13-300-031 (REPAIR-031).

          2. Greater than Step.

          1. Reject.

      3. Examine the top face or end face of the splines at location 1.

        1. Pitting, corrosion or fretting.

          1. Not more than 0.0079 in. (0.20 mm) in depth and/or circumference.

          1. Repair, VRS6516 Part 1 TASK 72-41-13-300-031 (REPAIR-031).

          2. Greater than Step.

          1. Reject.

        2. Nicks, dents, scratches or scoring.

          1. Not more than 0.004 in. (0.10 mm) in depth and not more than 0.039 in. (1.00 mm) in width.

          1. Repair, VRS6516 Part 2 TASK 72-41-13-300-031 (REPAIR-031).

          2. Greater than Step.

          1. Reject.

      4. Examine the pressure face of the spline at location 1.

        1. Pitting or corrosion.

          1. Not more than 0.001 in. (0.03 mm) in depth and/or circumference.

          1. Repair, VRS6516 Part 3 TASK 72-41-13-300-031 (REPAIR-031).

          2. Greater than Step.

          1. Reject.

        2. Nicks, dents, scratches, scoring, galling or fretting.

          1. Not more than 0.001 in. (0.03 mm) in depth and not more than 0.079 in. (2.00 mm) in width.

          1. Repair, VRS6516 Part 3 TASK 72-41-13-300-031 (REPAIR-031).

          2. Greater than Step.

          1. Reject.

    5. SUBTASK 72-41-13-220-185 Examine the HPC Shaft for Scoring, Scratches and Galling at the Location of the Heatshield on the Shaft Inner Diameter

    1. Refer to Figure.

      2. Examine the shaft at location 4 for scoring scratches and galling on the shaft inner diameter.

        1. Scoring and scratches up to 0.0030 in. (0.076 mm) in depth and there is no high metal

        1. Accept

        2. Galling if there is no high metal

        1. Accept

        3. Other than (1) and (2)

        1. Reject

    6. SUBTASK 72-41-13-220-186 Examine the HPC Shaft for Wear and Damage in the Front Slots

    1. Refer to Figure.

      2. Examine the shaft at location 6 for wear and damage in the front slots (3 positions).

        1. Wear and damage.

          1. High metal in the slot or on the slot edges

          1. Reject

    7. SUBTASK 72-41-13-220-187 Examine the HPC Shaft for Wear and Damage on the Rear Slots

    1. Refer to Figure.

      NOTE

      It is permitted for 2 tangs to be fully machined off and/or 1 tang to be half machined off at new production.

      2. Examine the shaft at location 6 for wear and damage in the rear slots (10 positions).

        1. Wear and damage.

          1. High metal in the slot or on the slot edge

          1. Repair VRS6088, TASK 72-41-13-300-019 (REPAIR-019)

    8. SUBTASK 72-41-13-220-188 Examine the HPC Shaft for Scoring, Scratches and Galling at the Location of the Carbon Seal Plate and Oil Slinger Ring on the Shaft Outer Diameter

    1. Refer to Figure.

      2. Examine the shaft at location 1 for scoring scratches and galling on the shaft outer diameter.

        1. Scoring and scratches not more than 0.0030 in. (0.076 mm) in depth and there is no high metal

        1. Accept

        2. Galling if there is no high metal

        1. Accept

        3. Other than (1) and (2)

        1. Repair VRS6088, TASK 72-41-13-300-019 (REPAIR-019)

    9. SUBTASK 72-41-13-220-189 Examine the HPC Shaft for Galling, Scoring and Scratches on the Shaft Outer Diameters

    1. Refer to Figure.

      2. Examine the shaft at location 2 for galling, scoring and scratches at the No. 4 bearing location on the shaft outer diameter.

        1. Scoring and scratches not more than 0.0030 in. (0.076 mm) in depth and there is no high metal

        1. Accept

        2. Galling

        1. Reject

      3. Examine the shaft at location 3 for galling, scoring and scratches at the rear carbon seal plate, gage spacer and the Stage 1 turbine hub diameter locations on the shaft outer diameter.

        1. Scoring and scratches not more than 0.0030 in. (0.076 mm) in depth and there is no high metal

        1. Accept

        2. Galling if there is no high metal

        1. Accept

        3. Other than (1) and (2)

        1. Repair VRS6088, TASK 72-41-13-300-019 (REPAIR-019)

      4. Examine the shaft at location 4 for scoring and scratches at the stage 2 turbine hub diameter location on the shaft outer diameter.

        1. Scoring and scratches not more than 0.0030 in. (0.076 mm) in depth and there is no high metal

        1. Accept

        2. Other than (1)

        1. Repair VRS6088, TASK 72-41-13-300-019 (REPAIR-019)

    10. SUBTASK 72-41-13-220-190 Examine the HPC Shaft for Scoring and Scratches at the HPT Nut Pilot Diameter Location on the Shaft Outer Diameter

    1. Refer to Figure.

      2. Examine the shaft at location 5 for scoring and scratches on the outer diameter.

        1. Scoring and scratches not more than 0.0030 in. (0.076 mm) in depth and there is no high metal

        1. Accept

        2. Other than (1)

        1. Repair VRS6088, TASK 72-41-13-300-019 (REPAIR-019)

    11. SUBTASK 72-41-13-220-191 Examine the HPC Shaft for all Other Surface Damage

    1. Refer to Figure.

      2. Examine the shaft at locations 4, 6 and 10 for surface damage.

        1. Surface damage that is not repaired

        1. Repair VRS6088, TASK 72-41-13-300-019 (REPAIR-019)

      3. Examine the shaft at locations 1, 3, 7, 8, 9, 11 and 14 for surface damage.

        1. Surface damage up to 0.0030 in. (0.076 mm) in depth

        1. Accept

        2. Other than (1)

        1. Repair VRS6088, TASK 72-41-13-300-019 (REPAIR-019)

      4. Examine the shaft at locations 2 and 12 for surface damage.

        1. Isolated surface damage 0.0030 in. (0.076 mm) in depth. No damage within 0.1250 in. (3.175 mm) of the holes unless there is surface defects. Defects made by attached parts that are smooth and up to 0.0050 in. (0.125 mm) in depth

        1. Accept

        2. Other than (1)

        1. Reject

      5. Examine the shaft at location 5 for surface damage in the holes.

        1. Thin surface scoring or scratches with no high metal. No surface damage in the holes

        1. Accept

        2. Other than (1)

        1. Reject

      6. Examine the shaft at location 13 for surface damage.

        1. Surface damage up to 0.0030 in. (0.076 mm) in depth

        1. Accept

        2. Other than (1)

        1. Repair VRS6088, TASK 72-41-13-300-019 (REAPIR-019)

    12. SUBTASK 72-41-13-220-192 Examine the HPC Shaft for the Inner Diameters

    1. Refer to Figure.

      2. Examine the shaft at location 7 for the inner diameter.

        1. If the dimension is between 9.8031 and 9.8050 in. (249.000 and 249.047 mm)

        1. Accept

        2. If the dimension is between 9.8020 and 9.8050 in. (248.971 and 249.047 mm)

        1. Accept the part for select fit only.

          NOTE

          This part can be used only if the mating part has a diameter that will result in fit of reference No. 1007. Refer to TASK 72-41-10-440-002-B00.

        3. Other than (2)

        1. Reject

      3. Examine the shaft at location 4 for the inner diameter.

        1. If the dimension is between 4.6460 and 4.6470 in. (118.008 and 118.033 mm)

        1. Accept

        2. If the dimension is between 4.6440 and 4.6470 in. (117.958 and 118.033 mm)

        1. Accept for service run part only

          NOTE

          This part can be used only if the Heatshield conforms with the dimensions as referenced in TASK 72-41-13-200-002, SUBTASK 72-41-13-220-051.

        3. Other than (2)

        1. Repair VRS6510, TASK 72-41-13-300-025 (REPAIR-025)

      4. Examine the shaft at location 3 for the inner diameter.

        1. If the dimension is between 9.7598 and 9.7627 in. (247.900 and 247.973 mm)

        1. Accept

        2. If the dimension is between 9.7580 and 9.7627 in. (247.853 and 247.973 mm)

        1. Accept the part for select fit only

          NOTE

          This part can be used only if the mating part has a diameter that will result in fit of reference No. 1008. Refer to TASK 72-41-10-440-002-B00.

        3. Other than (2)

        1. Reject

    13. SUBTASK 72-41-13-220-193 Examine the HPC Shaft at Location 2, the No. 4 Bearing Location Coating

    1. Refer to Figure.

      2. Coating, No. 4 bearing location diameter.

        1. Chipped or coating not there

        1. Reject

    14. SUBTASK 72-41-13-220-194 Examine the HPC Shaft for the Outer Diameters

    1. Refer to Figure.

      2. Examine the shaft at location 1 for the outer diameter.

        1. If the dimension is between 5.1270 and 5.1290 in. (130.226 and 130.276 mm)

        1. Accept

        2. Other than (1)

        1. Repair VRS6509, TASK 72-41-13-300-024 (REPAIR-024)

      3. Examine the shaft at location 2 for the outer diameter.

        1. If the dimension is between 5.1184 and 5.1191 in. (130.007 and 130.025 mm)

        1. Accept

        2. Other than (1)

        1. Reject

      4. Examine the shaft at location 3 for the outer diameter.

        1. If the dimension is between 5.1070 and 5.1080 in. (129.718 and 129.743 mm)

        1. Accept

        2. Other than (1)

        1. Repair VRS6509, TASK 72-41-13-300-024 (REPAIR-024)

      5. Examine the shaft at location 4 for the outer diameter.

        1. If the dimension is between 4.8410 and 4.8420 in. (122.962 and 122.986 mm)

        1. Accept

        2. Other than (1)

        1. Repair VRS6509, TASK 72-41-13-300-024 (REPAIR-024)

      6. Examine the shaft assembly at location 7 for axial location.

        1. No frettage

        1. Accept

        2. Other than (1)

        1. Repair VRS6662, TASK 72-41-13-300-029 (REPAIR-029)

    15. Figure: HPC Shaft Assembly Inspection Locations

    HPC Shaft Assembly Inspection Locations

    Figure: HPC Shaft Assembly Inspection Locations

    HPC Shaft Assembly Inspection Locations

    Figure: HPC Shaft Assembly Inspection Locations

    HPC Shaft Assembly Inspection Locations

    Figure: Focused Inspection - Bolt Holes

    Focused Inspection - Bolt Holes

    Figure: Focused Inspection - Location Splines

    Focused Inspection - Location Splines

    Figure: HP Compressor Rear Shaft Spline Inspection Locations

    HP Compressor Rear Shaft Spline Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Updated Subtask 72-41-13-230-107 to link to newly created Task 72-41-12-200-009 for Subtask 72-41-12-230-097 per AD 2004-12-08 and (17VG145)