TASK 72-41-13-200-001-E00 HPC Rear Shaft - Examine, Inspection-001

DMC:V2500-A0-72-41-1301-00E-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-E00 HPC Rear Shaft - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-900

6A7708

General

This TASK gives the procedure for the inspection of the HPC Shaft Assembly. For all other parts of the HP shaft refer to TASK 72-41-13-200-000 (INSPECTION-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 70-20-00-200-501.

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 test before the part is visually inspected.

A ** following repair referenced in this inspection indicates that the repair is not yet published in the current revision of the manual and the part must be rejected. Contact IAE for additional information concerning FAA approved repair date.

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:

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

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

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

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.

NOTE

Fig./item HPC Rear Shaft And Heatshield Assembly (72-41-13, 01-900) 6A7708 is part of HPC rear shaft assembly HPC Rear Shaft And Heatshield Assembly (72-41-13, 01-850) 6A7707.

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 72-41-13-230-091 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

        (Dip or Spray)

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-13-230-106 Focused Inspection of the HPC Shaft Assembly for Cracks

    1. Do a focus inspection of the HPC Shaft Assembly acording to TASK 72-41-13-200-010, Subtask 72-41-13-230-098.

    3. SUBTASK 72-41-13-200-006 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 72-41-13-220-171 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 72-41-13-220-172 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 0.003 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 Step and Step

        1. Reject

    6. SUBTASK 72-41-13-220-173 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 72-41-13-220-174 Examine the HPC Shaft for Wear and Damage on the Rear Slots

    1. Refer to Figure.

      2. NOTE

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

        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. Reject

    8. SUBTASK 72-41-13-220-206 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 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 Step and Step

        1. Reject

    9. SUBTASK 72-41-13-220-175 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 up to 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 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 Step and Step

        1. Reject

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

        1. Accept

        2. Other than Step

        1. Reject

    10. SUBTASK 72-41-13-220-176 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 up to 0.0030 in. (0.076 mm) in depth and there is no high metal

        1. Accept

        2. Other than Step

        1. Reject

    11. SUBTASK 72-41-13-220-177 Examine the HPC Shaft for all Other Surface Damage

    1. Refer to Figure.

      2. Examine the shaft at location 10 and 14 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, 2, 4, 7, 11, 12, 13, 15 and 17 for surface damage.

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

        1. Accept

        2. Other than Step

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

      4. Examine the shaft at locations 3, 5 and 18 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.

        2. Defects made by attached parts that are smooth and up to 0.0050 in (0.125 mm) in depth

        1. Accept

        3. Other than Step and Step

        1. Reject

      5. Examine the shaft at location 8 for surface damage in the holes.

        1. Thin surface scoring or scratches with no high metal

        1. Accept

        2. Other than Step

        1. Reject

      6. Examine the shaft at locations 6 and 19 for surface damage.

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

        1. Accept

        2. Other than Step

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

      7. Examine the shaft at location 16 for surface damage.

        1. Surface damage

        1. Reject

    12. SUBTASK 72-41-13-220-178 Examine the HPC Shaft for Loose Nuts and Damaged Threads on the Clinch Nuts

    1. Refer to Figure.

      2. Examine the shaft at location 9 for loose nuts and damaged threads on the clinch nuts.

        1. Loose nuts and damaged threads

        1. Repair VRS6123, TASK 72-41-13-300-016 (REPAIR-016)

    13. SUBTASK 72-41-13-220-179 Examine the HPC Shaft for the Inner Diameters

    1. Refer to Figure.

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

        1. If the dimension is between 7.998 and 8.002 in. (203.15 and 203.25 mm)

        1. Accept

        2. Other than Step

        1. Reject

      3. Examine the shaft at location 8 for the inner diameter.

        1. If the dimension is between 13.5040 and 13.5060 in. (343.002 and 343.052 mm)

        1. Accept

        2. If the dimension is between 13.5030 and 13.5060 in. (342.976 and 343.052 mm)

        1. 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 72-41-10-44-440-002-A00.

          Accept the part for select fit only

        3. Other than Step

        1. Reject

      4. 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. 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.

          Accept for service run part only

        3. Other than Step

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

    14. SUBTASK 72-41-13-220-180 Examine the HPC Shaft for the Knife Edge Seal Diameter

    1. Refer to Figure.

      2. Examine the shaft at location 3 for the knife edge seal diameter.

        1. If the dimension is between 10.1340 and 10.1360 in. (257.404 and 257.454 mm)

        1. Accept

        2. If the dimension is between 10.1330 and 10.1360 in. (257.378 and 257.454 mm)

        1. 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-A00.

          Accept the part for select fit only

        3. Other than Step

        1. Reject

    15. SUBTASK 72-41-13-220-181 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

    16. SUBTASK 72-41-13-220-182 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 Step

        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 Step

        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 Step

        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 Step

        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 Step

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

    17. Figure: HPC Shaft Inspection Locations

    HPC Shaft Inspection Locations

    Figure: HPC Shaft Inspection Locations

    HPC Shaft Inspection Locations

    Figure: HPC Shaft Inspection Locations

    HPC Shaft Inspection Locations

    Figure: Focused Inspection - Location Splines

    Focused Inspection - Location Splines

    Figure: Focused Inspection - Bolt Holes, Spigot Bore Radius and Mini-Disc Bore

    Focused Inspection - Bolt Holes, Spigot Bore Radius and Mini-Disc Bore

    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 72-41-13-230-106 to link to newly created Task 72-41-12-200-010 for Subtask 72-41-12-230-098 per AD 2004-12-08 and (17VG145)