TASK 72-41-13-200-001-B00 HPC Rear Shaft - Examine, Inspection-001

DMC:V2500-A0-72-41-1301-00B-300A-C|Issue No:002.00|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-B00 HPC Rear Shaft - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-900

2A1967

01-900

2A1990

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-000).

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 70-20-00-200-501.

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.

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 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,

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 (01-900) 2A1967 is part of HPC rear shaft assembly (01-850) 6A3974 and (01-900) 2A1990 is part of (01-850) 6A3997

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 72-41-13-230-054 Examine the HPC Shaft Assembly (01-900) 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 72-41-13-230-104 Focused Inspection of the HPC Shaft Assembly for Cracks

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

    3. SUBTASK 72-41-13-220-081 Examine the HPC Shaft Assembly (01-900) for Damage, Burrs and High Metal on all the Threads

    1. Refer to Figure.

      2. Examine the shaft assembly at locations 2 and 5 for damage, burrs and high metal on the threads.

        1. Damage, burrs, and high metal

        1. Repair, VRS3519 TASK 72-41-13-300-017 (REPAIR-017)

    4. SUBTASK 72-41-13-220-082 Examine the HPC Shaft Assembly (01-900) for Burrs, Damage, and High Metal and Wear on the Splines

    1. Refer to Figure.

      2. Examine the shaft assembly at location 1 for burrs, damage, fretting, high metal and wear on the splines.

        1. Burrs, damage, fretting, high metal and wear

        1. Repair, VRS3518 TASK 72-41-13-300-018 (REPAIR-018) and VRS3481 TASK 72-41-13-300-015 (REPAIR-015)

    5. SUBTASK 72-41-13-220-083 Examine the HPC Shaft Assembly (01-900) for Scoring, Scratches and Galling at the Location of the Heatshield on the Shaft Inner Diameter

    1. Refer to Figure.

      2. Examine the shaft assembly 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. Repairs, VRS3445 TASK 72-41-13-300-001 (REPAIR-001) and VRS3466 TASK 72-41-13-300-014 (REPAIR-014)

    6. SUBTASK 72-41-13-220-084 Examine the HPC Shaft Assembly (01-900) for Wear and Damage in the Front Slots

    1. Refer to Figure.

      2. Examine the shaft assembly 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. Repair, VRS3445 TASK 72-41-13-300-001 (REPAIR-001)

    7. SUBTASK 72-41-13-220-085 Examine the HPC Shaft Assembly (01-900) 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, Refer to Figure.

        Examine the shaft assembly 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 72-41-13-220-086 Examine the HPC Shaft Assembly (01-900) 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 assembly at location 1 and location 7 for scoring scratches and galling on the shaft outer 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. Repairs, VRS3445 TASK 72-41-13-300-001 (REPAIR-001), VRS3447 TASK 72-41-13-300-008 (REPAIR-008) and VRS3636 TASK 72-41-13-300-030 (REPAIR-030)

    9. SUBTASK 72-41-13-220-087 Examine the HPC Shaft Assembly (01-900) for Galling, Scoring and Scratches on the Shaft Outer Diameters

    1. Refer to Figure.

      2. Examine the shaft assembly 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 0.003 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. Repair, VRS3461 TASK 72-41-13-300-002 (REPAIR-002)

      3. Examine the shaft assembly 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 0.003 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. Repair, VRS3461 TASK 72-41-13-300-002 (REPAIR-002)

      4. Examine the shaft assembly 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 0.003 in. (0.076 mm) in depth and there is no high metal

        1. Accept

        2. Other than Step

        1. Repair, VRS3461 TASK 72-41-13-300-002 (REPAIR-002)

    10. SUBTASK 72-41-13-220-088 Examine the HPC Shaft Assembly (01-900) for Scoring and Scratches at the HPT Nut Pilot Diameter Location on the Shaft Outer Diameter

    1. Refer to Figure.

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

        1. Scoring and scratches up to 0.003 in. (0.076 mm) in depth and there is no high metal

        1. Accept

        2. Other than Step

        1. Repair, VRS3461 TASK 72-41-13-300-002 (REPAIR-002)

    11. SUBTASK 72-41-13-220-089 Examine the HPC Shaft Assembly (01-900) for all Other Surface Damage

    1. Refer to Figure.

      2. Examine the shaft assembly at locations 10, 14 and 16 for surface damage.

        1. Surface damage that is not repaired

        1. Repair, VRS3445 TASK 72-41-13-300-001 (REPAIR-001)

      3. Examine the shaft assembly at locations 1, 2, 4, 7, 11, 12, 13, 15 and 17 for surface damage.

        1. Surface damage up to 0.003 in. (0.076 mm) in depth

        1. Accept

        2. Other than Step

        1. Repair, VRS3445 TASK 72-41-13-300-001 (REPAIR-001)

      4. Examine the shaft assembly at locations 3, 5 and 18 for surface damage.

        1. Isolated surface damage 0.003 in. (0.076 mm) in depth. No damage within 0.125 in. (3.175 mm) of the holes unless there is surface defects. Defects made by attached parts that are smooth and up to 0.005 in (0.125 mm) in depth

        1. Accept

        2. Other than Step

        1. Repair, VRS3445 TASK 72-41-13-300-001 (REPAIR-001)

      5. Examine the shaft assembly at location 8 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 Step

        1. Repair, VRS3445 TASK 72-41-13-300-001 (REPAIR-001)

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

        1. Surface damage up to 0.003 in. (0.076 mm) in depth

        1. Accept

        2. Other than Step

        1. Repair, VRS3445 TASK 72-41-13-300-001 (REPAIR-001)

    12. SUBTASK 72-41-13-220-090 Examine the HPC Shaft Assembly (01-900) for Loose Nuts and Damaged Threads on the Clinch Nuts

    1. Refer to Figure.

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

        1. Loose nuts and damaged threads

        1. Repair, VRS6123 TASK 72-41-13-330-009 (REPAIR-009)

    13. SUBTASK 72-41-13-220-091 Examine the HPC Shaft Assembly (01-900) for the Inner Diameters

    1. Refer to Figure.

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

        1. If the dimension is between 7.998 and 8.002 in. (203.150 and 203.250 mm)

        1. Accept

        2. Other than Step

        1. Reject

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

        1. If the dimension is between 13.504 and 13.506 in. (343.002 and 343.052 mm)

        1. Accept

        2. Other than Step

        1. Repair, VRS3449 TASK 72-41-13-300-010 (REPAIR-010)

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

        1. If the dimension is between 4.646 and 4.647 in. (118.009 and 118.033 mm)

        1. Accept

        2. Other than Step

        1. Repair, VRS3466 TASK 72-41-13-300-014 (REPAIR-014)

    14. SUBTASK 72-41-13-220-092 Examine the HPC Shaft Assembly (01-900) for the Knife Edge Seal Diameter

    1. Refer to Figure.

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

        1. If the dimension is between 10.134 and 10.136 in. (257.404 and 257.454 mm)

        1. Accept

        2. Other than Step

        1. Repair, VRS3450 TASK 72-41-13-300-011 (REPAIR-011)

    15. SUBTASK 72-41-13-220-093 Examine the HPC Shaft Assembly (01-900) for the Outer Diameters

    1. Refer to Figure.

      2. Examine the shaft assembly at location 1 for the outer diameter (Reference No. 2229).

        1. If the dimension is between 5.127 and 5.129 in. (130.226 and 130.276 mm)

        1. Accept

        2. Other than Step

        1. Repair, VRS3447 TASK 72-41-13-300-008 (REPAIR-008)

      3. Examine the shaft assembly at location 2 for the outer diameter (Reference No. 2395).

        1. If the dimension is between 5.1184 and 5.1191 in. (130.0074 and 130.0251 mm)

        1. Accept

        2. Other than Step

        1. Repair, VRS3447 TASK 72-41-13-300-008 (REPAIR-008)

      4. Examine the shaft assembly at location 3 for the outer diameter (Reference No. 2246).

        1. If the dimension is between 5.107 and 5.108 in. (129.718 and 129.743 mm)

        1. Accept

        2. Other than Step

        1. Repair, VRS3447 TASK 72-41-13-300-008 (REPAIR-008)

      5. Examine the shaft assembly at location 4 for the outer diameter (Reference No. 2249).

        1. If the dimension is between 4.841 and 4.842 in. (122.962 and 122.986 mm)

        1. Accept

        2. Other than Step

        1. Repair, VRS3462 TASK 72-41-13-300-013 (REPAIR-013)

      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)

    16. 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 - 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

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Updated Subtask 72-41-13-230-104 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)