TASK 72-00-32-220-001-B00 LPC/Intermediate Case Module - Examine The Module Inner At Interface B-32, Inspection-001

DMC:V2500-A5-72-00-3200-00C-310A-B|Issue No:002.00|Issue Date:2018-02-01

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 72-00-32-220-001-B00 LPC/Intermediate Case Module - Examine The Module Inner At Interface B-32, Inspection-001

General

The word 'reject' is used after an interface inspection statement to show that a higher level inspection and possible repair to the damaged part is necessary. Do the higher level inspection procedure as found in the applicable Chapter/Section/Subject of this manual on the damaged part(s). It is not necessary to do the higher level inspection on parts that are serviceable to the interface inspection standard.

Refer to TASK 72-00-00-200-001 (INSPECTION-001) (Examine the modular/non-modular interfaces), before you do this TASK.

The policy that is necessary for inspection is given in the SPM TASK 70-20-01-200-501

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-00-32-220-100 Visually Examine the Stub Shaft at Location 1

    1. Refer to Figure and Figure,

      2. Curvic teeth.

        1. Cracked

        1. Reject

        2. Rusted

        1. Repair, VRS1123 TASK 72-00-32-300-003 (REPAIR-003)

        3. Galled

        1. Repair, VRS1124 TASK 72-00-32-300-004 (REPAIR-004)**

        4. Corroded.

          1. Up to 0.005 in. (0.13 mm)

          1. Accept

          2. More than Step

          1. Repair, VRS1124 TASK 72-00-32-300-004 (REPAIR-004)**

        5. Pitted.

          1. Up to 0.005 in (0.13 mm)

          1. Accept

          2. One pit up to 0.008 in (0.20 mm) in depth on the tooth crest flats only

          1. Accept

          3. More than Step or Step

          1. Repair, VRS1124 TASK 72-00-32-300-004 (REPAIR-004)**

        6. Damaged

        1. Repair, VRS1124 TASK 72-00-32-300-004 (REPAIR-004)**

      3. Pins.

        1. Distorted

        1. Reject

    2. SUBTASK 72-00-32-220-101 Visually Examine the Splitter Fairing at Location 2

    1. Refer to Figure.

      2. Cracked

      1. Reject

      3. Nicked or scratched.

        1. Not more than 0.004 in. (0.10 mm) in depth

        1. Accept

        2. More than Step

        1. Reject

      4. Dented (round bottom).

        1. Not more than 0.010 in. (0.25 mm) in depth

        1. Accept

        2. More than Step

        1. Reject

      5. Anti-erosion coating missing

      1. Accept

      6. Leading edge.

        1. Erosion

        1. Accept

        2. NOTE

          If the depth of erosion has not reached to the inner wall of the splitter fairing.

          More than in Step

        1. Reject

    3. SUBTASK 72-00-32-220-102 Visually Examine the Inlet Guide Vanes at Location 3

    1. Refer to Figure.

      2. Airfoil.

        1. Dented.

          1. Not more than 0.004 in. (0.10 mm) in depth and restricted to one per edge

          1. Accept

          2. More than Step

          1. Reject

        2. Torn

        1. Reject

        3. Cracked

        1. Reject

        4. Nicked or scratched.

          1. Not more than 0.004 in. (0.10 mm) in depth and restricted to one per edge

          1. Accept

          2. More than Step

          1. Reject

      3. Air seal.

        1. Torn.

        1. Reject.

    4. SUBTASK 72-00-32-220-103 Visually Examine the LP Compressor Stages 1.5, 2 and 2.5 Disk Assembly at Locations 4 and 6

    1. Refer to Figure and Figure.

      2. Disk surface.

        1. Scores.

          1. Scores on Location 4.

          1. Reject.

          2. Scores on Location 6.

            1. Scores on circumferential direction.

            1. Reject.

            2. Scores on radial direction and not more than 0.001 in. (0.02 mm) in depth without raised material.

            1. Accept.

            3. More than Step and not more than 0.002 in. (0.05 mm) in depth.

            1. Repair, VRS1993 TASK 72-00-32-300-006 (REPAIR-006).

            4. More than Step.

            1. Reject.

        2. Nicked and dented.

          1. Nicked and dented on Location 4.

          1. Reject.

          2. Nicked and dented on Location 6.

            1. Not more than 0.001 in. (0.02 mm) in depth without raised material.

            1. Accept.

            2. More than Step and not more than 0.002 in. (0.05 mm) in depth.

            1. Repair, VRS1993 TASK 72-00-32-300-006 (REPAIR-006).

            3. More than Step.

            1. Reject.

      3. Counter balance weights.

        1. Loose.

          1. If any weight can be moved axially.

          1. Reject.

          2. Other than in Step

          1. Accept

      4. Double hexagon bolts.

        1. Damaged

        1. Reject

    5. SUBTASK 72-00-32-220-104 Visually Examine the LPC Front Case at Location 5

    1. Refer to Figure.

      2. Abradable rubber seal.

        1. Erosion

        1. Accept

        2. NOTE

          If the metal surface is not fully exposed from front end to rear end of seal.

          More than in Step

        1. Reject

    6. Figure: Locations at interface B-32

    Locations at interface B-32

    Figure: Areas and locations of the LP compressor stage 1.5 to 2.5 rotor disk

    Areas and locations of the LP compressor stage 1.5 to 2.5 rotor disk

    Figure: Enlarged isometric view of curvic teeth

    Enlarged isometric view of curvic teeth

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the visual examination procedure at locations 4 and 6. (94VJ838F)