TASK 72-32-83-200-007 LPC Mid Case - LPC Mid Case - Examine, Inspection-007

DMC:V2500-A0-72-32-8335-00A-300A-C|Issue No:003.00|Issue Date:2015-05-01

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 72-32-83-200-007 LPC Mid Case - LPC Mid Case - Examine, Inspection-007

Effectivity

FIG/ITEM

PART NO.

02-650

5W2198

General

This TASK gives the procedure for the inspection of the LPC mid case assembly. For other LP compressor stage 1.5 and 2 vanes parts, refer to TASK 72-32-83-200-000 (INSPECTION-000).

Fig/Item number 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 70-20-01-200-501.

All the parts must be cleaned before any part is examined. Refer to TASK 72-32-83-100-000 (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 no repairs available. Refer to the instruction 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 the parts must be examined to make sure that all the repairs have been completed satisfactorily.

The procedure for crack test is given in Step. Do the test before the part is visually examined.

The practices and processes referred to in the procedure by the TASK number are in the SPM.

References

Refer to the SPM for data on these items.

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

Inspection of Parts, SPM TASK 70-02-00-200-501

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

Consumable materials are given in the SPM.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-83-230-063 Examine the LPC Mid Case Assembly (02-650) for Cracks

    1. Clean the parts. Refer to TASK 72-32-83-100-000 (CLEANING-000).

      2. Do the test for cracks on the parts that are given below. Use the applicable penetrant procedure.

        PART IDENT

        TASK/SUBTASK

        LPC mid case assembly

        1. Cracked

        1. Reject

    2. SUBTASK 72-32-83-220-111 Examine the LPC Mid Case Assembly (02-650) Surface

    1. Refer to Figure.

      2. Examine all the surfaces which do not include the identified locations.

        1. Nicked

          1. Not more than 0.008 in. (0.20 mm) in depth.

          1. Accept

          2. More than in Step.

          1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR-020).

        2. Dented

          1. Not more than 0.008 in. (0.20 mm) in depth.

          1. Accept

          2. More than in Step.

          1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR-020).

        3. Scratched

          1. Not more than 0.008 in. (0.20 mm) in depth.

          1. Accept

          2. More than in Step.

          1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR-020).

        4. Corroded or pitted.

        1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR-020).

    3. SUBTASK 72-32-83-220-112 Examine the LPC Mid Case Assembly (02-650) Locating Pin

    1. Refer to Figure.

      2. Examine the locating pin at location 1.

        1. Deformation

        1. Repair, VRS1586 TASK 72-32-83-300-028 (REPAIR-028).

        2. Missing

        1. Repair, VRS1586 TASK 72-32-83-300-028 (REPAIR-028).

    4. SUBTASK 72-32-83-220-113 Examine the LPC Mid Case Assembly (02-650) Faces

    1. Refer to Figure.

      2. Examine the face A and B at location 3 and 4.

        1. Galled

        1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR-020).

        2. Corroded or pitted.

        1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR-020).

        3. Nicked, scratched or dented.

        1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR-020).

    5. SUBTASK 72-32-83-220-114 Examine the LPC Mid Case Assembly (02-650) Abradable Coating

    1. Refer to Figure.

      2. Examine the Abradable Coating at location 2.

        1. Deteriorated

        1. Repair, VRS1585 TASK 72-32-83-300-029 (REPAIR-029).

        2. Rubbed, refer to Figure.

          1. Not more than 0.030 in. (0.76 mm) in depth.

          1. Accept

          2. More than in Step.

          1. Repair, VRS1585 TASK 72-32-83-300-029 (REPAIR-029).

        3. Unbonded

        1. Repair, VRS1585 TASK 72-32-83-300-029 (REPAIR-029).

    6. SUBTASK 72-32-83-220-115 Examine the LPC Mid Case Assembly (02-650) Surface A and B

    1. Refer to Figure.

      2. Examine the surface A at location 5.

        1. Worn

        1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR 020) or VRS1587 TASK 72-32-83-300-030 (REPAIR 030).

        2. NOTE

          Use VRS1587 TASK 72-32-83-300-030 if the damage cannot be removed by VRS1584 TASK 72-32-83-300-020.

        2. Corroded or pitted.

        1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR 020) or VRS1587 TASK 72-32-83-300-030 (REPAIR 030).

        2. NOTE

          Use VRS1587 TASK 72-32-83-300-030 if the damage cannot be removed by VRS1584 TASK 72-32-83-300-020.

        3. Nicked, scratched or dented.

        1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR 020) or VRS1587 TASK 72-32-83-300-030 (REPAIR 030).

        2. NOTE

          Use VRS1587 TASK 72-32-83-300-030 if the damage cannot be removed by VRS1584 TASK 72-32-83-300-020.

      3. Examine the surface B at location 6.

        1. Worn

        1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR 020) or VRS1597 TASK 72-32-83-300-054 (REPAIR 054).

        2. NOTE

          Use VRS1597 TASK 72-32-83-300-054 if the damage cannot be removed by VRS1584 TASK 72-32-83-300-020.

        2. Corroded or pitted.

        1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR 020) or VRS1597 TASK 72-32-83-300-054 (REPAIR 054).

      3. NOTE

        Use VRS1597 TASK 72-32-83-300-054 if the damage cannot be removed by VRS1584 TASK 72-32-83-300-020.

        4. Nicked, scratched or dented.

        1. Repair, VRS1584 TASK 72-32-83-300-020 (REPAIR 020) or VRS1597 TASK 72-32-83-300-054 (REPAIR 054).

      5. NOTE

        Use VRS1597 TASK 72-32-83-300-054 if the damage cannot be removed by VRS1584 TASK 72-32-83-300-020.

    7. SUBTASK 72-32-83-220-215 Examine the LPC Mid Case Assembly (02-650) Press Nuts

    1. Refer to Figure.

      2. Examine the press nuts at location 7.

        1. Loose or missing.

          1. Not more than 3 places per flange, if two consecutive press nuts are not damaged.

          1. Accept

          2. More than in Step.

          1. Repair, VRS1598 TASK 72-32-83-300-052 (REPAIR-052).

        2. Damaged

          1. Not more than 3 places per flange, if two consecutive press nuts are not damaged.

          1. Accept

          2. More than in Step.

          1. Repair, VRS1598 TASK 72-32-83-300-052 (REPAIR-052).

    8. SUBTASK 72-32-83-220-216 Examine the LPC Mid Case Assembly (02-650) Washers

    1. Refer to Figure.

      2. Examine the washers at location 8.

        1. Loose or missing.

        1. Repair, VRS1599 TASK 72-32-83-300-053 (REPAIR-053).

    9. Figure: Location of the LPC Mid Case Assembly

    Location of the LPC Mid Case Assembly

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised format. (editorial change)