TASK 72-32-83-200-005 LPC Rear Case - Examine, Inspection-005

DMC:V2500-A0-72-32-8340-01A-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 72-32-83-200-005 LPC Rear Case - Examine, Inspection-005

Effectivity

FIG/ITEM

PART NO.

02-900

5W2196

General

This TASK gives the procedure for the inspection of the LPC rear 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 70-20-00-200-501

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 72-32-83-230-062 Examine the LPC Rear Case Assembly (02-900) 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 rear case assembly

        1. Cracked

        1. Reject

    2. SUBTASK 72-32-83-230-102 Examine the LPC Rear Case Assembly (02-900) Surface

    1. Refer to Figure.

      2. Examine all the surface 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, VRS1588 TASK 72-32-83-300-021 (REPAIR-021).

        2. Dented

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

          1. Accept

          2. More than in Step.

          1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR-021).

        3. Scratched.

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

          1. Accept

          2. More than in Step.

          1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR-021).

        4. Corroded or pitted.

        1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR-021).

    3. SUBTASK 72-32-83-220-103 Examine the LPC Rear Case Assembly (02-900) Plate Nuts

    1. Refer to Figure.

      2. Examine the plate nuts at location 1.

        1. Damage

        1. Repair, VRS1593 TASK 72-32-83-300-022 (REPAIR-022).

        2. Loosened rivet

        1. Repair, VRS1593 TASK 72-32-83-300-022 (REPAIR-022).

    4. SUBTASK 72-32-83-220-104 Examine the LPC Rear Case Assembly (02-900) Sleeves and/or Sleeve Holes

    1. Refer to Figure.

      2. Examine the sleeves and/or sleeve holes at location 2.

        1. Missing or looseness.

        1. Measure the diameter of sleeve hole.

          2. Less than or equal to 0.4388 in. (11.145 mm).

          1. Repair, VRS1595 TASK 72-32-83-300-023 (REPAIR-023).

          3. If the diameter is greater than 0.4388 in. (11.145 mm) and less than or equal to 0.4488 in. (11.399 mm).

          1. Repair, VRS1608 TASK 72-32-83-300-058 (REPAIR-058).

          4. If the diameter is greater than 0.4488 in. (11.399 mm) and less than or equal to 0.4588 in. (11.653 mm).

          1. Repair, VRS1609 TASK 72-32-83-300-059 (REPAIR-059).

          5. Greater than 0.4588 in. (11.653 mm).

          1. Reject

        2. Wear

        1. Repair, VRS1595 TASK 72-32-83-300-023 (REPAIR-023).

        3. Damaged

        1. Repair, VRS1595 TASK 72-32-83-300-023 (REPAIR-023).

    5. SUBTASK 72-32-83-220-105 Examine the LPC Rear Case Assembly (02-900) Boss

    1. Refer to Figure.

      2. Examine the boss at location 3.

        1. Damage

        1. Repair, VRS1590 TASK 72-32-83-300-024 (REPAIR-024).

        2. Loosened rivet

        1. Repair, VRS1590 TASK 72-32-83-300-024 (REPAIR-024).

    6. SUBTASK 72-32-83-220-106 Examine the LPC Rear Case Assembly (02-900) Abradable Coating

    1. Refer to Figure.

      2. Examine the abradable coating at location 4.

        1. Deteriorated

        1. Repair, VRS1589 TASK 72-32-83-300-025 (REPAIR-025).

        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. Accept, VRS1589 TASK 72-32-83-300-025 (REPAIR-025).

        3. Unbonded

        1. Repair, VRS1589 TASK 72-32-83-300-025 (REPAIR-025).

    7. SUBTASK 72-32-83-220-107 Examine the LPC Rear Case Assembly (02-900) Faces

    1. Refer to Figure.

      2. Examine the face A, B, C and D at location 7, 8, 9 and 10.

        1. Galled

        1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR-021).

        2. Corroded or pitted

        1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR-021).

        3. Nicked, scratched or dented.

        1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR-021).

    8. SUBTASK 72-32-83-220-108 Examine the LPC Rear Case Assembly (02-900) Grooves

    1. Refer to Figure.

      2. Examine the groove A at location 5.

        1. Worn.

          1. If the width is between 0.100 and 0.105 in. (2.525 and 2.675 mm).

          1. Accept

          2. More than 0.105 in. (2.675 mm).

          1. Reject

        2. Scratched

        1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR-021).

      3. Examine the groove B at location 6.

        1. Worn.

          1. If the width is between 0.103 and 0.108 in. (2.6 and 2.75 mm).

          1. Accept

          2. More than 0.108 in. (2.75 mm).

          1. Reject

        2. Scratched

        1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR-021).

    9. SUBTASK 72-32-83-220-109 Examine the LPC Rear Case Assembly (02-900) Surface E and F

    1. Refer to Figure.

      2. Examine the surface E at location 11.

        1. Worn

        1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR 021) or VRS1591 TASK 72-32-83-300-026 (REPAIR 026).

      2. NOTE

        Use VRS1591 TASK 72-32-83-300-026 if the damage cannot be removed by VRS1588 TASK 72-32-83-300-021.

        3. Corroded or pitted

        1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR 021) or VRS1591 TASK 72-32-83-300-026 (REPAIR 026).

      4. NOTE

        Use VRS1591 TASK 72-32-83-300-026 if the damage cannot be removed by VRS1588 TASK 72-32-83-300-021.

        5. Nicked, scratched or dented.

        1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR 021) or VRS1591 TASK 72-32-83-300-026 (REPAIR 026).

      6. NOTE

        Use VRS1591 TASK 72-32-83-300-026 if the damage cannot be removed by VRS1588 TASK 72-32-83-300-021.

      3. Examine the surface F at location 12.

        1. Worn

        1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR 021) or VRS1592 TASK 72-32-83-300-027 (REPAIR 027).

      2. NOTE

        Use VRS1592 TASK 72-32-83-300-027 if the damage cannot be removed by VRS1588 TASK 72-32-83-300-021.

        3. Corroded or pitted.

        1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR 021) or VRS1592 TASK 72-32-83-300-027 (REPAIR 027).

      4. NOTE

        Use VRS1592 TASK 72-32-83-300-027 if the damage cannot be removed by VRS1588 TASK 72-32-83-300-021.

        5. Nicked, scratched or dented.

        1. Repair, VRS1588 TASK 72-32-83-300-021 (REPAIR 021) or VRS1592 TASK 72-32-83-300-027 (REPAIR 027).

      6. NOTE

        Use VRS1592 TASK 72-32-83-300-027 if the damage cannot be removed by VRS1588 TASK 72-32-83-300-021.

    10. Figure: Inspection of the LPC Rear Case Assembly

    Inspection of the LPC Rear Case Assembly

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised format. (editorial change)