TASK 72-32-83-200-003 LPC Rear Case - Examine, Inspection-003

DMC:V2500-A0-72-32-8340-00A-300A-C|Issue No:001.00|Issue Date:2013-11-01

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 72-32-83-200-003 LPC Rear Case - Examine, Inspection-003

Effectivity

FIG/ITEM

PART NO.

01-650

5W2055

01-650

5W2037

General

This TASK gives the procedure for the inspection of the LPC rear case. For the LPC STG2 vanes parts, refer to TASK 72-32-83-200-000 (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 70-20-01-200-501.

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 examine 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 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 the parts must be examined to make sure that all the repairs have been completed satisfactorily.

The procedure for crack test is given in SUBTASK 72-32-83-230-000. 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 70-02-02-300-501

Inspection of Parts, SPM TASK 70-20-01-200-501

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 72-32-83-230-058 Examine the LPC Rear Case Assembly (01-650) for Cracks

    1. NOTE

      For the method to clean the parts, refer to the SPM TASK 70-11-33-110-501.

      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. Crack

        1. Reject

    2. SUBTASK 72-32-83-220-072 Examine the LPC Rear Case Assembly (01-650) All Surface

    1. Refer to Figure.

      2. Examine all the surface.

        1. Nicked.

          1. Up to 0.008 in. (0.20 mm) in depth

          1. Accept

          2. More than in Step

          1. Repair, VRS1396 TASK 72-32-83-300-003 (REPAIR-003)

        2. Dented.

          1. Up to 0.008 in. (0.20 mm) in depth

          1. Accept

          2. More than in Step

          1. Repair, VRS1396 TASK 72-32-83-300-003 (REPAIR-003)

        3. Scratched.

          1. Up to 0.008 in. (0.20 mm) in depth

          1. Accept

          2. More than in Step

          1. Repair, VRS1396 TASK 72-32-83-300-003 (REPAIR-003)

        4. Corroded or pitted

        1. Repair, VRS1396 TASK 72-32-83-300-003 (REPAIR-003)

    3. SUBTASK 72-32-83-220-073 Examine the LPC Rear Case Assembly (01-650) Locating Pin

    1. Refer to Figure.

      2. Examine the locating pin at location 1.

        1. Deformation

        1. Repair, VRS1402 TASK 72-32-83-300-016 (REPAIR-016)

        2. Missing

        1. Repair, VRS1402 TASK 72-32-83-300-016 (REPAIR-016)

    4. SUBTASK 72-32-83-220-074 Examine the LPC Rear Case Assembly (01-650) Abradable Coating

    1. Refer to Figure.

      2. Examine the Abradable Coating at location 2.

        1. Deteriorated

        1. Repair, VRS1397 TASK 72-32-83-300-013 (REPAIR-013)

        2. Rubbed, Refer to Figure

          1. Up to 0.030 in. (0.76 mm) in depth

          1. Accept

          2. More than in Step

          1. Repair, VRS1397 TASK 72-32-83-300-013 (REPAIR-013)

        3. Unbonded

        1. Repair, VRS1397 TASK 72-32-83-300-013 (REPAIR-013)

    5. SUBTASK 72-32-83-220-075 Examine the LPC Rear Case Assembly (01-650) Diameter

    1. Refer to Figure.

      2. Examine the diameter at location 3.

        1. Worn.

          1. If the diameter is between 37.357 and 37.362 in. (948.86 and 949.00 mm)

          1. Accept

          2. More than 37.362 in. (949.00 mm)

          1. Repair, VRS1403 TASK 72-32-83-300-017 (REPAIR-017)

      3. Examine the groove at location 4.

        1. Worn.

          1. If the width of the groove is between 0.117 and 0.120 in. (2.95 and 3.05 mm)

          1. Accept

          2. More than 0.120 in. (3.05 mm)

          1. Reject

        2. Scratched

        1. Repair, VRS1396 TASK 72-32-83-300-003 (REPAIR-003)

      4. Examine the snap diameter at location 5.

        1. Worn.

          1. If the diameter is between 35.737 and 35.740 in. (907.70 and 907.80 mm)

          1. Accept

          2. Less than 35.737 in. (907.70 mm)

          1. Repair, VRS1404 TASK 72-32-83-300-018 (REPAIR-018)

      5. Examine the diameter at location 6.

        1. Worn.

          1. If the diameter is between 37.239 and 37.244 in. (945.85 and 946.00 mm)

          1. Accept

          2. More than 37.224 in. (946.00 mm)

          1. Repair, VRS1406 TASK 72-32-83-300-019 (REPAIR-019)

    6. SUBTASK 72-32-83-220-076 Examine the LPC Rear Case Assembly (01-650) Faces

    1. Refer to Figure.

      2. Examine the face A at location 7.

        1. Galled

        1. Repair, VRS1396 TASK 72-32-83-300-003 (REPAIR-003)

      3. Examine the face B at location 8.

        1. Galled

        1. Repair, VRS1396 TASK 72-32-83-300-003 (REPAIR-003)

      4. Examine the face C at location 9.

        1. Galled

        1. Repair, VRS1396 TASK 72-32-83-300-003 (REPAIR-003)

      5. Examine the face D at location 10.

        1. Galled

        1. Repair, VRS1396 TASK 72-32-83-300-003 (REPAIR-003)

    7. SUBTASK 72-32-83-220-233 Examine the LPC Rear Case Assembly (01-650) Nuts

    1. Refer to Figure.

      2. Examine the nuts at location 11.

        1. Loose or missing.

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

          1. Accept

          2. More than in Step

          1. Repair, VRS1374 TASK 72-32-83-300-056 (REPAIR-056)

        2. Damaged.

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

          1. Accept

          2. More than in Step

          1. Repair, VRS1374 TASK 72-32-83-300-056 (REPAIR-056)

    8. SUBTASK 72-32-83-220-234 Examine the LPC Rear Case Assembly (01-650) Washers

    1. Refer to Figure.

      2. Examine the washers at location 12.

        1. Loose or missing

        1. Repair, VRS1375 TASK 72-32-83-300-057 (REPAIR-057)

    9. Figure: Inspection of the LPC Rear Case Assembly

    Inspection of the LPC Rear Case Assembly

Requirements After Job Completion

Follow-On Conditions

NONE