TASK 72-50-24-200-002-C00 LPT Inner Diffuser Duct Support - Examine, Inspection-002

DMC:V2500-A0-72-50-2402-00C-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 72-50-24-200-002-C00 LPT Inner Diffuser Duct Support - Examine, Inspection-002

Effectivity

FIG/ITEM PART NO.

01-100

3A2525

01-100

3A2529

General

This TASK gives the procedure for the inspection of the inner diffuser support. For the other LP turbine inner static seal parts, refer to TASK 72-50-24-200-000 (INSPECTION/CHECK-000).

Fig/item numbers in parentheses in the procedure agree with those used in the IPC.

A ** following any repair referenced in this inspection indicates that the repair is not yet published in the current revision of this manual and the part must be rejected. Contact IAE for additional information concerning FAA approved data.

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 TASK 72-50-24-100-000 (CLEANING-000).

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 must have a crack test is given in SUBTASK 72-50-24-230-113. Do the crack test before the part is visually examined.

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

Record and Control of the Lives of Parts, SPM TASK 70-05-00-220-501

Inspection of Parts, SPM TASK 70-20-00-200-501

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-24-230-113-001 Do a Crack Test on the Inner Diffuser Support (Fluorescent Penetrant)

    1. Clean the parts. Refer to TASK 72-50-24-100-000 (CLEANING-000).

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

      PART IDENT TASK/SUBTASK

      Inner Diffuser Support

      SPM TASK 70-23-02-230-501

      3. Cracked

      1. Reject

    2. SUBTASK 72-50-24-230-113-002 Do a Crack Test on the Inner Diffuser Support (Fluorescent Penetrant)

    1. Clean the parts. Refer to TASK 72-50-24-100-000 (CLEANING-000).

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

      PART IDENT TASK/SUBTASK

      Inner Diffuser Support

      SPM TASK 70-23-01-230-501

      3. Cracked

      1. Reject

    3. SUBTASK 72-50-24-220-197 Examine the Inner Diffuser Support for Surface Damage

      1. Nicked or dented.

        1. Any number, no raised material, 0.005 in. (0.13 mm) maximum depth

        1. Accept

        2. Other than in (1)

        1. Repair, VRS4322 TASK 72-50-24-300-032 (REPAIR-032)

    4. SUBTASK 72-50-24-220-198 Examine the Inner Diffuser Support at Area A1

    1. Refer to: Figure

      2. Fretted.

        1. Maximum 0.003 in. (0.075 mm) depth

        1. Accept

        2. More than in (1)

        1. Repair, VRS4321 TASK 72-50-24-300-035 (REPAIR-035)

    5. SUBTASK 72-50-24-220-199 Examine the Inner Diffuser Support Area A2

    1. Refer to: Figure

      2. Fretted.

        1. Maximum 0.002 in. (0.05 mm) depth

        1. Accept

        2. More than in (1)

        1. Reject

    6. SUBTASK 72-50-24-220-200 Examine the Inner Diffuser Support in Area A3

    1. Refer to: Figure

      2. Examine the wear resistant coating in area A3.

        1. Damaged or missing coating. Up to 24 areas of chipped/removed coating. Each individual areas of chipped/removed coating up to 0.080 sqin. (51.6 sqmm) maximum size

        1. Accept

        2. More than in (1)

        1. Repair, VRS4465 TASK 72-50-24-300-049 (REPAIR-049)**

    7. SUBTASK 72-50-24-220-201 Examine the Inner Diffuser Support at Dimension D1

    1. Refer to: Figure

      2. Worn, measure dimension D1.

        1. Up to 0.1240 in. (3.15 mm) minimum

        1. Accept

        2. Between 0.1240 in. and 0.1209 in. (3.15 and 2.95 mm)

        1. Repair, VRS4465 TASK 72-50-24-300-049 (REPAIR-049)**

        3. Less than in (2)

        1. Repair, VRS4494 TASK 72-50-24-300-050 (REPAIR-050)**

    8. SUBTASK 72-50-24-220-202 Examine the Inner Diffuser Support at Dimension D2

    1. Refer to: Figure

      2. Worn, measure dimension D2.

        1. Between 0.3189 and 0.3070 in. (8.1 and 7.8 mm)

        1. Accept

        2. Less than in (1)

        1. Repair, VRS4320 TASK 72-50-24-300-034 (REPAIR-034)

    9. SUBTASK 72-50-24-220-203 Examine the Headless Shoulder Pin at Dimension D3 of the Inner Diffuser Support

      1. Worn, measure dimension D3.

        1. Between 0.1969 and 0.1899 in. (5.0 and 4.82 mm)

        1. Accept

        2. Less than in (1)

        1. Repair, VRS4319 TASK 72-50-24-300-036 (REPAIR-036)

    10. SUBTASK 72-50-24-220-204 Examine the Clinch Nuts of the Inner Diffuser Support for Damage

      1. Axial movement.

        1. More than 0.010 in. (0.25 mm)

        1. Repair, VRS4318 TASK 72-50-24-300-037 (REPAIR-037)

      2. Worn thread

      1. Repair, VRS4318 TASK 72-50-24-300-037 (REPAIR-037)

      3. Damaged

      1. Repair, VRS4318 TASK 72-50-24-300-037 (REPAIR-037)

    11. Figure: Examine the inner diffuser support

    Examine the inner diffuser support

Requirements After Job Completion

Follow-On Conditions

NONE