TASK 72-50-24-200-003-D00 LPT Inner Diffuser Duct Support Ring - Examine, Inspection-003

DMC:V2500-A0-72-50-2403-00D-300A-C|Issue No:002.00|Issue Date:2016-08-01

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 72-50-24-200-003-D00 LPT Inner Diffuser Duct Support Ring - Examine, Inspection-003

Effectivity

FIG/ITEM PART NO.

01-170

3A2523

General

This TASK gives the procedure for the inspection of the support ring. 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 EIPC.

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 Step. 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 72-50-24-230-001 Examine the Support Ring for Cracks

    1. Refer to Figure.

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

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

      PART IDENT

      TASK/SUBTASK

      Support Ring

      4. Cracked.

        1. Cracked within areas A2 and A4 starting at fillet radius

        1. Accept

        2. Cracks starting in areas A2 and extending into area A3 and A5 not more than 0.800 in. (20.32 mm) total length

        1. Repair VRS4497, TASK 72-50-24-300-051 (REPAIR-051)

          NOTE

          If necessary to find end of cracks in areas A3 and A5, remove coating carefully. Blend to remove coating within specified limits for chipped / removed coating.

        3. Cracked coating in area A1

        1. Repair VRS4466, TASK 72-50-24-300-053 (REPAIR-053)

        4. Cracked in coating area A5

        1. Repair VRS4309, TASK 72-50-24-300-039 (REPAIR-039)

        5. Other than in Step, Step, Step and Step

        1. Reject

    2. SUBTASK 72-50-24-220-001 Examine the Support Ring for Surface Damage

      1. Nicked, dented.

        1. Not more than 0.004 in. (0.10 mm) in depth, no raised material

        1. Accept

        2. More than in Step

        1. Repair VRS4310, TASK 72-50-24-300-040 (REPAIR-040)

    3. SUBTASK 72-50-24-220-002 Examine the Support Ring in Area A1 for Wear

    1. Refer to Figure.

      2. Damaged or chipped coating

        NOTE

        Coating in area A2 may not be complete.

      1. Repair VRS4466, TASK 72-50-24-300-053 (REPAIR-053)

      3. Worn, measure dimension D1.

        1. Not less than 0.0945 in. (2.400 mm)

        1. Accept

        2. Less than Step and not less than 0.0846 in. (2.149 mm)

        1. Repair VRS4466, TASK 72-50-24-300-053 (REPAIR-053)

        3. Less than in Step

        1. Repair VRS4499, TASK 72-50-24-300-056 (REPAIR-056)

      4. Worn, measure dimension D2.

        NOTE

        For wear in area A5 refer to Step.

        1. Not less than 0.0984 in. (2.499 mm)

        1. Accept

        2. Less than in Step

        1. Repair VRS4466, TASK 72-50-24-300-053 (REPAIR-053)

    4. SUBTASK 72-50-24-220-003 Examine the Support Ring in Area A5 for Wear

    1. Refer to Figure.

      2. Examine the hardface coating in area A5.

        1. Damaged or missing hardface coating. Up to 29 areas of chipped/removed coating. Each individual area of chipped/removed coating not more than 0.040 sqin. (25.81 sqmm).

        1. Accept

        2. More than in Step

        1. Repair VRS4309, TASK 72-50-24-300-039 (REPAIR-039)

      3. Worn, measure dimension D2.

        NOTE

        For wear in area A1 refer to Step.

        1. Not less than 0.0984 in. (2.499 mm)

        1. Accept

        2. Less than in Step

        1. Repair VRS4309, TASK 72-50-24-300-039 (REPAIR-039)

    5. SUBTASK 72-50-24-220-004 Examine the Support Ring at Diameter D3 for Wear and Shrinkage

    1. Refer to Figure.

      2. Worn or shrunken, measure the diameter D3.

        1. Between 19.4014 and 19.4184 in. (492.796 and 493.227 mm)

        1. Accept

        2. More than in Step

        1. Reject

    6. SUBTASK 72-50-24-220-005 Examine the Spacer Keys of the Support Ring at Dimension D4 for Wear

    1. Refer to Figure.

      2. Worn, measure dimension D4.

        1. Not less than 0.3834 in. (9.738 mm)

        1. Accept

        2. Less than in Step

        1. Repair VRS4356, TASK 72-50-24-300-038 (REPAIR-038)

    7. SUBTASK 72-50-24-220-006 Examine the Support Ring at Diameter D5 for Wear

    1. Refer to Figure.

      2. Worn, measure diameter D5.

        1. Not more than 0.2776 in. (7.051 mm) in diameter.

        1. Accept

        2. More than in Step

        1. Repair VRS4356, TASK 72-50-24-300-038 (REPAIR-038)

    8. Figure: Examine the Support Ring

    Examine the Support Ring

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial changes. (EC 05VM503)