TASK 72-50-24-200-003-B00 LPT Inner Diffuser Duct Support Ring - Examine, Inspection-003

DMC:V2500-A0-72-50-2403-00B-300A-C|Issue No:002.00|Issue Date:2015-08-01

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-B00 LPT Inner Diffuser Duct Support Ring - Examine, Inspection-003

Effectivity

FIG/ITEM

PART NO.

01-170

3A1560

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 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 70-20-00-220-501.

All parts must be cleaned before any part is examined. Refer to the 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.

Reference

Refer to 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.

Methods of Testing for Crack Indications

Chemical Processes

Surface Protection

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Dial gageLOCALDial gage
Dial indicatorLOCALDial indicator
Bore gageLOCALBore gage
Dial caliperLOCALDial caliper

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-24-230-067 Do a Crack Test on the Support Ring (Fluorescent Penetrant)

    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 areas A3 and A5 upto 0.800 in. (20.32 mm) total length

        1. Repair, VRS4451 TASK 72-50-24-300-048 (REPAIR-048)

        3. Other than in (1) and (2)

        1. Reject

          NOTE

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

    2. SUBTASK 72-50-24-220-111 Examine the Spacer Keys of the Support Ring at Dimension D3 for Wear

    1. Refer to: Figure

      2. Worn, measure dimension D3, use dial caliper.

        1. Up to 0.3834 in. (9.74 mm) minimum

        1. Accept

        2. Less than in (1)

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

    3. SUBTASK 72-50-24-220-112 Examine the Support Ring for Surface Damage

      1. Nicks and dents, use dial gage and dial indicator with needle insert.

        1. Any number, no raised material 0.004 in. (0.1 mm) maximum depth

        1. Accept

        2. More than in (1)

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

    4. SUBTASK 72-50-24-220-113 Examine the Support Ring in Area A2

    1. Refer to: Figure

      2. Examine the hardface coating in area A2.

        1. Damaged or missing hardface coating. Up to 24 areas of chipped/removed coating. Each individual areas of chipped/removed coating up to 0.040 sqin. (25.8 sqmm) maximum size

        1. Accept

        2. More than in (1)

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

      3. Worn, measure dimension D1 use dial caliper.

        1. Up to 0.0984 in. (2.50 mm) minimum

        1. Accept

        2. Less than in (1)

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

    5. SUBTASK 72-50-24-220-114 Examine the Support Ring in Area A1 for Wear

    1. Refer to: Figure

      2. Fretted, use dial gage and dial indicator with needle insert.

        1. 0.002 in. (0.05 mm) maximum depth

        1. Accept

        2. More than in (1)

    6. SUBTASK 72-50-24-220-115 Examine the Support Ring at Diameter D2 for Wear

    1. Refer to: Figure

      2. Worn or shrunken, measure diameter D2, use bore gage.

        1. Between 19.4184 in. and 19.4014 in. (493.23 and 492.80 mm) maximum

        1. Accept

        2. More than in (1)

        1. Reject

    7. SUBTASK 72-50-24-220-116 Examine the Support Ring at Diameter D4 for Wear

    1. Refer to: Figure

      2. Worn, measure diameter D4, use bore gage.

        1. Up to 0.2776 in. (7.05 mm) maximum

        1. Accept

        2. More than in (1)

        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:

Corrected of a limit and of a link.

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Link not Found
Manufacturer Code:LOCAL
Tool Number:Dial caliper
Tool Name:Dial caliper
Link not Found
Manufacturer Code:LOCAL
Tool Number:Dial indicator
Tool Name:Dial indicator