TASK 72-45-31-200-003-B00 HPT Stage 2 Hub Heatshield - Examine, Inspection-003

DMC:V2500-A0-72-45-3102-00B-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 72-45-31-200-003-B00 HPT Stage 2 Hub Heatshield - Examine, Inspection-003

Effectivity

FIG/ITEM

PART NO.

01-020

2A2406

General

This TASK gives the procedure for the inspection of the stage 2 HPT heat shield.

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 70-20-00-200-501.

All the parts must be cleaned before any part is examined. Refer to the SPM TASK 70-10-00-100-501.

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 72-45-31-230-058. Do the 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.

Definition of Damages, TASK 70-02-02-350-501

Inspection of Parts, 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 72-45-31-230-058-001 Examine the Stage 2 HPT Heat Shield (01-020) for Cracks

    1. Clean the part. Refer to TASK 72-45-31-100-000 (CLEANING-000).

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

        PART IDENT

        TASK/SUBTASK

        Stage 2 HPT heat shield

        (Dip or Spray)

        1. Cracked

        1. Reject

    2. SUBTASK 72-45-31-230-058-002 Examine the Stage 2 HPT Heat Shield (01-020) for Cracks

    1. Clean the part. Refer to TASK 72-45-31-100-000 (CLEANING-000).

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

        PART IDENT

        TASK/SUBTASK

        Stage 2 HPT heat shield

        (Dip or Spray)

        1. Cracked

        1. Reject

    3. SUBTASK 72-45-31-220-105 Examine the Stage 2 HPT Heat Shield (01-020) for Corrosion, Dents and Nicks

    1. Refer to: Figure

      2. Examine the heat shield at location 1 for corrosion, dents and nicks.

        1. Corrosion, dents and nicks

        1. Reject

    4. SUBTASK 72-45-31-220-106 Examine the Stage 2 HPT Heat Shield (01-020) for the Diameter

    1. Refer to: Figure

      2. Examine the heat shield at location 2 for the diameter.

        1. Diameter.

          1. If the dimension is between 5.526 and 5.532 in. (140.360 and 140.513 mm)

          1. Accept

          2. Other than (a)

          1. Reject

    5. SUBTASK 72-45-31-220-137 Examine the Stage 2 HPT Heat Shield (01-020) for Overtemperature, if Engine Experienced a Possible Oil Ignition ( TASK 72-45-00-200-801) or Titanium Fire ( TASK 72-45-00-200-005)

      1. Examine the Stage 2 HPT heat shield for overtemperature by doing a hardness check.

        PART IDENT

        TASK/SUBTASK

        Do a hardness check on heat shield

        Refer to TASK 72-45-31-200-006 (INSPECTION-006)

        1. If hardness is more than HV 344 (36RC)

        1. No action necessary and continue the inspection

        2. If hardness is equal to or less than HV 344 (36RC)

        1. Heat shield was exposed to overtemperature, therefore reject the Stage 1 HPT inner air seal HPT Stage 1 Rotating Inner Air Seal And Damper (72-45-13,01-020), Stage 1 HPT outer air seal ENGINE-STAGE 1 HPT AIR SEAL (OUTER) (72-45-12,01-040), Stage 2 HPT air seal HP Turbine (HPT) Rotor And Stator Assembly (72-45-00,01-080), Stage 1 HPT hub HPT Stage 1 Hub (72-45-11,01-010) or HPT Stage 1 Hub (72-45-11,01-011), Stage 2 HPT hub ENGINE-STAGE 2 TURBINE HUB (72-45-31,01-011) and the Stage 2 blade remaining plate HPT Stage 2 Blade Retaining Plate And Related Parts (72-45-33,01-020)

    6. Figure: Stage 2 HPT Heat Shield Inspection Locations

    Stage 2 HPT Heat Shield Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE