TASK 72-50-53-200-012 No. 5 Bearing Front Heat Shield - Examine, Inspection-012

DMC:V2500-A0-72-50-5304-00A-310A-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 72-50-53-200-012 No. 5 Bearing Front Heat Shield - Examine, Inspection-012

Effectivity

FIG/ITEM PART NO.

21-040

2A1354

General

This TASK gives the procedure for the inspection of the No. 5 bearing heatshield. For the other parts of the exhaust case and fittings refer to TASK 72-50-53-200-000 (INSPECTION/CHECK-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 70-20-00-200-501.

All the parts must be cleaned before any part is examined. Refer to TASK 72-50-53-100-000 (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.

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

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-53-220-164 Examine the No. 5 Bearing Compartment Heatshield (21-040) for Nicks, Dents, Scratches and Cracks

    1. Refer to: Figure

      2. Examine the heatshield for nicks, dents, scratches and cracks.

        1. Nicks and scratches.

          1. No high metal on location 1. Depth of Nicks and scratches must not be more than 0.005in. (0.127 mm)

          1. Accept

        2. Dents.

          1. Dents must have smooth bottom with maximum depth of 0.125in. (3.175 mm)

          1. Accept

        3. Cracks.

          1. NO cracks allowed

          1. Accept

        4. Other than (1), (2) or (3)

        1. Repair, VRS3325 TASK 72-50-53-300-065 (REPAIR-065)

    2. SUBTASK 72-50-53-220-165 Examine the No. 5 Bearing Compartment Heatshield (21-040) for Wear

    1. Refer to: Figure

      2. Examine the heatshield for wear.

        1. Wear.

          1. The seal surface at location 1 and the areas touched by the bolt heads at location 2 can not be worn less than 0.015 in. (0.381 mm) thick

          1. Accept

          2. Other than (1)

          1. Reject

    3. Figure: No. 5 bearing compartment heatshield inspection locations

    No. 5 bearing compartment heatshield inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE