TASK 72-42-33-300-018 No. 4 Bearing Front Seal Support - Blend Repair Cracks, Repair-018 (VRS3671)

DMC:V2500-A0-72-42-3301-01A-649A-C|Issue No:002.00|Issue Date:2014-11-01

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 72-42-33-300-018 No. 4 Bearing Front Seal Support - Blend Repair Cracks, Repair-018 (VRS3671)

Effectivity

FIG/ITEM

PART NO.

01-020

2A0851

01-020

2A2833

01-020

2A3537

Material of component

PART IDENT

SYMBOL

MATERIAL

No. 4 bearing seal support

assembly

-

Titanium alloy

General

Price and availability - none

The practices and processes referred to in the procedure by the TASK numbers are in the SPM.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-33-320-066 Machine the No. 4 Bearing (Front) Compartment

      1. Machine the excess metal in area shown in figure flush to the adjacent surface.

      1. Refer to Figure and Figure.

        A surface finish of 125 microinches or finer is required.

        NOTE

        Blending and/or polishing is not permitted before fluorescent penetrant inspection.

    2. SUBTASK 72-42-33-230-056 FPI the Repaired Area

      1. Do a fluorescent penetrant inspection of the No. 4 bearing (front) compartment.

      1. Refer to the SPM TASK 70-23-05-230-501.

        No cracks permitted.

    3. SUBTASK 72-42-33-320-067 Blend the Repaired Area

      1. Blend to remove any burr or sharp edge that remains after machining.

      1. Refer to the SPM TASK 70-35-17-350-501.

    4. Figure: No. 4 bearing (front) compartment crack repair

    Sheet 1

    Legend
    No. 4 bearing (front) compartment crack repair

    Sheet 1

    Close

    Figure: No. 4 bearing (front) compartment crack repair

    Sheet 2

    Legend
    No. 4 bearing (front) compartment crack repair

    Sheet 2

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Corrected the SPM reference. (EA13VC080)