TASK 72-42-33-300-019 No. 4 Bearing Front Seal Support - Blend Repair Cracks, Repair-019 (VRS3666)

DMC:V2500-A0-72-42-3301-02A-649A-C|Issue No:002.00|Issue Date:2021-02-01

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 72-42-33-300-019 No. 4 Bearing Front Seal Support - Blend Repair Cracks, Repair-019 (VRS3666)

Effectivity

FIG/ITEM

PART NO.

01-020

2A0851

01-020

2A2833

01-020

2A3537

01-020

2A3845

01-020

2A4323

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

Action/ConditionData Module/Technical Publication
Make sure that all the cleaning and inspection procedures are done before this repair.

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-33-320-068 Machine the Front Face of the No. 4 Bearing Seal Support Assembly

      1. Machine the cracks on the seal support assembly.

      2. Refer to Figure, Figure, Figure and Figure.

    1. SUBTASK 72-42-33-320-069 Blend the Repaired Area

      CAUTION

      DO NOT BLEND ON MACHINED SURFACE. MAY CAUSE SMEARING OF MATERIAL WHICH COULD AFFECT FPI RESULTS.
      1. Blend to remove sharp edges or burrs. Break all sharp edges 0.003 to 0.015 in. (0.0762 to 0.381 mm).

    1. SUBTASK 72-42-33-220-099 Examine the Repaired Area

      1. Do a fluorescent penetrant inspection of the No. 4 bearing seal assembly after crack repair.

      2. Refer to Figure, Figure, Figure, Figure and the SPM TASK 70-23-01-230-501 (Dip or Spray).

      1. No cracks.

      2. Accept.

      1. Any cracks in repaired area.

      2. Reject (condition is non-repairable).

        NOTE

        It is permitted to repeat the repair if all repair requirements can be satisfied.
  1. Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Sheet 2

    Legend
    Repair Details and Dimensions

    Sheet 2

    Close

    Figure: Repair Details and Dimensions

    Sheet 3

    Legend
    Repair Details and Dimensions

    Sheet 3

    Close

    Figure: Repair Details and Dimensions

    Sheet 4

    Legend
    Repair Details and Dimensions

    Sheet 4

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised effectivity table, procedural step, note and added prerequisites. (16VC287)