TASK 72-50-24-300-021 LPT Inner Diffuser Duct Support Ring - Blend Repair, Repair-021 (VRS4127)

DMC:V2500-A0-72-50-2403-00A-649A-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 72-50-24-300-021 LPT Inner Diffuser Duct Support Ring - Blend Repair, Repair-021 (VRS4127)

Effectivity

FIG/ITEM PART NO.

01-170

3A0113

01-170

3A2527

Material of component

PART IDENT

SYMBOL

MATERIAL

Support Ring assembly

WL2.4650.7 or MTS 1155B/C263

General

Price and availability - none

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

NOTE

For more equipment and materials necessary to do this repair, refer to the SPM TASK 70-23-05-230-501 and SPM TASK 70-35-21-350-501.
Equivalent equipment may be used.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-24-350-056 Blend Repair the Support Ring Assembly

      NOTE

      1. Refer to the SPM TASK 70-35-21-350-501 for blending surface damage.

      2. For local blending use a length to depth ratio of 5:1 minimum, refer to Figure.

      3. Unless stated differently, there is no limit for the number of blends. If there is a number of damage marks close together, blend the whole area to the specified depth. Minimum distance between blends is 0.500 in. (12.70 mm).

      1. Blend repair in area A1.

      1. Maximum permitted depth of blend repair is 0.008 in. (0.20 mm).

      2. Blend repair in area A2.

      1. Dress to remove the raised material only.

      3. Blend repair the holes.

        and the locating keys.

      1. Dress to remove the raised material only.

    2. SUBTASK 72-50-24-230-058 Examine the Blended Areas for Cracks

      1. Do the test for cracks.

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

        Use medium sensitivity level.

        No cracks are permitted.

    3. SUBTASK 72-50-24-220-087 Do the Post Repair Inspection

      1. Examine the surface of the blended areas visually.

      1. The blended surface must be as smooth as the initial surface.

        Edges and corners are not permitted.

      2. Examine the blended areas.

        dimensionally.

      1. Measure the dimensions of the blended areas.

        Refer to Figure.

        The blend ratio must be in the limits.

    4. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE