TASK 72-32-81-300-006 LPC Stage 1.5 - 2.5 Drum Disk - Blend Repair The Knife Edges, Repair-006 (VRS1862)

DMC:V2500-A0-72-32-8100-03A-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 72-32-81-300-006 LPC Stage 1.5 - 2.5 Drum Disk - Blend Repair The Knife Edges, Repair-006 (VRS1862)

Effectivity

FIG/ITEM

PART NO.

02-200

5R0159

Material of component

RR

DESCRIPTION

SYMBOL

MATERIAL

Disc

Titanium alloy

General

Price and availability

Refer to IAE for any of the following:

Tools

Engine parts

Repair of spares

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Portablegrinding equipmentLOCALPortable grinding equipment

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-81-350-058 Dress to Remove Damage

    1. Refer to Figure.

      2. CAUTION

        TITANIUM COMPOMENTS.
        SILICON CARBIDE TYPE WHEELS, STONES AND ABRASIVE PAPERS ARE TO BE USED FOR THIS REPAIR.
        ALUMINUM OXIDE TYPES MUST NOT BE USED.
        THE MATERIAL WILL OXIDIZE AND CRACK IF MECHANICAL CUTTERS ARE USED HEAVILY. THIS HAS OCCURRED IF THE COMPONENT SHOWS DARK STRAW TO BLUE DISCOLORATION.
        IF AT ANY TIME THIS COLORATION OCCURS THE COMPONENT MUST BE REJECTED.

        Dress to remove damage.

        1. Use portable grinding equipment.

        1. Dress until all damage is removed.

      3. Blend the dressed area and polish out scores.

        1. Dressing limits: Figure.

        1. The disc has four knife edge seals, and each seal has two fins.

        2. One fin can be dressed for each seal.

        3. Dressed area for one fin must be less than 0.055 sqin. (0.35 sqcm).

    2. SUBTASK 72-32-81-230-057 Examine the Disc for Cracks

      1. Penetrant crack test the dressed area.

        1. Refer to the SPM TASK 70-23-04-230-501.

        1. Make sure there are no cracks in the repaired area.

    3. SUBTASK 72-32-81-220-069 Examine the Disc

      1. Do a visual inspection.

    4. SUBTASK 72-32-81-350-059 Mark Repair Number

    1. Refer to Figure.

      2. Vibro-engrave VRS1862 on the top surface of the dovetail.

      1. Refer to Figure.

    5. Figure: Dressing Limits

    Dressing Limits

    Figure: Repair Marking

    Repair Marking

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Portable grinding equipment
Tool Name:Portablegrinding equipment