TASK 72-45-23-300-007 HPT Stage 1 Duct Segment - Unplug The Cooling Air Holes, Repair-007 (VRS3071)

DMC:V2500-A0-72-45-2301-00A-652A-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 72-45-23-300-007 HPT Stage 1 Duct Segment - Unplug The Cooling Air Holes, Repair-007 (VRS3071)

Effectivity

FIG/ITEM

PART NO.

01-060

2A2063-01

01-060

2A3886-01

Material of component

DESCRIPTION

SYMBOL

MATERIAL

Stage 1 HPT duct segment

-

Nickel base alloy

General

Price and availability - refer to IAE

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

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Pin viseLOCALPin vise
ReamersLOCALReamers
Spring wireLOCALSpring wire
Ultrasonic cleaning equipmentLOCALUltrasonic cleaning equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 10-058 PENETRATING OIL0AM53CoMat 10-058

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-45-23-350-055 Unplug the Cooling Air Holes in the Stage 1 HPT Duct Segment

      CAUTION

      REAMERS ARE RECOMMENDED AS AN ALTERNATIVE TO SPRING WIRE OR DRILL BITS FOR THE INITIAL PROBING. WIRE CAN BREAK OFF LARGER PIECES OF UNWANTED MATERIALS AND FORCE THEM INTO THE INTERNAL CAVITY. DRILLS BREAK EASIER AND CAN GET CAUGHT IN THE HOLE.

      CAUTION

      THE HOLES ARE DIFFERENT SIZES. MAKE SURE YOU USE THE CORRECT REAMER OR SPRING WIRE SIZE FOR EACH HOLE.

    1. Refer to Figure.

      2. Clear the cooling air holes with a reamer. Use a spring wire with a pin vise if you can not reach an area with a reamer.

      1. Apply CoMat 10-058 PENETRATING OIL to the holes. Let the oil soak into unwanted material in the holes. If you use a spring wire, cut the end of the spring wire at an angle. Make sure that you use a rotary movement when you insert the reamer. Move the reamer or wire slowly into the hole. Intermittently move the reamer farther into the hole and then remove it again while you hold the duct segment, so that the holes point down to let unwanted material fall out.

      3. Use the reamer again until you get the diameters given in Figure.

      1. Complete the procedure with a spring wire.

        Reamers are tapered and will cause the holes to have a taper. If you use a wire, the taper will be kept to a minimum.

    2. SUBTASK 72-45-23-130-051 Clean the Stage 1 HPT Duct Segment

      1. Do an ultrasonic cleaning to remove unwanted material from internal areas.

      1. Refer to the SPM TASK 70-13-02-300-503. Position the duct segment at different angles to remove unwanted material from the inner areas of the duct segment.

        NOTE

        Ultrasonics will increase the temperature of the solution.

    2. Power flush the duct segment internally and externally with hot water and air dry.

    3. SUBTASK 72-45-23-220-073 Examine the Repair

      1. Visually examine the duct segment for plugged cooling air holes.

      1. If there are plugged cooling air holes, do this TASK again.

    4. SUBTASK 72-45-23-720-051 Do an Airflow Check of the Stage 1 HPT Duct Segment

    1. Refer to Figure, Figure, Figure and Figure.

      2. Do an airflow check of the cooling air holes in the duct segment.

      1. Refer to the SPM TASK 70-72-01-720-501.

    5. SUBTASK 72-45-23-350-056 Correct the Airflow of the Stage 1 HPT Duct Segment

    1. Refer to Figure, Figure, Figure and Figure.

      2. Correct the airflow by hand probing.

      1. If the airflow is not sufficient, hand probe the holes again. Increase the hole size in small increments. Hand probe only a few holes at a time so you do not cause too much airflow. Do not correct the airflow by opening one or more holes too much. The airflow measurement can be in the limits, but the part will not be correctly and evenly cooled.

      3. Correct the airflow if the airflow point is to the right side of line D.

      1. Slowly open the impingement cover plate holes for the compartment you are testing.

      4. Correct the airflow if the airflow point is above line B or line C.

      1. Slowly open the flowpath surface holes and the shiplap holes for the compartment you are testing.

    5. If the airflow point is to the left side of line A, you cannot repair the part.

      6. Correct the airflow if the airflow point is below line E.

      1. Slowly open the impingement cover plate holes for the compartment you are testing. If you open the holes and the airflow point moves to the left side of line A, you cannot repair the part.

    6. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    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
Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:X222X
Supply Number:CoMat 10-058
Type:sp01
Supply Short Name:CoMat 10-058 PENETRATING OIL
Supply Name:CoMat 10-058 PENETRATING OIL
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Tool Number:Pin vise
Tool Name:Pin vise
Manufacturer Code:LOCAL
Tool Number:Reamers
Tool Name:Reamers
Manufacturer Code:LOCAL
Tool Number:Spring wire
Tool Name:Spring wire
Manufacturer Code:LOCAL
Tool Number:Ultrasonic cleaning equipment
Tool Name:Ultrasonic cleaning equipment