TASK 72-41-33-300-009 HPC Stage 3 Variable Stator Vane Shroud - Replace The Dowel Pins, Repair-009 (VRS6085)

DMC:V2500-A0-72-41-3313-00A-920A-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 72-41-33-300-009 HPC Stage 3 Variable Stator Vane Shroud - Replace The Dowel Pins, Repair-009 (VRS6085)

Effectivity

FIG/ITEM

PART NO.

ASSEMBLY

02-200

6A3467

A

02-200

6A7719

B

02-200

6B1156

B

Material of component

PART IDENT

MATERIAL

HP compressor stage 3 inner shroud

Aluminium alloy

Dowel pin

Nimonic 80A

General

Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service bulletin alpha variants refer to the IPC.

This repair must only be done when the instruction to do so is given in TASK 72-41-33Inspection/Check.

This Repair has been issued to replace worn/damaged dowel pins in the HP compressor stage 3 inner shroud.

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

Price and Availability

Refer to International Aero Engines

Related Repairs - None

NOTE

More equipment and materials necessary to do this repair are in the SPM TASKS given below:
SPM TASK 70-09-00-400-501
SPM TASK 70-11-26-300-503
SPM TASK 70-23-05-230-501
SPM TASK 70-38-02-300-503

NOTE

To identify consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Standard workshop equipmentLOCALStandard workshop equipment
Penetrant Crack Test EquipmentLOCALPenetrant crack test equipment
Vibrating marking pencilLOCALVibrating marking pencil

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-099 LINT-FREE CLOTHLOCALCoMat 02-099
CoMat 03-026 LIQUID NITROGENLOCALCoMat 03-026
CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)LOCALCoMat 06-063
CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)LOCALCoMat 06-064

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
PART IDENTPART NO.
Retaining ringAS20762
Retaining ringAS20763
Grooved headless pinAS20745

(dowel pin)

Locating pinLK41751

(dowel pin)

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-33-070-001 Remove the Dowel Pins, Assembly A and Assembly B

      WARNING

      BE CAREFUL WHEN YOU USE COMPRESSED AIR. PUT ON PROTECTIVE CLOTHING AND GOGGLES. MAKE SURE THAT ALL PERSONS ARE AT A SAFE DISTANCE.

    1. Refer to Figure, Figure and Figure.

      2. Remove the half shrouds from each other.

      1. Make a note of the position of the correlation marks of the matched set.

      3. Remove the worn/damaged dowel pins.

      1. Remove the pins with a drift and discard the pins.

      4. Remove sharp edges around the location holes.

      1. Use hand methods.

      5. Clean the holes.

      1. Refer to the SPM TASK 70-11-26-300-503.

        Use CoMat 02-099 LINT-FREE CLOTH and blast with clean dry compressed air.

    2. SUBTASK 72-41-33-220-124-A00 Examine the Holes, Assembly A

    1. Refer to Figure and Figure.

      2. Do a visual and dimensional inspection.

      1. Examine the holes for scores.

        Reject the part if damage is found.

        Make sure the fits and clearances for the pins are satisfactory.

        Examine the rear shroud interference fit dowel hole for wear.

        If the diameter of the hole is between 0.1963 to 0.1970 in. (4.987 to 5.005 mm), continue with the repair.

        If the diameter is more than 0.1970 in. (5.005 mm), reject the part.

        Examine the front shroud clearance fit dowel hole for wear.

        If the diameter of the hole is between 0.200 to 0.201 in. (5.07 to 5.10 mm), continue with the repair.

        If the diameter is more than 0.201 in. (5.10 mm), reject the part.

    3. SUBTASK 72-41-33-220-124-B00 Examine the Holes, Assembly B

    1. Refer to Figure and Figure.

      2. Do a visual and dimensional inspection.

      1. Examine the holes for scores.

        If damage is found, reject the part.

        Make sure the fits and clearances for the pins are satisfactory.

        Examine the rear shroud interference fit dowel hole for wear.

        If the diameter of the hole is between 0.2357 to 0.2364 in. (5.987 to 6.005 mm), continue with the repair.

        If the diameter is more than 0.2364 in. (6.005 mm), reject the part.

        Examine the front shroud clearance fit dowel hole for wear.

        If the diameter of the hole is between 0.239 to 0.240 in. (6.07 to 6.10 mm), continue with the repair.

        If the diameter is more than 0.240 in. (6.10 mm), reject the part.

    4. SUBTASK 72-41-33-230-083 Do a crack Test

      1. Do a penetrant crack test.

    5. SUBTASK 72-41-33-350-071-A00 Replace the Dowel Pins, Assembly A

      WARNING

      DO NOT GET LIQUID NITROGEN ON YOUR SKIN OR IN YOUR EYES. PUT ON PROTECTIVE CLOTHING, GLOVES, GOGGLES AND A MASK. LIQUID NITROGEN IS AN ASPHYXIATOR. USE THE LIQUID IN A WELL VENTILATED AREA. IF YOU GET THE LIQUID ON YOUR SKIN OR IN YOUR EYES, FLUSH IT AWAY WITH WATER. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.

    1. Refer to Figure and Figure.

      2. Install the retaining rings to the dowel pins.

      1. Push the retaining ring over the pin until it engages in the groove.

        NOTE

        Use retaining ring AS20762 and dowel pin LK41751.

      3. Install the dowel pins into the half shrouds.

      1. Freeze the pins with CoMat 03-026 LIQUID NITROGEN.

        Use an applicable installation tool to install the pins in position.

        Use heat-protecting gloves.

      4. Replace the half shrouds.

      1. Assemble the half shrouds together.

        Make sure the correlation marks are aligned.

    6. SUBTASK 72-41-33-350-071-B00 Replace the Dowel Pins, Assembly B

      WARNING

      DO NOT GET LIQUID NITROGEN ON YOUR SKIN OR IN YOUR EYES. PUT ON PROTECTIVE CLOTHING, GLOVES, GOGGLES AND A MASK. LIQUID NITROGEN IS AN ASPHYXIATOR. USE THE LIQUID IN A WELL VENTILATED AREA. IF YOU GET THE LIQUID ON YOUR SKIN OR IN YOUR EYES, FLUSH IT AWAY WITH WATER. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.

    1. Refer to Figure and Figure.

      2. Install the retaining rings to the dowel pins.

      1. Push the retaining ring over the pin until it engages in the groove.

        NOTE

        Use retaining ring AS20763 and dowel pin AS20745.

      3. Install the dowel pins into the half shrouds.

      1. Freeze the pins with CoMat 03-026 LIQUID NITROGEN.

        Use an applicable installation tool to install the pins in position.

        Use heat-protecting gloves.

      4. Replace the half shrouds.

      1. Assemble the half shrouds together.

        Make sure the correlation marks are aligned.

    7. SUBTASK 72-41-33-350-087 Identify the Repair

      1. Vibro-engrave VRS6085 adjacent to the part number.

      1. Refer to the SPM TASK 70-09-00-400-501, SUBTASK 70-09-00-400-001.

        Use vibro-engraving equipment.

    8. SUBTASK 72-41-33-380-061 Apply the Surface Protection

      1. Locally touch up the repaired area(s).

      1. Refer to the SPM TASK 70-38-02-300-503.

    9. Figure: Repair Details and Dimensions - Assembly A and Assembly B

    Sheet 1

    Legend
    Repair Details and Dimensions - Assembly A and Assembly B

    Sheet 1

    Close

    Figure: Repair Details and Dimensions - Assembly A

    Sheet 2

    Legend
    Repair Details and Dimensions - Assembly A

    Sheet 2

    Close

    Figure: Repair Details and Dimensions - Assembly B

    Sheet 3

    Legend
    Repair Details and Dimensions - Assembly B

    Sheet 3

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Link not Found
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Link not Found
Link not Found
Link not Found
Link not Found
Link not Found
Manufacturer Code:X222X
Supply Number:CoMat 02-099
Type:sp01
Supply Short Name:CoMat 02-099 LINT-FREE CLOTH
Supply Name:CoMat 02-099 LINT-FREE CLOTH
Specification Groups:
Doc NumberType
WHERE COMAT 02-099 IS SPECIFIED WITH NO SUFFIX, USE COMAT 02-099A OR COMAT 02-099B.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Supply Number:CoMat 03-026
Type:sp01
Supply Short Name:CoMat 03-026 LIQUID NITROGEN
Supply Name:CoMat 03-026 LIQUID NITROGEN
Specification Groups:
Doc NumberType
OMAT:220BB-N-411 T2GBC1
JCR-135BB-N-411 T2GBC1
Suppliers:
ManufacturerRemarks
LOCAL
U2046
U2096
Manufacturer Code:X222X
Supply Number:CoMat 06-063
Type:sp01
Supply Short Name:CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)
Supply Name:CoMat 06-063 FLUORESCENT PENETRANT (POST-EMULSIFIED MEDIUM SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐063 letter suffix material with other CoMat 06‐063 letter suffix materials. Where CoMat 06‐063 is specified with no suffix, use one of the CoMat 06‐063 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:X222X
Supply Number:CoMat 06-064
Type:sp01
Supply Short Name:CoMat 06-064FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Supply Name:CoMat 06-064 FLUORESCENT PENETRANT (WATER WASHABLE MEDIUM SENSITIVITY)
Specification Groups:
Doc NumberType
It is not permitted to mix the selected CoMat 06‐064 letter suffix material with other CoMat 06‐064 letter suffix materials.Where CoMat 06‐064 is specified with no suffix, use one of the CoMat 06‐064 letter suffix materials.
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:LOCAL
Tool Number:Penetrant crack test equipment
Tool Name:Penetrant Crack Test Equipment
Link not Found
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