TASK 72-50-24-300-028 LPT Stage 3 Inner Air Seal Ring - Replace The Honeycomb Seal Segments, Repair-028 (VRS4134)

DMC:V2500-A0-72-50-2404-00A-920A-C|Issue No:004.00|Issue Date:2019-11-01

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 72-50-24-300-028 LPT Stage 3 Inner Air Seal Ring - Replace The Honeycomb Seal Segments, Repair-028 (VRS4134)

Effectivity

FIG/ITEM

PART NO.

01-250

3A0961

01-250

3A1566

Material of Component

PART IDENT

SYMBOL

MATERIAL

Stage 3 air seal ring

-

C263

Honeycomb seal segment

-

Hastelloy X

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 70-11-01-300-503, SPM TASK 70-12-08-300-503, SPM TASK 70-09-00-400-501, SPM TASK 70-23-03-230-501, SPM TASK 70-23-08-230-501 and SPM TASK 70-31-07-310-501.
Equivalent equipment may be used.

NOTE

To identify the consumable materials refer to the PCI.

NOTE

Special tools are identified in the procedure by the tool primary number.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Belt grinderLOCALBelt grinder
Fluid tankLOCALFluid tank
FurnaceLOCALFurnace

2400 deg F (1315 deg C)

Grinding machineLOCALGrinding machine
IAE 3M14208 Grinding/turning fixture0AM53IAE 3M142081
IAE 3M14209 Spot welding fixture0AM53IAE 3M142091
IAE 3M14220 Cross slide table0AM53IAE 3M142201
IAE 3M14221 Electrode guide0AM53IAE 3M142211
IAE 3M14222 Electrode holder0AM53IAE 3M142221
IAE 3M14223 Universal joint electrode0AM53IAE 3M142231
IAE 3M14363 Spot welding fixture (rear)0AM53IAE 3M143631
Illuminated comparator magnifierLOCALIlluminated comparator magnifier
Vertical turning latheLOCALVertical turning lathe
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 01-001 SOLVENT, DELETED0AM53CoMat 01-001
CoMat 01-183 WETTING AGENT FOR ACIDCLEANER1XY28CoMat 01-183
CoMat 02-142 WETTING AGENT08340CoMat 02-142
CoMat 02-143 DELETED0AM53CoMat 02-143
CoMat 02-144 BONDING AGENTC7208CoMat 02-144
CoMat 03-151 HIGH TEMP. BRAZING FILLERPOWDERLOCALCoMat 03-151
CoMat 03-227 WHITE STOP OFFD3309CoMat 03-227
CoMat 03-234 BRAZING FILLER TAPELOCALCoMat 03-234
CoMat 10-061 STODDARD SOLVENTLOCALCoMat 10-061

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
3A1586 HONEYCOMB SEAL SEGMENT3A15861

FIG/ITEM - 01-296

3A1587 HONEYCOMB SEAL SEGMENT3A15871

FIG/ITEM - 01-306

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-24-325-053 Remove the Damaged Honeycomb Seal Segment

      1. Machine off the worn honeycomb seal segments.

      1. Remove the damaged honeycomb seal segments fully.

        Keep material removal to the minimum to allow subsequent repairs.

        To get this dimension it is permitted to let stay a braze thickness of 0.005 in. (0.13 mm).

        Refer to Figure.

    2. SUBTASK 72-50-24-110-072 Clean the Air Seal Ring

      1. Vapor degrease

      1. Refer to the SPM TASK 70-11-01-300-503.

    3. SUBTASK 72-50-24-230-060-001 Examine the Air Seal Ring for Cracks

      1. Do the test for cracks.

      1. Refer to the SPM TASK 70-23-08-230-501.

        No cracks are permitted.

    4. SUBTASK 72-50-24-230-060-002 Examine the Air Seal Ring for Cracks

      1. Do the test for cracks.

      1. Refer to the SPM TASK 70-23-03-230-501. No cracks are permitted.

    5. SUBTASK 72-50-24-310-055 Prepare the Honeycomb Seal Segments for Brazing

      1. Cut the new honeycomb seal segments to length.

      1. New honeycomb seal segments are supplied longer than necessary.

    6. SUBTASK 72-50-24-110-073 Clean the Air Seal Ring and the New Honeycomb Seal Segment

      1. Vapor degrease

      1. Refer to the SPM TASK 70-11-01-300-503.

        Use clean gloves when you touch the clean parts.

    7. SUBTASK 72-50-24-310-052 Braze in the New Honeycomb Seals

      NOTE

      If CoMat 03-234 BRAZING FILLER TAPE is used perform Step to Step, if CoMat 03-151 HIGH TEMP. BRAZING FILLERPOWDER is used perform Step to Step.
      If you replace the rear honeycomb segment do not perform Step.
      If you replace the front honeycomb segment do not perform Step.

      1. Install the IAE 3M14220 Cross slide table on to the spot welding machine.

      1. Use IAE 3M14220 Cross slide table 1 off and spot welding machine.

      2. Install the IAE 3M14222 Electrode holder on to the spot welding machine.

      1. Make sure that the electrode insert with the mark "INNER" and "OUTER" (parts of the IAE 3M14223 Universal joint electrode) are installed.

      7. Attach the air seal ring on to the spot welding fixture.

      1. Make sure that the air seal ring is installed correctly against the spacer gages (parts of the spot welding fixture).

      8. Prepare the new honeycomb seal segments.

      1. Apply CoMat 03-234 BRAZING FILLER TAPE to the air seal ring mating side of the honeycomb seal segment.

        Use a roller or equivalent, roll tape in to honeycomb cells and remove backing.

      9. Position the honeycomb seal segments on to the air seal ring.

      1. Align the honeycomb seal segments, refer to Figure.

      10. Resistance weld the honeycomb seal segments.

      1. Use a short time and low weld amperage to safety the honeycomb seal segments without damage.

        Start welding in the middle and continue to the outer sides.

      11. Position the honeycomb seal segments on to the air seal ring.

      1. Align the honeycomb seal segments, refer to Figure.

      12. Resistance weld the honeycomb seal segments.

      1. Use short time and low weld amperage to safety the honeycomb seal segments without damage.

        Start welding in the middle and continue to the outer sides.

      13. Apply CoMat 03-151 HIGH TEMP. BRAZING FILLERPOWDER to the honeycomb seal segments.

      1. Make sure that the CoMat 03-151 HIGH TEMP. BRAZING FILLERPOWDER is applied equally around the honeycomb seal segments.

      15. Apply the CoMat 03-227 WHITE STOP OFF around the edges of the air seal ring.

      16. Braze

      1. Refer to the SPM TASK 70-31-07-310-501 and the special procedures for brazing.

        Refer to Figure.

    8. SUBTASK 72-50-24-110-074 Clean the Air Seal Ring

      1. Vapor degrease

      1. Refer to the SPM TASK 70-11-01-300-503.

    9. SUBTASK 72-50-24-210-052 Examine the Brazed Honeycomb Seal

      2. Fill the cells with the fluid.

      1. Put the duct assembly for 30 seconds in to the fluid.

        Hit the assembly lightly while it is in the fluid to remove caught air bubbles from the honeycomb cells.

      3. Remove the assembly from the Fluid tank.

      1. Turn the part and wait 3 to 5 minutes for the fluid to drain.

      4. Examine the honeycomb cells for lack of the fluid.

      1. Empty honeycomb cells show not completed braze bond.

      5. Acceptance limits

      1. Refer to TASK 70-31-07-310-501 except for the following:

        No unbrazed honeycomb cells around the edges of the honeycomb segment are permitted.

        Minimum space between unbonded areas exceeding 0.063 sqin (40.65 sqmm) should be 1.00 in. (25.4 mm).

        No braze filled honeycomb cells are permitted.

        Honeycomb wall thickness must not be increased by more than 0.001 in. (0.03 mm) in area above braze fillet.

    10. SUBTASK 72-50-24-370-052 Heat-treat the Air Seal Ring

      1. Precipitation heat-treat the air seal ring.

      1. Put air seal ring in to an Furnace at 1450 to 1500 deg F (788 to 816 deg C) for eight hours.

        Heating rate is not important.

        Cool in atmosphere.

    11. SUBTASK 72-50-24-325-054 Do the Post Repair

      1. Finish machine the honeycomb seal segments.

      1. Grind to the dimensions.

        Refer to Figure.

      2. Deburr the honeycomb seal segments.

      1. Refer to the SPM TASK 70-12-08-300-503 or use wire brush.

    12. SUBTASK 72-50-24-110-075 Clean the Air Seal Ring

      1. Vapor degrease

      1. Refer to the SPM TASK 70-11-01-300-503.

    13. SUBTASK 72-50-24-220-101 Do the Post Repair Inspection

      1. Dimensionally examine the air seal ring.

      2. Visually examine for damage.

      3. Electrolytically etch or vibro-peen VRS4134 adjacent to the part number.

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

      4. Examine the air seal ring for hardness.

      1. Hardness to be 22 HRC minimum or equivalent.

        If hardness is less than minimum specified, do a supplement heat-treat refer to Step.

      5. Heat-treat the air seal ring.

      1. For heat-treat cycles refer to Figure.

        Air is an acceptable atmosphere.

        After heat-treatment repeat hardness check, refer to Step.

    14. Figure: Replace the honeycomb seals of the air seal ring

    Replace the honeycomb seals of the air seal ring

    Replace the honeycomb seals of the air seal ring

    Replace the honeycomb seals of the air seal ring

    Figure: Special procedures for brazing the honeycomb seal segments of the air seal ring

    Special procedures for brazing the honeycomb seal segments of the air seal ring

    Figure: Heat-treatment cycles of the seal segments of the stage 3 air seal ring

    Heat-treatment cycles of the seal segments of the stage 3 air seal ring

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised tool nomenclature. Revised consumable nomenclature. Revised spare nomenclature. Revised Note. Revised procedural step. Revised figure. (Editorial)

Link not Found
Manufacturer Code:08340
Enterprise Name:MONSANTO CANADA LTD
BU Name:MONSANTO CANADA LTD
Street:425 ST PATRICK ST
P.O. Box:208
City:LASALLE QUE CAN
State:CANADA
Zip Code:H8N 2H3
Country:USA
Phone Number:1-314-694-1000
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:1XY28
Enterprise Name:THE PROCTER AND GAMBLE CO.
BU Name:THE PROCTER AND GAMBLE CO.
Street:2 PROCTOR AND GAMBLE PLAZA
City:CINCINNATI
State:OH
Zip Code:45202
Country:USA
Phone Number:1-513-983-2757
Fax Number:1-513-983-9458
Internet:www.pg.com
Manufacturer Code:C7208
Enterprise Name:FONTARGEN GMBH
BU Name:FONTARGEN GMBH
Street:SIEMENSSTR. 4
City:67304 EISENBERG
Country:GERMANY
Phone Number:49-6351-4010
Fax Number:49-6451-40149
Manufacturer Code:D3309
Enterprise Name:MTU MOTOREN-UND-TURBINE UNION MUNCHEN GMBH
BU Name:MTU MOTOREN-UND-TURBINE UNION MUNCHEN GMBH
Street:DACHAUERSTRASSE 665
P.O. Box:80995
City:MUNCHEN 50
Country:GERMANY
Phone Number:49-89-14890
Fax Number:49-89-1502621
Internet:www.mtu.de
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Link not Found
Link not Found
Manufacturer Code:X111X
Supply Number:CoMat 01-001
Type:sp01
Supply Short Name:CoMat 01-001 SOLVENT, DELETED
Supply Name:CoMat 01-001 SOLVENT, DELETED
Specification Groups:
Doc NumberType
wiring harnesses. Where CoMat 01‐001 is specified to clean mechanical components, use one or more of the solvents that SPM TASK 70‐11‐26‐300‐503 specifies as applicable.DELETED. Where CoMat 01‐001 is specified to clean electrical contacts or wiring harnesses, use one or more of the solvents that SPM TASK 70‐11‐57‐110‐501 specifies to clean electrical contacts or
Suppliers:
ManufacturerRemarks
X111X
Manufacturer Code:1XY28
Supply Number:CoMat 01-183
Type:sp01
Supply Short Name:CoMat 01-183 WETTING AGENT FOR ACID CLEANER
Supply Name:CoMat 01-183 WETTING AGENT FOR ACIDCLEANER
Specification Groups:
Doc NumberType
OMAT:1/272ORVUS WA PASTE
PMC 1622ORVUS WA PASTE
Suppliers:
ManufacturerRemarks
1XY28
Manufacturer Code:08340
Supply Number:CoMat 02-142
Type:sp01
Supply Short Name:CoMat 02-142 WETTING AGENT
Supply Name:CoMat 02-142 WETTING AGENT
Specification Groups:
Doc NumberType
PMC 1629PHOTO FLO 200
Suppliers:
ManufacturerRemarks
08340
Manufacturer Code:0AM53
Supply Number:CoMat 02-143
Type:sp01
Supply Short Name:CoMat 02-143 DELETED
Supply Name:CoMat 02-143 DELETED
Specification Groups:
Doc NumberType
DELETED
Suppliers:
ManufacturerRemarks
0AM53
Manufacturer Code:LOCAL
Supply Number:CoMat 02-144
Type:sp01
Supply Short Name:CoMat 02-144 BONDING AGENT
Supply Name:CoMat 02-144 BONDING AGENT
Specification Groups:
Doc NumberType
DELETED. USE COMAT 03-290.
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:LOCAL
Supply Number:CoMat 03-151
Type:sp01
Supply Short Name:CoMat 03-151 HIGH TEMP. BRAZING FILLER POWDER
Supply Name:CoMat 03-151 HIGH TEMP. BRAZING FILLERPOWDER
Specification Groups:
Doc NumberType
OMAT: 3/118NICROBRAZ 130 MSRR9500/114
Suppliers:
ManufacturerRemarks
LOCAL
K6835
63585
IE441
U0163
Manufacturer Code:D3309
Supply Number:CoMat 03-227
Type:sp01
Supply Short Name:CoMat 03-227 WHITE STOP OFF
Supply Name:CoMat 03-227 WHITE STOP OFF
Specification Groups:
Doc NumberType
MTH 316NICROBRAZE WHITE STOP OFF
Suppliers:
ManufacturerRemarks
D3309
Manufacturer Code:LOCAL
Supply Number:CoMat 03-234
Type:sp01
Supply Short Name:CoMat 03-234 BRAZING FILLER TAPE
Supply Name:CoMat 03-234 BRAZING FILLER TAPE
Specification Groups:
Doc NumberType
NICROBRAZ 130 BRAZING SHEET AMS 4778
Suppliers:
ManufacturerRemarks
LOCAL
K5086
K6835
U0163
Manufacturer Code:LOCAL
Supply Number:CoMat 10-061
Type:sp01
Supply Short Name:CoMat 10-061 STODDARD SOLVENT
Supply Name:CoMat 10-061 STODDARD SOLVENT
Specification Groups:
Doc NumberType
PMC 9001MIL-PRF-680, TYPE II
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:LOCAL
Tool Number:Belt grinder
Tool Name:Belt grinder
Manufacturer Code:LOCAL
Tool Number:Fluid tank
Tool Name:Fluid tank
Manufacturer Code:LOCAL
Tool Number:Furnace
Tool Name:Furnace
Link not Found
Manufacturer Code:0AM53
Tool Number:IAE 3M14208
Tool Name:IAE 3M14208 Grinding/turning fixture
Manufacturer Code:0AM53
Tool Number:IAE 3M14209
Tool Name:IAE 3M14209 Spot welding fixture
Manufacturer Code:0AM53
Tool Number:IAE 3M14220
Tool Name:IAE 3M14220 Cross slide table
Manufacturer Code:0AM53
Tool Number:IAE 3M14221
Tool Name:IAE 3M14221 Electrode guide
Manufacturer Code:0AM53
Tool Number:IAE 3M14222
Tool Name:IAE 3M14222 Electrode holder
Manufacturer Code:0AM53
Tool Number:IAE 3M14223
Tool Name:IAE 3M14223 Universal joint electrode
Manufacturer Code:0AM53
Tool Number:IAE 3M14363
Tool Name:IAE 3M14363 Spot welding fixture (rear)
Manufacturer Code:LOCAL
Tool Number:Illuminated comparator magnifier
Tool Name:Illuminated comparator magnifier
Manufacturer Code:LOCAL
Tool Number:Vertical turning lathe
Tool Name:Vertical turning lathe
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment