TASK 72-50-10-030-009-A00 LPT Case And Rotor Assembly - Disassemble The LPT Stage 4 Stator Vanes From The LPT, Disassembly-009

DMC:V2500-A0-72-50-1000-09B-530A-B|Issue No:002.00|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 72-50-10-030-009-A00 LPT Case And Rotor Assembly - Disassemble The LPT Stage 4 Stator Vanes From The LPT, Disassembly-009

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.

Apply the approved penetrating oil before the removal of threaded parts. Let the parts soak before removal. For the approved oils and procedures, refer to the SPM TASK 70-64-00-640-501.

Refer to TASK 72-50-00-990-501 (DESCRIPTION AND OPERATION-001) for a sectional view of the LP turbine module.

NOTE

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

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Electronic balance craneLOCALElectronic balance crane
BasketLOCALBasket

For blades and vanes

Lifting slingLOCALLifting sling
Rack palletLOCALRack pallet
IAE 1M14041 Tilting plate0AM53IAE 1M140411
IAE 1M14056 Lifting shaft0AM53IAE 1M140561
IAE 1M14063 Guide fixture0AM53IAE 1M140631
IAE 1M14010 Assembly/Disassembly fixture0AM53IAE 1M140101
IAE 1M14070 Mounting plate0AM53IAE 1M140701
IAE 1M14071 Lifting fixture0AM53IAE 1M140711
IAE 1M14119 Protector ring segment0AM53IAE 1M141193
IAE 1M14130 Removal puller0AM53IAE 1M141301

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-10-030-150 Install the Protector Ring Segments

    1. Refer to: Figure

    2. Install the IAE 1M14119 Protector ring segment 3 off between the stage 4 vanes inner platforms and the stage 3 blades roots.

    2. SUBTASK 72-50-10-030-158 Install the Lifting Shaft in to the Guide Fixture

    1. Refer to: Figure

    2. Install the IAE 1M14056 Lifting shaft 1 off in to the IAE 1M14063 Guide fixture 1 off.

    3. Attach the bushing, part of the lifting shaft, with three head cap screws on to the guide fixture. Tighten the bolts.

    3. SUBTASK 72-50-10-030-159 Install the Tilting Plate on to the Lifting Shaft

    1. Refer to: Figure

    2. Install the IAE 1M14041 Tilting plate 1 off on to the lifting shaft.

    3. Turn the lifting shaft. Lift the tilting plate until the protective rubber, part of the tilting plate, is on the same level as the stage 4 vane honeycombs. Use an applicable wrench.

    4. Carefully fill the bicycle tube, part of the tilting plate, with pressured air.

    4. SUBTASK 72-50-10-030-107 Remove the Shroud Seal Segments of the Stage 4

    1. Refer to: Figure

    2. Loosen the shroud seal segments with the IAE 1M14130 Removal puller 1 off.

    3. Remove all the 31 shroud seal segments from the LP turbine case.

    4. Put the shroud seal segments in to a basket.

    5. SUBTASK 72-50-10-030-108 Remove the Stage 4 Rear Heatshield

    1. Refer to: Figure

    2. Remove the stage 4 rear heatshield from the LP turbine case.

    3. Put the rear heatshield in a rack pallet.

    6. SUBTASK 72-50-10-030-109 Prepare the Stage 4 Vane Assembly for Removal

    1. Refer to: Figure

      NOTE

      Make sure that the rear hub hooks from all vanes become free from the groove in the turbine case.

    2. Carefully lower the inner ends of the 30 vane segments. Turn the lifting shaft stepwise down. Use an applicable wrench. Push all 30 vane segments at the inner end down by hand if necessary.

    7. SUBTASK 72-50-10-030-160 Remove the Tilting Plate and the Lifting Shaft

    1. Refer to: Figure

    2. Release the pressure of the bicycle tube on the tilting plate.

    3. Remove the tilting plate.

    4. Loosen and remove the three head cap screws which attach the bushing to the guide fixture.

    5. Install the three head cap screws in to the threaded holes of the bushing.

    6. Remove the lifting shaft from the guide fixture.

    8. SUBTASK 72-50-10-030-110 Install the Lifting Fixture

    1. Refer to Figure and Figure.

    2. Use hoist equipment. Lift the IAE 1M14071 Lifting fixture 1 off above the LP turbine case and rotor.

    3. Carefully lower the lifting fixture on to the stage 4 vane assembly. Turn the lifting fixture to engage the hooks through the vane segments. Each hook must engage through the second and third vane of the vane cluster.

    4. Remove hoist equipment.

    5. CAUTION

      MAKE SURE THAT EACH TAIL OF THE HOOKS IS ATTACHED CORRECTLY TO THE STAGE 4 VANES. IF NOT THE PARTS CAN BE DAMAGED. THE HOOKS CAN BE SEEN THROUGH THE APERTURE OF THE LIFTING FIXTURE.

      Attach the hooks to the second vane airfoil leading edges. Tighten the knurled knobs.

    9. SUBTASK 72-50-10-030-111 Remove the Stage 4 Vane Assembly

    1. Refer to: Figure

    2. Attach hoist equipment on to the electronic balance crane. Lift the electronic balance crane above the LP turbine case and rotor. Attach the IAE 1M14071 Lifting fixture 1 off to the electronic balance crane. Use lifting sling.

    3. Hoist the electronic balance crane until the balance scale shows the value of approximately 71.0 lb (32.0 kg) plus the weight of the lifting sling.

    4. CAUTION

      WHILE REMOVAL OF THE STAGE 4 VANE ASSEMBLY MAKE SURE THAT THE BALANCE SCALE KEEPS APPROXIMATELY AT THE SAME POSITION TO PREVENT DAMAGE.

      Compress the ropes of the lifting sling while you disengage the vane assembly from the LP tubine case grooves.

    5. Remove the stage 4 vane assembly carefully with hoist equipment, the electronic balance crane and the installed lifting fixture out of the LP turbine case.

    6. Put the stage 4 vane assembly on to the IAE 1M14070 Mounting plate 1 off. Remove the electronic balance crane from hoist equipment.

    7. Release the holders of the lifting fixture with the hand knobs. Remove the lifting fixture from the stage 4 vane assembly.

    8. Disassemble the stage 4 vane assembly. Put the stage 4 vane segments and the sealing strips in baskets.

    10. SUBTASK 72-50-10-030-112 Remove the Stage 4 Front Heatshield

    1. Refer to: Figure

    2. Remove the stage 4 front heatshield from the LP turbine case.

    3. Put the front heatshield on rack pallet.

    11. SUBTASK 72-50-10-030-154 Remove the Protector Ring Segments

    1. Refer to: Figure

    2. Remove the three protector ring segments.

    12. SUBTASK 72-50-10-030-152 Move the Lifting Ring to the Zero Position

    1. Move the lifting ring of the IAE 1M14010 Assembly/Disassembly fixture 1 off in the zero position.

    13. Figure: Remove the Stage 4 Vanes Assembly

    Remove the Stage 4 Vanes Assembly

    Figure: Install the Lifting Shaft and the Tilting Plate

    Install the Lifting Shaft and the Tilting Plate

    Figure: Correct Installation of the Hooks of the Lifting Fixture

    Correct Installation of the Hooks of the Lifting Fixture

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial correction due to conversion

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:LOCAL
Tool Number:Basket
Tool Name:Basket
Manufacturer Code:LOCAL
Tool Number:Electronic balance crane
Tool Name:Electronic balance crane
Manufacturer Code:0AM53
Tool Number:IAE 1M14010
Tool Name:IAE 1M14010 Assembly/Disassembly fixture
Manufacturer Code:0AM53
Tool Number:IAE 1M14041
Tool Name:IAE 1M14041 Tilting plate
Manufacturer Code:0AM53
Tool Number:IAE 1M14056
Tool Name:IAE 1M14056 Lifting shaft
Manufacturer Code:0AM53
Tool Number:IAE 1M14063
Tool Name:IAE 1M14063 Guide fixture
Manufacturer Code:0AM53
Tool Number:IAE 1M14070
Tool Name:IAE 1M14070 Mounting plate
Manufacturer Code:0AM53
Tool Number:IAE 1M14071
Tool Name:IAE 1M14071 Lifting fixture
Manufacturer Code:0AM53
Tool Number:IAE 1M14119
Tool Name:IAE 1M14119 Protector ring segment
Manufacturer Code:0AM53
Tool Number:IAE 1M14130
Tool Name:IAE 1M14130 Removal puller
Manufacturer Code:LOCAL
Tool Number:Lifting sling
Tool Name:Lifting sling
Manufacturer Code:LOCAL
Tool Number:Rack pallet
Tool Name:Rack pallet