Preliminary Requirements

Procedure

1. SUBTASK 72-45-00-030-051-A00 Install the Tooling to Position the HP Turbine Rotor and Stator Assembly (Pre SBE 72-0075)

   1. Refer to Figure.

   2. Remove the cover from the rear of the HP turbine rotor and stator assembly.

   3. Install the IAE 1P16046 Removal/Installation fixture or IAE 1P16543 Removal/Installation fixture 1 off.

      1. Attach a standard two-cable sling to the two hoist rings on the fixture and attach the sling to a hoist.

      2. Release the hand knobs and move the center ring of the fixture to the rear until the flanged end is in line with the front surface of the hub of the fixture. Tighten two of the hand knobs (one in each row) to hold the center ring in this position.

      3. Lift the fixture and install on to the HP turbine assembly with the offset hole in fixture over the dowel pin in the HP turbine case flange. Remove the sling and hoist.

      4. Secure the fixture with the two-piece ring against the HP turbine rear flange front face and the large offset hole over the flare of the dowel pin. Hold in position with the 25 bolts and nuts.

      5. Hold the center ring of the fixture and release the hand knobs. Move the center ring of the fixture down until it touches the rear face of the second stage turbine hub.

      6. Remove the sling and the hoist.

   4. Install the IAE 1P16058 Removal/installation jaws assembly 1 off.

      1. Install the four jaws in to the second stage turbine bore.

      2. Move the jaws radially out so the lip on the jaws engage the groove on the hub and the socket head capscrews engage the flange of the fixture center ring.

      3. Install the jaw assembly sleeve in to the jaws to move the jaws out. Align the slots in the sleeve with the large socket head capscrews. Install the sleeve until the flange contacts the jaws.

      4. Secure the jaws to the sleeve with the eight capscrews. Tighten the capscrews.

      5. Check to see if HPT is in the proper running position.

         1. NOTE

            This dimension should be an average of the two dimensions taken. Readings must be taken on unbroken part of surface on the hub flange.

            Use a parallel bar and a depth vernier to measure the distance from the machined areas on the fixture to the flange on the HP turbine rear hub (dimension D), Figure.

         2. Subtract this dimension D from the dimension marked on the machined surface of the fixture. The result will be the HP turbine assembly running distance. This dimension must be 1.251 in. to 1.271 in. (31.78 mm to 32.28 mm).

         3. You can get this dimension by right or left turns on the center pedestal of the build stand.

         4. With the HP turbine assembly in the correct running position, tighten all the hand knobs on the hub of the fixture to hold this position.

2. SUBTASK 72-45-00-030-051-B00 Install the Tooling to Position the HP Turbine Rotor and Stator Assembly (SBE 72-0075)

   SBE 72-0075: Recontoured stage 1 and 2 hubs

   1. Refer to Figure.

   2. Remove the cover from the rear of the HP turbine rotor and stator assembly.

   3. Install the IAE 1P16046 Removal/Installation fixture or IAE 1P16543 Removal/Installation fixture 1 off.

      1. Attach a standard two-cable sling to the two hoist rings on the fixture and attach the sling to a hoist.

      2. Release the hand knobs and move the center ring of the fixture to the rear until the flanged end is in line with the front surface of the hub of the fixture. Tighten two of the hand knobs (one in each row) to hold the center ring in this position.

      3. Lift the fixture and install on to the HP turbine assembly with the offset hole in fixture over the dowel pin in the HP turbine case flange. Remove the sling and hoist.

      4. Secure the fixture with the two-piece ring against the HP turbine rear flange front face and the large offset hole over the flare of the dowel pin. Hold in position with the 25 bolts and nuts.

      5. Hold the center ring of the fixture and release the hand knobs. Move the center ring of the fixture down until it touches the rear face of the second stage turbine hub.

      6. Remove the sling and the hoist.

   4. Install the IAE 1P16058 Removal/installation jaws assembly 1 off.

      1. Install the four jaws in to the second stage turbine bore.

      2. Move the jaws radially out so the lip on the jaws engage the groove on the hub and the socket head capscrews engage the flange of the fixture center ring.

      3. Install the jaw assembly sleeve in to the jaws to move the jaws out. Align the slots in the sleeve with the large socket head capscrews. Install the sleeve until the flange contacts the jaws.

      4. Secure the jaws to the sleeve with the eight capscrews. Tighten the capscrews.

      5. Check to see if HPT is in the proper running position.

         1. Use a parallel bar and a depth verner to measure the distance from the machined areas on the fixture to the flange on the HP turbine rear hub (dimension D), Figure.

            NOTE

            This dimension shoudl be an average of the two dimensions taken. Readings must be taken on unbroken part of surface on the hub flange.

         2. Subtract this dimension D from the dimension marked on the machined surface of the fixture. The result will be the HP turbine assembly running distance. This dimension must be 1.194 in. to 1.214 in. (30.33 mm to 30.84 mm).

         3. You can get this dimension by right or left turns on the center pedestal of the build stand.

         4. With the HP turbine assembly in the correct running position, tighten all the hand knobs on the hub of the fixture to hold this position.

3. SUBTASK 72-45-00-030-052 Remove the Ladder Lock

   1. Refer to Figure and Figure.

   2. Attach the scalloped plate detail of the IAE 1P16047 Hydraulic adapter 1 off to the center ring on the fixture with the 12 tool bolts. Tighten the bolts. Install the smaller plate to the center of the scalloped plate.

   3. Attach the IAE 1F10052 Two cables sling 1 off with a hoist to the trunnion spools on the fixture and lift the assembly from the build stand. Turn the assembly to the front end up position and lower into the IAE 1P16028 Build stand. Remove the sling and the hoist.

   4. Install the IAE 1P16051 Clamp 1 off and the hydraulic cylinder.

      1. Remove the locator from the center adapter on the build stand and install the hydraulic cylinder detail of the IAE 1P16047 Hydraulic adapter (with the threaded end down) to the center adapter on the stand.

      2. Install the detail clamp on to the stage 1 HP turbine hub. Position in to the internal fit.

      3. Install the jam nut on to one end of the rod and install the rod through the detail clamp, the scalloped adapter and the hydraulic cylinder. Hold in place with the washer and the nut. Hand tighten the nut.

      4. Attach the IAE 1F10026 Hydraulic hand pump 1 off to the hydraulic cylinder and operate to move the hubs together.

      5. Move the ladder lock up and out of the locked position.

      6. Release the hydraulic pressure.

      7. Remove the hand pump from the hydraulic cylinder.

      8. Remove the nut and the washer from the lower end of the shaft and remove the shaft.

      9. Remove the clamp from the end of the stage 1 HP turbine hub.

      10. Remove the ladder lock from the center of the hub.

      11. Remove the hydraulic cylinder from the center adapter on the stand.

4. SUBTASK 72-45-00-030-053 Trunnion the HP Turbine Rotor and Stator Assembly

   1. Refer to Figure and Figure.

   2. Install the IAE 1P16055 Locator plug 1 off, Figure.

      1. Install the plug and rod assembly down through the rotor and through the IAE 1P16047 Hydraulic adapter at the base of the IAE 1P16046 Removal/Installation fixture or IAE 1P16543 Removal/Installation fixture with the plug positioned in to the stage 1 turbine hub.

      2. Hold the plug and rod assembly in position with the washer and the nut. Tighten the nut.

   3. Attach IAE 1F10052 Two cables sling 1 off with a hoist to the trunnion spools on the fixture, Figure.

   4. Lift the HP turbine rotor and stator assembly from the build stand. Trunnion the assembly to the front end down position.

   5. Install the build stand locator on to the center adapter on the build stand.

   6. Lower the assembly in to the build stand with the locator plug positioned in to the locator on the build stand. Adjust the center locator on the build stand to support the rotor.

   7. Remove the sling and the hoist.

5. SUBTASK 72-45-00-030-054 Remove the Tooling from the HP Turbine Rotor and Stator Assembly

   1. Refer to Figure.

   2. Remove the nut and the washer which hold the locator plug in position. Use a wrench on the ID of the shaft and remove the locator plug shaft.

   3. Remove the IAE 1P16058 Removal/installation jaws assembly 1 off from the fixture. Refer to Figure.

      1. 

         CAUTION

         HP TURBINE ROTOR MUST BE SUPPORTED BY CENTER LOCATOR ON THE BUILD STAND TO PREVENT DAMAGE TO THE PARTS.

         Remove the hexagon head bolts which hold the inner sleeve to the jaws.

      2. Remove the inner sleeve from the jaws.

      3. Release the socket head capscrews which hold the jaws to the stage 2 rotor and remove the jaws from the rotor.

   4. Remove the IAE 1P16046 Removal/Installation fixture or IAE 1P16543 Removal/Installation fixture from the turbine rotor and stator assembly.

      1. Release and remove the 25 bolts and nuts which hold the two piece ring and the fixture to the HP turbine case rear flange. Remove the two piece ring.

      2. Attach a standard two-cable sling to a hoist and to the two lift rings on the fixture.

      3. Lift the fixture from the HP turbine rotor and stator assembly.

6. SUBTASK 72-45-00-030-055 Install the Retaining Fixture to the Stage 2 Turbine Rotor Assembly

   1. Refer to Figure.

   2. Preparation of the IAE 1P16063 Fixture 1 off before installation.

      1. Remove all the hook assemblies from the fixture.

      2. All the clamp assemblies must be turned 90 degrees and secured in this position.

      3. Position the ring assembly on to the rotor retaining plate inboard of the airseal.

      4. Install one hook assembly and depress to install between the blades, then turn to secure the hook on the blade leading edge. Do the same for three more hook assemblies at a 90 degree distance.

      5. Loosen the wingnuts on the six clamp assemblies and turn the clamps to engage the airseal on the retaining plate. Tighten the six wingnuts on the clamp assemblies.

      6. Install the other hook assemblies to secure all the blades.

7. SUBTASK 72-45-00-030-056 Remove the Stage 2 Turbine Rotor Assembly, from the Stage 1 Turbine Rotor Assembly

   1. Refer to Figure and Figure.

   2. Install the IAE 1P16054 Separate pusher 1 off.

      1. Install the expander assembly detail of the pusher in to the HP turbine rotor. Align the jaws with the ladder lock groove in the stage 1 turbine rotor hub. Turn the hexagon nut to extend the jaws out in to the groove until the nut can not move freely.

      2. Install the two jaws in to the internal diameter of the stage 2 turbine rotor hub 180 degrees apart. Hold the jaws out against the hub and secure with the swivel screw clamps.

      3. Install the ring assembly with the hydraulic cylinder through the jaws on the stage 2 rotor over the expander assembly. Secure the ring assembly to the jaws with the hexagon head bolts. Tighten the bolts.

      4. Attach the IAE 1F10026 Hydraulic hand pump 1 off to the hydraulic cylinder and operate to disengage the stage 2 rotor from the stage 1 rotor.

      5. Release the hydraulic pressure and remove the hand pump from the hydraulic cylinder.

      6. Release and remove the hexagon head bolts which hold the ring assembly to the jaws on the stage 2 rotor. Remove the ring assembly from the rotor.

      7. Release the swivel screw clamps and remove the two jaws from the stage 2 rotor.

      8. Turn the hexagon nut on the expander assembly to release the jaws from the stage 1 rotor and remove the expander assembly from the rotor.

   3. Install the IAE 1P16017 Lift fixture 1 off.

      1. Turn the three hooks on the lift fixture in.

      2. Install the lift fixture to the ID of the stage 2 turbine rotor assembly.

      3. Turn the jaws out to engage the jaws with the groove in the stage 2 turbine rotor. Tighten the hand knobs to hold the jaws in place.

      4. Attach a hoist to the lift fixture and remove the stage 2 turbine rotor from the assembly.

      5. Lower the stage 2 turbine rotor to the IAE 1P16140 Support base 1 off and remove the hoist, Figure.

      6. Remove the seal from the groove on the rear of the stage 2 HP turbine airseal. Discard the seal.

8. SUBTASK 72-45-00-030-072 Remove Spacer

   1. Remove No. 4 bearing spacer HP Turbine (HPT) Rotor And Stator Assembly (72-45-00, 01-061) thru HP Turbine (HPT) Rotor And Stator Assembly (72-45-00, 01-070) from the stage 1 turbine rotor assembly.

9. SUBTASK 72-45-00-030-057 Remove the Lift Fixture

   1. Refer to Figure.

   2. Release the hand knobs and turn the jaws in on the lift fixture.

   3. Remove the lift fixture.

10. SUBTASK 72-45-00-030-058 Remove the Retaining Fixture

    1. Refer to Figure.

    2. Loosen the wingnuts on the six clamp assemblies. Turn the clamp assembly feet to disengage the clamps from the retaining plate seal and tighten the wingnuts to hold the clamps in this position.

    3. Loosen the hook assemblies which secure the blades. Turn each hook assembly so the hook will not touch the blades and remove the hook assemblies from the fixture.

    4. Remove the retaining fixture from the stage 2 rotor assembly. Keep the hook assemblies with the fixture.

11. SUBTASK 72-45-00-220-239 Inspect HPT Stage 2 Rotor

    1. Examine the Stage 2 Rotor Assembly for soot and oil. If soot and oil found, do inspection of HPT for possible oil ignition event. Refer to TASK 72-45-00-200-801. Report all findings to IAE Technical Services.

12. SUBTASK 72-45-00-030-059 Remove the HP Turbine Case and Vane Assembly

    1. Refer to Figure.

    2. Attach the IAE 1P16173 Lift sling 1 off to a hoist and to the rear flange of the HP turbine case. Secure the sling to the case at three equally spaced bolt holes with the washers and the nuts. Tighten the nuts.

    3. Use the hoist to lift the HP turbine case and vane assembly slowly, from the stage 1 turbine rotor assembly and the stand.

    4. Put the case and vane assembly on the workbench and remove the sling and the hoist.

13. SUBTASK 72-45-00-220-240 Measure Bore Drop of the Stage 2 HP Turbine Airseal While Installed on HPT Stage 1 Rotor Assembly

    1. Refer to Figure.

    2. Use SPOP 209 (TASK 70-11-03-300-503) wipes to remove dirt and residue from rear flange and bore surface of the Stage 2 HP Turbine Airseal.

    3. Measure the bore drop of the Stage 2 HP Turbine Airseal per limits in TASK 72-45-00-200-000.

       1. If bore axial position out of limit, do inspection of HPT for possible oil ignition event. Refer to TASK 72-45-00-200-801. Report all findings to IAE Technical Services.

       2. If bore axial position is within the limits, make a record in the relevant part and engine documents.

14. SUBTASK 72-45-00-030-060-A00 Remove the Stage 2 HP Turbine Airseal (Pre SBE 72-0158)

    1. Refer to Figure, Figure and Figure.

    2. Install the lift assembly detail of the IAE 1P16055 Locator plug 1 off to the center of the stage 1 HP turbine hub and secure it to the detail plug. Attach a hoist to the lift assembly.

    3. Lift the stage 1 rotor assembly and airseal from the build stand and install it into the IAE 1P16140 Support base 1 off. Remove the hoist.

    4. Remove the lift assembly from the plug and remove the tools from the rotor assembly.

    5. Install the IAE 1P16031 remove puller 1 off.

       1. Push the four outer clamps in and pin them in this position.

       2. Install the puller in to the bore of the stage 1 turbine rotor assembly.

       3. Attach the IAE 1F10026 Hydraulic hand pump 1 off to the puller.

       4. Retract the hydraulic cylinder in the puller base to its shortest travel position.

       5. Remove the four pins and push the four clamps out, under the lip of the airseal, and install the four pins.

    6. Operate the hand pump to release the stage 2 HP turbine airseal.

    7. Remove the puller from the seal.

       1. Release the pressure from the hand pump and disconnect the hand pump from the hydraulic cylinder.

       2. Remove the four pins from the four clamps and push the clamps in. Install the pins in the clamps.

       3. Remove the puller from the seal assembly.

    8. Remove the stage 2 HP turbine airseal from the stage 1 turbine rotor assembly.

    9. Remove and discard the two seals from the rear of the stage 1 turbine rotor assembly.

15. SUBTASK 72-45-00-030-060-B00 Remove the Stage 2 HP Turbine Airseal (SBE 72-0158)

    SBE 72-0158: Remove the stage 1 and 2 turbine wire seal

    1. Refer to Figure, Figure and Figure.

    2. Install the lift assembly detail of the IAE 1P16055 Locator plug 1 off to the center of the stage 1 HP turbine hub and secure it to the detail plug. Attach a hoist to the lift assembly.

    3. Lift stage 1 rotor assembly and airseal from the build stand and install it into the IAE 1P16140 Support base 1 off. Remove the hoist.

    4. Remove the lift assembly from the plug and remove the tools from the rotor assembly.

    5. Install the IAE 1P16031 remove puller 1 off.

       1. Push the four outer clamps in and pin them in this position.

       2. Install the puller into the bore of the stage 1 turbine rotor assembly.

       3. Attach the IAE 1F10026 Hydraulic hand pump 1 off to the puller.

       4. Retract the hydraulic cylinder in the puller base to its shortest travel position.

       5. Remove the four pins and push the four clamps out, under the lip of the airseal, and install the four pins.

    6. Operate the hand pump to release the stage 2 HP turbine airseal.

    7. Remove the puller from the seal.

       1. Release the pressure from the hand pump and disconnect the hand pump from the hydraulic cylinder.

       2. Remove the four pins from the four clamps and push the clamps in. Install the pins in the clamps.

       3. Remove the puller from the seal assembly.

    8. Remove the stage 2 HP turbine airseal from the stage 1 turbine rotor assembly.

    9. Remove and discard the seal from the rear of the stage 1 turbine rotor assembly.

16. SUBTASK 72-45-00-220-241 Inspect the Stage 2 HP Turbine Airseal, Regardless of Whether the Seal is to be Returned to Service or Not

    1. Examine the Stage 2 HP Turbine Airseal for soot and oil. If soot and oil found, do inspection of HPT for possible oil ignition event. Refer to TASK 72-45-00-200-801. Report all findings to IAE Technical Services.

    2. Examine the Stage 2 HP Turbine Airseal part numbers 2A0487, 2A1159, 2A1160, 2A3108, 2A3179, 2A3185, 2A3425, 2A3596 for cracks. Refer to TASK 72-45-00-200-000.

Figure: Install tooling for the HP turbine rotor and stator assembly

Install tooling for the HP turbine rotor and stator assembly



Figure: HP turbine rotor and stator assembly clamp installation

HP turbine rotor and stator assembly clamp installation



Figure: Turn HP turbine rotor and stator assembly

Turn HP turbine rotor and stator assembly



Figure: Locator plug installation

Locator plug installation



Figure: HP turbine rotor and stator locator plug installation

HP turbine rotor and stator locator plug installation



Figure: IAE 1P16064 retaining fixture installation

IAE 1P16064 retaining fixture installation



Figure: IAE 1P16054 separate pusher

IAE 1P16054 separate pusher



Figure: Remove stage 2 turbine rotor assembly

Remove stage 2 turbine rotor assembly



Figure: Install the stage 2 turbine rotor assembly to the support

Install the stage 2 turbine rotor assembly to the support



Figure: Remove the HP turbine case and vane assembly

Remove the HP turbine case and vane assembly



Figure: Remove the stage 1 rotor assembly and airseal from the build stand

Remove the stage 1 rotor assembly and airseal from the build stand



Figure: Stage 1 HP turbine rotor assembly and airseal

Stage 1 HP turbine rotor assembly and airseal



Figure: Pre SBE 72-0158: Remove the stage 2 HP turbine airseal

Pre SBE 72-0158: Remove the stage 2 HP turbine airseal



Figure: SBE 72-0158: Remove the stage 2 HP turbine airseal

SBE 72-0158: Remove the stage 2 HP turbine airseal



Figure: Measure the Stage 2 HP Turbine Airseal

Measure the Stage 2 HP Turbine Airseal