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 72-50-10-430-008 LPT Case And Rotor Assembly - Assemble The LPT Stage 6 Rotor Assembly To The LPT, Assembly-008
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.
For all parts identified in a different Chapter/Section/Subject, the applicable Chapter/Section/Subject comes before the Fig/item number.
For standard torque data and procedures, refer to the SPM TASK 70-41-01-400-501 and SPM TASK 70-41-02-400-501.
Special torque data and assembly tolerances are included in the procedure.
The number for each radial location must be identified in a clockwise direction. These start at the engine top position when you look from the rear of the engine, unless stated differently in the procedure.
Use new bolts and new nuts.
NOTE
NOTE
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Depth gage | LOCAL | Depth gage | ||
| IAE 1M14010 Assembly/Disassembly fixture | 0AM53 | IAE 1M14010 | 1 | |
| IAE 1M14014 Support fixture | 0AM53 | IAE 1M14014 | 1 | |
| IAE 1M14030 Assembly trolley | 0AM53 | IAE 1M14030 | 1 | |
| IAE 1M14050 Locating disk | 0AM53 | IAE 1M14050 | 1 | |
| IAE 1M14052 Special wrench | 0AM53 | IAE 1M14052 | 1 | |
| IAE 1M14053 Torque wrench adapter | 0AM53 | IAE 1M14053 | 1 | |
| IAE 1M14054 Torque wrench adapter | 0AM53 | IAE 1M14054 | 1 | |
| IAE 1M14059 Lifting fixture | 0AM53 | IAE 1M14059 | 1 | |
| IAE 1M14063 Guide fixture | 0AM53 | IAE 1M14063 | 1 | |
| IAE 1M14066 Heating fixture | 0AM53 | IAE 1M14066 | 1 | |
| IAE 1M14069 Position retainer | 0AM53 | IAE 1M14069 | 36 | |
| IAE 1M14074 Heating fixture carrier | 0AM53 | IAE 1M14074 | 1 | |
| IAE 1M14096 Special wrench | 0AM53 | IAE 1M14096 | 1 | |
| IAE 1M14110 Turnover stand | 0AM53 | IAE 1M14110 | 1 | |
| IAE 1M14124 Protector ring segment | 0AM53 | IAE 1M14124 | 3 | |
| IAE 1M14131 Guide pin | 0AM53 | IAE 1M14131 | 1 | |
| IAE 1M14135 Installation bolt/nut | 0AM53 | IAE 1M14135 | 6 | |
| IAE 1M14155 Clamping ring | 0AM53 | IAE 1M14155 | 1 | |
| IAE 1M14156 Lifting fixture | 0AM53 | IAE 1M14156 | 1 | |
| IAE 6F10027 Heater control unit | 0AM53 | IAE 6F10027 | 1 | |
| Straight edge | LOCAL | Straight edge |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 10-129 ANTI-SEIZE PASTE | 34568 | CoMat 10-129 | ||
| CoMat 10-129A ANTI-SEIZE PASTE | 71984 | CoMat 10-129A |
Spares
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Bolt | 36 | 72-50-10, 01-150 | ||
| Nut | 36 | 72-50-10, 01-170 |
Safety Requirements
WARNING
Procedure
Refer to: Figure
Calculate the clearance at location 3359.
Table 1. Fits and Clearances (all dimensions are in inches) NEW PART
DIMENSIONS
WORN PART
DIMENSIONS
REJECT IF
PART IDENT
Size
Clearance
(Non-select)
MORE THAN
LOCATION 3359
Stage 3 to 5 turbine disk to the
abutment diameter of the stage 6
turbine disk LPT Stage 3, 4, 5, 6, 7 Disks (72-50-31,01-050)
Stage 5 disk diameter
19.3189
19.3150
Intf
0.0276
Intf
0.0295
Stage 6 disk diameter
19.2953
19.2913
0.0197
0.0138
Table 2. Fits and Clearances (all dimensions are in millimeters) NEW PART
DIMENSIONS
WORN PART
DIMENSIONS
REJECT IF
PART IDENT
Size
Clearance
(Non-select)
MORE THAN
LOCATION 3359
Stage 3 to 5 turbine disk to the
abutment diameter of the stage 6
turbine disk LPT Stage 3, 4, 5, 6, 7 Disks (72-50-31,01-050)
Stage 5 disk diameter
490.70
490.60
Intf
0.70
Intf
0.75
Stage 6 disk diameter
490.10
490.00
0.50
0.35
SUBTASK 72-50-10-220-097-A00 V2500-A1: Make sure that the Fits and Clearances of the Stage 5 Turbine Disk and the Stage 6 Turbine Disk are in the Limits given at Location 3359 (Pre SBE 72-0138)
Refer to: Figure
SBE 72-0138: Rotor and stator assembly introduce new LP turbine blades and vanes
Calculate the clearance at location 3659.
Table 3. Fits and Clearances (all dimensions are in inches) NEW PART
DIMENSIONS
WORN PART
DIMENSIONS
REJECT IF
PART IDENT
Size
Clearance
(Non-select)
MORE THAN
LOCATION 3659
Stage 3 to 5 turbine disk to the
abutment diameter of the stage 6
turbine disk LPT Stage 3, 4, 5, 6, 7 Disks (72-50-31,01-050)
Stage 5 disk diameter
19.3189
19.3150
Intf
0.0276
Intf
0.0295
Stage 6 disk diameter
19.2953
19.2913
0.0197
0.0138
Table 4. Fits and Clearances (all dimensions are in millimeters) NEW PART
DIMENSIONS
WORN PART
DIMENSIONS
REJECT IF
PART IDENT
Size
Clearance
(Non-select)
MORE THAN
LOCATION 3659
Stage 3 to 5 turbine disk to the
abutment diameter of the stage 6
turbine disk LPT Stage 3, 4, 5, 6, 7 Disks (72-50-31,01-050)
Stage 5 disk diameter
490.70
490.60
Intf
0.70
Intf
0.75
Stage 6 disk diameter
490.10
490.00
0.50
0.35
SUBTASK 72-50-10-220-097-B00 V2500-A1: Make sure that the Fits and Clearances of the Stage 5 Turbine Disk and the Stage 6 Turbine Disk are in the Limits given at Location 3659 (SBE 72-0138)
Refer to: Figure
Calculate the clearance at location 3759.
Table 5. Fits and Clearances (all dimensions are in inches) NEW PART
DIMENSIONS
WORN PART
DIMENSIONS
REJECT IF
PART IDENT
Size
Clearance
(Non-select)
MORE THAN
LOCATION 3759
Stage 3 to 5 turbine disk to the
abutment diameter of the stage 6
turbine disk LPT Stage 3, 4, 5, 6, 7 Disks (72-50-31,01-050)
Stage 5 disk diameter
19.3189
19.3150
Intf
0.0276
Intf
0.0295
Stage 6 disk diameter
19.2953
19.2913
0.0197
0.0138
Table 6. Fits and Clearances (all dimensions are in millimeters) NEW PART
DIMENSIONS
WORN PART
DIMENSIONS
REJECT IF
PART IDENT
Size
Clearance
(Non-select)
MORE THAN
LOCATION 3759
Stage 3 to 5 turbine disk to the
abutment diameter of the stage 6
turbine disk LPT Stage 3, 4, 5, 6, 7 Disks (72-50-31,01-050)
Stage 5 disk diameter
490.70
490.60
Intf
0.70
Intf
0.75
Stage 6 disk diameter
490.10
490.00
0.50
0.35
SUBTASK 72-50-10-220-097-C00 V2500-A5: Make sure that the Fits and Clearances of the Stage 5 Turbine Disk and the Stage 6 Turbine Disk are in the Limits given at Location 3759
Refer to Figure.
Install the two halves of the IAE 1M14155 Clamping ring 1 off to the stage 6 disk.
SUBTASK 72-50-10-430-132 Install the Clamping Ring to the Stage 6 Disk
Refer to Figure.
Use hoist equipment to install the IAE 1M14156 Lifting fixture 1 off to the clamping ring.
Lift the stage 6 disk and put it on to the IAE 1M14030 Assembly trolley 1 off, front side up.
SUBTASK 72-50-10-430-133 Put the Stage 6 Disk on to the Assembly Trolley
Install the IAE 1M14131 Guide pin 1 off in to a hole 175 to 185 degrees apart of the identified high point position of the stage 6 front flange.
Compress the IAE 1M14069 Position retainer 1 off and put it under the guide pin.
SUBTASK 72-50-10-430-134 Install the Guide Pin to the Stage 6 Disk
NOTE
The high point position of the stage 6 rotor is marked on the disk hub by a circled dash symbol. Refer to TASK 72-50-30-440-004 (ASSEMBLY-004).Refer to: Figure
Install 60 degrees apart 6 installation bolts, parts of the IAE 1M14135 Installation bolt/nut 6 off at the front flange of the stage 6 disk. Keep the installation bolts in position with the IAE 1M14069 Position retainer 6 off. Compress the position retainers and put them under the bolt heads.
SUBTASK 72-50-10-430-135 Install the Six Installation Bolts and the Position Retainers to the Stage 6 Disk
Use the hoist equipment to install the IAE 1M14156 Lifting fixture 1 off to the clamping ring.
Put the stage 6 disk, front side down, on to the IAE 1M14030 Assembly trolley 1 off.
SUBTASK 72-50-10-430-242 Turn the Stage 6 Disk on the Assembly Trolley
Refer to: Figure
Use hoist equipment to install the IAE 1M14059 Lifting fixture 1 off. Make sure that the clamps of the lifting fixture are locked in the inner position.
SUBTASK 72-50-10-430-136 Attach the Lifting Fixture on to the Stage 6 Disk
Refer to: Figure
Put the IAE 1M14066 Heating fixture 1 off on to the IAE 1M14074 Heating fixture carrier 1 off. The two locating pins must engage to the bushings of the heating fixture carrier.
SUBTASK 72-50-10-430-137 Install the Heating Fixture on to the Heating Fixture Carrier
Refer to: Figure
SUBTASK 72-50-10-430-138 Install the Heating Fixture Carrier with the Heating Fixture on to the LP Turbine Case
Refer to: Figure
NOTE
Make sure that the temperature feeler of the heating fixture touches the stage 6 air seal.
SUBTASK 72-50-10-430-139 Install the Stage 6 Disk to the Heating Fixture
Refer to: Figure
Increase the temperature of the stage 6 disk front flange with the heating fixture. Use the IAE 6F10027 Heater control unit 1 off.
NOTE
The temperature of the stage 6 parts must not have more than 464.0 deg F (240.0 deg C).
SUBTASK 72-50-10-430-140 Increase the Temperature of the Stage 6 Disk Front Flange
Refer to: Figure
SUBTASK 72-50-10-430-141 Remove the Heating Fixture from the LP Turbine Case
Refer to: Figure

CAUTION
MAKE SURE THAT THE IAE 1M14124 PROTECTOR RING SEGMENTS 3 OFF ARE NOT INSTALLED.NOTE
The high point position of the stage 5 rotor is marked on the disk hub by a circled dash symbol. Refer to TASK 72-50-30-440-003 (ASSEMBLY-004).Engage the guide cable, part of the guide pin, through the hole near the identified high point position of the stage 5 disk.
SUBTASK 72-50-10-430-142 Install the Stage 6 Disk on to the Stage 5 Disk Rear Flange
Refer to: Figure
SUBTASK 72-50-10-430-143 Remove the Lifting Fixture from the Stage 6 Disk
Refer to: Figure
Put the IAE 1M14050 Locating disk 1 off in to the IAE 1M14014 Support fixture 1 off.
SUBTASK 72-50-10-430-144 Attach the Locating Disk in to the Support Fixture
Refer to: Figure
SUBTASK 72-50-10-430-145 Install the Support Fixture and the Locating Disk on to the LP Turbine Case
Refer to: Figure
Remove the IAE 1M14063 Guide fixture from the IAE 1M14010 Assembly/Disassembly fixture.
SUBTASK 72-50-10-430-146 Remove the Guide Fixture from the Assembly/Disassembly Fixture
Release the holding flanges of the IAE 1M14110 Turnover stand 1 off.
SUBTASK 72-50-10-430-147 Turn the LP Turbine Case and Rotor in the Turnover Stand
Refer to: Figure
Install 6 installation nuts, parts of the IAE 1M14135 Installation bolt/nut 6 off. Use the IAE 1M14052 Special wrench 1 off.
Tighten the nuts. Use the IAE 1M14096 Special wrench 1 off.
Torque the installation nuts from 119.0 to 133.0 lbfin. (13.5 to 15 Nm). Use the IAE 1M14053 Torque wrench adapter 1 off.
SUBTASK 72-50-10-430-148 Install the Installation Nuts on to the Installation Bolts
Lubricate all new bolts and new nuts with CoMat 10-129 ANTI-SEIZE PASTEA as follows.

CAUTION
HOLD THE BOLTS IN THEIR POSITION WHEN YOU INSTALL/REMOVE THE NUTS ON TO/FROM THE BOLTS. DO NOT TURN THE BOLTS OR MAKE TO-AND-FRO MOVEMENTS. THE DISK-/INNER AIR SEAL FLANGES AND/OR THE BOLTS CAN BE DAMAGED BY SCORES.MAKE SURE THAT THE LOCKING TORQUE OF THE NUTS IS BETWEEN 3.5 AND 30.0 LBFIN (0.4 AND 3.4 NM). TURN THE NUTS DOWN ON TO THE BOLTS UNTIL FINGER TIGHT. CONTINUE TO TURN THE NUTS WITH A WRENCH. MAKE SURE THAT THE NUTS GIVE SUFFICIENT RESISTANCE. IT SHOWS THAT THE SELF LOCKING PROPERTY IS STILL AVAILABLE.IT IS PERMITTED TO USE POWER TOOLS TO TURN THE NUTS ON TO THE REMAINING BOLT THREADS. MAKE SURE THAT THE POWER TOOL IS SET TO A TORQUE VALUE WHICH IS NOT MORE THAN 50 PERCENT OF THE FINAL TORQUE VALUE. THE SPEED MUST BE SLOW TO PREVENT INCREASE OF HEAT, WHICH CAN CAUSE THREAD PICK-UP AND SEIZURE.Install 30 new bolts. Keep the bolts in position with the IAE 1M14069 Position retainer 30 off.
Install the new nuts. Use the IAE 1M14052 Special wrench 1 off.
Tighten the nuts. Use the IAE 1M14096 Special wrench 1 off.
Loosen the six installation nuts. Use the IAE 1M14053 Torque wrench adapter 1 off.
Remove the six installation nuts. Use the IAE 1M14096 Special wrench.
Install the remaining six new bolts. Keep the bolts in position with IAE 1M14069 Position retainer 6 off.
Install the 6 remaining new nuts. Use the IAE 1M14052 Special wrench to install the nuts.
Tighten the six nuts with the IAE 1M14096 Special wrench.

CAUTION
MAKE SURE THAT ALL INSTALLATION BOLTS AND INSTALLATION NUTS ARE REPLACED.NOTE
The tightening torque value includes the self locking torque value.Torque the nuts with the IAE 1M14053 Torque wrench adapter in two steps. For the torque sequence, refer to Figure.
Check all nuts again in clockwise direction for final torque. Use the IAE 1M14053 Torque wrench adapter 1 off.
SUBTASK 72-50-10-430-150 Attach the Stage 5 Disk and the Stage 6 Disk with the Bolts and the Nuts
Refer to: Figure
SUBTASK 72-50-10-430-153 Remove the Locating Disk and the Support Fixture
Refer to: Figure
SUBTASK 72-50-10-430-154 Install the Guide Fixture on to the Assembly/Disassembly Fixture
Move the lifting ring, of the IAE 1M14010 Assembly/Disassembly fixture from the zero-position into the 'lifting-position' with the lever.
SUBTASK 72-50-10-430-293 Move the Lifting Ring
Figure: Lift and Turn the Stage 6 with the Clamping Ring
Lift and Turn the Stage 6 with the Clamping Ring

Figure: Increase the Temperature of the Stage 6 Disk with the Heating Fixture
Increase the Temperature of the Stage 6 Disk with the Heating Fixture

Figure: Install the Stage 6 Disk
Install the Stage 6 Disk

Figure: Install the Locating Disk and the Support Fixture to the Stage 6 Disk
Install the Locating Disk and the Support Fixture to the Stage 6 Disk

Figure: Torque Sequence of the Nuts which Attach the Stage 5 Disk and the Stage 6 Disk
Torque Sequence of the Nuts which Attach the Stage 5 Disk and the Stage 6 Disk

Figure: Pre SBE 72-0138 V2500-A1: Fits and Clearances of the Stage 6 Rotor
Sheet 1

Figure: SBE 72-0138 V2500-A1: Fits and Clearances of the Stage 6 Rotor
Sheet 2

Figure: V2500-A5: Fits and Clearances of the Stage 6 Rotor
V2500-A5: Fits and Clearances of the Stage 6 Rotor

Figure: Install and Tighten the Nuts with Special Wrenches
Install and Tighten the Nuts with Special Wrenches

Figure: Lubrication of the Bolt Threads and the Nut Mating Surfaces
Lubrication of the Bolt Threads and the Nut Mating Surfaces

