DMC:V2500-A0-72-32-0000-10A-530A-B|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.).
Common Information
TASK 72-32-00-030-010 LPC/Intermediate Case Module - Remove The LP Shaft And No. 1 And No. 2 Bearing Assembly, Disassembly-010
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.
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.
The No.1 strut, which is the top position strut of the fan frame assembly, is identified by the five pressure tubes on the No. 1 strut leading edge.
This TASK gives the procedure to remove the LP shaft, No. 1 and No. 2 bearing assembly.
NOTE
Special tools are identified in the procedure by the tool primary number.
Preliminary Requirements
Pre-Conditions
NONEConsumables, Materials and Expendables
NONESpares
NONESafety Requirements
NONEProcedure
SUBTASK 72-32-00-030-126 Turn the Fan Frame Horizontally with the No.1 Strut Up
Make sure that the fan frame is installed, vertically with the front end up, on the turnover stand. Refer to TASK 72-32-00-030-009-A00.
Release the lock pin from the holes in the handle and the support C of the turnover stand.
Turn the handle to set the fan frame horizontally with the No. 1 strut up.
NOTE
Make sure that the hole in the support C and one of the eight holes in the handle are aligned. If necessary, turn the handle to make the two holes aligned.
Install the lock pin into position to lock the handle of the turnover stand.
SUBTASK 72-32-00-030-127-A00 V2500-A1 Release the Hydraulic Seal Assembly from the Stub Shaft
Remove three of the six screws which attach the short holder to the stub shaft. The three screws must be at three equally spaced positions.
Attach the plates to the short holder and safety with the three bolts and washers. Tighten the bolts lightly.
Attach the plates to the No. 1 bearing support and safety with the three bolts, three nuts and the six washers. Tighten the bolts lightly.
Make sure that all bolts are installed. Tighten the bolts.
Install the cam and the plate assembly (part of the mechanical puller) into the clearance between the hydraulic seal assembly and the stub shaft.
Turn the cam to set the plates to the fully retracted position.
Put the cam and the plate assembly into position in the hydraulic seal assembly.
Turn the cam to fully extend the plates. Make sure that they are installed in the clearance.
Put the set bolt and cap bracket assembly (part of the mechanical puller) into position in the stub shaft. Set the position of the cap bracket so that its rear face touches the plate.
Make sure that the nut, the slotted set screw and the bracket (part of the mechanical puller) are removed from the set bolt. If they are installed, remove them. Refer to Step, Step, and Step.
Move the set bolt and cap bracket assembly adjacent to the front end of the stub shaft.
Align the set bolt with the stub shaft axis.
Turn the cap bracket to set its rear end face horizontal to move it through the stub shaft. Refer to Figure.
Move the set bolt and cap bracket assembly into the stub shaft until the cap bracket is adjacent to the cam and plate assembly.
Turn the cap bracket to set its rear end face vertical and attach it to the cam and plate assembly.
Install the bracket (part of the mechanical puller) onto the front flange of the stub shaft.
Move the bracket onto the front flange through the set bolt.
Align the four threaded holes in the bracket with the slots in the front flange.
Install the four set screws in the threaded holes in the bracket to lock. Tighten the set screws.
Install the two slotted set screws (part of the mechanical puller) into the bracket.
Align the two slots in the set bolts with threaded holes in the bracket.
Install the slotted set screws into the threaded holes. Turn the slotted set screws until they engage with the slots.
Lubricate the threads on the bracket and the nut with approved engine oil. Install the nut (part of the mechanical puller) onto the bracket through the set bolt.
Turn the nut counter-clockwise to move the set bolt rearwards until the hydraulic seal assembly is released from the stub shaft.
Hold the square rod end of the set bolt with a wrench while you turn the nut.
Turn the nut with a second wrench.
Remove the nut from the set bolt.
Remove the two slotted set screws from the bracket.
Remove the four screws from the bracket. Remove the bracket from the front flange of the stub shaft.
Turn the cap bracket to set its rear end face horizontal to move it through the stub shaft. Refer to Figure. Remove the set bolt and cap bracket assembly from the stub shaft.
Turn the cam to fully retract the plates. Remove the cam and plate assembly from the hydraulic seal assembly.
Remove the three plates from the short holder and the No. 1 bearing support.
Remove the three bolts and washers which attach the plates to the short holder.
Remove the three bolts, three nuts and the six washers which attach the plates to the No. 1 bearing support. Remove the three plates.
Install the three screws, which were removed in Step to the initial positions.
SUBTASK 72-32-00-030-127-B00 V2500-A5 Release the Hydraulic Seal Assembly from the Stub Shaft
Remove the three of the six screws which attach the short holder to the stub shaft. The three screws must be at three equally spaced positions.
Attach the plates to the short holder and safety with the three bolts and washers. Tighten the bolts lightly.
Attach the plates to the No. 1 bearing support and safety with the three bolts, three nuts and the six washers. Tighten the bolts lightly.
Make sure that all bolts are installed. Tighten the bolts.
Install the cam and the plate assembly (part of the mechanical puller) into the clearance between the hydraulic seal assembly and the stub shaft.
Turn the cam to set the plates to the fully retracted position.
Put the cam and the plate assembly into position in the hydraulic seal assembly.
Turn the cam to fully extend the plates. Make sure that they are installed in the clearance.
Put the set bolt and cap bracket assembly (part of the mechanical puller) into position in the stub shaft. Set the position of the cap bracket so that its rear face touches the plate.
Make sure that the nut, the slotted set screw and the bracket (part of the mechanical puller) are removed from the set bolt. If they are installed, remove them. Refer to Step, Step and Step.
Move the set bolt and cap bracket assembly adjacent to the front end of the stub shaft.
Align the set bolt with the stub shaft axis.
Turn the cap bracket to set its rear end face horizontal to move it through the stub shaft. Refer to Figure.
Move the set bolt and cap bracket assembly into the stub shaft until the cap bracket is adjacent to the cam and plate assembly.
Turn the cap bracket to set its rear end face vertical and attach it to the cam and plate assembly.
Install the bracket (part of the mechanical puller) onto the front flange of the stub shaft.
Move the bracket onto the front flange through the set bolt.
Align the four threaded holes in the bracket with the slots in the front flange.
Install the four set screws in the threaded holes in the bracket to lock. Tighten the set screws.
Install the two slotted set screws (part of the mechanical puller) into the bracket.
Align the two slots in the set bolts with threaded holes in the bracket.
Install the slotted set screws into the threaded holes. Turn the slotted set screws until they engage with the slots.
Lubricate the threads on the bracket and the nut with approved engine oil. Install the nut (part of the mechanical puller) onto the bracket through the set bolt.
Turn the nut counter-clockwise to move the set bolt rearwards until the hydraulic seal assembly is released from the stub shaft.
Hold the square rod end of the set bolt with a wrench while you turn the nut.
Turn the nut with a second wrench.
Remove the nut from the set bolt.
Remove the two slotted set screws from the bracket.
Remove the four screws from the bracket. Remove the bracket from the front flange of the stub shaft.
Turn the cap bracket to set its rear end face horizontal to move it through the stub shaft. Refer to Figure. Remove the set bolt and cap bracket assembly from the stub shaft.
Turn the cam to fully retract the plates. Remove the cam and plate assembly from the hydraulic seal assembly.
Remove the three plates from the short holder and the No. 1 bearing support.
Remove the three bolts and washers which attach the plates to the short holder.
Remove the three bolts, three nuts and the six washers which attach the plates to the No. 1 bearing support. Remove the three plates.
Install the three screws, which were removed in Step to the initial positions.
SUBTASK 72-32-00-030-128 Turn the Fan Frame Vertically with the Front End Up
Release the lock pin from the holes in the handle and the support C of the turnover stand.
Turn the handle to set the fan frame vertically with the front end up.
NOTE
Make sure that the hole in the support C and one of the eight holes in the handle are aligned. If necessary, turn the handle to make the two holes aligned.
Install the lock pin into position to lock the handle of the turnover stand.
SUBTASK 72-32-00-030-129 Remove the LP Shaft, No. 1 and No. 2 Bearing Assembly (Shaft Assembly) from the No.1 Bearing Support
Remove the 18 bolts which attach the No.1 bearing outer race of the shaft assembly to the No. 1 bearing support front flange, Figure.
Align the six holes in the vertical sling with six of the 24 nuts of the shaft assembly.
Attach the vertical sling to the shaft assembly. Safety the vertical sling with the six bolts (part of the vertical sling). Tighten the bolts.
Attach a hoist to the vertical sling.
Use the three puller bolts (part of IAE 1J12188 Puller bolt 1 off) to release the No. 1 bearing outer race from the No. 1 bearing support.
Install the three puller bolts into the threaded holes in the No. 1 bearing outer race.
Tighten the three puller bolts equally until the No. 1 bearing outer race is released from the No. 1 bearing support.
Remove the puller bolts from the threaded holes in the No. 1 bearing outer race.
Slowly lift the shaft assembly until it is clear of the No. 1 bearing support.
CAUTION
CAREFULLY LOWER THE SHAFT ASSEMBLY SO THAT THE NO.2 BEARING INNER RACE DOES NOT TOUCH THE STORAGE STAND.
Remove the hoist from the vertical sling.
Remove the six bolts which attach the vertical sling to the shaft assembly. Remove the vertical sling.
Requirements After Job Completion
Follow-On Conditions
NONE
