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 72-45-21-840-001 HPT Case - Rework The Case And Case Bracket, Rework-001 - SBE 72-0002
General
The practices and procedures referred to in the procedure by the TASK number are in the SPM.
Refer to the indicated Service Bulletin for specific application requirements.
You must do the rework stage 1 HPT support assembly given in TASK 72-44-10-840-001, SBE 72-0002 - REWORK 001 and stage 2 HPT support assembly given in TASK 72-45-27-840-001, SBE 72-0002 - REWORK 001 at the same time you do the rework given in this procedure.
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
NONEConsumables, Materials and Expendables
NONESafety Requirements
NONEProcedure
Refer to Figure.
Set up and machine the flange bolt holes on the front flange of the turbine case.
Refer to Figure.
Set up and machine the location pin hole on the front flange of the turbine case.
Refer to Figure.
Set up and machine the flange bolt holes on the rear flange of the turbine case.
SUBTASK 72-45-21-320-051 Machine the Turbine Case
NUMBER BEFORE - 2A0200.
NEW NUMBER - 2A1599.
Refer to Figure requirements.
Make a permanent mark by the procedures given in the SPM TASK 70-09-00-400-501.
Use the vibration peen method.
Mark the new part number adjacent to the part number that was there before.
SUBTASK 72-45-21-350-074 Identify the HP Turbine Case
Refer to Figure.
Transfer drill through the holes in the turbine case to enlarge three holes in the turbine case bracket.
Refer to Figure and the SPM TASK 70-39-00-390-501.
Rivet the turbine case bracket to the turbine case.
SUBTASK 72-45-21-350-075 Rework the Turbine Case Bracket
NUMBER BEFORE - 2A0286.
NEW NUMBER - 2A1595.
Refer to Figure requirements.
Make a permanent mark by the procedures given in the SPM TASK 70-09-00-400-501.
Use the vibration peen method.
Mark the new part number adjacent to the part number that was there before.
SUBTASK 72-45-21-350-076 Identify the Turbine Case Bracket
Refer to Figure.
Install the 2A1596 shoulder pin (1 off) in the rear flange of the turbine case assembly.
SUBTASK 72-45-21-350-077 Rework the Turbine Case Assembly
NUMBER BEFORE - 2A0250.
NEW NUMBER - 2A1600.
Refer to Fig Figure requirements.
Make a permanent mark by the procedures given in the SPM TASK 70-09-00-400-501.
Use the vibration peen method.
Mark the new part number adjacent to the part number that was there before.
SUBTASK 72-45-21-350-078 Identify the Turbine Case Assembly
Figure: Rework of the HP turbine case assembly
Rework of the HP turbine case assembly

Figure: Rework of the HP turbine case assembly
Rework of the HP turbine case assembly

Figure: Rework of the HP turbine case assembly
Rework of the HP turbine case assembly

