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 72-41-21-300-033 HPC Stage 11 Case - Repair The HPC Stage 11 Case And Stage 12 Rotor Path Assembly By Replacement Of The Shank Nuts, Repair-033 (VRS6219)
Material of component
PART IDENT | MATERIAL |
HP compressor case assembly | Heat resisting alloy |
Nut self locking shank |
General
This repair must only be done when the instruction to do so is given in 72-41-21 Inspection.
This repair has been issued for HP compressor stage 11 case assembly and stage 12 rotor path assembly shank nut damage.
The practices and processes referred to in the procedure by the TASK/SUBTASK number are in the SPM.
Price and Availability
Refer to International Aero Engines
Related Repairs - None
NOTE
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Drill | LOCAL | Drill | 5.7 mm (0.224 in.) diameter | |
| Chemical cleaning equipment | LOCAL | Chemical cleaning equipment | ||
| Dimensional inspection equipment | LOCAL | Dimensional inspection equipment | ||
| Penetrant Crack Test Equipment | LOCAL | Penetrant crack test equipment | ||
| Standard workshop equipment | LOCAL | Standard workshop equipment | ||
| Vibrating marking pencil | LOCAL | Vibrating marking pencil | ||
| IAE 3R18591 Swage bush | 0AM53 | IAE 3R18591 | 1 | |
| IAE 3R18592 Tool bolt | 0AM53 | IAE 3R18592 | 1 |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 06-022 FLUORESCENT PENETRANT (POST-EMULSIFIED ULTRA HIGH SENSITIVITY) | LOCAL | CoMat 06-022 |
Spares
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Nut self locking shank | AS44750 | A/R |
Safety Requirements
NONEProcedure
Refer to the SPM TASK 70-11-03-300-503.
Use chemical cleaning equipment.
Chemically clean.
SUBTASK 72-41-21-110-230 Clean the Assembly
Refer to the SPM TASK 70-35-11-300-501, SUBTASK 70-35-11-350-001.
Drill the flare until the nut is released. Remove the nut.
SUBTASK 72-41-21-350-089 Remove Damaged Shank Nuts
Refer to SPM TASK 70-23-05-230-501.
Use penetrant crack test equipment.
Cracks are not permitted.
Do a local penetrant crack test in the repaired area(s).
SUBTASK 72-41-21-230-099 Do a Crack Test
Refer to the SPM TASK 70-11-26-300-503.
Use chemical cleaning equipment.
Chemically clean the repaired area(s) to remove fluorescent penetrant.
SUBTASK 72-41-21-110-209 Chemically Clean
Refer to SPM TASK 70-35-11-300-501, SUBTASK 70-35-11-350-001.
Install new nut into the hole.
Use IAE 3R18591 Swage bush 1 off and IAE 3R18592 Tool bolt 1 off.
Hold nut and swage the flange.
SUBTASK 72-41-21-350-213 Install the new Shank Nuts
Figure: Repair Details and Dimensions - Assembly A and Assembly B
Repair Details and Dimensions - Assembly A and Assembly B

Figure: Repair Details and Dimensions - Assembly C
Repair Details and Dimensions - Assembly C

Figure: Repair Details and Dimensions - Assembly A, Assembly B and Assembly C
Repair Details and Dimensions - Assembly A, Assembly B and Assembly C

Figure: Repair Details and Dimensions - Assembly A, Assembly B and Assembly C
Repair Details and Dimensions - Assembly A, Assembly B and Assembly C

