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 75-24-49-300-023 LPT ACC Support Assemblies - Weld Repair the Rear Flange, Repair-023 (VRS4426)
General
Price and availability - none.
The practices and processes referred to in the procedure by the TASK number are in the SPP.
Before repair remove the screw thread inserts, refer to VRS4257 TASK 75-24-49-300-013.
After repair replace the screw thread inserts, refer to VRS4257 TASK 75-24-49-300-013.
NOTE
For more equipment and materials necessary to do this repair refer to SPP TASK 70-37-00-370-501
, SPP TASK 70-31-13-310-501
and SPP TASK 70-23-05-230-501.
Equivalent equipment may be used.
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
NONEConsumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 03-184 WELDING FILLER WIRE, NICKEL | LOCAL | CoMat 03-184 | ||
| CoMat 03-387 WELDING FILLER WIRE | LOCAL | CoMat 03-387 |
Spares
NONESafety Requirements
NONEProcedure
Refer to SPP TASK 70-31-13-310-501.
Clean the worn area to be welded.
SUBTASK 75-24-49-110-073 Clean the Support Assemblies
Refer to SPP TASK 70-31-13-310-501.
Prevent the support from distortion by overheating during the weld process.
Use an appropriate fixture.
Gas tungsten arc weld the worn area as required.
SUBTASK 75-24-49-310-057 Weld Repair the Support Assemblies
Refer to TASK 70-37-00-370-501.
Put the part in an oven for eight hours at 1450 to 1500 deg F (788 to 816 deg C).
Use argon or vacuum.
Cooling rate equivalent to air cooling.
Heat treat the support assembly.
SUBTASK 75-24-49-370-055 Heat Treatment after Weld Repair
Refer to SPP TASK 70-23-05-230-501.
Use medium sensitivity level.
No cracks are permitted.
Do the test for cracks.
SUBTASK 75-24-49-230-087 Examine the Welded Areas for Cracks
Figure: Repair Details and Dimensions
Repair Details and Dimensions
Repair Details and Dimensions
