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 72-44-50-300-008 HPT Stage 1 Cooling (TOBI) Duct Deflector - Weld Repair Damage, Repair-008 (VRS3267)
General
The practices and processes referred to in this procedure by the TASK number are in the SPM.
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Portablegrinding equipment | LOCAL | Portable grinding equipment | ||
| Workshop inspection equipment | LOCAL | Workshop inspection equipment |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 02-263 GRINDING WHEEL | LOCAL | CoMat 02-263 | ||
| CoMat 03-284 WELDING FILLER WIRE, NiBASE | LOCAL | CoMat 03-284 |
Spares
NONESafety Requirements
NONEProcedure
Refer to TASK 72-44-50-100-000 (CLEANING-000).
Clean the deflector.
SUBTASK 72-44-50-110-055 Clean the HPT Cooling Duct Deflector
Use a CoMat 02-263 GRINDING WHEEL or equivalent to clean areas to be welded.
Surface clean all nicks, scratches, dents, and erosion, and areas where you routed out cracks.
SUBTASK 72-44-50-350-067 Remove Damage in Welds and in the Sheet Metal before Weld Repair
Use CoMat 03-284 WELDING FILLER WIRE, NiBASE and the manual gas tungsten (GTAW-MA) method.
Refer to the SPM TASK 70-31-02-310-501-001.
Weld to repair the cracks you routed out, nicks, scratches, dents, and erosion in the deflector.
SUBTASK 72-44-50-310-051 Weld to Repair Damage in the HPT Cooling Duct Deflector
Refer to the SPM TASK 70-26-01-260-501.
NOTE
X-ray inspection is the recommended method for the inspection of cracks in the HPT cooling duct deflector. If you cannot do X-ray inspection, you can do one of the fluorescent penetrant inspections that follow.X-ray inspect the deflector for stress cracks in the weld and in the sheet metal that is adjacent to the weld area. No cracks are permitted.
SUBTASK 72-44-50-260-051 X-Ray Inspect the HPT Cooling Duct Deflector
Refer to the SPM TASK 70-23-01-230-501, SPM TASK 70-23-02-230-501 or SPM TASK 70-23-05-230-501.
Fluorescent penetrant inspect the deflector for stress cracks in the weld and in the sheet metal that is adjacent to the weld area. No cracks are permitted.
SUBTASK 72-44-50-230-066 Fluorescent Penetrant Inspect the HPT Cooling Duct Deflector
Refer to the SPM TASK 70-37-01-370-501.
Stress relieve the deflector after welding.
SUBTASK 72-44-50-370-051 Stress Relieve the HPT Cooling Duct Deflector
Refer to the SPM TASK 70-23-01-230-501, SPM TASK 70-23-02-230-501 or SPM TASK 70-23-05-230-501.
Fluorescent penetrant inspect the deflector for stress cracks in the weld and in the sheet metal that is adjacent to the weld area. No cracks are permitted.
SUBTASK 72-44-50-230-067 Fluorescent Penetrant Inspect the HPT Cooling Duct Deflector After Stress Relief
Refer to Figure.
Refer to TASK 72-44-50-200-002 (INSPECTION-002, CONFIG-001) and maintain the dimensions given in the figure.
Do a dimension and visual inspection of the deflector after repair.
SUBTASK 72-44-50-220-076 Examine the HPT Cooling Duct Deflector After Repair
Figure: Repair Details and Dimensions
Repair Details and Dimensions
