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 75-24-49-300-039 LPT ACC Cooling Air Ducts - Replace The Tubes Of The Lower Duct Assembly, Repair-039 (VRS4399)
Material of component
PART IDENT | PART No. | MATERIAL |
Cooling Air Duct, assembly | 3A2410 | X10CrNi |
3A2659 | X10CrNi, Housing and tubes TiCu6-4, Tubes (optional) |
General
Price and availability - none.
The practices and processes referred to in the procedure by the TASK number are in the SPM.
NOTE
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Magnifying glass | LOCAL | Magnifying glass |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 03-204 WELDING FILLER WIRE | LOCAL | CoMat 03-204 |
Spares
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| TUBE - ASSEMBLY OF | 0AM53 | 3A2624 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2626 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2628 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2630 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2632 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2634 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2636 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2638 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2608 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2610 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2612 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2614 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2616 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2618 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2620 | 1 | |
| TUBE - ASSEMBLY OF | 0AM53 | 3A2622 | 1 |
Safety Requirements
NONEProcedure
Use a soft cloth only.
Clean the tube end.
SUBTASK 75-24-49-110-081 Clean the Back Tube End
Use 10x Magnifying glass.
Possible cracks cause decrease in weld strength.
Do the test for cracks.
SUBTASK 75-24-49-220-129 Examine the Parts for Cracks
Refer to SPM TASK 70-31-13-310-501.
Clean the surfaces to be welded.
SUBTASK 75-24-49-110-082 Clean the Surfaces to be Welded
Refer to Figure and Figure and SPM TASK 70-31-13-310-501.
For purity of welds, weld in a protective gas environment.
Use CoMat 03-204 WELDING FILLER WIRE as necessary.
Use applicable fixture.
No heat treatment required after weld repair.
Weld replacement tube into position, use tungsten inert gas method.
SUBTASK 75-24-49-310-063 Weld in the Replacement Tube
Refer to SPM TASK 70-31-13-310-501 for acceptance standards.
Examine the weld quality.
SUBTASK 75-24-49-220-130 Examine the Welds
Refer to SPM TASK 70-23-05-230-501.
Medium sensitivity.
No cracks permitted.
Do the test for cracks.
SUBTASK 75-24-49-230-112 Examine the Repaired Areas for Cracks
Figure: Lower Air Cool Duct, Assembly - Replacement Of Tubes
Lower Air Cool Duct, Assembly - Replacement Of Tubes
Lower Air Cool Duct, Assembly - Replacement Of Tubes
Lower Air Cool Duct, Assembly - Replacement Of Tubes
Figure: Lower Air Cool Duct, Assembly - Replacement Of Tubes
Lower Air Cool Duct, Assembly - Replacement Of Tubes
Lower Air Cool Duct, Assembly - Replacement Of Tubes
