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 72-61-49-300-003 Gearbox Breather Outlet Oil Duct - Weld Repair A Crack, Repair-003 (VRS2894)
General
This repair can be done on the gearbox breather duct during overhaul.
If the duct has been repaired before, do not carry out this repair.
Price and availability - none.
Related repairs - none.
The practices and processes referred to in the procedure by the TASK numbers are in the (SPM).
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Argon-arc welding equipment | LOCAL | Argon-arc welding equipment | ||
| Wire brush | LOCAL | Wire brush | (stainless steel) |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 01-076 METHYL ETHYL KETONE | LOCAL | CoMat 01-076 | ||
| CoMat 02-099 LINT-FREE CLOTH | LOCAL | CoMat 02-099 | ||
| CoMat 03-204 WELDING FILLER WIRE | LOCAL | CoMat 03-204 |
Spares
NONESafety Requirements
NONEProcedure
Refer to Cleaning-000 TASK 72-61-49-100-100.
Clean the area to be repaired.
SUBTASK 72-61-49-110-053 Clean the Repair Area
Refer to SPM TASK 70-31-02-310-501-001.
Make sure that the weld-bead is symmetrical along the full length of the crack.
The welding data is as follows:
Type - Argon-arc D.C. Torch - B.O.C. W200 or an equivalent
Electrode - 2% ceriated tungsten with a 0.0625 in. (1.59 mm) diameter
Weld the crack.
SUBTASK 72-61-49-310-051 Repair the Crack
Use the Wire brush to remove the unwanted materials caused by the repair.
Clean the repaired area.
SUBTASK 72-61-49-120-051 Clean the Repaired Area
Refer to SPM TASK 70-31-02-310-501-001.
Make sure that the weld is complete along the length of the crack.
Examine the repair weld.
SUBTASK 72-61-49-220-051 Examine the Repair
Refer to SPM TASK 70-31-02-310-501-001.
Do a dye penetrant test of the repair.
SUBTASK 72-61-49-230-052 Examine the Repair
Refer to SPM TASK 70-31-02-310-501-001.
Do the X-ray inspection of the repair.
SUBTASK 72-61-49-260-051 Examine the Repair
Refer to the Testing-000 TASK 72-61-49-700-100.
Do a pressure test on the duct.
SUBTASK 72-61-49-780-054 Pressure Test the Duct
Refer to SPM TASK 70-09-00-400-501.
Put the repair scheme number VRS2894 on the duct adjacent to the repair area using the electro-etch method.
SUBTASK 72-61-49-850-052 Put the Repair Scheme Number on the Tube