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 79-21-49-300-002 Engine Pressure Oil Tubes - Weld Repair A Crack In The Wall, Repair-002 (VRS2909)
Effectivity
FIG/ITEM | PART NO. |
17-100 | 740-5767-507 |
17-100 | 740-5767-509 |
17-500 | 740-5769-511 |
18-100 | 740-5774-505 |
18-100 | 740-5774-507 |
General
This repair can be done on the pressure oil tube during overhaul.
If the tube 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 79-21-49-100-100.
Clean the area to be repaired.
SUBTASK 79-21-49-110-052 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 79-21-49-310-051 Repair the Crack
Use the Wire brush to remove unwanted materials caused by the repair.
Clean the repaired area.
SUBTASK 79-21-49-120-051 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 79-21-49-220-053 Examine the Repair
Refer to SPM TASK 70-31-02-310-501-001.
Do a dye penetrant test of the repair.
SUBTASK 79-21-49-230-051 Examine the Repair
Refer to SPM TASK 70-31-02-310-501-001.
Do the X-ray inspection of the repair.
SUBTASK 79-21-49-260-051 Examine the Repair
Refer to Testing-000 TASK 79-21-49-700-100.
Do a pressure test on the tube.
SUBTASK 79-21-49-780-052 Pressure Test the Tube
Refer to SPM TASK 70-09-00-400-501.
Put the repair scheme number VRS2909 on the tube adjacent to the repair area using the electro-etch method.
SUBTASK 79-21-49-850-052 Put the Repair Scheme Number on the Tube