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 71-71-48-300-005 Fuel Drain Tubes - Repair The End Fittings, Repair-005 (VRS2937)
Effectivity
FIG/ITEM | PART NO. |
|---|---|
01-100 | 740-5790-503 |
01-100 | 740-5790-505 |
01-100 | 740-5790-507 |
01-500 | 740-5791-503 |
01-500 | 740-5791-505 |
02-100 | 740-5261-503 |
02-100 | 740-5261-505 |
02-100 | 740-5261-507 |
02-500 | 740-5700-501 |
02-500 | 740-5700-505 |
02-500 | 740-5700-507 |
02-500 | 745-5700-503 |
03-100 | 740-5702-505 |
03-100 | 740-5702-507 |
03-100 | 740-5702-509 |
03-400 | 740-5688-509 |
03-400 | 740-5688-511 |
03-400 | 740-5688-513 |
03-400 | 745-5688-501 |
03-700 | 740-5692-503 |
03-700 | 740-5692-505 |
03-700 | 740-5692-507 |
General
This repair can be done on the end fittings of the tube during overhaul.
The practices and processes referred to in the procedure by the TASK numbers are in SPM.
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Smooth flat file | LOCAL | |||
| Thread tap | LOCAL | 0.5000-20 UNJF-3B | ||
| Die | LOCAL | 0.4970-20 UNJF-3A | ||
| Thread gage | LOCAL | (A GO - NO GO gage to test the size of thread on the thread taps/dies listed above) |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 10-035 COMPOUND, METAL CUTTING,WATER-TYPE | LOCAL | CoMat 10-035 |
Spares
NONESafety Requirements
NONEProcedure
Refer to Cleaning-000 TASK 71-71-48-100-100.
Clean the end fittings.
SUBTASK 71-71-48-110-052 Clean the End Fittings
If more than three turns of the screw threads are damaged, then discard the end fitting.
Visually examine the screw threads.
Use the Thread tap and the CoMat 10-035 COMPOUND, METAL CUTTING,WATER-TYPE.
If the thread tap does not turn easily, discard the end fitting.
Repair the screw threads.
Use the Die to measure the size of the threads.
The GO end of the gage must go in the end fitting.
The NO-GO end of the gage must not go in the end fitting.
If the NO-GO end goes in, discard the end fitting.
Make sure that the dimensions of the screw threads are correct.
SUBTASK 71-71-49-350-053 Repair the Screw Threads
CAUTION
DO NOT DAMAGE THE SEALING FACES OF THE END FITTINGS. IT CAN MAKE THE TUBE UNSERVICEABLE.Use the Smooth flat file to remove all burrs and scratches.
Make the wrench flats flat and smooth.
The distance must be between 0.687 in. (17.45 mm) and 0.683 in. (17.35 mm).
For an adapter the distance must be between 0.625 in. (15.88 mm) and 0.621 in. (15.77 mm).
Each pair of flats must be parallel to each other.
If the distance is not correct or the flats are not parallel, discard the end fitting.
Measure the distance across the flats at each of three positions.
Do again Step
Clean the end fitting.
SUBTASK 71-71-48-350-054 Repair the Wrench Flats
Refer to TASK TASK 71-71-49-200-100.
Visually examine the end fitting.
SUBTASK 71-71-48-210-052 Examine the End Fitting
Refer to SPM TASK 70-23-05-230-501.
Do a dye-penetrant test on the end fitting.
SUBTASK 71-71-48-230-001 Examine the End Fitting
Refer to Testing-001 TASK 71-71-49-700-101.
Do a pressure test on the tube.
SUBTASK 71-71-48-780-053 Pressure Test the Tube
Refer to SPM TASK 70-09-00-400-501.
Mark the repair scheme number VRS2937 on the tube adjacent to the part number with the electro-etch method.
SUBTASK 71-71-48-350-055 Put the Repair Scheme Number on the Tube