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 73-22-48-300-007 P2/T2 Sensor Air Tube - Repair The End Fittings, Repair-007
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 the Standard Practices/Processes Manual (SPM).
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Smooth flat file | LOCAL | Smooth flat file | ||
| Thread tap | LOCAL | Thread tap | 0.4375-20 UNJF-3B | |
| Thread gage | LOCAL | Thread gage | (A GO - NO GO gage to test the size of thread on the thread tap) |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 01-002 SOLVENT, DELETED. | 0AM53 | CoMat 01-002 | ||
| CoMat 02-099 LINT-FREE CLOTH | LOCAL | CoMat 02-099 | ||
| CoMat 02-102 BRUSH, PAINT | LOCAL | CoMat 02-102 | ||
| CoMat 10-035 COMPOUND, METAL CUTTING,WATER-TYPE | 0AM53 | CoMat 10-035 |
Spares
NONESafety Requirements
NONEProcedure
Refer to Cleaning-000 TASK 73-22-48-100-100.
Clean the end fittings.
SUBTASK 73-22-48-110-052 Clean the End Fittings
If more than three turns of the screw threads are damaged, then discard the tube assy.

CAUTION
DO NOT DAMAGE THE SEALING FACES OF THE END FITTINGS. IT CAN MAKE THE TUBE UNSERVICEABLE.Visually examine the screw threads.
Use the Thread tap and the CoMat 10-035 COMPOUND, METAL CUTTING,WATER-TYPE metal cutting compound.
If theThread tap does not turn easily, discard the tube assy.
Repair the screw threads.
Use the Thread gage 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 tube assy.
Make sure that the dimensions of the screw threads are correct.
SUBTASK 73-22-48-350-051 Repair the Screw Threads
Use the smooth flat file to remove all burrs and scratches.
Make the wrench flats flat and smooth.
The distance must be between 0.565 in. (14.37 mm) and 0.558 in. (14.18 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 73-22-48-350-052 Repair the Wrench Flats
Refer to Inspection-001 TASK 73-22-48-200-101.
Visually examine the end fitting.
SUBTASK 73-22-48-220-055 Examine the End Fitting
Refer to the SPM TASK 70-23-05-230-501.
Do a dye-penetrant test on the end fitting.
SUBTASK 73-22-48-230-052 Examine the End Fitting
Refer to TASK 73-22-48-700-001.
Do a pressure test on the tube.
SUBTASK 73-22-48-780-053 Pressure Test the Tube
Refer to the SPM TASK 70-09-00-400-501.
Mark the repair scheme number VRS2942 on the tube adjacent to the part number with the electro-etch method.
SUBTASK 73-22-48-850-051 Put the Repair Scheme Number on the Tube
