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 72-61-49-700-101 Gearbox Breather Outlet Oil Duct - Do A Pressure Test, Testing-001
General
Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service-bulletin alpha-variants refer to the IPC.
The duct must be cleaned and inspected before this pressure test, Refer to Cleaning-000 TASK 72-61-49-100-100 and Inspection-000 TASK 72-61-49-200-100.
Special tools are identified in the procedure by the tool primary number.
The Test Equipment Specification
To do the test on the duct use equipment equivalent to that shown in Figure.
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| IAE 1N20428 Blanking adapter | 0AM53 | IAE 1N20428 | 1 off | |
| IAE 1N20429 Pressurizing adapter | 0AM53 | IAE 1N20429 | 1 off |
Consumables, Materials and Expendables
NONESpares
NONESafety Requirements
NONEProcedure
Install the IAE 1N20429 Pressurizing adapter 1 off and the neoprene rubber disc to the duct (01-100). Safety the components with 0.250 in. bolts, washers and nuts.
Install the IAE 1N20428 Blanking adapter 1 off and the 206-620 dowty seal 1off to the duct (01-100). Safety the components with 0.250 in. bolts, washers and nuts.
SUBTASK 72-61-49-780-051 Prepare the Duct (01-100) for the Pneumatic Pressure Test.
Connect the duct to the outlet of the pneumatic pressure testing rig.
Put a pressure of 14.5 psi (100 kPa) in the duct.
Put the duct in the water tank.
Let the pressure stay in the duct for 1 minute.
Make sure that the duct has no leaks. If the duct has leaks, reject the duct. Refer to Inspection-000 TASK 72-61-49-200-100.
Decrease the pressure in the duct to zero.
Disconnect the duct from the outlet of the pneumatic pressure testing rig.
Remove the adapter from the duct.
SUBTASK 72-61-49-780-052 Do the Pneumatic Pressure Test on the Duct.
Figure: Pneumatic Pressure Testing Rig
Pneumatic Pressure Testing Rig
