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 71-00-00-700-004 Test No. 4 - Oil System Static Leak Check, Testing-004
General
You can use this test to do a check of the gearbox for leaks. You will not have to operate the engine.
NOTE
NOTE
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Hoses | LOCAL | Hoses | A short piece of hose with a 0.500 in. (12.70 mm) inside diameter by 2 ft (0.62 m) long. | |
| Connectors | LOCAL | Connectors | ||
| IAE 1P16205 Adapter | 0AM53 | IAE 1P16205 | 1 |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 10-045 LEAK CHECK FLUID, BUBBLES-TYPE | 03530 | CoMat 10-045 |
Spares
NONESafety Requirements
NONEProcedure
Do the necessary steps by the instructions in Pre-Rig the Engine for Testing. Refer to TASK 71-00-00-700-020.
Remove the seal from the end of the breather outlet pipe.
Install IAE 1P16205 Adapter 1 off on the end of the breather outlet pipe and secure with the bolts and nuts.
Connect an air hose to the larger adapter.
Connect a gage to the smaller adapter.
The temperature of the air supplied must be less than 325 deg F (160 deg C).
Do not hold more than 10 psig (68.9 kPa) maximum at the gearbox.
Supply and hold 7 psig (48.3 kPa) of air pressure at the gearbox.
All of the areas on the gearbox and the angle gearbox where there are bolt on accessories, joints, and tube connections.
Apply CoMat 10-045 LEAK CHECK FLUID, BUBBLES-TYPE or a soap and water solution at these locations.
Repair all leaks that you find.
Disconnect the lines one at a time at the four locations.
Disconnect the lines at the gearbox end or at the drain mast end.
If necessary, disconnect the seal drain lines for the hydraulic pump, starter, integrated drive generator and fuel pump.
Connect Hoses 1 off to each of the seal drains. Put the hose over the Connectors.
There can be some leakage (bubbles). If it is possible to count the number of slowly made bubbles, the leakage is satisfactory.
A seal which has leaks (bubbles) which are fast and sufficient to move the water is not satisfactory.
Put the open end of the flexible hose in the small bottle of water and look for bubbles.
Turn off the air pressure supply to the gearbox.
Repair the leaks and test again, as necessary.
Install all of the seal drain parts which were removed and connect all of the lines which were disconnected.
Remove the adapter.
Do the necessary steps by the instructions in De-Rig the Engine after Testing. Refer to TASK 71-00-00-700-021.
Idle System Static Leak Check