(c)
All gearbox, angle gearbox, and lay shaft connections.
(d)
All gearbox housing covers and fittings.
(e)
All oil supply lines from the oil pump to the bearing
compartments.
S 795-236-N00
(6)
Connect the hose to each oil seal drain on the overboard drain collector (starter drive, EEC alternator drive, IDG drive, fuel pump drive, hydraulic pump drive) (Fig. 504, View B).
S 795-141-N00
(7)
Put the free ends of the hose into the pint bottle of water.
(a) Leakage that causes steady air bubbles in the water are not permitted.
NOTE: You can have some air bubbles that slowly come into
____
view.
S 095-066-N00
(8) Remove the air pressure from the main gearbox.
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
TEST NO. 5 - OIL SYSTEM STATIC LEAK TEST
________________________________________ S 365-067-N00
CAUTION:_______ DO NOT INSTALL A PLUG OR CAP ON THE OVERBOARD SEAL DRAINS TO
CORRECT THE LEAKAGE WHICH IS MORE THAN THE LIMITS. IF YOU
INSTALL A PLUG OR CAP, THE LEAKAGE WILL COLLECT IN THE SEAL
DRAIN SPACE. THIS CAN CAUSE MORE SEAL FAILURE AND
CONTAMINATION OF THE OIL SYSTEM AND COMPONENTS. IT CAN ALSO
LET OUT A FLAMMABLE FLUID OR A FLUID THAT CAUSES CORROSION IN
THE COWLING.
(9)
Repair the leaks as it is necessary. S 715-135-N00
(10)
Do the test again if leaks were found and repaired. S 085-068-N00
(11)
Remove the air pressure from the deaerator. S 085-069-N00
(12)
Remove the adapter and the air source line. S 085-070-N00
(13)
Remove the PWA adapter from the deoiler outlet tube. S 035-148-N00
(14)
Install the plug to the breather pressure port. S 615-071-N00
(15)
Fill the oil tank, if the oil system was drained (AMM 12-13-03/301).
S 865-136-N00
WARNING:_______USE AMM 71-00-00/201 TO OPERATE THE POWER PLANT. IF YOU DO NOT USE THIS PROCEDURE, YOU CAN CAUSE DAMAGE TO EQUIPMENT OR INJURY TO PERSONS.
(16)
Use the Power Plant Dry-Motor procedure to motor the engine for 3 minutes (AMM 71-00-00/201).
S 615-073-N00
(17)
Fill the oil tank if it is necessary (AMM 12-13-03/301).
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TEST NO. 5 - OIL SYSTEM STATIC LEAK TEST
________________________________________
S 415-137-N00 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU CLOSE THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(18)
Close the thrust reversers (AMM 78-31-00/201). S 415-138-N00
(19)
Close the core cowl panels (AMM 71-11-06/201). S 415-139-N00
(20)
Close the fan cowl panels (AMM 71-11-04/201). S 445-140-N00
(21)
Do the activation procedure for the thrust reversers (AMM 78-31-00/201).
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
TEST NO. 6 - EEC IDLE TEST
__________________________
TASK 71-00-00-705-029-N00
8. Test No. 6 - EEC Idle Test__________________________
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