(2)
Access Panel 415 Left Thrust Reverser Half - Engine 1 425 Left Thrust Reverser Half - Engine 2 435 Left Thrust Reverser Half - Engine 3 445 Left Thrust Reverser Half - Engine 4
Oil Pressure Indicating System Test Schematic
Figure 503
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
D. Preconditions
S 865-029-N00
(1)
These conditions are necessary for this task:
(a)
Electric power on (AMM 24-22-00/201).
(b)
Engine Indicating and Crew Alert System (EICAS), serviceable (AMM 31-61-00/201).
E.
Prepare to Do a Test of the Indicating System for the Oil Pressure
S 865-004-N00
(1)
Supply electrical power (AMM 24-22-00/201).
S 865-005-N00
(2)
Make sure these circuit breakers that follow are closed:
(a)
P6 Main Power Distribution Panel
1) 6D1 OIL PRESS ENG 1
2) 6D2 OIL PRESS ENG 2
3) 6D3 OIL PRESS ENG 3
4) 6D4 OIL PRESS ENG 4
(b)
P7 Overhead Circuit Breaker Panel
1) 7F9 EIU L
2) 7F10 EIU C
3) 7F15 EIU R
S 015-018-N00
(3) Open the left fan cowl panel (AMM 71-11-04/201).
S 045-023-N00
WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______
OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF
THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO
EQUIPMENT.
(4)
Do this procedure: Thrust Reverser Deactivation for Ground
Maintenance (AMM 78-31-00/201).
(5)
Open the left core cowl panel (AMM 71-11-06/201).
S 015-019-N00
S 015-024-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN THE
_______
THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS,
INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(6) Open the left thrust reverser (AMM 78-31-00/201).
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F. Do a Test of the Indicating System for the Oil Pressure
S 035-007-N00
(1)
Disconnect the oil pressure tube from the oil pressure transmitter.
S 485-008-N00
(2)
Connect the line from the air pressure source to the oil pressure transmitter.
S 735-009-N00
(3)
Apply a pressure of 100 |1.0 psi (667 |7 kPa) to the oil pressure transmitter.
S 735-010-N00
(4)
Make sure the oil pressure indication on the auxiliary EICAS display shows 100 |9 psi.
S 735-011-N00
(5)
Decrease the pressure to 60 |1.0 psi (400 |7 kPa).
S 735-012-N00
(6)
Make sure the oil pressure indication on the auxiliary EICAS display shows 60 |9 psi.
S 735-013-N00
(7)
Decrease the pressure at the oil pressure transmitter to zero.
S 085-014-N00
(8)
Disconnect the line for the air pressure source from the oil pressure transmitter.
S 435-015-N00
(9)
Connect the oil pressure tube to the oil pressure transmitter.
(a) Tighten the tube nut.
G.
Put the Airplane Back to Its Usual Condition.
S 415-025-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.
(1)
Close the left thrust reverser (AMM 78-31-00/201).
(2)
Close the left core cowl panel (AMM 71-11-06/201).
(3) 中國航空網 m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：747-400 AMM 飛機維護手冊 滑油 OIL(114)
