E.
Procedure

 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 866-059
 S 496-060
 WARNING: REFER TO AMM 32-00-30/201 FOR THE INSTALLATION PROCEDURE FOR
_______ LOCKS ON THE LANDING-GEAR DOORS. SUDDEN MOVEMENT OF THE DOORS CAN CAUSE INJURY AND DAMAGE.
 (2)  Make sure that the locks for the landing gear doors and the landing gears are installed (AMM 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 29-11-00
 ALL  ú ú 06 Page 632 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 866-061
 (3)  Make sure that the person in the flight compartment can speak with the person on the ground.
 S 016-486
 (4)  Open the doors in the trailing edge fairing for engines No. 2 and No. 4 (AMM 54-62-00/201).
 S 486-062
 (5)  If a hydraulic service cart is used as the pressure source, connect the hydraulic service cart (AMM 29-11-00/201): (a) Connect the cart to the No. 2 and No. 4 hydraulic systems. (b) Install a flow meter in the pressure line between the cart and the system No. 2 ground-service disconnect on the pressure module.
 (c)  Connect the return line on the hydraulic service cart to the No. 2 and No. 4 return modules.

 S 486-063
 (6)  
If the system demand pump is used as a pressure source, release the pressure in hydraulic system No. 2 (AMM 29-11-00/201).

 (a)  
Install a flowmeter in the pressure line of the No. 2 demand pump between the pump and the ground-service disconnect on the pressure module.

 (b)  
Make sure there is a minimum of 5400 pounds (2450 kg) of fuel in the No. 2 main fuel tank and 2000 pounds (900 kg) of fuel in the No. 4 main fuel tank.

 NOTE: The fuel weight values are calculated with a fuel
____ density of 6.7 pounds per gallon.
 S 866-667
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER.
 (7)  
Make sure that the inboard and outboard trailing edge flaps are fully retracted.

 (a)  
If it is necessary, do this task: "Trailing Edge Flaps Retraction with Electrical Power" (AMM 27-51-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 29-11-00
 ALL  ú ú 01 Page 633 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 866-065
 (8)  
Put the ALTN FLAPS ARM switch on the P2 first officer's panel in the off position.

 S 866-067

 (9)  
Put the system No. 2 STAB TRIM switch on the center aisle stand in the ON position.

 S 866-068

 (10)
 Put the LOWER YAW DAMPER switch on the P5 overhead panel in the INOP position.

 S 866-069

 (11)
 Put the A/P ENGAGE switches (L, C, and R) on the control panel for the AFCS mode in the off position.

 S 866-070

 (12)
 Put the system No. 2 WING FLT CONTROL SHUTOFF switch on the P461 overhead maintenance panel in the ON position.

 S 866-071

 (13)
 Put the system No. 2 TAIL FLT CONTROL SHUTOFF switch on the P461 overhead maintenance panel in the ON position.

 S 866-072

 (14)
 Make sure that the selector handle for the landing gear on the P2 first officer's panel is in the OFF position.

 S 866-073

 (15)
 Put the system No. 2 HYD PUMPS ENG switch on the P5 overhead maintenance panel in the ON position.

 F.
Hydraulic System No. 2 - Total System Internal Leakage Check

 S 866-074
 (1)  Pressurize hydraulic systems No. 2 and No. 4 to 3000 psig.
 S 866-668
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER.
　
中國航空網(wǎng) www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 液壓 HYDRAULIC 1(58)