(d)  
The spoilers are retracted.

 (e)  
Hydraulic power removed (AMM 29-11-00/201).

 NOTE: You can supply power to the hydraulic system
____ for servicing but the quantity can change when hydraulic system power is removed.
 (f)  Parking brake released with wheel chocks installed (AMM 10-11-01/201).
 NOTE: You can set the parking brake for servicing but
____ the reservoir quantity can change when the parking brake is released.
 S 213-117
 WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (3)  Make sure the ground lockpins for the landing gear are installed (AMM 09-11-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 12-12-01
 ALL  ú ú 04 Page 303 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 213-005
 (4)  When you do the servicing on the system No. 4 reservoir, do a check
 of the brake accumulator to make sure it has the correct precharge
 pressure (AMM 12-15-09/301).
 S 863-115
 (5)  Pressurize the hydraulic reservoir (AMM 29-11-00/201).
 NOTE:____ You can remove the pressure from the hydraulic reservoir
 for easier servicing but the quantity can change when the
 reservoir does not have pressure.

 S 863-064
 WARNING: DO NOT GET THE HYDRAULIC FLUID IN YOUR MOUTH OR EYES, OR ON
_______ YOUR SKIN. YOU CAN ABSORB POISONOUS MATERIALS FROM THE FLUID THROUGH YOUR SKIN. IF YOU GET THE FLUID IN YOUR EYES OR YOUR MOUTH, INTERNAL INJURY CAN OCCUR.
 CAUTION: TO PREVENT CONTAMINATION OF THE HYDRAULIC SYSTEM, USE CLEAN
_______ EQUIPMENT WHEN YOU DO THE SERVICING OF THE HYDRAULIC RESERVOIRS. DAMAGE TO THE AIRPLANE HYDRAULIC SYSTEM CAN OCCUR.
 (6)  Put the end of the filler hose in the container of hydraulic fluid.
 NOTE: All currently qualified BMS 3-11, Type IV hydraulic
____ fluids are interchangeable and intermixable in any proportion.
 S 863-046
 (7)  Put the pump handle in the hand pump socket.
 S 613-140
 WARNING: CARE SHOULD BE TAKEN NOT TO OVERFILL THE HYDRAULIC RESERVOIR.
_______ OVERFILL CAN CAUSE HYDRAULIC FLUID TO ENTER THE PNEUMATIC DUCTING AND THE AIR CONDITIONING PACKS RESULTING IN SMOKE AND NOXIOUS FUMES ENTERING THE FLIGHT DECK AND PASSENGER CABIN. REPEATING HYDRAULIC CONTAMINATION OF THE PNEUMATIC SYSTEM CAN ALSO RESULT IN DAMAGE TO TITANIUM DUCTS.
 (8)  Do the steps that follow for each reservoir that you must fill:
 (a)  Turn the selector valve handle to the number of the hydraulic system which you will fill.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 12-12-01
 ALL  ú ú 01 Page 304 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 CAUTION: DO NOT OPERATE THE HAND PUMP MORE THAN 100 CYCLES EACH
_______ MINUTE. DAMAGE TO THE HYDRAULIC RESERVOIR CAN OCCUR.
 (b)  Operate the hand pump.
 NOTE: The hand pump can become dry and not operate
____ correctly when you do not use it for a long time.
 1)  If the pump does not move fluid, put the hose to the pump inlet and put hydraulic fluid into the hose.
 NOTE:____This will fill the pump with fluid. This will make the pump operate correctly and prevent pump removals that are not necessary.
 (c)  Fill the reservoir to the full level as follows:
 1)  While you fill the reservoir, monitor the hydraulic quantity on one of the items which follow: a) The hydraulic quantity indicator in the wheel well. b) The hydraulic page of the EICAS which shows the
 hydraulic quantity. 2) Stop when the reservoir fill indicator is in the green band or when the EICAS display shows .80 to 1.10.
 3)  Make sure the OF, RF, or LO indication does not show on the EICAS maintenance page adjacent to the HYD QTY (1, 2, 3, 4).
 S 863-039
 (9)  
Do the steps which follow to operate the flight controls, if one of these conditions occur:
　
中國航空網 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 SERVICING 1(36)