S 495-028

 (5)  
Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).

 S 845-029

 (6)  
Supply electrical power (AMM 24-22-00/201).

 E.
Procedure

 S 865-012
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  
Pressurize hydraulic systems 1, 2, and 4 (AMM 29-11-00/201).

 S 785-013

 (2)  
Do a check of the hydraulic pressure indication as follows:

 (a)  
Make sure the PRESS lights for hydraulic systems 1, 2, and 4, on the Pilot's Overhead Panel, P5, are off.

 (b)  
Make sure the BRAKE SOURCE light on the Captain's Main Instrument Panel, P1, is off.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-41-06
 ALL  ú ú 01 Page 502 ú Oct 10/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (c)  Make sure these pressure indications are the same (|100 psi):
 1) The pressure indication of the HYD BRAKE PRESS gage, on the P1 panel 2) The pressure indication for hydraulic system 4 on the EICAS hydraulic synoptic display (AMM 31-61-00/001).
 S 715-031
 (3)  Quickly push one set of brake pedals to the limit of travel and monitor these indications:
 NOTE: If you cannot monitor all indications during one cycle of
____ brake operation, monitor one indication during each of three cycles.
 (a)  
Make sure the pressure indication of the HYD BRAKE PRESS gage, on the P1 panel, momentarily decreases.

 (b)  
Make sure the pressure indication for hydraulic system 4 on the EICAS hydraulic synoptic display monemtarily decreases.

 (c)  
Make sure the pressure indication for hydraulic system 1 and 2 on the EICAS hydraulic synoptic display does not change.

 S 715-032
 (4)  
Release the brake pedals.

 S 865-009

 (5)  
Remove the power from hydraulic system 4 (AMM 29-11-00/201).

 S 865-033
 WARNING: MOVE ALL PERSONS AND EQUIPMENT AWAY FROM THE ELEVATORS BEFORE
_______ YOU MOVE THE CONTROL COLUMN. THE ELEVATORS CAN MOVE QUICKLY AND CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (6)  Operate the elevators to decrease the pressure of hydraulic system 4 to less than 160 psi.
 NOTE: Use the EICAS hydraulic synoptic display for an indication
____
 of the pressure in hydraulic system 4.

 S 785-016
 (7)  
Do a check of the hydraulic pressure indication as follows:

 (a)  
Make sure the HYD BRAKE PRESS gage, on the P1 panel,
 shows 3000 |100 psi.

 (b)  
Make sure the pressure indication for hydraulic system 1 and 2 on the EICAS hydraulic synoptic display is 3000 |100 psi.

 (c)  
Make sure the PRESS light for hydraulic system 4, on the P5 panel, is on.

 (d)  
Make sure the PRESS lights for hydraulic systems 1 and 2, on the P5 panel, are off.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-41-06
 ALL  ú ú 02 Page 503 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (e)  Make sure the BRAKE SOURCE light, on the P1 panel, is off.
 S 715-035
 (8)  Quickly push one set of brake pedals to the limit of travel and monitor these indications:
 NOTE: If you cannot monitor all indications during one cycle of
____ brake operation, monitor one indication during each of three cycles.
 (a)  
Make sure the pressure indication of the HYD BRAKE PRESS gage, on the P1 panel, does not change.
　
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 起落架 LANDING GEAR 6(68)