747-400 AMM 飞机维护手册 液压 HYDRAULIC 2(49)

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 (2) Release the pressure in the pneumatic system (AMM 36-00-00/201).
 S 862-096
 WARNING: MAKE SURE YOU RELEASE THE HYDRAULIC SYSTEM PRESSURE BEFORE YOU
_______ OPEN THE HYDRAULIC SYSTEM. HYDRAULIC FLUID THAT HAS PRESSURE CAN CAUSE INJURY TO PERSONS.
 (3)
Release the pressure in the hydraulic system (AMM 29-11-00/201).

 S 022-097

 (4)  
Remove the disconnect for ground service:

 (a)  
Remove the disconnect from the pressure module. 1) Discard the packing and the backup ring.

 (b)  
Install a cap on the open port to keep contamination out.

 TASK 29-11-23-402-099
 13. Ground Service Disconnect Installation (Fig. 201)
______________________________________
 A. Consumable Materials
 (1)  
D00153 Fluid-Hydraulic, Fire Resistant, BMS 3-11

 B.
References

 (1)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (2)  
AMM 54-62-00/201, Nacelle Strut Access Panels

 (3)  
IPC 29-11-23 Fig. 1

 C.
Access

 (1)  
Location Zone
 454 System 1 - Strut Aft Fairing
 464 System 2 - Strut Aft Fairing
 474 System 3 - Strut Aft Fairing
 484 System 4 - Strut Aft Fairing

 

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (2)  
Access Panel
 454AL Right Trailing Edge Fairing Door - System 1
 464AL Right Trailing Edge Fairing Door - System 2
 474AL Right Trailing Edge Fairing Door - System 3
 484AL Right Trailing Edge Fairing Door - System 4

 D.  
Procedure

 S 642-100
 (1)  
Lubricate the packing, the backup ring, and the component threads with hydraulic fluid.

 S 422-101

 (2)  
Install the disconnect for ground service:

 (a)  
Remove the cap from the port.

 (b)  
Install the backup ring and the packing on the disconnect.

 (c)  
Install the disconnect in the pressure module.

 1)  On the pressure module of the Sterer type, Tighten the disconnect to 1440-1760 pound-inches (160-200 N.m).
 2)  On the pressure module of the Ronson/Hydraulic type, Tighten the disconnect to 450-550 pound-inches (50-62 N.m).
 S 862-103
 (3)  
Pressurize the hydraulic system with a ground cart
 (AMM 29-11-00/201).

 S 792-115

 (4)  
Examine the disconnect for leakage.

 (a)  
If you find leakage, repair the cause of the leak.

 S 862-104
 (5)  Release the pressure in the hydraulic system if it is not necessary (AMM 29-11-00/201).
 S 412-106
 CAUTION: MAKE SURE YOU LATCH THE DOORS ON THE TRAILING EDGE FAIRING
_______ CORRECTLY. IF THE DOORS OPEN DURING A FLIGHT, THIS CAN CAUSE DAMAGE TO THE DOORS.
 (6)  Close the right door on the applicable trailing edge fairing (AMM 54-62-00/201).
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 ALL  ú ú 02 Page 219 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 ELECTRICAL COMPONENT ASSEMBLY - REMOVAL/INSTALLATION
____________________________________________________
 1.  General_______
 A.  This procedure contains the tasks to remove and install the electrical component assembly. The installation task contains a test of the assembly installation.
 B.  The electrical component assembly is on the upper left side of the turbine drive for the air-driven pump. You can get access to the assembly through the left fairing door on the trailing edge of the strut.
 TASK 29-11-25-004-001
 2.  Electrical Component Assembly Removal (Fig. 401)_____________________________________
 A.  References
　
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