(a)  
Permit more fluid to flow if there are bubbles in the system.

 NOTE: If the flow stops, hold the bypass lever to set the fuse
____ again in the up position for 2 seconds.
 S 436-008
 (7)  
Close the actuator bleed valve.

 S 866-009

 (8)  
Hold the manual bypass lever to set the fuse again in the up position for 2 seconds.

 S 846-010

 (9)  
Open the actuator bleed valve and let approximately 10 cubic inches of fluid out to set the fuse.

 S 436-011

 (10)
 Tighten the bleed valve and the lockwire.

 S 616-012

 (11)
 Examine the hydraulic reservoir level and fill it if it is necessary (AMM 12-12-01/301).

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 ALL  ú ú 01 Page 602 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 096-019
 WARNING:_______ YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
 DOOR LOCKS FROM THE LANDING GEAR DOORS.  THE DOORS CAN CLOSE
 QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY.  THIS

 CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (12)
 Do this task:  "Removal of the Door Locks from the Wing Landing Gear" (AMM 32-00-30/201).

 S 096-020

 (13)
 Do this task:  "Removal of the Door Locks from the Body Landing Gear" (AMM 32-00-30/201).

 S 866-014

 (14)
 Remove the hydraulic No. 1 power if it is necessary. (AMM 29-11-00/201).

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 ALL  ú ú 01 Page 603 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 BODY GEAR TRUCK POSITIONING PRESSURE REDUCING VALVE RAPID
_________________________________________________________ RESPONSE RELIEF VALVE - REMOVAL/INSTALLATION
____________________________________________
 1.  General
_______
 A.  This procedure contains two tasks:
 B.  The removal of the rapid response relief valve (referred to as the relief valve) for the pressure reducing valve.
 C.  The installation of the relief valve for the pressure reducing valve.
 TASK 32-13-25-004-001
 2.  Relief Valve Removal For The Pressure Reducing Valve (Fig. 401)
____________________________________________________
 A.  References
 (1)  
09-11-00/201, Towing

 (2)  
12-12-01/301, Hydraulic Systems

 (3)  
32-00-30/201, Landing Gear Door Locks

 (4)  
32-13-15/401, Body Gear Truck Positioning Actuator

 (5)  
IPC 32-13-16 Fig. 1

 B.  
Access

 (1)  
Location Zone
 755 Body Landing Gear, LH
 765 Body Landing Gear, RH

 C.  
Procedure

 S 864-024
 WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1) Install the ground locks in all landing gear (Ref 09-11-00/201).
 S 494-025
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  Do this task: "Installation of the Door Locks on the Wing Landing Gear" (Ref 32-00-30/201).
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 32-13-25
　
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