(b)  
Install the lockwires through the bolt heads.

 (c)  
Connect the link (11) to the valve (2) with the bolt (10).

 (d)  
Tighten the nut on the bolt (10) to 50-70 pound-inches.

 (e)  
Put the valve assembly in its position.

 (f)  
Push the roller (12) against the striker arm (4) until the mounting holes in the valve and the structure align.

 NOTE: You can remove the striker arm plates (6) to help align
____ the mounting holes. Install the plates after you install the valve.
 (g)  
Install the attach bolts (1 and 3).

 (h)  
Remove the caps and plugs from the hydraulic hoses.

 (i)  
Connect the hydraulic hoses to the valve.

 S 824-008
 (3)  
Adjust the sequence valve:

 (a)  
Install the rigging pin through the holes in the clevis (9) and the link (11).

 (b)  
Add or remove striker arm plates (9) to permit the easy installation and removal of the rigging pin.

 CAUTION:_______MAKE SURE YOU REMOVE THE RIGGING PIN. FAILURE TO REMOVE THE RIGGING PIN WILL CAUSE DAMAGE TO THE MECHANISM IF THE DOOR OPERATES.

 (c)  
Remove the rigging pin.

 S 094-009
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASKS 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.
 (4)  
Do this task: "Wing Landing Gear Door Lock Removal" (Ref 32-00-30/201).

 S 094-039

 (5)  
Do this task: "Body Landing Gear Door Lock Removal" (Ref 32-00-30/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
747-400 MAINTENANCE MANUAL
 S 494-010
 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.
 (6)  Install the ground locks in all landing gear (Ref 09-11-00/201).
 S 864-029
 WARNING: MAKE SURE ALL PERSONS AND EQUIPMENT ARE AWAY FROM THE DOOR
_______ OPERATION AREA. A FAST MOVEMENT OF THE DOORS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (7)  Make sure that all persons are away from the door operation area.
 S 864-036
 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.
 (8)  
Pressurize hydraulic system No. 1 (Ref 29-11-00/201).

 S 714-013

 (9)  
Do a check of the sequence valve for leaks:

 (a)  
Move the ground release handle for the main landing gear to the DOORS OPEN and DOORS CLOSED position two times.

 (b)  
Move the ground release handle to the DOORS OPEN position.

 (c)  
Put the control handle in the DN position for 3 minutes. 1) Do a check for leaks at the sequence valve.

 (d)  
Push the override button for the lever lock of the control handle.

 (e)  
Move the control handle to the UP position for 3 minutes. 1) Do a check for leaks at the sequence valve.

 (10)
 Move the control handle to the DN position.

 S 864-037
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-33-04
 ALL  ú ú 01 Page 406 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 864-038
 WARNING: MAKE SURE ALL PERSONS AND EQUIPMENT ARE AWAY FROM THE DOOR
_______ OPERATION AREA. A FAST MOVEMENT OF THE DOORS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (11)
 Move the ground release handle for the doors for the main landing gear to the DOORS CLOSED position.
　
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