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A
747-400 MAINTENANCE MANUAL
 (b)  
Add or remove striker arm plates (6) 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.

 E.
Put the Airplane to Its Usual Condition.

 S 094-026
 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.
 (1)  
Do this task: "Wing Landing Gear Door Lock Removal"
 (Ref 32-00-30/201).

 S 094-032

 (2)  
Do this task: "Body Landing Gear Door Lock Removal"
 (Ref 32-00-30/201).

 (3)
Remove hydraulic power if it is not necessary (Ref 29-11-00/201).

 S 864-027
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747-400 MAINTENANCE MANUAL
 BODY LANDING GEAR UPLOCK-OPERATED SEQUENCE VALVE - REMOVAL/INSTALLATION
_______________________________________________________________________
 1.  General_______
 A.  This procedure contains these two tasks:
 (1)  
The removal of the uplock-operated sequence valve for the body landing gear

 (2)  
The installation of the uplock-operated sequence valve for the body landing gear.

 B.  
To remove the uplock-operated sequence valve these operations are necessary:

 (1)  
Disconnect and install caps on the hydraulic hoses.

 (2)  
Remove the sequence valve.

 (3)  
Remove the hydraulic fittings from the sequence valve.

 C.  
To install the uplock-operated sequence valve these operations are necessary:

 (1)  
Install the hydraulic fittings in the sequence valve.

 (2)  
Make sure the white bar on the sequence valve slide is in the correct position.

 (3)  
Connect the hydraulic hoses to the valve.

 (4)  
Do a check of the operation of the sequence valve.

 TASK 32-33-06-024-001
 2.  Body Landing Gear Uplock-Operated Sequence Valve Removal________________________________________________________
 A.  Consumable Materials
 (1)  
D00288 Lubricant - MCS 352 (Skydrol Assembly Lube)

 B.  
References

 (1)  
09-11-00/201, Towing

 (2)  
29-11-00/201, Hydraulic Supply System

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

 (4)  
IPC 32-33-06 Fig. 1

 C.  
Access

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

 D.  
Prepare for the Removal

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 S 494-015
 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 494-003
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASKS 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: "Wing Landing Gear Door Lock Installation" (Ref 32-00-30/201).
　
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