(10)
 AMM 32-61-00/501, Landing Gear Position Indicating and Warning System

 (11)
 AMM 34-61-02/401, Control Display Unit

 (12)
 AIPC 32-31-02, Fig. 1, AIPC 32-31-66, Fig. 1

 (13)
 WDM 27-51-21, WDM 32-35-12, WDM 32-61-11, WDM 32-61-21,
 WDM 33-11-21, WDM 34-46-11

 C.
Access

 (1)  
Location Zone
 137 Body Landing Gear Wheel Well, LH
 138 Body Landing Gear Wheel Well, RH
 222 Control Cabin, RH

 D.
Prepare for the Installation of the Control Module.

 S 494-042
 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)  Make sure you install the ground locks in all landing gear
 (AMM 09-11-00/201).

 S 864-056
 WARNING: MAKE SURE YOU REMOVE THE PRESSURE FROM HYDRAULIC SYSTEMS
_______ NO. 1 AND 4. IF YOU DO NOT DO THIS, THE LANDING GEAR CAN ACCIDENTLY RETRACT. INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR IF THE LANDING GEAR ACCIDENTLY RETRACTS.
 (2)  Make sure there is no pressure to hydraulic systems No. 1 and 4 (AMM 29-11-00/201).
 S 494-115
 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 AND DAMAGE TO EQUIPMENT.
 (3)  Do this task: "Installation of the Door Locks on the Doors for the Wing Landing Gear" (AMM 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400
MAINTENANCE MANUAL

 S 494-036
 (4)  
Do this task: "Installation of the Door Locks on the Doors for the Body Landing Gear" (AMM 32-00-30/201).

 S 494-119

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

 S 494-016

 (6)  
Install rigging pin LG-1 in the quadrant above the selector valve for the wing landing gear.

 S 494-017

 (7)  
Install rigging pin LG-2 in the quadrant above the selector valve for the nose landing gear and the body landing gear.

 E.
Install the Control Handle Module.

 S 024-052
 (1)  
Remove the safety pin from the control module quadrant.

 S 424-018

 (2)  
Install the control handle module (Fig. 401):

 NOTE: There is an alternate method below to install the
____ control module without the removal of the control display unit.
 (a)  
Make sure the control handle is in the OFF position.

 (b)  
Do this task: "Control Display Unit Removal" (AMM 34-61-02/401).

 NOTE: Remove only the right control display unit (CDU).
____ Do this to give access to the connection between the control rod and the swivel joint of the handle trunnion.
 (c)  Help the control rod into the swivel joint of the handle trunnion while you push the module into its position.
 NOTE: The alignment pin helps electrical connectors D12461 and
____ D12462 into their position. The connectors make a connection when you push the module into its position.
 (d)  
Install the nut that attaches the rod to the handle trunnion.

 (e)  
Tighten the nut while you hold the rod with a screwdriver.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
747-400 MAINTENANCE MANUAL
 (f)  
Tighten the nut to 30-50 lb-inches torque.

 (g)  
Do this task: "Control Display Unit Installation" (AMM 34-61-02/401).
　
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