747-400 AMM 飞机维护手册 起落架 LANDING GEAR 1(24)

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 E.  Door locks for door actuators are also given as equipment that can be sent with the airplane.
 F.  After you install the door locks on the body gear you must not operate the wing gear doors. The body gear door locks are in the operation area of the wing gear doors.
 G.  Install ground locks on all landing gear when you park, tow, or do maintenance on the airplane (AMM 09-11-00/201).
 H.  Hydraulic system No. 1 supplies power to the body gear and nose gear doors. Hydraulic system No. 4 supplies power to the wing gear doors.
 I.  Placards are put in areas in the wheel wells. They tell the ground crews to be careful and to follow the instructions to operate the ground release handles for the doors. There is a stenciled stripe by the ground release handle for the nose gear doors to show the doors open position.
 J.  When you open the doors for the body gear, the shock strut must have the specified minimum dimension or you can have interference between the door and the landing gear tires. The door can hit and catch on the tire.
 TASK 32-00-30-002-001
 2.  Nose Landing Gear Door Operator Rods Disconnection
__________________________________________________
 A.  References
 (1)  
09-11-00/201, Towing

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

 (3)  
IPC 32-22-03 Fig. 2

 B.  
Access

 (1)  
Location Zone
 711 Nose Landing Gear Door, Forward, LH
 712 Nose Landing Gear Door, Forward, RH

 C.  
Procedure (Fig. 201)

 S 492-002
 (1)  Make sure that you install the ground locks on the landing gear (Ref 09-11-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400
MAINTENANCE MANUAL

SEE A
FORWARD DOOR ACTUATOR
BELLCRANK
FWD
BELLCRANK SUPPORT FITTING
FORWARD DOOR OPERATOR ROD
SEE B SHOWN WITH DOORS OPEN
A
OPERATOR ROD
BOLT
LOCKNUT
DOOR FITTING
FORWARD DOOR (LEFT) B
Nose Wheel Well Forward Door Operator Rods Connection
Figure 201

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 862-003
 WARNING: MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE DOOR
_______ OPERATION AREA. FAST MOVEMENT OF THE DOORS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  Move the ground release handle for the nose gear doors to the Doors Open position.
 NOTE:____This will open the nose gear doors. The handle for the nose gear doors is outside the fuselage aft of the left-side door of the nose wheel well.
 S 862-004
 (3)  
Release the pressure from hydraulic system No. 1 (AMM 29-11-00/201).

 S 022-005

 (4)  
Disconnect the two forward operator rods from the nose gear doors.

 S 492-035

 (5)  
Put a warning streamer on the end of each rod.

 TASK 32-00-30-002-006
 3.  Wing Landing Gear Door Operator Rods Disconnection__________________________________________________
 A. References
 (1)  
09-11-00/201, Towing

 (2)  
12-15-06/301, Landing Gear Tire

 (3)  
29-11-00/201, Main Hydraulic Supply System

 (4)  
IPC 32-12-08 Fig. 1

 B.
Access

 (1)  
Location Zone
 731 Wing Landing Gear Door, LH
 741 Wing Landing Gear Door, RH

 C.
Procedure (Fig. 202)

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