D.
Procedure (Fig. 204)
S 492-019
(1) Make sure that you install the ground locks on the landing gear (Ref 09-11-00/201).
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A
747-400
MAINTENANCE MANUAL
SEE A SEE B
A
DOOR ACTUATOR (EXTENDED)
BALLNOSE GEAR LOCKDOOR LOCK PIN
DOOR BELLCRANK FITTING
B
Nose Gear Door Lock Figure 204
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MAINTENANCE MANUAL
S 862-020
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 to open the nose gear doors.
NOTE: The handle for the nose gear doors is outside the fuselage
____ aft of the left-hand door of the nose wheel well.
S 862-021
(3)
Release the pressure from hydraulic system No. 1 (AMM 29-11-00/201).
S 492-022
(4)
Install the door lock for the nose gear doors as shown (Fig. 204).
TASK 32-00-30-492-023
6. Wing Landing Gear Door Lock Installation
________________________________________
A. Special Tools and Equipment
(1)
3MIT65B80190 - Wing Landing Gear Door Lock
B.
References
(1)
09-11-00/201, Towing
(2)
29-11-00/201, Main Hydraulic Supply System
(3)
12-15-06/301, Landing Gear Tire
C.
Access
(1)
Location Zone
731 Wing Landing Gear Door, Forward, LH
741 Wing Landing Gear Door, Forward, RH
D.
Procedure (Fig. 205)
S 222-132
CAUTION: MAKE SURE THAT YOU DO NOT MOVE OR DAMAGE THE WING GEAR TRUCK
_______ SENSORS OR TARGET BRACKET. IF THE TARGET BRACKET OR SENSORS ARE MOVED, THEN THE AIRPLANE SYSTEMS MAY NOT RECOGNIZE AN IN-AIR CONDITION.
(1) If the sensor or target bracket is moved or damaged, then do the task to measure the wing landing gear truck sensor clearance (AMM 32-61-22/201).
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MAINTENANCE MANUAL
SEE A
COLLAR
ASSEMBLY
WING GEAR
DOOR LOCK
HANDLE FWD
A
Wing Gear Door LockFigure 205
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S 492-024
(2) Make sure that you install the ground locks for the landing gear (AMM 09-11-00/201).
S 612-072
CAUTION: MAKE SURE YOU DO THESE STEPS BEFORE YOU OPERATE THE DOORS:
_______ MAKE SURE SHOCK STRUTS (OLEOS) FOR THE BODY GEAR HAVE THE CORRECT MINIMUM DIMENSION. MAKE SURE THE TIRES ARE AT THE CORRECT PRESSURE. IF YOU DO NOT OBEY THESE INSTRUCTIONS, THE DOOR CAN HIT AND CATCH ON THE TIRES. IF THE STRUT AND TIRES ARE DEFLATED, THE BODY GEAR DOORS WILL HIT THE GROUND WHEN YOU OPEN THEM.
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