(2)
AMM 29-11-00/201, Main Hydraulic Supply System
(3)
AMM 32-00-30/201, Landing Gear Door Locks
(4)
AMM 32-36-00/501, Wing Gear Alternate Extension System
(5)
IPC 32-36-08 Fig. 1
B.
Access
(1)
Location Zone 731 Wing Landing Gear Door, Center Section Inboard Panel, LH 741 Wing Landing Gear Door, Center Section Inboard Panel, RH
C.
Installation (Fig. 401)
S 434-014
(1) Assemble the lever assembly.
NOTE: This step is necessary if you disassembled the lever assembly
____
in the removal task.
(a)
Install the bearing, bolt, washer, and the nut.
(b)
Install the cotter pin.
S 424-015
(2) Attach the lever assembly to the door actuator.
NOTE: The head of the bolt must be on the forward side.
____
S 434-016
(3) Assemble the ground release cam (Ref 20-11-01/401).
NOTE: This step is necessary if you disassembled the ground release
____
cam in the removal task.
(a)
Install the bearings.
(b)
Make sure the spacer is between the bearings.
S 434-017
(4)
Install the ground release cam.
(a)
Put the ground release cam on the bolt which holds the large end of the actuator.
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A
747-400 MAINTENANCE MANUAL
(b) Make sure the clearance on each side of the cam is the same
between the lugs for the lever assembly fork.
NOTE:____ The difference in the clearances must not be more than
0.02 inches. You must add washers and adjust the shim
to get the correct dimensions.
(c) Install the nut.
1) Tighten the nut 50 to 80 pound-inches.
2) Install the cotter pin.
(d) Connect the differential output rod to the ground release cam.
1) Install the cotter pin.
S 864-018
(5)
Make sure the ground release handle for the doors of the main landing gear is in the DOORS CLOSED position.
S 864-019
(6)
Put the door actuator for the wing landing gear in its closed and locked position.
NOTE: This is the extension of the actuator when the doors for the
____ wing landing gear are in the closed and locked position.
S 224-020
(7)
Make sure the dimension between the bearing and the ground release cam is 0.18 to 0.20 inches (Detail B, Fig. 401).
S 864-021
(8)
Move the ground release handle for the doors of the main landing gear to the DOORS OPEN position.
S 424-011
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.
(9) Do this task: "Wing Landing Gear Door Operator Rods Connection" (AMM 32-00-30/201).
S 494-023
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK 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.
(10) Do this task: "Body Landing Gear Door Lock Removal" (AMM 32-00-30/201).
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ALL ú ú 01 Page 406 ú Oct 18/01
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