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A
747-400 MAINTENANCE MANUAL
S 494-005
(3) Do this task: "Body Landing Gear Door Lock Installation"
(AMM 32-00-30/201).
S 034-006
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.
(4)
Do this task: "Wing Landing Gear Door Operator Rods Disconnection" (AMM 32-00-30/201).
S 864-005
(5)
Remove the power from the hydraulic system 1 (AMM 29-11-00/201).
S 864-006
(6)
Pressurize the hydraulic system 4 (AMM 29-11-00/201).
S 864-007
(7)
Move the ground release handle for the doors of the main landing gear to the DOORS CLOSED position.
S 864-008
(8)
Remove the power from the hydraulic system 4 (AMM 29-11-00/201).
S 984-009
(9)
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.
D. Removal (Fig. 401)
S 034-007
(1)
Disconnect the differential output rod from the ground release cam.
(2)
Remove the nut, shims, washers, and the ground release cam.
S 034-009
(3)
Disassemble the ground release cam if it is necessary.
(a)
Remove the bearings.
(b)
Remove the spacer.
S 034-008
S 034-010
(4)
Remove the lever assembly.
(a)
Disassemble the lever assembly if it is necessary.
(b)
Remove the bolt.
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747-400 MAINTENANCE MANUAL
SEE A
DOOR ACTUATOR
FWD
ACTUATOR BEAM
SEE B
A
DOOR ACTUATOR
B
DOOR ACTUATOR
A
BEARING
GROUND RELEASE CAM
A 0.08 |0.01
DIFFERENTIAL LEVER OUTPUT ROD ASSEMBLY
BOLT WASHER NUT (2 LOCATIONS)
DIFFERENTIAL
LEVER
OUTPUT ROD
ASSEMBLY
GROUND RELEASE CAM
BEARING
A B
NUT
0.19 |0.01
NUT
A
RIGHT SIDE
B LEFT SIDE
Wing Landing Gear Door Actuator Release Mechanism
Figure 401 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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747-400
MAINTENANCE MANUAL
DIFFERENTIAL OUTPUT ROD
A-A
DIFFERENTIAL
OUTPUT ROD
FWD GROUND RELEASE CAM
B-B
1
DIMENSIONS EQUAL WITHIN 0.02 INCH
Wing Landing Gear Door Actuator Release Mechanism
Figure 401 (Sheet 2)
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