747-400 AMM 飞机维护手册 舱门 DOORS 3(51)

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 2)  Manually move the hook actuator to the rigged closed
 position.
 a)  Use a torque wrench to find the internal stops
 (Fig. 407).
 b)  Manually turn the hook actuator two turns
 counterclockwise.
 3)  Adjust the midspan latch fittings to get 0.002-inch
 clearance between the midspan latch pins and cams, if it is
 necessary.
 (d)  Close the door and set the latches in rigged closed position.

 S 714-043
 (9)  Manually turn the latch actuator in the release direction, then the same number of turns in the latching direction.
 NOTE: Make sure the torque necessary to turn the actuator is
____ less than 25 pound-inches.
 S 824-032
 (10)
 Adjust the Door Closed Switch as follows (Detail B, Fig. 405):

 (a)  
Close and latch the door.

 (b)  
Make sure the flushness between the door skin and the body skin is correct (Fig. 406).

 (c)  
Adjust the hook pin fittings as it is necessary to get the correct flushness ("Adjust hook pin fittings").

 (d)  
Adjust the switch in bracket and turn the adjustment bolt until the switch plunger touches its bottom.

 (e)  
Turn the adjustment bolt 3.0 |1/8 turns in the opposite direction to get 0.125 inch between the adjustment bolt and the switch plunger in the bottom position.

 S 784-033
 (11)
 Make sure the pressure relief door opens under a 12- to 16-pound force applied at the center of the door, 1 inch from the top.

 S 214-049

 (12)
 Make sure the pressure refief door opens 4 | 0.1 inches under a 15-to 20-pound force.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 J. Assemblies to the Cargo Door - Installation
 S 424-046
 (1)  Install the upper lining with the necessary fasteners.
 NOTE: Use countersunk screws with skin washers on the top
____ edge of door liner to prevent damage to adjacent structure.
 S 434-035
 (2)
Install the junction box for the cargo door (AMM 52-34-05/401).

 S 824-036

 (3)  
Examine and adjust the door operating mechanism and sequence switches as it is necessary (AMM 52-34-00/501).

 S 434-037

 (4)  
With the cargo door closed and latched, install the forward and aft hinge fairings.

 NOTE: The Forward and aft hinge fairings are not interchangeable.
____ The fairings are designed to give incorrect installation.
 S 434-038
 (5)  
Make sure the jumper assembly is installed at each hinge fairing and make sure it is correctly connected and installed.

 (6)  
Install the rain seal (AMM 52-09-03/401).

 (7)  
Install the doorway ceiling panel (AMM 25-52-01/401).

 S 434-039
 S 414-040
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 FORWARD/AFT CARGO DOOR - INSPECTION/CHECK
_________________________________________
 1.  General_______
 A.  This procedure contains these tasks:
 (1)  
a task to examine the cargo door fittings and hinges.

 (2)  
a task to inspect the forward/aft cargo door hinge mechanism.

 (3)  
a task to inspect the lift mechanism.

 B.  
The task to inspect the forward/aft cargo door hinge mechanism is included in the task to examine the door fittings and hinges. Thus, if you do the task to examine the door fittings and hinges, then it is not necessary to do the task to inspect the forward/aft cargo door hinge mechanism.

 C.  
To examine the parts:

 (1)  
Remove the part

 (2)  
Measure the part
　
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