747-400 AMM 飞机维护手册 舱门 DOORS 2(120)

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 (4)  S 434-015Install the rain seal (Ref 52-32-18/401).
 (5)  S 424-045Connect the wire bundle, electrical connectors D4727J and D4732J and ground wires to terminals that are above the door at the aft end.
 (6)  S 824-016For a new door, (with 1/4-inch too much skin at its bottom and sides), slowly lower the door with the sling while you remove only the minimum quantity of skin to permit the door to be closed (0.005 to 0.015-inch clearance between the door skin and the body cutout). Remove only a small quantity at a time. Do not remove too much skin.
 NOTE:____ This is the initial clearance. You will get the final clearance after you adjust the door.
 (7)  S 094-017Remove the safety barrier.
 (8)  S 434-018Connect the lift mechanism as follows (Fig. 404): (a) Manually turn the lift power unit to set the door downstop clearance for the mechanism adjustment (View A, Fig. 404).

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400
MAINTENANCE MANUAL

SEE A  ROTARY ACTUATOR
ROTARY DOOR HINGE
ACTUATOR LINK DOOR UP SWITCHUPSTOP CLEARANCE:
0.19-0.21 INCH 1 ROTARY ACTUATOR 0.09-0.21 INCH 2
SIDE
CARGO
DOOR
0.063-0.071 INCH SWITCH CLEARANCE
DOOR UP SWITCH ADJUSTMENT
FWD A
DOOR DOWN STOP 
DOOR DOWN SWITCH 
DOWNSTOP CLEARANCE 
ROTARY  0.19-0.21 INCH  1 
ACTUATOR  0.06-0.18 INCH  2 
1 UPSTOP OR DOWNSTOP CLEARANCE 
FOR SWITCH OR MECHANISM 
ADJUSTMENT (LIFT POWER UNIT  0.32-0.40 INCH 
CRANKED MANUALLY TO OBTAIN  SWITCH CLEARANCE 
CLEARANCE) 
2  UPSTOP OR DOWNSTOP CLEARANCE 
AFTER ELECTRICAL OPERATION STOPS 

ROTARYSCD-7 RIGGING PIN ACTUATOR ARM
(0.156-INCH ROTARY DIAMETER) ACTUATOR LINK
POINT "B"
DOOR DOWN SWITCH ADJUSTMENT
A
Rotary Actuator Adjustment Figure 404
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747-400 MAINTENANCE MANUAL
 (b)  
Install the SCD-7 rigging pin in the bottom slot of the actuator link as shown at point B.

 (c)  
While you keep a tight fit on the rigging pin, adjust the rod end on the actuator link until you can install the bolt on the door.

 NOTE: Make sure you keep the downstop clearance to 0.20
____
 inch.

 (d)  Install the bolt.
 S 094-019
 (9)  
Remove the sling from the door.

 S 864-020

 (10)
 Remove the DO-NOT-CLOSE tags and close these circuit breakers for the side cargo door:

 (a)  
P415 Power Distribution Center - Right
 1) 415F17 SIDE CARGO DOOR CONT

 (b)  
P715 Aux/Ext No. 2 Power Center
 1) SIDE CARGO DOOR PWR

 I.  
Adjust the Side Cargo Door Mechanisms

 S 824-021
 (1)  
Adjust the hook pin fittings (Fig. 405):

 (a)  
Set the hook actuator in the rigged closed position (Fig. 403):

 CAUTION: USE A TORQUE WRENCH WITH A DIAL INDICATOR TO FIND
_______ WHEN THE ACTUATOR INTERNAL STOPS ARE AGAINST EACH OTHER. DO NOT USE MORE THAN 70 POUND-INCHES OF TORQUE. IF YOU USE MORE THAN 70 POUND-INCHES, YOU CAN CAUSE INTERNAL DAMAGE TO THE ACTUATOR.
 1)  Use a torque wrench with a dial indicator to manually turn the actuator in the close direction (clockwise).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
　
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