747-400 AMM 飞机维护手册 灯 LIGHTS(89)

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 1) Do this task: "Leading Edge Flap Extention" (Ref 27-81-00/201).
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO
_______ INSTALL THE LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT INSTALL THE SAFETY LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 2) Do this task: "Extended Leading Edge Flap Deactivation and Safety Lock Installation" (Ref
 27-81-00/201). 3) Install a DO-NOT-OPERATE tag to the flap control lever. 4) Get access to the rear of the landing light through the
 access door.
 5)  Remove the self-locking nut from the T-bolt and trunnion assembly (7) (Fig. 201), to release the cover retaining straps.
 6) Remove the cover (5) (Fig. 201).
 7) Remove the lockwire from each adjustment screw (1).
 8) Loosen the locknut (2) on each adjustment screw (1).

 S 822-125
 (2)  To adjust the light beam with a Light Aligner do these steps:
 (a)  Set the light aligner in its position (Fig. 203). 1) Measure the height of the light from the ground.
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 2)  Use the height of the light to adjust the height of the light aligner.
 (b)  Supply electrical power (AMM 24-22-00/201).
 CAUTION:_______DO NOT KEEP THE LIGHTS ON FOR MORE THAN FIVE MINUTES. AFTER YOU MAKE THE LIGHTS COME ON, MAKE THE LIGHTS GO OFF FOR AN EQUAL TIME. BECAUSE OF THE HEAT, THE CONTINUOUS OPERATION OF THE LIGHTS WILL DECREASE THE LIFE OF THE LAMPS.
 (c)  
At the overhead panel, P5, set the switch for the landing light to the on position.

 (d)  
Do these steps to adjust the landing lights:

 WARNING: DO NOT TOUCH THE LIGHT ASSEMBLY WITH YOUR BARE HANDS; USE
_______ GLOVES. THE HEAT FROM THE LAMP WILL BURN YOUR BARE HANDS.
 1)  Turn the adjustment screws (1) until only the center indicator on the light aligner is yellow.
 NOTE: The other indicators must be black.
____
 2) Tighten the locknuts (2) to keep the adjustment screws (1) in their position. 3) Set the switch to the off position.
 S 822-126
 (3)  To adjust the light beam with a target do these steps:
 (a) Set the target in its position on the ground (Fig. 204).
 NOTE: The target is a mark or an object sufficiently large
____ to be clearly seen when you point a light at it.
 (b)  Supply electrical power (AMM 24-22-00/201).
 CAUTION: DO NOT KEEP THE LIGHTS ON FOR MORE THAN FIVE MINUTES.
_______ AFTER YOU MAKE THE LIGHTS COME ON, MAKE THE LIGHTS GO OFF FOR AN EQUAL TIME. BECAUSE OF THE HEAT, THE CONTINUOUS OPERATION OF THE LIGHTS WILL DECREASE THE LIFE OF THE LAMPS.
 (c)  At the overhead panel, P5, set the switch for the landing light to the on position.
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747-400 MAINTENANCE MANUAL
 (d) Do these steps to adjust the landing light:
 WARNING: DO NOT TOUCH THE LIGHT ASSEMBLY WITH YOUR BARE HANDS; USE
_______ GLOVES. THE HEAT FROM THE LAMP WILL BURN YOUR BARE HANDS.
 1) Turn the adjustment screws (1) until the light beam is on the target. 2) Tighten the locknuts (2) to keep the adjustment screws (1) in their position. 3) Set the switch to the off position.
 E. Put the Airplane Back to Its Usual Condition
 S 432-104
 (1)
Put a lockwire on each adjustment screw (1).

 S 432-105

 (2)
Install the cover (5) (Fig. 201).

 S 412-047

 (3)
Close the access door.

 S 092-048

 (4)
Remove the target.

 S 092-049
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT DO THE STEPS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
　
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