(c)
Install a DO-NOT-OPERATE tag on the flap control lever.
(d)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
1) P414 Power Distribution Center - Left
a) 414L3 LANDING LT LEFT INBD
b) 414L2 LANDING LT RIGHT INBD
2) P415 Power Distribution Center - Right
a) 415L31 LANDING LT LEFT OUTBD
b) 415L32 LANDING LT RIGHT OUTBD
(e) Get access to the rear of the landing light through the access door.
S 962-095
(2) Do these steps to replace the landing light lamp:
(a)
Remove the self-locking nut from the T-bolt and trunnion assembly (7) to release the cover retaining straps.
(b)
Remove the cover (5).
(c)
Disconnect the electrical wires from the lamp.
(d)
Remove the screws (2) and remove the frame (1).
NOTE: Do not turn the adjustment screws (8).
____
(e)
Remove the lamp (3).
CAUTION:_______INSTALL OR REPLACE THE GASKET IF IT IS NECESSARY. FAILURE TO INSTALL OR REPLACE THE GASKET CAN DECREASE THE LIFE OF THE LAMP.
(f)
Examine the installation of the gasket (4), or replace the gasket on the lamp (3).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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747-400 MAINTENANCE MANUAL
CAUTION: WHEN YOU INSTALL THE LAMP, MAKE SURE IT IS CORRECTLY
_______ ALIGNED AGAINST THE RETAINER. THE LAMP CAN BREAK IF YOU DO NOT INSTALL IT CORRECTLY.
(g)
Install the replacement lamp (3) with the filament in the horizontal position.
(h)
Install the frame (1).
(i)
Install the screws (2).
(j)
Connect the electrical wires to the replacement lamp (3).
WARNING: MAKE SURE YOU SEAL EACH BARE ELECTRICAL CONNECTION NEAR
_______ THE LIGHT TO PREVENT AN EXPLOSION OF FUEL FUMES. AN EXPLOSION CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(k)
Seal each electrical connection (AMM 20-11-29/201).
(l)
Install the lamp cover (5).
(m)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
1) P414 Power Distribution Center - Left a) 414L3 LANDING LT LEFT INBD b) 414L2 LANDING LT RIGHT INBD
2) P415 Power Distribution Center - Right a) 415L31 LANDING LT LEFT OUTBD b) 415L32 LANDING LT RIGHT OUTBD
S 712-087
(3) Do these steps to do a test of the replacement lamp:
(a)
Supply electrical power (Ref 24-22-00/201).
(b)
Put the applicable LANDING switch on the P5 Panel to ON.
(c)
Make sure the replacement lamp is on.
(d)
Put the LANDING switch on the P5 panel to OFF.
(e)
Make sure the landing light is off.
E. Put the airplane back to its usual condition
S 412-019
(1) Close the access door.
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747-400 MAINTENANCE MANUAL
S 092-020
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.
(2)
Do this task: "Safety Lock Removal and Leading Edge Flap Activation" (Ref 27-81-00/201).
S 862-076 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 灯 LIGHTS(87)
