3. LAMP 98 | 1 FT
NOSE LANDING GEAR STRUT
LIGHT BEAM PATTERNS
2. OUTER RETAINING RING
4. GASKET SEE A
5.
LAMP BEAM ADJUSTMENT SCREWS (3 LOCATIONS)
6.
INNER RETAINER RING
A
Nose Gear Taxi Lights - Lamp Replacement and Adjustment Figure 201
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH NOSE GEAR TAXI LIGHTS ú
33-42-04
ú ú 01 Page 202 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO
_______ INSTALL THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(a)
Do this task: "The Installation of the Door Locks on the Nose Landing Gear" (Ref 32-00-30/201).
(b)
Open this circuit breaker and attach a DO-NOT-CLOSE tag:
1) P414 Power Distribution Center - left
a) 414L1 NOSE GEAR TAXI LT
S 962-030
(2) Do these steps to replace the lamp:
(a) Remove the outer retaining ring screws (1) and remove the retainer (2).
NOTE: Do not turn the adjustment screws.
____
(b)
Pull the lamp (3) from the housing.
(c)
Disconnect the electrical wires from the lamp.
(d)
Remove the lamp.
(e)
Remove the gasket (4) from the defective lamp.
(f)
Put the gasket you removed from the defective lamp on the replacement lamp.
CAUTION: WHEN YOU INSTALL THE LAMP, MAKE SURE IT IS CORRECTLY
_______ ALIGNED AGAINST THE RETAINING RING. THE LAMP CAN BREAK IF YOU DO NOT INSTALL IT CORRECTLY.
(g) Connect the electrical wires to the replacement lamp.
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.
(h) Seal each electrical connection (AMM 20-11-29/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH NOSE GEAR TAXI LIGHTS ú
33-42-04
ú ú 02 Page 203 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(i)
Install the replacement lamp.
(j)
Put the outer retainer (2) on the lamp and install the retaining ring screws (1).
S 712-031
(3) Do a test of the lamp:
(a)
Supply electrical power (Ref 24-22-00/201).
(b)
Remove the DO-NOT-CLOSE tag and close this circuit breaker:
1) P414 power distribution center - left a) 414L1 NOSE GEAR TAXI LT
(c)
Put the TAXI switch on the P5 panel to ON.
(d)
Make sure the replacement lamp is on.
(e)
Put the TAXI switch on the P5 panel to OFF.
(f)
Make sure the replacement lamp is off.
(g)
Remove electrical power if it is not necessary (Ref 24-22-00/201).
F. Put the airplane back to its usual condition
S 092-015
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO
_______ REMOVE THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1) Do this task: "The Removal of the Door Locks on the Nose Landing Gear" (Ref 32-00-30/201).
TASK 33-42-04-822-017
3. Lamp Adjustment (Nose Gear Taxi Light) (Fig. 201)______________________________________
A. Special Tools
(1)
11MIT65B04012 Actuator Lock - Nose Landing Gear Door (Recommended)
(2)
10MIT65B04012 Actuator Lock - Nose Landing Gear Door (Alternative)
(3)
7MIT65B04012 Actuator Lock - Nose Landing Gear Door (Alternative)
B. Parts ~.............................................................................. | AMM | | AIPC | ................. ...........................| | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ...............................................................................| | 201 | 1 | Retaining Screw | 33-42-04 | 10 | 45 | | | 2 | Outer Retaining Ring | | | 50 | | | 3 | Lamp | | | 60 | | | 4 | Gasket | | | 55 | | | 5 | Lamp Beam Adjustment Screws | | | 40 | | | 6 | Inner Retaining Ring | | | 65 | 2......…........…...................................…...........…......….......1
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