NAVIGATION LIGHT ASSEMBLY A
Navigation Light Installation Figure 201
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747-400 MAINTENANCE MANUAL
 (b)  
Disconnect the electrical connector (3).

 (c)  
Remove the bolts (4) and pull the light assembly (2) from the wing.

 S 022-028
 (3)  Do these steps to remove the navigation light lamp:
 (a)  
Loosen the screws (5) that hold the lens retainer (6).

 (b)  
Lift the lens retainer (6) and the lens (9) from the light assembly.

 (c)  
Loosen the lampholder bolts (7) and turn the clamp assemblies.

 (d)  
Remove the navigation light lamp (10).

 TASK 33-43-04-402-029
 3.  Wingtip Lamp Installation (Fig. 201)_________________________
 A. Consumable Materials
 (1)  
B00062 Solvent - Acetone

 (2)  
G01043 Cloth, lint free

 B. Parts ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 201 | 1 | Access Panel | 57-23-01 | 10 | 150 | | | 2 | FWD Navigation Light Assy - Right | 33-43-04 | 01 | 95 | | | | FWD Navigation Light Assy - Left | | | 90 | | | 3 | Electrical Connector | | | | | | 4 | Mounting Bolts | | | | | | 5 | Retainer Screws | | | | | | 6 | Lens Retainer | | | | | | 7 | Lamp Holder Locking Bolt | | | | | | 8 | Gasket | | | | | | 9 | Lens | | | | | | 10 | Lamp | | | | 2......…........…...................................…..........…......…........1
 C. References
 (1)  
24-22-00/201, Manual Control

 (2)  
SSM 33-43-10

 D. Access
 (1)  Location Zone
 538 Wingtip - Left
 638 Wingtip - Right

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 E.  Procedure
 S 862-037
 (1)  Prepare for the installation:
 (a)  Make sure the terminals that engage the lamp are not dirty.
 NOTE: If the terminals are dirty, clean them to make a good
____
 electrical connection.

 (b)  
Clean the reflector with a lint free cloth.

 CAUTION:_______DO NOT LET YOUR FINGERS TOUCH THE LAMP. OILS FROM THE SKIN CAN CAUSE AN EXPLOSION OF THE LENS WHEN IT IS HOT.

 (c)  
Use a lint free cloth to hold the lamp (10) and make sure that the lamp is clean.

 NOTE: If the lamp is dirty, use an acetone solvent on a lint
____ free cloth to clean the lamp.
 S 422-030
 (2)  Do these steps to install the navigation light lamp:
 (a)  
Use a cloth to hold the lamp (10) and push the lamp into the lampholder.

 (b)  
Turn the clamp assembly into its position and tighten the lamp holder bolt (7).

 (c)  
Clean the gasket (8) and the lens (9) with a lint free cloth.

 (d)  
Put the retainer (6) and the lens (9) on the lamp assembly and tighten the lens retainer screws (5).

 S 412-031
 (3)  Do these steps to install the navigation light assembly:
 (a)  
Clean the inner surface of the lens with a lint free cloth.

 (b)  
Put the light assembly (2) on the bracket and install the bolts (4).

 (c)  
Connect the electrical connector (3).

 (d)  
Close the access panel (1).
　
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