(2)
The Logo Lights operate with 115 volts ac.
B. You control the logo lights with a switch on the overhead panel, P5.
C. For more data about this lighting system, refer to these sources:
(1)
SSM 33-40-02
(2)
WDM 33-49-01
2. Logo Light Installation_______________________
A. The Logo Light consists of a sealed beam incandescent lamp installed in a housing assembly. Each housing is sealed to keep out fuel and water. Screws on the face of the housing permit vertical and horizontal adjustment of the lamp.
B. The lamp is retained with an adjustable quick-release clamp. A rubber-glass cloth cuff between the lamp and clamp cushions the lamp. An indexing tab on the clamp orients the lamp for a horizontal pattern. The lamp may be rotated to provide a vertical pattern by placing the lamp indexing lug outside the clamp indexing tabs. A louver assembly is held in position over the face of the lamp. The adjusting screws extend from a support pan through threaded ball nuts attached to the clamp assembly. Springs over the adjusting screws are held in position by teflon washers at each end and help hold the clamp assembly in position. Cotter pins inserted through the ends of each adjusting screw prevent the screws from being backed out too far. A bezel with pyrex lens attaches to the support pan with screws.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH LOGO LIGHTS ú
33-49-00
ú ú 01 Page 1 ú Jul 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500
MAINTENANCE MANUAL
LOGO LIGHT SEE A
TRANSFORMER LOGO LIGHT SEE A
HOUSING ASSEMBLY SEE B ADJUSTMENT SCREWS (3 PLACES) TRANSFORMER
CAPTIVE MOUNTING SCREW (4 PLACES)
A
QUICK
RELEEASE CLAMP
CAPTIVE SCREWS (4 PLACES)
LENS
SUPPORT PAN
LOUVER ASSEMBLY
INDEXING TAGS 1
INDEXING LUG 1
BEZEL
BEZEL AND LENS THREADED
RETAINING SCREWS BALL NUT
(3 PLACES)
CUFF
ADJUSTING SCREWS (3 PLACES)
LAMP
TERMINALSALIGN INDEXING LUG
B
WITH INDEXING TAGS
Logo Light Location
Figure 1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH LOGO LIGHTS ú
33-49-00
ú ú 01 Page 2 ú Nov 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
LOGO LIGHTS - MAINTENANCE PRACTICES
___________________________________
1. General_______
A. This procedure has these tasks for a logo light (referred to as a light):
(1)
Logo Light - Lamp Replacement
(2)
Logo Light - Adjustment
B. The fairing is sealed to keep out all fuel and water. To replace the lamp, you remove the logo light. While the light is removed, you can do a visual check of the inner side of the fairing. If you see fuel stains or water stains, then seal the leak. Refer to "Seals and Sealing" (AMM 51-31-00/201).
TASK 33-49-00-962-038
2. Logo Light - Lamp Replacement (Fig. 201)_____________________________
A. Consumable Materials
(1)
A00247 Sealant, BMS 5-95 (Usual)
(2)
A00777 Compound - Electrical Insulating Coating, DC 3145 (Alternative)
(3)
A00778 Compound - Electrical Insulating Coating, GE 162 (Alternative)
(4)
D00455 Lubricant - Antiseize Compound, G-661
B. References
(1)
AMM 24-22-00/201, Manual Control
(2)
SSM 33-40-02
(3)
WDM 33-49-01
C. Access
(1) Location Zone
301 Left Wing Tip
401 Right Wing Tip
D. Lamp Replacement
S 862-040
(1) Do one of these steps to remove electrical power from the logo light:
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