S 032-007
(2) Remove the lens.
(a)
Remove the screws from the lens retainer.
(b)
Remove the lens retainer and the lens.
S 962-006
(3)
Carefully replace the lamp.
S 432-008
(4)
Install the lens.
(a) Clean the lens with a clean soft dry cloth.
NOTE: Replace the lens, if the lens has a crack with a depth
____ that is more than 50% of its thickness. Also replace the lens, if the damage on its surface causes a decrease lighting intensity.
(b)
Put the retainer around the edge of the lens.
(c)
Hold the lens against the base of the light and install the screws in the retainer.
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737-300/400/500MAINTENANCE MANUAL
D. Lamp Test
S 862-009
(1) Remove each DO-NOT-CLOSE or DO-NOT-OPERATE tag.
(a) Close each circuit breaker that was opened.
S 862-010
(2) Set the switch to the on position.
(a) Make sure the new lamp comes on correctly.
S 862-011
(3)
Set the switch to the off position.
S 862-012
(4)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
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737-300/400/500MAINTENANCE MANUAL
STEADY POSITION (NAVIGATION) LIGHTS - REMOVAL/INSTALLATION
__________________________________________________________
1. General_______
A. This procedure contains these tasks for the steady position light:
(1)
The removal of a red or green steady position light (referred to as a colored light).
(2)
The installation of a colored light.
(3)
The removal of a white steady position light (referred to as a white light).
(4)
The installation of a white light.
B. The colored lights are in each wingtip behind a window (Fig. 401). The wingtip is sealed to stop fuel fumes and water.
(1) To remove and install a colored light, you remove the access panel below the wingtip. You do not remove the window.
TASK 33-43-11-004-025
2. Colored Steady Position Light - Removal (Fig. 401)_______________________________________
A. Access
(1)
Location Zone
301 Left Wing Tip
401 Right Wing Tip
(2)
Access Panels
7176 Left Wingtip Access Panel
7576 Right Wingtip Access Panel
B. Procedure
S 864-028
(1) Do one of these steps to remove electrical power from the steady position light:
(a)
Open each applicable circuit breaker and attach the DO-NOT-CLOSE tag: 1) On the load control center panel, P18.
(b)
At the overhead panel, P5, set the switch to the off position and attach the DO-NOT-OPERATE tag.
S 014-024
(2) Get access to the colored light.
(a) Remove the screws that hold the access panel and remove the panel.
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COLORED STEADY POSITION LIGHTS (RED)
SEE A
WHITE STEADY
POSITION LIGHT
SEE C
WHITE STEADY COLORED STEADY
POSITION LIGHT
POSITION
LIGHTS (GREEN) SEE C WINDOW COLORED STEADY
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