SEE B
MOUNTING
BRACKET
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A 737-300/400/500MAINTENANCE MANUAL
WHITE STEADY POSITION LIGHT
(3 LOCATIONS)
WHITE STEADY POSITION LIGHT
Steady Position (Navigation) Lights
Figure 201 (Sheet 2)
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A
737-300/400/500MAINTENANCE MANUAL
(b) On the overhead panel, P5, set the switch to the off position and attach the DO-NOT-OPERATE tag.
S 012-017
(2) Get access to the colored light.
(a) Remove the screws that hold the access panel and remove the panel.
S 962-003
(3) Carefully replace the lamp.
(a) Loosen the captive retaining screws that hold the base of the colored light.
NOTE: Do not remove the retaining screws that hold the lens.
____
(b) Remove the base.
NOTE: Make sure you do not change the position of the index
____ pin in the base of the colored light.
(c)
Loosen the pressure nut by two turns.
(d)
Remove the lamp from the light socket.
(e)
Clean the lens with a clean dry soft cloth.
(f)
Install the new lamp in the light socket.
NOTE: Make sure the silver part of the lamp will point aft.
____
(g)
Tighten the pressure nut with your fingers.
(h)
Hold the base in its position with the index pin in the hole in the lens.
(i)
Tighten the base retaining screws.
WARNING: MAKE SURE YOU SEAL THE TERMINALS TO PREVENT AN EXPLOSION
_______ OF THE FUEL FUMES. AN EXPLOSION CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(j) If it is necessary, do this task for the electrical terminals of the colored light: "Seal the Open Terminals" (AMM 20-10-47/201).
D. Lamp Test
S 862-004
(1)
Supply electrical power (AMM 24-22-00/201).
S 862-005
(2)
Remove each DO-NOT-CLOSE or DO-NOT-OPERATE tag.
(a) Close each circuit breaker that was opened.
S 862-013
(3) Set the switch to the on position.
(a) Make sure the new lamp comes on correctly.
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737-300/400/500MAINTENANCE MANUAL
S 862-014
(4)
Set the switch to the off position.
S 412-008
(5)
Install the access panel with its screws.
TASK 33-43-11-962-016
3. White Steady Position Light - Lamp Replacement (Fig. 201)______________________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
SSM 33-40-03
(3)
WDM 33-00-01, Lamp Usage Chart
(4)
WDM 33-43-01
B. Access
(1) Location Zone
301 Left Wing Tip
401 Right Wing Tip
C. Lamp Replacement
S 862-015
(1) Do one of these steps to remove electrical power from the white 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.
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