TM 10-5410-228-10
3.11.3 Pushbutton Switch Assembly Lamp Replacement.
This task covers:
a. Removal
b. Installation
INITIAL SETUP
Tools/Test Equipment:
Equipment Conditions:
Extraction Tool (Item 7, Appendix B, Section III)
System power OFF.
ECV parking brake set.
Materials/Parts:
Lamp (96906) MS3338-6839
Do not install indicator unit without all four lamps installed or short circuit will occur when
power is applied.
Exercise care when pulling indicator unit from switch housing. Nylon lanyard attaching
indicator unit to switch housing is not very long and easily broken.
a. Removal
(1)
Using extraction tool, carefully squeeze tabs (1) and pry indicator unit (2) from switch housing
(3).
(2)
Using extraction tool, remove one to four lamps (4) from the back of the indicator unit (2).
b. Installation
(1)
Using extraction tool, install one to four lamps (4) on the back of the indicator unit (2).
(2)
Carefully squeeze tabs (1) and install indicator unit (2) into switch housing (3), ensuring that
the aligning pin engages hole in switch housing (3).
Figure 3-3. Pushbutton Switch Assembly Replacement
Follow-on maintenance: Turn on switch/indicator to ensure lamps are working properly.
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