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 TM 55-1905-223-24-18-1
Replace Sequential Timer.
2-47.
a. Removal, b. Replacement.
This task covers:
INITIAL SETUP
Equipment Condition
Tools
Electrical power turned OFF at
Tool kit, general mechanic's,
emergency lighting panel EL-102
and switch tagged "Out of Service -
T o o l kit, electrician's,
Do Not Operate."
Materials/Parts
Sequential timer, M411
Warning tags, Item 1, Appendix C
REMOVAL
Open front panel (1) of sequential timer (2).
a.
Tag and disconnect electrical leads from terminal board (4).
b.
Remove machine screws and lockwashers (4).
c.
Remove sequential timer.
d.
REPLACEMENT
Position sequential timer (2) and attach with machine screws and lockwashers
a.
(4).
Remove tags and connect electrical leads to terminal board (4).
b.
c.
Close front panel (1).
Remove tag and turn on electrical power at the emergency lighting panel.
d.
Change 1
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