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TM 9-4120-389-14
b. Removal.
(1) Tag and disconnect wire leads.
(2) Remove two screws and lockwashers from switch and switch bracket.
(3) Remove switch.
c. Test with switch at room temperature, use a multimeter set on lowest OHMS scale to check for
continuity between contacts 1 and 3. If continuity is not indicated between contacts, replace the switch.
d. Installation
(1) Align holes in switch with mounting hardware of switch bracket.
(2) Secure switch to bracket with two screws and lockwashers.
(3) See tags and wiring diagram (FO-1) and connect leads. Remove tags.
Follow-on procedure: Install top cover (See para. 4-14).
4-170
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