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Who turned out the lights?

Just because you can use the PANEL LIGHTS knob to completely dim the lights on the commander's panel of your M1A1 tank doesn't mean you should. In fact, you definitely shouldn't.

Dimming those lights completely is a real safety hazard, especially when it comes to the warning lights.

One crew learned that lesson the hard way when the NBC filter on their tank caught .re after the air cycle turbine failed. The crew reported that the NBC OVERHEAT SPONSON OUT light didn't provide any warning. It turned out that the warning light was working but had been completely dimmed.

So follow the information on Page 2-301 of TM 9-2350-264-10-1 (Mar 02 w/Ch 4, Dec 07). It tells you how to test the panel lights and adjust the PANEL LIGHTS knob so the lights are dimmed but still readable. Never dim them completely.

[ILLUSTRATION OMITTED]

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Title Annotation:M1A1 Tank ...
Publication:PS, the Preventive Maintenance Monthly
Article Type:Brief article
Geographic Code:1USA
Date:Apr 1, 2009
Words:145
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