TM 10-3930-641-10
DESCRIPTION AND USE OF OPERATOR CONTROLS AND INDICATORS - CONTINUED
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RIGHT-HAND INSTRUMENT PANEL - CONTINUED
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KEY
CONTROL OR INDICATOR
FUNCTION
28
Engine Oil Pressure Gauge
Indicates engine lubricating oil pressure:
RED LOW
WHITE NORMAL (Low Idle)
GREEN NORMAL (High Idle)
29
Indicates electrical charging system output voltage:
RED (21 volts or lower) Bad battery charge when engine RPM
is at low idle
BLACK AND WHITE (21 to 24 volts) below normal battery
charge when engine RPM is at low idle
BLACK AND GREEN (24 to 26 volts) normal battery charge
when engine RPM is at low idle
GREEN (26 to 30 volts) normal battery charge when engine RPM
is at high idle
RED (30 volts or higher) above-normal battery charge when
engine RPM is at high idle
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