TM-9-2320-285-24-1
TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1
TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1985
TM-9-2320-285-24-1 - Page 18 of 987
TM 9-2320-285-24-1
11-20. ELECTRICAL SYSTEM (CONT)
a.
Instrument Panel Indicators.
1.
TRANS/TORQUE CONVERTER LIGHT.
Indicates red when transmission fluid temperature is too hot for normal
operation; electrically connected to transmission temperature sender located at transmission, right hand side.
2.
HIGH BEAM LIGHT.
Indicates red when headlights are on high beam.
3.
LOW FUEL INDICATOR.
Indicates red when fuel level is too low for operation on 30% grades or side slopes of
10%; electrically connected to fuel level sender located in fuel tank and circuit board mounted behind front instrument
panel.
4.
WATER LEVEL WARNING LIGHT.
Indicates red with drop in engine coolant; electrically connected to water level
sensor mounted at engine rear.
5.
WATER TEMP WARNING LIGHT.
Indicates red with overheating of engine coolant; electrically connected to
water temperature alarmstat located at front of engine, right hand side.
6.
OIL PRESSURE WARNING LIGHT.
Indicates red when engine lubricating oil pressure is too low for safe
operation; electrically connected to oil pressure sensor located at engine, left hand side.
7.
LOW AIR WARNING LIGHT.
Indicates red, and buzzer sounds, when air system pressure is too low for safe
operation; electrically connected to low air pressure switch, located under right instrument panel.
8.
WARNING BELL.
Sounds when WATER LEVEL, WATER TEMP, or OIL PRESSURE warning lamps light.
9.
24V INVERTER LIGHT.
Indicates red when 24V INVERTER switch is turned to on position.
b.
Instrument Panel Switches and Gage Lights.
1-9
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