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TM 10-4930-241-13
2-5. 600 GPM PUMP ASSEMBLY CONTROLS AND INDICATORS.
Refer to figure 2-5.
MASTER Switch (1).
Applies 24 vdc to electrical system. PULL switch to turn power ON. PUSH switch to turn power OFF.
FUEL HEAT Switch (2).
Fuel heat switch turns fuel heater on and off. Heating of engine fuel is required at temperatures below 100F.
ENGINE PUMPS Switch (3).
Switch is used to turn gear reducer oil pumps (2 each) and engine fuel pump on and off. Pumps must be on
before engine can be started.
START Switch (4).
Switch is used to start and run engine. To start and run engine, switch is set to START/RUN position, then
released to RUN for operation. Engine will stop when switch is set to STOP position.
PUMP CLUTCH Switch (5)
Switch is used to engage or disengage clutch in fuel pump. Engine must be running before clutch can be
engaged.
Panel Lights Switch (6).
Panel lights illuminate panel to facilitate operation and monitoring of pump.
LIGHTS Switch (7)
Turning switch to the right turns panel lights on and increases brightness of lamps. Turning switch to the left
decreases brightness of lamps and turns lights off.
BATTERY Gage (Ammeter) (8).
Ammeter indicates rate of current at which battery is being charged or discharged.
SUCTION Pressure Gage (9)
Indicates vacuum/pressure in psi at the fuel pump inlet port.
DISCHARGE Pressure Gage (10)
Indicates fuel pump outlet pressure in psi.
ENGINE OIL TEMP Light (11).
Engine Oil temperature light illuminates if engine oil temperature is high. With power on, PRESS TO TEST-light
illuminates.
ENGINE Light (12)
Engine light illuminates when engine malfunction occurs. With power on, PRESS TO TEST light illuminates.
Circuit Breakers (13).
The circuit breakers provide overcurrent protection to the electrical system.
CLUTCH DISENGAGED Light (14).
Light illuminates if the pump clutch is disengaged while the pump clutch switch is engaged.
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