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 TM 55-1925-273-10-1
0045 00
Table 18. Pump Drive Engine (refer to figure 18)
Key
Control/Indicator
Function
1
Hand Throttle
The hand throttle permits local control of the engine's operating speed.
2
Lube Oil Pressure Gauge
This gauge indicates the engine lube oil pressure.
3
The tachometer indicates the engine speed.
4
Coolant Temperature Gauge
This gauge indicates the engine coolant temperature.
5
Emergency Stop Pushbutton
This pushbutton is used to STOP the engine in an emergency.
6
Circuit Breaker
The circuit breaker provides circuit protection for the engine's control panel.
7
Switch Gauge
This gauge indicates the engine coolant level in the pump drive engine
expansion tank.
8
ON/OFF/START Switch
This switch permits local starting and stopping of the engine.
9
Filter Restriction Gauge
This gauge indicates the level of restriction in the fuel filter/water
separators.
10
Discharge Valve
This valve is used to control the flow of fuel oil from the fuel filter/water
separators to the engine, and it permits a single fuel filter/water separator
to be taken offline for service while the engine is operating.
11
Supply Valve
This valve is used to control the flow of fuel oil into the fuel filter/water
separators from the day tank, and it permits a single fuel filter/water
separator to be taken offline for service while the engine is operating.
12
Drain Cock
The drain cock permits water and sediment to be drained from the fuel filter/
water separator collection bowl.
13
Hand Priming Pump
This pump is used to prime the engine's fuel system.
14
Fuel Oil Supply Valve
This valve controls the flow of fuel oil from the day tank to the engine's fuel
system.
15
Fuel Pressure Gauge
This gauge indicates the discharge pressure of the fuel transfer pump.
16
Engine Start Valve
This valve starts the pump drive engine when pushed.
17
PTO Lever
This lever is used to engage and disengage the Power Take-Off (PTO) that
drives the diesel engine-driven fire pump.
18
Temperature Gauge
This gauge indicates the temperature of the raw water discharged from the
engine's heat exchanger.
19
Cutoff Valve,
This valve secures the flow of engine coolant through the jacket water heater.
Jacket Water Heater
20
Asw-19, S.W. TO PUMP
This valve secures the flow of raw water into the engine.
DRIVE ENG Valve
21
Cutoff Valve,
This valve secures the flow of raw water from the engine.
Raw Water Discharge
22
Asw-20, S.W. FR PUMP DRIVE
This valve secures the flow of raw water from the engine.
ENG. TO OVB'D DISCHARGE
Valve
0045 00-25
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