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 TM 55-1925-273-10-1
0045 00
Table 16. Bow Thruster Drive Engine (refer to figure 16)
Key
Control/Indicator
Function
1
Oil Pressure Gauge
This gauge indicates the bow thruster engine's lube oil pressure.
2
The tachometer indicates the bow thruster engine's speed.
3
Coolant Temperature Gauge
This gauge indicates the bow thruster engine's coolant temperature.
4
Switch Gauge
This gauge indicates the engine coolant level in the bow thruster engine
expansion tank.
5
Filter Restriction Gauge
This gauge indicates the level of restriction in the fuel filter/water
separators.
6
Discharge Valve
This valve controls the flow of fuel oil from the fuel filter/water separators
to the engine. It permits a single fuel filter/water separator to be taken offline
for service while the engine is operating.
7
Supply Valve
This valve controls the flow of fuel oil into the fuel filter/water separators
from the day tank. It permits a single fuel filter/water separator to be taken
offline for service while the engine is operating.
8
Drain Cock
The drain cock permits water and sediment to be drained from the fuel filter/
water separator collection bowl.
9
Fuel Oil Supply Valve
This valve controls the flow of fuel oil from the day tank to the engine's fuel
system.
10
Hand Priming Pump
This pump is used to prime the engine's fuel system.
11
ON/OFF/START Switch
This swtch is used to locally start the bow thruster engine.
12
Circuit Breaker
This circuit breaker provides circuit protection for the bow thruster engine
13
Emergency Stop Pushbutton
Push this button IN to stop the bow thruster engine in an emergency.
14
Fuel Pressure Gauge
This gauge indicates the discharge pressure of the fuel transfer pump.
15
Dipstick, Marine Gear
This dipstick indicates the lube/operating oil level in the marine gear.
16
Temperature Gauge
This gauge indicates the temperature of the raw water discharged from the
engine's heat exchanger.
17
Cutoff Valve, Crankcase Vent
This valve secures the crankcase vent flow.
18
Cutoff Valve, Jacket
This valve secures the flow of engine coolant through the jacket water heater.
Water Heater
19
Dipstick, Engine
This dipstick indicates the lube oil level in the engine sump.
20
Asw-21 S.W. FR. BOW
This valve secures the flow of raw water from the engine.
THRUSTER ENG. TO OVB'D
DISCHARGE
0045 00-22
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