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 TM 55-1925-273-10-1
0041 00
Table 2. Main Engine 1, General Arrangement (refer to figure 2) (continued)
Key
Control/Indicator
Function
26
Cutoff Valves
These valves secure the pressure to the oil filter differential pressure gauge.
27
Differential Pressure Gauge,
This gauge indicates the differential pressure across the oil filter.
Oil Filter
28
Sight Glass
The sight glass indicates the engine coolant level in the expansion tank. See
figure 5 for details.
29
Hand Pump, Fuel Priming
The hand pump is used for priming the fuel system.
30
Lube Oil Temperature Gauge
This gauge indicates the temperature of main engine 1's lubricating oil.
31
Cutoff Valve, Jacket Water
This valve secures the flow of engine coolant from the jacket water heater to
Heater Vent
the expansion tank.
32
Governor
The governor controls main engine 1's speed. See figure 8 for details.
33
Overspeed Trip Lever
In an overspeed condition, the lever moves into the tripped position and
secures fuel flow to the combustion chambers, stopping the engine.
See figure 7 for details.
34
Pressure Gauge, Starboard
This gauge indicates the jacket water pressure in main engine 1's starboard
Water Jacket
water jacket.
35
CA-9 STG AIR TO ME #1
This cutoff valve secures the compressed air supply to main engine 1's
starting system.
36
Fuel Filter Selector Valve
This valve permits either one or both fuel filters to supply the main engine's
fuel system. See figure 6 for details.
37
Starting Air Regulator
This regulates the starting air pressure to the starting motors.
38
De-7, BOW THRUSTER
This valve drains the condensate from the bow thruster engine's exhaust
ENG. EXH. DR. valve
system when OPEN.
39
Turbocharger Prelube Oil
This gauge indicates the lube oil pressure supplied to the turbocharger by
Pressure Gauge
the turbocharger prelube oil pump.
40
De-5, S.S.D.G. No. 1 EXH.
This valve drains the condensate from SSDG 1's exhaust system when OPEN.
DR. valve
41
Cutoff Valve, Starting Air
This valve secures the pressure to the starting air remote sensor for main
Remote Sensor
engine 1.
42
De-3, M.E. No. 1. EXH. DR.
This valve drains condensation from main engine 1's exhaust when OPEN.
Valve
43
Starting Air Valve
This valve controls the flow of starting air in the engine's starters.
44
Pressure Gauge, Lube
This gauge indicates lube oil pressure at the cam gear case.
Oil Pressure
45
Dipstick
The dipstick indicates the oil level for reduction gear 1.
0041 00-5
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