BODY AS-PISTON 8N3184 - Caterpillar

Note: The following symbols are used for installation with the Marine Monitoring System (MMS) only.Gauges provide indications of engine performance. Ensure that the gauges are in good working order. Determine the normal operating range by observing the gauges over a period of time.Noticeable changes in gauge readings can indicate potential gauge or engine problems. Problems may also be indicated by gauge readings that change even if the readings are within specifications. Determine and correct the cause of any significant change in the readings. Consult your Caterpillar dealer for assistance.Your engine may not have the same gauges or all of the gauges that are described. For more information about the gauge package, refer to the literature that is provided by the OEM of the vessel.
If no oil pressure is indicated, STOP the engine. The engine will be damaged from operating without oil pressure.
Engine Oil Pressure - This gauge indicates the pressure of the engine oil. The pressure will be highest after a cold engine is started. The pressure will decrease as the engine warms up. The pressure will increase when the engine rpm is increased. The pressure will stabilize when the engine rpm is stable. The typical pressure at low idle rpm is 172 kPa (25 psi). The typical pressure above 650 rpm is 448 kPa (65 psi).
Oil Filter Differential Pressure - This gauge indicates the difference in pressure between the inlet side and the outlet side of the engine oil filters. As the oil filter elements become plugged, the pressure will increase. Replace the engine oil filter elements when the oil filter differential pressure reaches 103 kPa (15 psi).
Engine Oil Temperature - This gauge indicates the engine oil temperature after the oil has passed through the oil cooler. The oil cooler is thermostatically controlled. The oil temperature is controlled by an 70 °C (158 °F) temperature regulator that is in contact with the oil. The pump for the aftercooler and the oil cooler pumps coolant for the engine oil.
Crankcase Pressure - This gauge indicates the pressure that is inside the crankcase. The typical pressure is 0.35 kPa (.051 psi). Changes in the pressure may indicate problems with the following components: crankcase breathers, pistons, piston rings and cylinder liners.
Aftercooler and Oil Cooler Water Temperature - This gauge indicates the temperature of the coolant at the inlet to the aftercooler and oil cooler circuit. The water temperature is regulated by water temperature regulators. If the cooling system cannot remove enough heat from the water, then the engine cannot be cooled properly. An oil temperature that exceeds the normal oil temperature may indicate that a problem has occurred in the lubrication system and/or the cooling system. Those problems may involve the following components: water temperature regulators, oil coolers, cylinder heads, cylinder liners, pistons and bearings.
Jacket Water Coolant Temperature - This gauge indicates the temperature of the engine coolant at the outlet for the jacket water. The temperature may vary according to the load. The temperature should never be allowed to exceed