COVER-VALVE MECH 1502557 - Caterpillar

The following controls and indicators may be remote or panel mounted and are provided for the engine by Caterpillar. For additional controls and indicators, refer to the locomotive OEM manual.Gauges
Your engine may not be equipped with the same or all of the gauges as shown in the illustrations. The illustrations shown are of typical gauges and are optional.Gauges provide a "look" inside the engine. Be sure they are in good working order. You can determine what is the "normal" operating range by observing the gauges over a period of time.Noticeable changes in gauge readings are indicative of potential gauge or engine problems. This also applies to gauge readings that have changed significantly but are still within specifications. The cause of any sudden or significant change in readings should be determined and corrected. Contact your Caterpillar dealer for assistance as needed. Tachometer - Indicates engine rpm. When the governor control (notch) lever is moved to the FULL SPEED (highest notch) position without load, the engine is running at high idle.The engine can be operated at this speed for long periods of time without shortening engine life. Engine Jacket Water Temperature - Indicates engine jacket water (high temperature) outlet temperature. The water temperature reading may vary according to load, but should never exceed the boiling temperature for the pressurized system with a maximum of 93°C (200°F). Engine jacket water temperature range is 80 to 93°C (175 to 200°F) and inlet controlled to 85°C (185°F). Engine Oil Pressure - Indicates engine oil pressure. The pressure reading will be greatest after starting a cold engine. Oil pressure will decrease as the engine warms while idling. As the engine speed is increased to full load speed, oil pressure will increase and stabilize. Minimum engine oil pressure is 160 kPa (23 psi) at low speed and at operating temperature, and 320 kPa (46 psi) at speeds above 650 rpm. Clock (Service) Hour Meter - Indicates the actual time in clock hours that the engine is running. Engine Oil Temperature - Indicates engine oil temperature after it has passed through the oil cooler. The oil cooler is thermostatically controlled and transfers the heat in the oil to the engine jacket water to maintain engine oil temperature at 85°C (185°F).If the cooling system cannot remove the necessary heat from the water, the engine oil cannot be properly cooled. Higher than normal oil temperature (85°C [185°F]) indicates a problem has occurred in the lubrication and/or cooling system, and cylinder heads, liners, pistons or bearings can be damaged. Fuel Pressure - Indicates pressure of the filtered fuel. As the fuel filter becomes plugged, there will be a noticeable reduction in the engine's performance. The fuel pressure range is 260 to 690 kPa (38 to 100 psi). Inlet Air Temperature - Measured after the aftercooler. Indicates inlet manifold air temperature. As the inlet air increases in temperature, the air expands, less oxygen is available to the cylinders, therefore less power is developed. As a result, at full governor position