GEAR (19 TEETH) 8K5999 - Caterpillar

Glossary Of Terms
Active Diagnostic CodeDescribes a condition that is currently present to alert the operator or service technician of an abnormal engine operation parameter. Refer to Diagnostic Fault Code.Aftermarket DeviceAs used here, a device or accessory installed by the customer or vessel OEM after the engine is delivered.Air To Air Aftercooler (ATAAC)A means of cooling inlet air after the turbocharger, using ambient air for cooling. The inlet air is passed through an aftercooler (heat exchanger) mounted in front of the radiator before going to the inlet manifold.American Wire Gauge (AWG)A measure of the diameter (and therefore the current carrying ability) of electrical wire. The smaller the AWG number, the larger the wire.Atmospheric Pressure SensorAnalog sensor generates a signal proportional to atmospheric (barometric) air pressure in the crankcase and sends a signal to the ECM.Boost Pressure SensorRefer to Turbocharger Compressor Outlet Pressure Sensor.Breakout T HarnessA test harness designed to connect into a machine or engine harness which allows normal circuit operation while providing a breakout or T to measure signals.Bypass CircuitA circuit, usually temporary, to substitute for an existing circuit, typically for test purposes.CalibrationAs used here, is an electronic adjustment of a sensor signal.CAT Data LinkA two wire electrical connection for communication with other microprocessor based devices such as EMS II. The Data Link is also the serial communication medium used for programming and troubleshooting with Caterpillar Electronic Service Tools.Caterpillar Engine MonitoringThe part of the Electronic Control Module that monitors Coolant Temperature, Filtered Fuel Pressure, Inlet Manifold Air Temperature and Coolant Level to alert the operator of detected problems. The Coolant Temperature, Inlet Manifold Air Temperature, and Filtered Fuel Pressure Sensors are supplied by Caterpillar and monitored by the ECM. The Coolant Level Sensor is vessel OEM installed, but still monitored by the ECM. Aftermarket engine monitoring systems do not interface with the Caterpillar Electronic Engine Control Module.CodeRefer to Diagnostic Fault Code.Cold ModeA mode of engine operation where the timing is retarded and the low idle may be raised for engine protection, reduced smoke emissions and faster warm up time.Component Identifier (CID)Two or three digit code which is assigned to each component to identify data via data link to ECM.Coolant Level SensorThis OEM installed sensor detects the absence/presence of coolant at the probe and sends a signal to the ECM.Coolant Temperature SensorThis sensor detects the engine coolant temperature for Cold Mode operation and Caterpillar Engine Monitoring (if Engine Monitoring is not programmed OFF).Customer Specified ParameterA parameter value that can be changed and whose value is set by the customer. Data LinkRefer to CAT Data Link.Desired RPMAn input to the electronic governor within the ECM. The electronic governor uses inputs from the Throttle Position Sensor, Engine Speed/Timing Sensor and Customer Parameters to determine "Desired RPM".Diagnostic Flash CodeThese codes are flashed out using the Diagnostic Lamp to indicate an electronic system malfunction or an event detected by the Electronic System.Diagnostic LampThe Diagnostic Lamp is used to warn the operator of the presence of an active diagnostic code.Direct Current (DC)The type of