SEAL-O-RING 0951602 - Caterpillar

Note: This glossary contains definitions of terminology for all of Caterpillar On-Highway Truck Engines. Some of the terms are only applicable to certain engines.A/C High Pressure Switch - The A/C high pressure switch senses refrigerant pressure in the air conditioning system. The A/C high pressure switch opens the electrical contacts and the A/C high pressure switch closes the electrical contacts. The opening and closing of the electrical contacts depends on the pressure in the system. The electrical contacts control the cooling fan. This switch may be connected to the ECM in some applications.Accelerator Pedal Position - The accelerator pedal position is the interpretation by the ECM of the signal from the accelerator pedal position sensor.Accelerator Pedal Position Sensor - The accelerator pedal position sensor is an electronic sensor that is connected to the accelerator pedal. The accelerator pedal position sensor sends a Pulse Width Modulated signal to the ECM.Active Diagnostic Code - An active diagnostic code describes a condition that is currently present in order to alert the driver or the service technician of an abnormal parameter of engine operation. Refer to a Diagnostic Fault Code.Aftermarket Device - An aftermarket device is a device or an accessory that is installed by the customer after the vehicle is delivered.Air-To-Air Aftercooler - An air-to-air aftercooler is a device that is used on turbocharged engines in order to cool inlet air that has undergone compression. The inlet air is cooled after the inlet air passes through the turbocharger. The inlet air is passed through an aftercooler (heat exchanger) that uses ambient air for cooling. The inlet air that has been cooled advances to the inlet manifold.Alternating Current (AC) - Alternating current is an electric current that reverses direction at a regular interval that is reoccurring.American Wire Gauge (AWG) - AWG is a measure of the diameter of electrical wire. AWG is also a measure of the current carrying capacity of electrical wire. When the AWG number is smaller, the diameter of the wire is larger. When the AWG number is larger, the diameter of the wire is smaller.Analog Sensors - Analog sensors produce a DC output signal. The sensors detect changes in temperature or pressure. The change is converted by the sensor to an electrical signal.Analog Sensor Return - The common line (ground) for the analog sensor from the ECM is used as a ground for the analog sensors.Analog Sensor Supply - The ECM supplies power to the analog sensors and the power supply is +5 VDC.Anti-Lock Brake System (ABS) - An anti-lock brake system is a brake system that attempts to reduce a skid during brake operation. A power train electronic control can turn off the engine retarder, if necessary. Also, a power train electronic control can signal the engine ECM to deactivate the engine retarder.ATA Data Link (American Trucking Association) - The ATA data link is a two wire electrical connection for communication with other microprocessor based devices. These devices are compatible with Standards for the American Trucking Association