ELBOW 6P4928 - Caterpillar

Shutoffs
The shutoffs are electrically operated or mechanically operated. The electrically operated shutoffs are controlled by the ECM.Shutoffs are set at critical levels for the following items:
Operating temperature
Operating pressure
Operating level
Operating rpmThe particular shutoff may need to be reset before the engine will start.
Always determine the cause of the engine shutdown. Make necessary repairs before attempting to restart the engine.
Be familiar with the following items:
Types and locations of shutoff
Conditions which cause each shutoff to function
The resetting procedure that is required to restart the engineAlarms
The alarms are electrically operated. The operation of the alarms are controlled by the ECM.The alarm is operated by a sensor or by a switch. When the sensor or the switch is activated a signal is sent to the ECM. An event code is created by the ECM. The ECM will send a signal in order to illuminate the lamp.Your engine may be equipped with the following sensors or switches:Coolant level - The low coolant level switch indicates when the coolant level is low.Coolant temperature - The coolant temperature sensor indicates high jacket water coolant temperature.Intake manifold air temperature - The intake manifold air temperature sensor indicates high intake air temperature.Intake manifold pressure - The intake manifold pressure sensor checks the rated pressure in the engine manifold. Fuel rail pressure - The fuel rail pressure sensor checks for high pressure or low pressure in the fuel rail.Engine oil pressure - The engine oil pressure sensor indicates when oil pressure drops below rated system pressure, at a set engine speed.Engine overspeed - The primary speed/timing sensor checks the engine speed. The alarm is activated at 3000 RPM.Air filter restriction - The switch checks the air filter when the engine is operating.User defined switch - This switch can shut down the engine remotely.Water in fuel switch - This switch checks for water in the primary fuel filter when the engine is operating.Note: The sensing element of the coolant temperature switch must be submerged in coolant in order to operate.Engines may be equipped with alarms in order to alert the operator when undesirable operating conditions occur.
When an alarm is activated, corrective measures must be taken before the situation becomes an emergency in order to avoid possible engine damage.
If corrective measures are not taken within a reasonable time, engine damage could result. The alarm will continue until the condition is corrected. The alarm may need to be reset.Testing
Turning the keyswitch to the ON position will check the indicator lights on the control panel. All the indicator lights will be illuminated for two seconds after the keyswitch is operated. Replace suspect bulbs immediately.Refer to Troubleshooting for more information.