VALVE & LINKAGE GP 3483301 - Caterpillar

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(1) Indicator for AEC mode (2) Key for AEC modeThe modes for the automatic engine speed control can be selected by pressing key (2). The indicator for AEC mode (1) will change in order to correspond to the current setting.
Mode I for Automatic Engine Speed Control - If the engine speed dial is between 5 and 10 and the machine is inactive for three seconds or more the engine speed is reduced by 100 rpm.
Mode II for Automatic Engine Speed Control - If the engine speed dial is between 5 and 10 and the machine is inactive for three seconds or more the engine speed is reduced to 1300 rpm. The engine speed will not be affected if the engine speed is below 1300 rpm.
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The switch for manual low idle is on the right joystick.Manual Low Idle - Activate the manual low idle in order to reduce the engine speed to approximately 1000 rpm. Pressing the switch again will allow the engine speed to return to the original setting of the engine speed dial.The manual low idle allows the operator to easily reduce the rpm without touching the engine speed dial. This is useful when the operator wants to reduce the engine speed in order to talk to someone or while the operator is waiting for a truck.