BOLT,FLANGE 1041588 - Caterpillar

Using the One-Touch Low Idle Feature
The one-touch low idle feature will activate during all "stopped" conditions of the implement, swing, travel, and tools. However, when the "One-Touch Low Idle" switch is pressed, the control will lower the engine speed. The speed is reduced to a speed dial setting of 2 or approximately 1150 rpm. This control overrides the AEC.Release of the One-Touch Low Idle
The one-touch low idle switch will be released when any of the following conditions occur:
The one-touch low idle switch is pressed again.
The implement swing pressure sensor is set to the ON position.
A travel pressure switch is set to the ON position.
A pressure switch that is related to a tool is set to the ON position.
An increase in pump pressure sensed by the pump pressure sensors.The engine RPM is different after the switch has been released. The different speed will depend on the conditions of the release.
The engine RPM matches the engine speed dial setting when the one-touch low idle feature is released by operating an implement or tool.
The engine RPM is set by the AEC when the one-touch low idle switch is used to release the one-touch low idle function. The engine RPM will be affected by the following conditions:
When the AEC "Stage 1" is selected, engine RPM will be set to the AEC "Stage 1" setting. That setting is approximately 100 RPM lower than the current setting of the engine speed dial RPM.
When the AEC "Stage 2" is selected, engine RPM will be set to the AEC "Stage 1" setting. That setting is approximately 1150 RPM.
Engine RPM matches the RPM of current engine speed dial settings, when engine RPM is lower than the AEC "Stage 2" setting. The setting of this RPM is not based on a setting of the AEC function.Engine Speed Protection
Engine Idle Shutdown
Illustration 6 g02625436
(1) Machine ECM
(2) Monitor
(4) Engine ECM
(6) Pump 1 Pressure Sensor
(7) Pump 2 Pressure Sensor
(8) Implement Pressure Switch
(9) Swing Control Pressure Sensor
(10) One-Touch Low Idle Switch
(11) Key Switch
(12) Hydraulic Lock SolenoidThe Engine Idle Shutdown function stops the engine automatically when the machine has been idle for longer than the set time. Before the engine stops, a warning message will be displayed on the Messenger.Pump Torque Control
Illustration 7 g03865753
(1) Machine ECM
(2) Monitor
(5) Switch Panel
(6) Pump 1 Pressure Sensor
(7) Pump 2 Pressure Sensor
(13) Left Travel Pressure Switch
(14) Negative Flow Control 1 Pressure Sensor
(15) Negative Flow Control 2 Pressure Sensor
(16) Power Shift Pressure PRV
(17) Right Travel Pressure SwitchThe pump regulators are controlled by the negative flow control pressure and the power shift PRV. The machine ECM continually monitors various inputs. The machine ECM sends a pulse width modulated (PWM) driver to the power shift solenoid. Power shift solenoid controls the output flow of the pump by changing the hydraulic signal pressure that flows to the pump regulators.The machine ECM controls the PWM driver sent to the PRV and determines the required pump flow based off the following inputs.Desired engine speed - Determined by the engine speed dial.Actual engine speed - Determined by the