HOSE 3027347 - Caterpillar

Selection Of A Tool
There are five preprogrammed tools. The operator selects the tool. The monitor is used to make the selection. The following items are examples of some parameters which can be adjusted in order to accommodate a particular tool:
Setting of the engine speed dial
Pump flow for one or two pumps
Pump flow for one or two directions
The setting of the horsepower for the attachment pump.Engine Speed Control
When the pedal is operated, the actual setting of the engine speed dial is compared to the position of the engine speed dial that was set by the parameter. The engine speed control will lower the engine speed to the selected engine speed that was set in the adjustable parameter. When the tool is deactivated, the speed of the engine will return to the actual speed of the setting of the engine speed dial. When the attachment tool is being operated, the AEC and the one touch low idle are released. If the programmed value is higher than the engine speed dial indicator, the engine speed will not be raised.Main Pump Flow Control
Some tools use the flow of the main pump. A pressure switch detects the pressure change. A proportional reducing valve restricts the main pump flow. A resolver valve selects the higher pressure between the pressure in the control valve and the pressure from the proportional reducing valve. This signal restricts the pump flow to a lower pressure. The main pump flow is then reduced.This process results in better simultaneous operation of the tool and operation of the implement.Note: A "System 5" Tool Control does not have a proportional reducing valve.Main Pump Control During Use Of The Auxiliary Pump
Note: A "System 14 "Tool Control is the only system that uses an auxiliary pump.The controller detects an attachment pump section. This offsets the load of the attachment pump. This process also prevents a decrease of the engine speed. If an attachment pump is operated with 30 percent of the rated load and the main pumps are operated at the same time, a reduction in engine speed is prevented.