TRACK GP- 5703234 - Caterpillar

Illustration 1 g03870026
One-Way / One or Two Pump - Electronic Control
(3) Proportional reducing valve (A2 extend)
(4) Proportional reducing valve (A1 extend)
(6) Stick cylinder
(7) Boom cylinders
(8) Tool relief valve
(10) F2 stack valve
(11) Tool line relief valve
(12) Tool line relief valve
(13) Attachment 2 (F2 stack valve)
(14) Stick 1 control valve
(15) Center bypass passage (idler pump)
(16) Main relief valve
(17) Main control valve
(18) Center bypass passage (drive pump)
(19) Boom 1 control valve
(20) Pump 2 pressure sensor
(21) Pump 1 pressure sensor
(22) Boom 2 control valve
(23) Attachment 1 control valve
(24) Stick 2 control valve
(25) Negative flow control valve
(26) Negative flow control valve
(27) Pilot control valve (swing and stick)
(28) Pilot control valve (boom and bucket)
(29) Boom DOWN control pressure sensor
(30) Boom UP control pressure sensor
(31) Stick OUT control pressure sensor
(32) Stick IN control pressure sensor
(33) Pilot manifold
(34) Pilot valve
(35) Hydraulic activation control solenoid
(36) Hydraulic tank
(37) Pilot relief valve
(38) Idler pump
(39) Drive pump
(40) Pilot pump
(41) Proportional reducing valve (Flow limit 2)
(42) Proportional reducing valve (Flow limit 1)
(43) Flow limit 1 pressure sensor
(44) Flow limit 2 pressure sensor One-Way / One or Two Pump with electronic control is designed to allow complete electronic control over the work tool. This hydraulic system allows the operator to control a work tool with a one-way flow system with from one pump or two pumps.One-Way Flow from One Pump
One-way flow from one pump can be achieved by selecting a work tool that requires one-way flow from one pump. The work tool can be selected through the monitor or by the work tool select switch. A typical example is a hammer that receives oil from one pump only.When one pump flow is required to the work tool, the pump supplying the oil can be programmed through the monitor. The following situations are listed to increase controllability of the work tool.
When the work tool with a boom and bucket operation is used most often, the idler pump is recommended as the supply pump.
When the work tool with a stick and swing operation is used most often, the drive pump is recommended as the supply pump.Reference: Refer to Testing and Adjusting, "Work Tool Parameter - Program" for the tool control system to change the settings for work tool operation.Reference: Refer to Testing and Adjusting, "One-Way / One or Two Pumps - Electric Control: Default Value of Work Tool Parameters" for the Tool Control System to reference the factory settings.
Table 1
Operation Lever List
Control Extension
Right joystick thumb wheel Push Forward
Electric foot pedal Push Forward
Electric foot switch Push ON
Illustration 2 g03870814
One-Way Flow from One Pump (drive pump)
(4) Proportional reducing valve (A1 extend)
(8) Tool relief valve
(10) F2 stack valve
(11) Tool line relief valve
(13) Attachment 2 (F2 stack valve)
(17) Main control valve
(18) Center bypass passage (drive pump)
(23) Attachment 1 control valve
(36) Hydraulic tank
(38) Idler pump
(39) Drive pump
(40) Pilot pump
(42) Proportional reducing valve (Flow limit 1)
(43) Flow limit 1 pressure sensor The following description is made under the assumption that the drive pump (39) is supplying oil to the work tool.When the device for activation listed in Table 1 is pressed, the