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OIL-SYNTHETIC 3534980 - Caterpillar



3534980 OIL-SYNTHETIC Caterpillar parts OIL
Rating:
26
Alternative (cross code) number:
CA3534980
353-4980
3534980
Caterpillar 3534980 OIL-SYNTHETIC
Weight: 7 pounds 3 kg.

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Illustration 1 g03891236
One-Way Flow from Two Pumps
(1) Tool line relief valves
(2) Attachment control valve
(4) Tool relief valve
(5) Attachment control valve
(9) Proportional reducing valve (Flow limit 2)
(10) Proportional reducing valve (Flow limit 1)
(13) Pilot pump
(14) Drive pump
(15) Idler pump
(22) Proportional reducing valve (A2 extend)
(23) Proportional reducing valve (A1 extend) 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 g03890994
One-Way Flow from One Pump (idler pump)
(1) Tool line relief valves
(2) Attachment control valve
(3) Hydraulic oil cooler
(4) Tool relief valve
(5) Attachment control valve
(9) Proportional reducing valve (Flow limit 2)
(10) Proportional reducing valve (Flow limit 1)
(13) Pilot pump
(14) Drive pump
(15) Idler pump
(23) Proportional reducing valve (A1 extend) The following description is made under the assumption that the drive pump is supplying oil to the work tool.When the device for activation listed in Table 1 is pressed, the machine ECM sends a modulated signal to proportional reducing valve (23). Proportional reducing valve (23) allows pilot oil to flow to attachment control valve (2). Attachment control valve (2) shifts, allowing high-pressure oil from the drive pump to flow to the work tool.When abnormally high pressure occurs in the line to the work tool, tool relief valve (4) opens at a set pressure. This opening will allow the high-pressure oil into the return system and back to the hydraulic tank.Oil returning from the work tool flows through the oil cooler and back to the hydraulic tank.During the operation of the work tool, the oil flow for the drive pump is controlled by flow limit valve (9) and the machine ECM. Since attachment control valve (5) does not shift, the idler pump is controlled by


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