320C Excavator Hydraulic System ANB1-Up (Machine) BCB1-Up (Machine) Each pump is tested individually for an output flow rate at a specified delivery pressure and a specified negative flow control pressure. 42 Hydraulic System Testing and Adjusting Section.
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Material Caterpillar 320b 330b Hydraulic Excavators Pilot System Components Diagrams Schematics. 04IMPL. CAT 320C Sistema Eletrico. Curso Cat 320-330B Sistema STMG 1. CAT Diagrama Hidraaulico 320D. HIDRAULIC 320C. 320 B Hydraulic. 320B, 322B and 325B Excavators-Maintenance Intervals. 320B Excavator Electrical System.
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Jul 14, 2020 · Cadman, K. Electro-Hydraulic System with Negative Flow Control. U.S. Patent Application 20180087540, Based on the analysis of the working mechanism of positive control system of excavator, a
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Hydraulic schematic 320c PAB.pdf - VSIP.INFO
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Specalog for 320C 320C L Hydraulic Excavator, AEHQ9051
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Specalog for 320C 320C L Hydraulic Excavator, AEHQ9051
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1535295 valve group-priority (negative flow) excavator caterpillar 320c l 320c l excavator eag00001-up (machine) powered by 3066 engine hydraulic system 1535295 valve group-priority (negative flow) 153-5295 valve gp-priority -swing s/n eag1 …
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The invention discloses a positive flow and negative flow universal hydraulic system of an excavator, and belongs to the field of engineering machinery. According to the technical scheme, the positive flow and negative flow universal hydraulic system of the excavator is characterized by comprising a pilot control device, a main valve assembly, an execution mechanism and a …
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320DL 320C Hydurlic Excavator Used Cat Excavator for sale. Qingdao Chary Machinery CO., LTD Call: +86 150 5328 9929 World famous brands imported hydraulic components, constant power, the electric proportional control of the double pump double negative flow hydraulic system, the system is stable and reliable;
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2448483 pump group-main hydraulic excavator caterpillar 320c l 320c l excavator eag00001-up (machine) powered by 3066 engine hydraulic system 2448483 pump group-main hydraulic . 244-8483 pump gp-main hydraulic s/n eag1-up part of 162-6176 pump & …
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Nov 21, 1997 · Negative flow control systems rely on the exhausted flow in the system to control the flow rate from the pump. These types of systems still permit a large amount of fluid flow to return to the reservoir as the open-centered control valve is being moved to an actuated position.
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Mar 14, 2002 · The 325C L uses the proven open-center, two-pump, negative flow hydraulic system. Increased engine power allows increased hydraulic flow of 10 percent when compared to the previous model. Increased flow works with the hydraulic cross-sensing system to boost productivity through faster implement speeds and quicker, stronger pivot turns.
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During negative flow control, negative flow control pressure (PN) from line (44) enters piston chamber (65). The right end of control piston (43) is pressurized. Control piston (43) acts on spool (41) in order to control the output flow of the pump.
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A negative control type hydraulic system is provided, in which the use of a pilot pump and a load pressure generator between a hydraulic pump and a control valve is not required to prevent a power loss. The negative control type hydraulic system includes an engine; at least one variable-displacement hydraulic pump connected to the engine; at least one hydraulic actuator …
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The hydraulic horsepower is approximately identical to the engine horsepower. When no work is being performed, pump oil flows through main control valve (12) and into hydraulic tank (40). The main control valve sends a negative flow control signal to each main pump regulator in order to destroke the pump to the minimum output flow.
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All brand new excavator main hydraulic pumps from His Way Manufacturing undergo a four-stage outlet pressure & flow rate test. All pumps are tested beyond OE
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