Hitachi Excavator Parts ZX450 ZX460 ZX450-1 Main Pump Control Unit Hydraulic Controller ECU ECM X9233055 4428516 X4428516 3550-202163

Hitachi Excavator Parts ZX450 ZX460 ZX450-1 Main Pump Control Unit Hydraulic Controller ECU ECM X9233055 4428516 X4428516 3550-202163

Controller damage generally has the following situations:

1). The generator malfunctions, causing high voltage in the circuit.

2). The battery is connected in series when the user starts the engine.

3). Unauthorized connection of electrical appliances will increase the electrical load and burn out due to excessive current.

4). The generator regulator fails, causing the generator to generate too much power.

5). The battery positive and negative poles are connected wrongly, the wiring harness is aging, and the short ground is poor.

6). Do not repair according to operating specifications, plug and unplug the ECM with power on.

7). The excavator cuts the cable and suffers an external high voltage electric shock.

8). Misuse of fuses with large capacity.

9). Water enters the controller, causing a short circuit.

10). Incorrect wiring or improper plugging of the controller.

1. Function description

1). It is possible to replace the throttle controller of excavator brands that use DC motors (such as Daewoo, Hyundai, Xugong, Liugong, Lonking, Sunward Intelligent, Xiagong, Foton Lovol, Sany, etc.). The electronic throttle function and the hydraulic board are on the same controller. If the throttle part is damaged, you can also put in a universal throttle board to replace the electronic throttle function).

2). Peripheral wiring as shown in the figure above, requires an external power supply, 2 pressure switches, throttle knob potentiometer, throttle motor, and steering sensor. You can have electronic throttle function by wiring as shown above.

3). The throttle can be added or subtracted by the throttle knob. After turning on the automatic idle switch, if the steering is above about 1200 rpm, the automatic idle speed adjustment will be performed after 5 seconds. When one of the conditions of the pressure switch, automatic idle switch, and throttle knob changes, it will exit automatic Idle speed to the position set by the throttle knob.

4). Different engines have different flywheel teeth, so the reverse signal detection will be different.

5). The pressure switch is a normally open type. That is, when the pressure switch is pointing, it is a necessary condition for automatic idle speed. When the pressure switch is turned on, it will exit the automatic idle speed when it is grounded.

6). The calibration sensor connection only needs to be parallel, that is, there is no need to overlap the original car line, only need to peel off the original car calibration sensor harness and parallel the two wires.

If you need more information, feel free to contact Nela

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GuanGzhou Huihai Engineering Machinery Co., Ltd.

We have 10 years of experience in the field of excavator parts and are a professional supplier of mechanical components such as excavators, bulldozers, loaders, and leveling machines. One stop shop for purchasing heavy equipment. We mainly sell CAT, Komatsu, Cummins and other models. The main products are as follows: hydraulic accessories: hydraulic pumps, valves, travel motors, rotary motors, and rotary gearboxes. Engine accessories: cylinder head, cylinder block, turbocharger, piston, crankshaft, oil pump, fuel injector, AC generator, starter motor, etc. All employees adhere to the belief of "striving for excellence", and with the support of customers, the company has developed rapidly. Our products sell well in countries and regions such as the United States, Southeast Asia, the Middle East, Africa, and Europe.