kubota tachometer not working

• 2022-06-08

Kubota is on fire. The tachometer doesn't work. What's the reason? The horn keeps sounding. Why does the tachometer of Kubota 161 excavator not display? The engine tachometer can display the real-time speed of the vehicle (or internal combustion engine) under the working state. Generally, the speed signal can be collected in two forms: The controller collects the real-time generator feedback voltage (AC voltage).

The controller collects the engine crankshaft speed signal (AC voltage), and finally the controller converts the signal into digital signal or pointer signal to display the real-time engine speed on the display.

If your car does not have the engine speed sensor, and you can confirm that the tachometer and the intermediate circuit are free of fault, you can use a multimeter to measure whether the AC voltage value of the generator speed signal terminal changes, and then you can confirm whether the generator needs to be replaced.

What happened when the computer of Kubota excavator did not display the rotating speed?

1.Check whether the speed sensor on Kubota excavator is normal?
2.Check the circuit from the instrument panel to the fuse box and fuse.
3.Check the circuit from the instrument panel to the fuse box and fuse.
4.Use an electrician multimeter to check whether the relevant circuits on the engine are normal.
5.Use an electrician multimeter to check whether the relevant circuits on the engine are normal.

The tachometer does not work for the following reasons:Failure of generator not generating electricity. The excitation circuit element is damaged or the circuit has open circuit, short circuit or grounding. Open circuit of generator stator winding or rotor winding. Loose wiring of generator outgoing line or poor contact of switch. The fuse is blown.

The standing battery shall be magnetized before power generation.Magnetize the winding with DC current larger than the rated current (for a short time), and the specific current is determined by the test.Replace the damaged components and repair the faulty circuit.Remove the sharp dirt on the contact surface, adjust the brush pressure, and fasten the brush holder. Correct the wiring and press the correct polarity for magnetization. Remove the sharp scale on the contact surface, grind the brush, and adjust the brush pressure so that the brush is in close contact with the slip ring. Check and repair the open circuit.Connect the connector or repair the contact part of the switch.Find out the cause of fusing, and replace the specified fuse after determining that the generator itself and the circuit are normal.

In fact, to prevent this kind of problem, we should always pay attention to whether there is any major problem with the generator, and it is best to go for maintenance frequently.