Currently, most of the special vehicles produced by Hubei Chusheng use combination instruments, such as suction trucks, sewage suction trucks, high-pressure cleaning vehicles, and water spraying. The instrument cluster consists of a mask, a frame, a watch core, a printed circuit board, a connector, an alarm lamp, and an indicator lamp. The number of combination instruments in different special vehicles is different. The main instruments on the general instrument panel are: fuel gauges, coolant temperature gauges, engine tachometers, and speedometers. There are many indicator lights, warning lights, and instrument lights in Shanghai. .

What should be paid attention to when assembling and disassembling a suction truck?

1. When disassembling the suction truck combination meter, the battery negative cable should be removed first to avoid the circuit short circuit caused by touching the back of the instrument panel.

2. When removing the decorative panel, because the fixing screws are generally concealed, it is necessary to carefully look for the fixing screws, otherwise forced removal will damage the decorative panel.

3. When assembling and disassembling the instrument cluster, attention should be paid to the clue connector and the speedometer shaft connector at the back of the instrument panel. Generally, they are equipped with a locking mechanism. Do not force demolitions to ensure that they are in place during installation.

4. Be careful not to damage the printed circuit when removing the meter core, power regulator, illumination and indicator from the suction truck PCB.

5, when replacing the watch core or instrument sensor separately, pay attention that the instrument and sensor must be used together.

6, when dismantling the suction truck instrument and sensor, pay attention to the action should be light, do not beat.

7. Directional requirements for electric oil pressure sensor installation.

8, the instrument and sensor wiring, the sensor's ground must be reliable.

9, the polarity of the electromagnetic instrument terminal is not allowed to take wrong.

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