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Sweeper information

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Analysis of four reasons for the overall paralysis of the road sweeper hydraulic system
Release time: 2017-03-28 10:48:18 source: itforthai.com

The overall paralysis of the hydraulic system of the road sweeper means that all components related to the hydraulic system of the road sweeper are not working. 道路清扫车 出现液压系统整体瘫痪是由以下四个方面的原因造成的。 The overall paralysis of the hydraulic system of a general road sweeper is caused by the following four reasons.
1. The hydraulic oil pump of the road sweeper fails to cause the hydraulic system to work normally. Oil pump failure inspection method. After starting the secondary engine of the road sweeper , remove the hydraulic hose at the oil pump outlet. See if there is any hydraulic oil coming out. If there is no oil, first check the hydraulic oil in the hydraulic oil tank is enough to maintain normal work. If the hydraulic tank level gauge cannot see the oil, add hydraulic oil. When the oil quantity is sufficient, check whether the oil inlet pipe of the hydraulic oil pump is tight. If the hydraulic oil pipe is not tightened, the air pump cannot leak oil into the oil pump to work during work. For example, after removing the oil pump's oil outlet hose, there is oil out but the oil pressure is not enough (check the oil pressure method → block the oil pump's oil outlet hose with a thumb, under normal operation of the oil pump, you can't hold the oil outlet hose to spray Out of hydraulic oil). The reason for the insufficient oil pump pressure is that the hydraulic oil pump has a broken shaft or the oil pump shaft key has fallen off. If the oil pump is broken, the oil pump needs to be replaced again. The key is removed. Reinstall the key.
2. Road cleaning truck solenoid valve overflow valve stuck valve. After the valve is stuck, the relief valve needs to be replaced or cleaned.
3. The operating box in the cab of the road sweeper controls the relief valve head to fall off or become loose. This is a very simple circuit problem. You only need to check the cable heads that have come off or have poor contact in the operation box, and connect the power supply to solve the problem.
4. The secondary engine of the road sweeper automatically flames out and does not work. When the secondary engine of the road sweeper is working normally, the twisted auxiliary engine of the operation box can be turned off automatically. Install a pressure relay behind the solenoid valve seat. When the pressure is too high, the pressure relay is automatically powered off and the engine is automatically shut off. Before the vehicle leaves the factory, the solenoid valve pressure gauge is twelve megapascals. Digital indicators for pressure relays are between 145 and 150. It is found that after the engine is turned off, the pressure is first adjusted to 12 MPa, and then the pressure relay is adjusted to between 145 and 150. You can start the auxiliary engine smoothly.

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