Excessive oil temperature of the hydraulic system of the rubber paving machine will reduce the viscosity of the oil, increase the leakage, destroy the oil film of the lubricated part, and increase the wear of the parts; at the same time, the high temperature will also make the gasket made of rubber and other materials premature Damaged due to aging. Therefore, it is very important to control the appropriate oil temperature. When the oil temperature is too high, it must be shut down for inspection, generally starting from the following aspects:
(1) Check whether the liquid level of the fuel tank is too low. Experience has shown that high oil temperature is often caused by the lack of fuel in the fuel tank, so it should be replenished in time when there is a shortage of fuel.
(2) Whether the road paver machine hydraulic oil filter element and circuit are blocked.
(3) Whether the road paver machine radiator is normal. If a large amount of dust adheres to the radiator, it can cause poor heat dissipation and increase the oil temperature. As the working environment of the paver is dusty, the radiator should be cleaned up in time.
(4) Whether the quality of hydraulic oil is qualified. If the quality of the added oil is not up to standard, it will also cause the system oil temperature to be too high.
In addition, when the road paver machine hydraulic system is running short of oil, it is easy to cause damage to the pump and motor. Therefore, after the oil shortage is removed, the running status of the pump and motor should be checked, and the damaged parts of the pump and motor should be replaced if necessary.
The left and right spreaders sometimes do not work on the paver machine. The reason is generally a fault in the replenishment system. The reasons for the low pressure of the charge system are: the charge pump inlet is not smooth; the pressure of the charge pump relief valve is low; the charge pump itself malfunctions; the hydraulic motor is seriously leaking. Generally, check the charge pump and its overflow valve.