1. Do not suddenly push the lifting handle to the "down position" during full-load lifting.
If this operation error occurs, the carriage will rush down suddenly, which will bring a great impact to the frame, and even cause an accident. Therefore, the above-mentioned operations should be avoided as much as possible. If there are special circumstances, it must be operated carefully, and the landing speed should be slowed down as much as possible. It is necessary not to drop the carriage suddenly to the bottom.
2. It is not allowed to use the heavy lifting vehicle-slamming brake to unload the cargo.
Due to the large inertial force (generally 5~20 times of the rated lifting force), it is very easy to cause permanent deformation of the frame, open welding of the carriage and auxiliary frame, burn the oil pump or damage the sealing ring, damage the hydraulic cylinder and other damages. , the service life of the vehicle is reduced, and in severe cases, there will be a rollover accident. Therefore, it is generally forbidden to drive when the dump truck is lifted.
3. The dump truck must disengage the power take-off after unloading the cargo before driving.
If this operation error occurs, when the dump truck is driving, because the power take-off is in the "engagement" position, the lift oil pump will run at high speed and without load for a long time in the "small cycle" state. As a result, the oil temperature of the hydraulic oil rises rapidly, which can easily cause damage to the oil pump oil seal, and even cause the oil pump to "burn out"; what is more serious is that the operation of the oil pump means that the hydraulic system has a power source, and the car is prone to automatic lifting during driving. accident.
4. The power take-off cannot be in the "on" position when driving.
If it is in the "on" state (the red light is on), the oil pump will continue to rotate, and the hydraulic system will have a power source, which will cause the car to automatically lift due to misoperation on the air control valve; Even if the control distribution valve is in the "down" position, the oil will enter the oil pump, which will cause the oil pump to burn out.