key points of safe operation：
① in the process of vehicle washing, maintenance and grease filling, the vehicle shall be lifted up and the support rod and safety pin shall be fixed firmly.
② special tools shall be used for oil change and removal of lifting pump and oil pipe.
③ when carrying out the above work, the wheel must be braked with the hand brake, and the stop plates shall be added at the front and rear wheels.
④ when carrying out professional maintenance in the maintenance factory, the top of the truck body shall be hoisted by the crane (lifting state).
⑤ when the dump truck is overturned, people should never enter under the truck.
⑥ when removing the water and goods in the trunk, people should never enter under the trunk.
⑦ do not drive when the trunk is lifted.
⑧ before driving, it is necessary to check and make sure that the car body is in a safe state.