When the vehicle is jacked up, the engine must not be started. Because the vibration of the engine or the rotation of the wheels will cause the vehicle to slide down from the jack and cause danger. Vehicles for various types of vehicles are generally secured in position when using jacks to ensure safety. Jacks cannot be used to support bumpers, beams, and other parts.
Car maintenance personnel must not work under unsupported vehicles. When changing wheels, passengers cannot stay in the car because their movement may cause the vehicle to slip off the jack. If there are no jacks when changing tires, different emergency measures may be taken depending on the location of the tires being replaced.
When disassembling the outer wheel of the two wheels, the inner wheel of the vehicle can be stopped on a wooden block or stone with an appropriate height, so that the outer wheel can be replaced by being suspended. Pay attention to tighten the hand brake and plug the front wheel. When replacing the front tire or the rear inner tire, secure the front axle and the rear axle of the vehicle with stones or bricks, and dig the pit under the tire to be removed so that the tire can be floated and replaced.
Self-priming pumps are a specific type of liquid pump designed to have the required liquid inside the cavity or pump body necessary to start the pumping process. This offers the potential for increased operating efficiencies in process plants where pumps are used for a variety of repeated yet intermittent operations.
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