Where should the jack be placed when changing front tires?
1 Answers
When replacing front or rear tires, you can use stones or bricks to stabilize the vehicle's front axle and rear axle. Dig a pit under the tire to be removed so that the tire is suspended and can be replaced. When the vehicle is lifted by a jack, never start the engine, as the vibration of the engine or the rotation of the wheels may cause the vehicle to slip off the jack, creating a hazard. Below is an introduction to the classification of jacks: 1. Screw Jack: The screw jack has no self-locking function on its threads and is equipped with a brake. Releasing the brake allows the load to descend quickly, reducing return time, but this type of jack has a more complex structure. Screw jacks can support heavy loads for long periods, with a maximum lifting capacity of up to 100t, and are widely used. When equipped with a horizontal screw at the bottom, they can also move the load over small distances. 2. Hydraulic Jack: Used in hydraulic transmission systems as an intermediate medium, it plays a role in transferring and converting energy. It also lubricates, protects against corrosion, cools, and flushes components within the hydraulic system. 3. Electric Jack: The jack is equipped with a pressure-holding device to prevent overpressure. If overpressured, the jack cannot return to a certain position. A special structure provides dual protection for the jack. When equipped with a diving device, the jack can achieve high travel with a low height.
