Usage Methods and Precautions for Manual Car Jack

With the improvement of people's living standards, cars have become an essential means of transportation for almost every household. However, when a car needs a tire change or some simple repairs, it is not always possible to drive to a repair shop. In such cases, a hand-crank jack plays a very important role.

A hand-crank jack is a type of mechanical jack. Also called a hand-crank lever jack, it functions the same as a jack, used to lift heavy objects, but its power source is manual cranking. It uses atmospheric pressure to lift objects that human strength alone cannot support. Next, let's look at the usage methods and precautions for a hand-crank car jack!

1. How to use a hand-crank jack

1. When using a hand-crank jack, select the placement position of the lever jack according to the center of gravity of the heavy object to prevent tipping during lifting.

2. During lifting and lowering, the entire surface area of the jack plate or lever foot must be in contact with the heavy object to ensure sufficient strength and prevent the object from slipping.

3. The ground where the hand-crank jack is placed should be solid. If the ground is soft, place a block under the base, and position the jack in the center of the block.

4. Before using the hand-crank jack, perform an empty crank from low to high to check for any jamming or abnormalities. Only use it if everything is normal.

2. Precautions for using a hand-crank jack

1. Before use, you must understand the weight of the heavy object and the usage range of the hand-crank jack. Overloading is strictly prohibited to avoid equipment damage and accidents.

2. If the heavy object exceeds the rated lifting capacity, multiple hand-crank jacks should be operated simultaneously, ensuring the load is evenly distributed, the lifting and lowering speeds are consistent, and the process is stable.

3. After lifting the heavy object, if it cannot be unloaded in a short time, auxiliary blocks equal in height to the lifted object must be placed underneath as support.