What is the correct way to use a jack?

[JessicaFitz]

The correct way to use a jack is: 1. Stabilize the vehicle before use; 2. Find the proper support point - there are dedicated jack support points under the vehicle body, usually located near the tires along the edges on both sides of the vehicle chassis; 3. Lift steadily and slowly; 4. Household car jacks cannot be used for large vehicles. Common jacks mainly include rack jacks and screw jacks. Rack jacks are further divided into two types: herringbone structure and diamond structure. Herringbone rack jacks have relatively lower load capacity, so they are mainly equipped on small vehicles. Diamond structure jacks have more reliable support structures than herringbone jacks and are equipped on most household vehicles. Screw jacks rely on their own threaded structure for self-locking to support vehicles, with much greater load capacity than rack jacks, but they are slower in operation and descend quickly.

[CadenLynn]

I've changed tires with a jack several times, and found the most crucial thing is to park on a level and solid surface, engage the handbrake, and shift into park. Then squat down next to the wheel to locate the dedicated jacking points on the vehicle's chassis—never jack up from a random spot to avoid risking body deformation. Position the jack base firmly on the ground, and use a wrench or handle to slowly turn and raise the vehicle, lifting bit by bit without rushing until the tire is a few centimeters off the ground. Quickly place a safety stand or spare bricks for support in case the jack suddenly slips. After finishing the job, carefully turn to lower the jack gradually, ensuring the wheel touches the ground securely before removing the tools. Once, I nearly had a rollover on a slope, so flat ground is a must. Also, check the jack's lubrication to prevent seizing, and keep a pair of gloves handy for safer work.

[JeremiahLynn]

I always prioritize safety when using a jack because a single mistake can injure someone or damage the car. First, ensure the car is parked on level concrete, engage the handbrake, and turn off the engine. Locate the metal support points on the chassis correctly—avoid lifting on plastic parts as they may break. The type of jack is crucial: mechanical jacks require slow turning, while hydraulic ones just need pumping, both avoiding overload. Operate by raising the vehicle slowly, not higher than necessary, and quickly place auxiliary supports—avoid crawling under the car. When lowering, adjust the handle gently for even force distribution. Regularly check the jack's condition, such as for oil leaks or loose screws, and repair promptly. Store it in a dry place and wipe off dust after use.

[StAurora]

Using a jack is quite simple: park the car, engage the handbrake, find a level spot on the ground, place the jack steadily, align it with the chassis markings, slowly turn it up until the wheel is off the ground, insert a wooden block for reinforcement, and then lower it down carefully for safety. Keep the tools clean to prevent rust.