Car maintenance is a win-win situation, and modern car maintenance mainly includes the maintenance scope of the engine system (engine), transmission system, air conditioning system, cooling system, fuel system, power steering system, etc. The maintenance work on the surface of a car is relatively simple, but once it involves the maintenance of the car's transmission system, driving system, steering system, braking system, etc., it becomes more tedious and complex. The internal systems of these chassis are located at the bottom and must be raised using hydraulic jacks or other lifting systems.

The jack support point of a private car is usually located on the inner side of the side skirt, like the two fins on both sides of the chassis. This fin protrudes from the chassis steel plate and can withstand relatively high pressure. The support point at the front wheel is 20 centimeters behind the front wheel, and 20 centimeters in front of the rear wheel.

If the hydraulic jack is supported on the steel plate of the chassis, it may cause unnecessary damage to the chassis. In addition, supporting on the suspended arm and lower hem is also an incorrect operating method. If the jack slips and the vehicle falls off during use, both the chassis and the jack will be damaged.