
A car chassis consists of the transmission system, running system, braking system, and steering system. The functions of a car chassis are: to support and install the car engine and its various component assemblies, forming the overall shape of the car, receiving the power generated by the engine, and ensuring normal driving when the car is in motion. Daily maintenance of the car chassis includes: 1. Ensuring good lubrication and proper adjustment of wheel hub bearings; 2. Proper adjustment of front wheel toe-in, and good lubrication and proper adjustment of wheel hub bearings; 3. Paying attention to changes in the front and rear axles and the frame; 4. Monitoring the working condition of the clutch; 5. Proper adjustment of brake clearance; 6. Checking for any damage to the leaf springs.

The car chassis is the foundational structure of the entire vehicle. My driving experience tells me it consists of four major components: the powertrain, the running gear, the steering system, and the braking system. The powertrain is like the nervous system of the human body, transmitting engine power to the wheels. The running gear includes the suspension and wheels, which are relied upon to absorb shocks on bumpy roads. The steering system is the entire linkage from the steering wheel to the tires. The braking system is a matter of life and death, as a timely brake can save lives in critical moments. I remember last year when driving on a mountain road, there was an abnormal noise from the chassis. After inspection, it was found that the suspension bushings had aged, and after replacement, the handling became much more stable. Only when these four systems work in harmony can the car both move and stop effectively.

As a frequent long-distance driver, I'm quite familiar with the chassis structure. It's basically divided into four major parts: the transmission system handles power transfer – without it, the car won't move; the running gear includes the suspension and wheels, determining how bumpy the ride is over obstacles; the steering system controls direction, affecting turning precision; and the braking system is all about stopping – safety depends on it. Especially during rainy seasons, after driving through water splashes, it's crucial to check if brake fluid has been contaminated. During my last maintenance, I discovered loose steering linkage and timely tightening prevented a major accident. Unusual noises from the chassis during daily driving are often warning signs that warrant prompt inspection.

The most intuitive view of a car's structure is during repairs when the chassis is dismantled. It consists of four major components: the powertrain includes the transmission and drive shaft, functioning like a conveyor belt; the suspension system, with shock absorbers and the frame, resembles a human skeleton; the steering system transmits commands from the steering wheel to the wheels; and the braking system uses calipers and brake pads to decelerate. These four parts must work in harmony to ensure safe driving. For example, in northern winters, road salt can corrode the chassis, so I remind friends to thoroughly rinse suspension components when washing their cars. When replacing worn brake pads, it's crucial to also inspect the brake fluid lines to prevent aging and leaks.


