Parts that are the most vulnerable to damage to your car now teach you how to maintain:

Electrical connector

The gold contacts are used on the car except for a few important electrical connectors. Most of the other connectors use copper-zinc alloys. Under normal conditions, its reliability is guaranteed, but if the car is in high temperature for a long time, the humidity is high. , Running in a bumpy environment, these joints may cause looseness, corrosion, poor contact and other failures, and some bizarre electrical failures are mostly caused by this.
Therefore, during routine maintenance, check the connectors on the computer, sensors, injectors, etc. of the vehicle.

Chassis components

From a use point of view, the chassis components are actually more problematic than the engine, but during routine maintenance, many people often overlook the inspection of the chassis components. The parts where the chassis is prone to failure mainly focus on:

1, shock absorbers: oil spill is a precursor to damage to the shock absorber, in addition, on the bad road, bumps significantly increased or longer braking distance is also a sign of damage to the shock absorber.

2. Suspension control arm rubber sleeve: After the rubber sleeve is damaged, the vehicle will experience a series of faults such as deviation, pendulum, etc. Even if it does four-wheel positioning, it will not help. If the chassis is carefully inspected, the damage of the rubber sleeve is easy to find.

3, Steering lever: Loosening of the steering rod is a serious safety hazard. Therefore, during routine maintenance, this part must be carefully examined. The practice is very simple: hold the lever and shake it vigorously. If it is not shaken, it means that everything is normal. Otherwise, it should replace the ball or rod assembly.

4. Exhaust pipe: Exhaust pipe is one of the most easily damaged parts of the car. Don't forget to take a look at the inspection. Especially exhaust pipe with catalytic converter should be carefully checked.

5, universal joint boot: Do not underestimate the outside of the universal boot, it not only has the effect of dust, but also to prevent the loss of grease around the joint, once the boot is damaged, grease quickly Will be lost, due to dry grinding, universal joints are easily damaged.

Tires

Should pay attention to the regular replacement of tires, a group of tires and then durable, can not use a lifetime, some people work easily, the use of the car is low, a group of tires after a few years, the tread pattern surface is intact, but in fact The performance of tires will gradually age with the increase of the age, and the quality will gradually decrease. If you do not recognize this, you think that “the surface looks good” means that the tire is no problem. That is the wrong view.

When maintaining the tires, first remove the stones and other inclusions in the tread and check whether the tires have blisters, layers, lacerations, blemishes, aging, etc.; secondly, when removing the tires, remove rust from the rims, check the inner tubes and linings. With no damage or wrinkles, inflated by the required air pressure, the tire flanging or transposition. In addition, check the tires and wings, car floor, leaf springs, fenders and other friction collision phenomenon.

Battery

The battery is the key in the electrical system. In the car, a large number of electrical devices are used. The battery is not working properly and will affect the performance of many devices. For example, in an automatic transmission car, if the battery is abnormal, the car will not be able to Start. Therefore, stable power supply must always be available.

When checking the liquid level of the battery, if the liquid level is located between the upper and lower reticle lines, it is deemed appropriate. At the same time, the liquid level difference of each tank should also be checked. If the liquid level is insufficient, the top cover of the battery can be unscrewed and the distilled water replenishment liquid can be poured. surface.

Check the terminals of the battery and use the iron brush to remove dirt from the terminals. If the wiring clips are heavily defaced, you can use sandpaper to wipe along the inner walls to remove dirt.

Brake pads

Usually we will use the brake indicator light on the dashboard as the basis for the brake shoe change, but this is the final bottom line, if you only then change, it is already very dangerous.

It should be reminded that although all vehicles have this type of warning system, some of them directly sense the thickness of the brake shoe, while others are completely worn out after the brake shoe has been completely wiped out. The brake fluid will therefore drop extremely and cause the warning light to illuminate. If the latter is the latter, wait until the warning light is on, the brake pad metal base and the brake disc have been in the state of iron grinding, at this time, the bright iron will be seen near the edge of the tire in the tire. Therefore, each time When the plant maintenance, you must check whether the brake pads can be used, and replace the brake pads near the end of life, instead of just believing the warning lights.