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Auto parts manufacturers teach you how to maintain - electrical connectors - in addition to a few important electrical connectors in the car with gold contacts, most of the joints are made of copper-zinc alloy, under normal circumstances, its reliability It is guaranteed, but if the car is operated in a high temperature, high humidity, and bumpy environment for a long time, these joints may cause looseness, rust, poor contact, etc., and some strange electrical faults are mostly caused by this.
Therefore, during routine maintenance, focus on the connectors of the computer, sensors, injectors, etc. on the vehicle.
Chassis components - From the point of view of use, chassis components are actually more prone to problems than engines, but in routine maintenance, many people tend to overlook the inspection of chassis components. The parts of the chassis that are prone to failure are mainly concentrated in:
1. Shock absorber: Oil leakage is a precursor to the damage of the shock absorber. In addition, the bump on the bad road surface is obviously increased or the braking distance is long, which is also a sign of shock absorber damage.
2. Suspension control arm rubber sleeve: After the rubber sleeve is damaged, the vehicle will have a series of faults such as deviation, swinging, etc. Even if it is done in four-wheel positioning, it will not help. If the chassis is carefully inspected, the rubber sleeve damage is easy to find.
3, steering rod: steering rod slack is a serious safety hazard, therefore, in routine maintenance, you must carefully check this part. The practice is simple: hold the lever and shake it vigorously. If it is not shaking, it means everything is normal. Otherwise, the ball or lever assembly should be replaced.
4, exhaust pipe: exhaust pipe is one of the most vulnerable parts of the car bottom, do not forget to take a look at the inspection. In particular, the exhaust pipe with a three-way catalytic converter should be carefully inspected.
5, universal joint dust jacket: Do not underestimate the dust jacket outside the universal joint, it not only has dust-proof effect, but also can prevent the loss of grease around the universal joint, once the dust jacket is damaged, the grease is very fast It will be lost, and the universal joint is easily damaged due to dry grinding.
Tires - pay attention to regular tire changes, a group of tires are durable, can not be used for a lifetime, some people work easily, the frequency of use of the car is low, after a few years of use of a set of tires, the surface of the tread pattern is intact, But in fact, the performance of the tire will gradually age with the increase of the age, and the quality will gradually decrease. If you don't know this, you think that the 'good looks on the surface' means that the tire is ok. That is the wrong view.
When maintaining the tires, first remove the inclusions such as stones in the tread, check the tire for bubbling, layering, cracking, aging, aging, etc. Secondly, when removing the tire, rust the rim, check the inner tube and lining With no damage or wrinkles, the air is inflated according to the specified pressure, and the tire is turned or changed. In addition, check the tire and the wing plate, the car floor, the leaf spring, the fender, etc. for frictional collision.
Battery - The battery is the key in the electrical system. In the car, a large number of electrical devices are used, and the battery is not working properly, which will affect the performance of many devices. For example, in an automobile of an automatic transmission, if the battery is not normal, the car will not be able to start. Therefore, a stable power supply must always be obtained.
When checking the battery level, it is considered appropriate if the liquid level is between the upper and lower engraved lines. At the same time, the liquid level difference of each tank should also be checked. If the liquid level is insufficient, you can unscrew the lid on the battery and pour distilled water to make up the liquid level.
Check the battery terminals and use an iron brush to remove dirt from the terminals. If the wiring clamp is heavily soiled, use sandpaper to rub along the inner wall to remove dirt.
Brake Pads - Usually we will judge whether the brake warning lights on the instrument panel are illuminated as the brake shoe, but this is the final bottom line. If it is changed at this time, it is quite dangerous.
To remind you that although all vehicles have such warning systems, some directly sense the thickness of the brake shoes, while others are completely worn after the brake shoes have been completely worn, so the brake fluid is extremely lowered, so that the warning lights are bright. Start. If it is the latter, wait until the warning light is on, the metal base of the brake pad and the brake disc are already in the iron-iron state. At this time, the bright iron filings will be seen near the edge of the rim. Therefore, check the brake pads for each time you enter the factory and replace the brake pads near the end of life, instead of just trusting the warning lights.
