About car maintenance, we care about the most problems is the question of oil consumption or machine filter replacement. In fact, talking about car maintenance, not just focus on the surface of these issues, we should be more concerned about some of the details, I'll bring you today when maintenance most easily overlooked details of five, I hope to attract everyone's attention, reject "false "maintenance.

A steering rod

When we carry out maintenance to the steering rod, we need to pay attention to it no signs of loosening, because once the steering rod loose, stability car operations will be greatly reduced, causing traffic safety issues. Check the approach is the need to pull the lever hard to shake, to see is not very easy to sway, and if so, it is necessary to replace the ball or rod became total.

Second, wheel bearings

We know that the bearing loads are reduced coefficient of friction and play immobilize one component of the process of mechanical transmission. In automobiles, bearings, although relatively small parts, but for traffic safety, for car wheel bearings must be regularly inspected, cleaned and lubricated.

One end of the first car to be checked from the top, and which is supported on the safety seat, the rear wheels if the check, should the parking brake is disengaged, rotation of the hand wheel. Wheels should be rotated smoothly under normal circumstances, there is no friction and Laer "thump" sound. When listening to the sound, not the sound of scratching brake pad and brake disc and bearing rotation noise confusion, in order to avoid misjudgment.

Check wheel bearing nut must be tightened to ensure that. Is to seize the top and bottom of the tire, the wheel will shake the inside and outside, you should not feel obvious swing. If you feel a little wobbly or loose, or if the vehicle has traveled 50,000 kilometers to never cleaning bearing grease change, it should open the inspection. Bearing nut is fixed by a cotter pin, it should be taken out and throw, and back to a new split pin. If the car bearing fixing is a special locking nut, then, using a punch which is released from the groove of the axle. Replace timely, it should be replaced with a new nut as well. With a socket wrench remove nuts shaking gear wheel removed and the outer bearing ring. Removing the tire from the vehicle on the two wooden spacer, rear seal Qiaoxia punch hub, the bearing will fall off together with the seal.

Thoroughly washed with detergent in all parts, the bearing cleaned on a clean cloth, and dried naturally. Carefully check each roller and roller cage, check the bearing outer race. If there are relatively deep scratches, peeling or discoloration on the heat roller races or bearing must be replaced.

The new coated with grease on the bearings dry cleaned. Grease is uniformly pressed by hand around the rollers, the inner bearing into the hub and install a new seal in with a hammer knock-pad seal to place a hard wood. The sleeve on the hub axle, and bearings mounted on an outer ring gear, while rotating hub, tighten the fixing nut side, inspection and maintenance manual and a predetermined tightening the fixing nut.

Inserting a new split pin hole should be such as not to loose a little bit rather than tighten the nut and cotter pin tip is bent. If the vehicle using a special fixing nut, locking plate should be part of a clincher fixed properly, wheel bearing maintenance work is complete.

Third, the exhaust pipe

Automobile exhaust pipe, known as an important components of the car. Car exhaust pipe, also known as automobile exhaust hose, which is attached to the exhaust pipe between the engine exhaust manifold and the muffler, the entire exhaust system is coupled to a damping noise, exhaust extended elimination the role of sound system lifetime. Exhaust pipe relatively require more attention, such as a lot of people will find that the situation muffler discoloration, as well as in the deep-water road driving, if this time the exhaust pipe water, and then happened that the engine stalled, so that damage to the car it is fatal.

First, it should be noted that to prevent the water inside the muffler. When in deep water or washing with a road surface, should prevent the water inside the muffler. If the water is not careful, it should start the vehicle engine is idling heat at least 10 minutes, the water inside the discharge as possible. And in the interior of the muffler greased with anti-rust oil, here to emphasize specific practices refueling: Remove the muffler, the drain hole at the lowest position in central muffler good blocking, then connected at the addition of anti-rust oil from the muffler and engine shaking muffler make anti rust oil uniformly into the cylinder, installed after the muffler, the muffler due to the temperature was gradually raised, volatilization, muffler tail blue smoke will occur after the rust preventive oil is heated. But blue smoke will disappear after traveling approximately 20 km. After the disappearance of blue smoke, remove the blockage to drainage hole. It also recommends a new car refueling maintenance, usually once every six months after refueling maintenance on the card.

Second is a lot of people concerned about the problem of discoloration of the muffler. When the car encounters where it is difficult to start, first of all should be closed choke Start the engine, and pay attention to timely open the choke. At high speed for a long time do not choke closed state, the low range driving, which causes damage to the engine and the muffler are; secondly be careful not to place high-speed long H-throttle, because when the oil surface of the muffler, the rear car It will make the surface color of yellow color. Further, when the muffler sticky surface mass of earth and other dirt, it must be cleared up, so as not to affect the cooling function.

Although not a car exhaust pipe precision components inside, and exposed, many people will think it must be a durable components. Therefore, even if covered with dirt will be considered normal. But very important point is that the exhaust pipe of foreign matter can be connected with the interior of the car, its main role is to interior automotive exhaust gases. But if you make improper driving those substances harmful to the vehicle interior through the exhaust pipe into the car. So I remind for maintenance is the maintenance of the exhaust pipe of the vehicle interior from all kinds of sense.

Fourth, shock absorbers

Automotive shock absorbers use in the process of wearing parts, shock absorbers work is good or bad, will directly affect the smooth and other parts of the life of the cars, so we should make shock absorbers always in good working condition, available shock absorber test whether the following methods work well.

After parking the car traveling 10km on the poor condition of the road pavement, touch the shock absorber housing, if not hot enough, the internal shock no resistance, shock absorber does not work. At this time, the addition of a suitable lubricant, and then testing, if the case of heat, compared with internal shock absorber oil, should add enough oil; otherwise, indicating failure of the shock absorber; firmly press the bumper, and release, If the car has 2 to 3 times the jump, then the shock absorber, good; when the car slowly driving and emergency braking, if the more intense vehicle vibration, shock absorber described problems; a damper to remove its upright, and the lower clamp ring is connected to the vise, compression damping pull rod several times, this time should be stable resistance, resistance to pull up resistance should be greater than the downward pressure, such as resistance to unstable or no resistance, It may be short of oil damper or valve internal parts damage should be repaired or replaced.

In determining the shock absorbers have a problem or failure, should first check the shock absorber for oil leaks or traces of old oil spills.

Seal gasket, sealing gasket rupture damaged oil storage cylinder head nut loose. It may be a seal, sealing washers failure, replace them with new seals. If you still can not eliminate the leak, you should pull out the shock absorbers, if there was not a time card or severity, further checks whether the gap between the piston and cylinder is too large, whether the shock absorber piston rod bending, piston rod whether the cylinder surface and scratch or pull marks.

If there is no oil leakage shock absorber, the shock absorber should check the connection pin, connecting rod, the connecting hole, rubber bushings, etc. is damaged, sealing off, break or fall off place. If these were normal, the damper should be further decomposed, to check whether with the gap between the piston and cylinder is too large, cylinder without injury, the valve seal is good, valves and valve seat are tight fitting, and Save whether done spring shock absorber is too soft or broken, take grinding or replacement parts to repair approach according to the situation.

Further, rattle damper fault will appear in the actual use, mainly due to the damper spring and the steel sheet, frame or shaft collision damage or loss pad and a damper dust tube deformation, oil due to reasons such as lack of reasons should be identified, to be repaired.

Fifth, the spark plug

When the car driving to a certain number of kilometers, will produce carbon deposits and spark plug electrode gap increases and other failures, carbon engine fuel consumption will increase, the spark plug gap will cause increased ignition energy shortage caused by difficulty in starting. Therefore, regular inspection and maintenance of the spark plug, can prolong the life of the engine.

First, maintenance of the air cleaner should be cleaned regularly to prevent dust from entering the combustion gas with the mixture, which prevents corrosion of the spark plug. Secondly, we can also remove the spark plug on their own, to clean up the ignition head of dirt, soot. Of particular note is that, at the time of disassembly spark plugs, spark plug should pay attention not to let dust into the cylinder, should be pre-cleaned around the spark plug when removing and out. If oil cylinder, piston rings should be replaced or other components, so as not to short-circuit the spark plug fouling. In addition, the fuel oil is also closely related to the spark plug of life, therefore, we must pay attention to when refueling, should not freeloaders add oil quality problems.