After entering the winter, many owners have noticed the car maintenance, will be the timely replacement of oil, check antifreeze change etc.. But neglected to safeguard the traffic safety important part -- Brake oil.

One, what is the brake fluid brake fluid brake oil =?

Brake fluid is a liquid medium braking pressure transmission automobile hydraulic brake system, used in adopting hydraulic braking system in vehicle. Brake fluid is called brake oil or force oil, is an indispensable part of the brake braking system, and in the braking system, it is passed as a force of the media, because the liquid can not be compressed, so from the total pump output pressure through the brake fluid is passed directly to the pump.

Two, how to choose the high quality of brake fluid

1 appearance: high quality brake fluid appearance with honey like, pale yellow ordeep yellow, drops in the palm friction will be more and more hot. Inferior brake oilcontaining alcohol taste, liquid like water, and there may be some impurities and suspended matter.

2 boiling point: the boiling point of the higher the better, when the car long time running, the temperature will rise to the number of Baidu. If the boiling point of the brake fluid is not high enough, once the brake fluid brake as the temperature is more and more high, will vaporize, bubbles, causes not immediately brake, as can notguarantee driving safety.

3 freezing point: a point of the brake fluid is the most important fluidity, which is especially important in cold area. The quality of brake fluid in low temperature environment is still a sensitive and reliable. But the inferior brake fluid with high solidification point, when the temperature is decreased to a certain extent occurs solidification phenomenon, greatly reducing the braking performance.

4 corrosion: high quality brake fluid corrosion to metal and rubber is small, can prolong the life of the brake pump. But the brake fluid poor have more corrosive tometal and rubber, will cause the vehicle oil, brake turnover, resulting in serious accidents.

Three, replacement of brake fluid

The use of a certain period of time will be a timely replacement of brake fluid. In general, 1~2 km after check a brake fluid, and when 3~4 million kilometers or 2 yearsmust be a brake fluid replacement. After entering the winter, brake fluid before use itmay not meet the temperature requirements, timely check replacement.

Brake fluid replacement is best to professional 4S shop or special shop. In the replacement of brake fluid, to pay attention to the maintenance staff is first cleaned with alcohol brake system, the brake fluid can not mix different brands, to clean the brake system. When replaced by appearance, to distinguish whether the inferiorbrake fluid.

Brake for vehicles is the most important part of the brake fluid to a crucial role in it. So to timely inspection, timely replacement, in order to place the prevention of accidents.

Many people thought when complete, or did not use it for a long time in the morning, to idle the original geothermal car again after five minutes on the road, think it is good for the car, in fact not the case. According to a statistics show that DLF learned that engine parts wear parts for more than 90% of the proportion is within 3 minutes after cold start.

Hot car because the car after a long period of time of parking, engine oil flows back to the engine in the bottom of the oil sump. DLF said after so long ago in the car (e.g. overnight) to start the engine, the engine is in upper no oil lubrication. It takes about 30 seconds after launch because of the oil pump operation, the engine oil to the engine most in need of lubrication of piston connecting rod and crankshaft and other parts. But even after the engine immediately on the road, as long as you don't accelerator pedal motorcycle racing, keep running at low speed, the effect is the same operation and idle.

In addition, the engine before failed to reach operating temperature (about 90 to 110 degrees Celsius), the oil supply system cannot effectively because of the low temperature of gasoline complete gasification temperature of the liquid (believe everyone know to rise to the boiling point is vaporized). There is a "wet" are not gasification in gasoline and when the liquid is not easy to burn and start the engine. This relies on the role of the choke stopped some air into the cylinder to enhance the fuel/air mixing ratio and improve the engine speed makes the engine does not die. After reaching the normal operating temperature automatic choke will naturally due to mechanical action and return to normal state. Manual choke car be sure to remember to put the choke back, otherwise for oil/gas mixing ratio not only high waste gas, power, and incomplete combustion of gas will smoke.

About the gearbox change gear lubrication is the most easy to ignore people. Transmission gear oil and engine oil in the same place is: in cold vehicle gear oil flow to the gearbox lower half. Only when driving because of the operation will be at the bottom of the gear oil of gear, lubrication upper half. This is why most of the car in the cold car shift crude. The solution is not the original geothermal car can, right way should be running at low speed is slow.

DLF said, according to the above three original geothermal idle car is unnecessary, because the effect is limited, but also waste of petrol and time, and the engine idle speed idling, gasoline may also caused by incomplete combustion carbon deposit is more likely to damage the engine.

The right way to hot car should be 30 seconds after launch to hit the road in a minute. DLF remind but never high speed driving, at this time should be kept in a low speed engine speed is not more than 3000 ~ 3000 RPM. Generally keep 2000 turn, otherwise the engine and gearbox are intense wear, unable to recover. After being engine temperature rise to normal operating temperature, and restoring the driving method of the personal habits.

Car maintenance, the engine parts wear problem is outstanding, of which more than 80% of the reason is because the owner did not grasp the hot hot car or not caused by the car time has fast speed.

Ball cage: selects the import high strength wear resistant steel, after the rough machining of precision forging, cold extrusion, in order to ensure the stability of the internal steel structure of blank, coupled with the appearance of anti-corrosion treatment makes our products more wear-resisting, durable. Greatly prolong the service life of the product.

Shrouds: adopt high quality chloroprene rubber, acid and alkali resistance, abrasion resistance, tensile and tearing resistance, can withstand 38 degrees below zero Celsius to 90 degrees centigrade temperature change and not within the scope of crack; And special formula materials can withstand erosion caused from butter.

Butter: complex lithium grease add 5% molybdenum disulfide, where provide protection for abnormal wear and tear. In the face of the friction of metal and metal and high load condition is the best choice.

Ball cage (C.V.J oint) is short for "ball cage patterned constant speed universal joint". Is an important part in auto transmission system, its role is to transfer power from the transmission of the engine to the wheels, drive the car speeding more for cars. Patterned constant speed universal joint type many, of which the application is one of the most ball cage patterned constant speed universal joint and the triangle frame patterned constant speed universal joint, it has a sliding sleeve, three main shaft, drive shaft, star, cage, bell-shaped shell main parts. Patterned constant speed universal joint transmission heavy driving moment, owing to heavy load, high driving accuracy and high demand, and security, so its main parts are made from fine forging processing.

Outside of the ball cage: the ball cage of steel ball is fixed star set in place and clock form shell of a cage between six window, steel ball in star and clock shape shell is just the half of the position, in order to determine and the role of universal joint Angle, smooth surface treatment that the movement of the universal joint is like a helical gear, six star ball, respectively, to promote their respective sets and clock shell in the fairway, is just a through ball instead of the gear tooth to transmit torque.

Ball cage (fork type) : three goals without steel ball inside the pin type constant velocity universal joint, but instead USES three with needle roller bearings, can be in three bell housing orbital glide. Mainly used in four drove the ball inside the cage, is suitable for the torsion Angle is not in the position of the ball cage, inward and outward slip, in order to adapt to the drive shaft length changes produced during vehicle movement.

Ball cage (six steel-ball) : within such slippage patterned constant speed universal joint products have a different design idea, by the steel ball within the inclined orbit transfer torque and performance of the product excellence, beyond the inside the ball cage of TJ type, but the sliding distance is shorter, can solve the problem of noise, widely used in four-wheel drive vehicle.

Half shaft: half shaft is made up of half shaft rod connects ball cage outside and inside the ball cage, and make the inside and outside the ball cage in the same angular velocity transmission power of the mechanism.

Q: how bad the ball cage?

Answer: because of the great ball cage pass driving moment, the heavy load, under normal wear and tear can make smooth surface becomes rough, to a certain life, will be damaged.

Q: how to judge the ball cage is broken?

Answer: be in commonly steering or turbulence will regularly "kaka" sound, serious when run out of steam. If the steering, "kaka" sound is generally outside the ball cage is broken, a small amount is within the ball cage is broken; If it is bumpy "kaka" sound it is inside the ball cage is broken. Inside the ball cage damaged straight will ring. It is important to note that most of the damage situation, the ball cage is in the "power" gas "kaka" sound, and glide with little noise.

Q: whether must change the entire root half shaft is? Can only change the ball cage?

A: you can only change the ball cage. Usually in the ball cage is ok.

Q: can only change dustproof set?

Answer: after half shaft to be removed, check whether there is ball cage kuang, have into the dust, as the case decided to replace the ball cage dustproof set or change of inside and outside the ball cage.

Q: how to maintenance and inspection at ordinary times?

A: don't use high gear start at ordinary times, or lift the clutch pedal. Overloading, speeding will lead to the damage of the ball cage. Should always check the half shaft connection parts loose kuang, deformation. Have aging dustproof set of ball cage, have crack? Dustproof cover was broken after to change as soon as possible, because the dustproof cover protect the ball cage, inside with grease, dustproof set is broken, if you don't change, time grew fat, dust into the ball cage will cause the ball cage accelerated wear and tear, it is fatal for ball cage. Dustproof set can not be ignored, be safe is the most cost-effective.

Dust cover is one of the key components of the ball cage products, main effect is to prevent dust from entering the ball cage and prevent butter out of the cage. Damage to the ball cage with dustproof set of good or bad has a direct relationship. Special high temperature resistant grease must be used in the ball cage, cannot be replaced with other grease.

The most vulnerable to a problem: too much oil. The dangers of engine oil missing many owners know, bearing and shaft friction will be less because of the amount of oil, poor lubrication and aggravate the wear degree, even cause burn wazhou accident. In order to reduce the number of add oil, convenient maintenance and add oil when maintenance of many cyclists, too. Too much oil, the engine crankshaft, connecting rod big end handle at work will produce violent agitation, not only increase the engine internal power losses, and can make the increase in the number of the oil splashed onto the cylinder wall, burn oil line fault. Therefore, oil should be controlled in the oil in the engine oil pan feet between upper and lower scribed line.

After the transport costs, many motorists began to driving less, some only drive in holidays, in this way, the engine and gearbox transmission parts surface rust due to often is in a state of direct contact with air. Every few days is the best way to let the car run on thirty or forty minutes.

The belt is not tight, the better. Such as fan belt, improve the tightness of fan belt, can improve the effect of engine cooling, thus 1 vigorously improve the tightness of fan belt, fan belt too tight, but this kind of practice is wrong. Fan belt should keep elastic appropriate, because is too big, too tight will make bearing load increasing, increases power consumption, wear at the same time also can make water pump shaft bending, belt stretching deformation, shorten service life.

Make these problems are not just new owners, many older drivers like according to their own experience to judge all kinds of maintenance, but often have big discrepancy between manual with cars. Each owner to buy a car will have a maintenance of the periodic table, have been told when this how to do maintenance, but most of the owners open open, as long as you feel good, have no what problem, also gradually put behind.