The guard treasure dian: automobile parts and maintenance of summer
The air conditioning system
Air conditioning is not a common cause of cooling is not enough refrigerant. Adequacy of refrigerant can see through the observation hole on the drying chamber, an experienced mechanic from bubble flow situation can determine whether the air conditioning refrigerant replenishment is needed. If it is found that air conditioning refrigerant lack don't rush to supplement, should check whether there is leakage of refrigerant, according to the experience, the fault of air conditioning system is more than 80% caused by refrigerant leakage.
Air conditioning not refrigeration can check whether the system pressure is normal, in general, the normal air conditioning system the pressure for 2 to 3 bar, high voltage side pressure for 15-25 bar, owing to the different car. Normal should use hand could easily turn the air conditioner compressor, if use tools do not move, can be concluded that the compressor lock, must be replaced. If the inspection found that high pressure end particularly high pressure, low pressure side pressure particularly low, that is likely to be dry or expansion valve malfunction, when change is change. Especially running vehicles for more than 5 years more to check these parts. Vehicle maintenance and repair maintenance network
In order to make the air conditioning work stability, comfort and save fuel, many luxury cars installed sophisticated electronic control system, the system can also lead to abnormal air conditioning work if problems arise. Pay attention to check the maintenance.
Oil supply system
Summer oil supply system is easy to appear gas resistance phenomenon, this is because the oil is heated, part of the light gasoline fractions volatilizes into gas, existence and petrol and gas pipeline pump, the increased gas flow resistance. Combined with the high summer temperatures, easy to cause the generator even interruption phenomenon.
Driving gas resistance phenomenon, can make gasoline pump cooling or wet cloth to the vehicle to cool shade gets phenomenon be ruled out. Can change the installation position of diaphragm type gas pumps, from near the exhaust pipe back to the exhaust pipe in front and well ventilated place between the gasoline pump and exhaust pipe and a heat insulation board. Can also be on the petrol pump bursts with oil valve install a one-way valve spring is used to improve the gasoline pump gas resistance resistance.
The engine and the lubrication system
In the summer, the engine is also prone to the part of the problem. Therefore, the engine should be under special care, especially the limousine, the temperature of the engine is generally higher, this problem is more prominent, so the correct vehicle engine maintenance is very important. Engine should be in summer with high viscosity grade of lubricating oil, and reduce the oil change period, wheel hub bearing with high dropping point of lubricating grease, transmission and differential switch to a summer of heavy gear oil, brake fluid with high boiling point of the brake fluid. Limousine SG (SH, SJ better) should be used engine oil level, oil temperature range should be at least l5W40 level (it is best to use 5 w50) synthetic engine oil.
tire
Summer air temperature is high, when the tire temperature, tire pressure increase within easy blowout. When the tire temperature over 120 degrees, the tyres are in danger of a flat tire. Tire temperature is high, the frequency to speed up the tire deformation, make rubber easy ageing, occurrence blowout. Because this summer when the car running, often should check the tire temperature and pressure, maintain the prescribed standards for air pressure. In hot noon train operation should be appropriate to reduce the speed, 40-50 kilometers per vehicle parking should be a short rest in a cool, after waiting for tyre temperature decrease to continue driving.
Charging system
Summer driving, charging system should be regularly check. Battery charged easily occurred phenomenon, electrolyte evaporation fast, plate is easy to damage, so often should check the battery level and the proportion of the electrolyte, often to the electrolyte filling in distilled water, keep filling flap on vent unimpeded, otherwise it will happen internal pressure increase battery shell burst, still should adjust generator regulator, decrease the charging current of generator.
Car wade
Summer be especially careful when driving the vehicle's wading problem, many people believe that as long as the rain don't drown the exhaust pipe and distributor can trust wading, especially open limousine driver thinks, high-grade car sealed performance is good, wade is not a problem, actually otherwise. Due to luxury limousine, comfort, and the need of its security, performance, fuel economy, its electrical equipment, the more complex, and the line more than once can cause the water short circuit, and even a fire. Cars, on the other hand, in order to expand its use of space, often think of some components installed in a foxhole, or even a car. Once, the water machine can't turn, you must overhauling.
