Car parts have
Time: 2018-5-21 Hits: 72
There are thousands of parts on the car, and they all have their own characteristics. In the maintenance of the car, if you do not understand these characteristics, it may affect a car's performance. In general, auto parts have "ten fear".
A fear of "hot"
The engine piston temperature is too high, easy to cause overheating and smelting and holding cylinder; rubber seals, triangle tape, tires and other overheating, premature aging, performance degradation, shorten the service life; starter, generators, regulators and other electrical equipment The coil is overheated, easily burned and scrapped; the vehicle bearing should maintain proper temperature, such as overheating, the lubricating oil will quickly deteriorate, eventually causing the bearing to burn and the vehicle damaged.
Second fear of "dirty"
If the fuel filter, oil filter, air filter, hydraulic oil filter, and various types of filter screens are dirty, the filtration effect will be deteriorated. Excessive impurities will enter the cylinder of the oil passage and increase The wear of the parts increases the possibility of failure; if it is severely blocked, it can also cause the vehicle to not work properly. Water tank fins, air-cooled engine blocks, cylinder head fins, cooler radiating fins, and other parts that are too dirty can cause poor heat dissipation and high temperatures. Therefore, such "dirty" parts must be cleaned and maintained in time.
Three afraid of "strings"
Various types of couplings in diesel engine fuel systems, main and driven gears in the main axle of the transaxle, hydraulically operated valve blocks and valve rods, spools and valve sleeves in full hydraulic steering gears, etc. These mating parts are manufactured After special processing, it is made by grinding in pairs, with very precise combination. It is always used in pairs during the service life, and must not be interchanged. Some mutual components, such as pistons and cylinder liners, bushings and journals, valves and valve seats, connecting rods, large heads and shafts, etc., after a period of grinding and cooperation, have relatively good cooperation, and should also be observed during maintenance. Paired assembly, do not "chain" each other.
Four afraid of "anti"
The cylinder head gasket of the engine cannot be reversed during installation, otherwise it will lead to premature ablation and damage of the cylinder head. The piston rings of some special shapes must not be installed in reverse. They should be assembled according to the requirements of different models; there are also directions when the engine fan blades are installed. Requirements, the fan is generally divided into two kinds of exhaust and suction, can not be reversed, otherwise it will lead to poor engine cooling, high temperature; for pattern patterns of tires, such as herringbone pattern tires, the installation of the ground markings should make people The tip of the word points toward the rear to ensure maximum driving force. For the two tires installed together, different models also have different requirements and cannot be installed arbitrarily.
Five afraid of "missing"
In the maintenance of vehicles, some small parts may be missed due to inadvertence, and some people even think that it does not matter whether it is loaded or not. This is very dangerous and harmful. Engine valve locks should be installed in pairs. Missing or missing valves will result in loss of control of valves and damage to the pistons; etc.; engine connecting rod bolts, flywheel bolts, cotter bolts mounted on driveshaft bolts, locking screws, and rupture discs. Spring washers and other anti-loosening devices, once they are installed, may cause serious malfunctions during use. Once the oil nozzles used to lubricate the gears in the engine timing gear chamber are missed, they will cause serious drainage of oil. The oil pressure is too low; the water tank cover, oil port cover, and fuel tank cover are lost, which will invade gravel, dust, etc., and aggravate the wear of all parts.
Six afraid of "oil"
The engine dry air filter paper filter element has strong hygroscopicity. If it is stained with oil, it can easily draw a higher concentration of air into the cylinder. This can result in insufficient air, increased fuel consumption, and reduced engine power. Causes the "carriage"; if the triangular tape is stained with oil, it will accelerate its corrosion aging, and it is prone to slippage, resulting in reduced transmission efficiency; brake shoes, dry friction plates, brake belts, etc., if oiled Fluids are prone to slippage and poor workability, thus threatening vehicle safety. Starting motors and generator carbon brushes, etc., are stained with oil, which can result in poor starter motor power and low generator voltage due to poor contact. Tyre rubber is very sensitive to the corrosion of oils. Contact with oil will make the rubber soft or peeling. Short-term contact will lead to abnormal damage or serious damage to the tire.
Seven afraid of "washing"
Some people who are driving or beginner repairs may think that all parts need cleaning. In fact, this understanding is one-sided. For the paper air filter of the engine, when the dust on it is removed, it cannot be cleaned with any kind of oil, and it is not suitable for the leather parts to be blown through the filter element by gently tapping or high-pressure air. With oil cleaning, just clean it with a clean rag.
Eight afraid of "pressure"
If the tire casing is stored for a long time and is not turned in time, it will be deformed due to extrusion and affect the service life; if the air filter or the paper filter of the fuel filter is squeezed, it will produce a large deformation. Can not play a reliable role in filtration; rubber seals, triangle tape, tubing, etc. can not be squeezed, otherwise it will also be deformed, affecting the normal use.
Nine afraid of "near fire"
Rubber products such as tires, triangle tapes, cylinder liners, rubber seals, etc., which are close to the source of fire, will easily deteriorate, deteriorate, or be damaged. On the other hand, they may cause fire accidents. Especially for some diesel vehicles, it is difficult to start cold in winter. Some drivers often use torch heating and must prevent burnout of circuits and oil circuits.
Ten afraid of "repeat"
Some parts are supposed to be used once, and individual drivers or repairmen are repeatedly used to save or because they do not understand the taboos. This can easily lead to accidents. In general, the engine connecting rod bolts, nuts, imported diesel fuel injector fixing bolts, cylinder liner water blocking rings, sealed copper pads, various types of hydraulic seals, seals and parts of the pin, split pin and other parts of the disassembled After that, new products must be replaced; for engine cylinder head gaskets, although no damage is found during inspection, it is better to replace new ones, because old products have poor elasticity, poor sealing, and easy to be ablatively damaged, so they need to be replaced in a short period of time. Therefore, it takes time and effort. If new products are replaced as much as possible.