1. Afraid of "dirty"
If the parts such as fuel filter, oil filter, air filter, hydraulic oil filter and various filters are too dirty, the filtering effect will become worse, and too many impurities will enter the oil circuit cylinder, aggravating the wear of parts and increasing the possibility of failure; If it is blocked seriously, the vehicle will not work normally Dirty radiator of water tank, radiator of cylinder block and cylinder head of air-cooled engine, radiator of cooler and other parts will lead to poor heat dissipation and excessive temperature Therefore, such "dirty" parts must be cleaned and maintained in time
2. Fear of "heat"
Teplota piestu motora je príliš vysoká, čo môže ľahko spôsobiť prehriatie a roztavenie a držanie valca; Prehrievajú sa gumové tesnenia, trojuholníkové pásky, pneumatiky atď., čo ľahko predčasne starne, znižuje výkon a skracuje životnosť; Cievka štartéra, generátora, regulátora a iných elektrických zariadení je prehriata, čo sa dá ľahko spáliť a zošrotovať; Ložisko vozidla sa musí udržiavať pri primeranej teplote. Ak sa prehreje, mazací olej sa rýchlo znehodnotí, čo v konečnom dôsledku povedie k spáleniu ložiska a poškodeniu vozidla.
3. Afraid of "string"
Various coupling parts in the fuel system of diesel engine, the driving and driven gears in the main reducer of the drive axle, the hydraulic control valve block and valve stem, the valve core and valve sleeve in the full hydraulic steering gear, etc. These matching coupling parts are specially processed and ground in pairs during manufacturing. The matching is very precise. They are always used in pairs within the service life and must not be interchanged Some mutually matched parts, such as piston and cylinder liner, bearing bush and journal, valve and valve seat, connecting rod big end pad cover and rod body, have a relatively good fit after running in for a period of time. During maintenance, pay attention to assembly in pairs and do not "visit" each other
4. Fear "anti"
Tesnenie valca motora nemožno pri montáži namontovať opačne, inak to spôsobí predčasnú abláciu a poškodenie tesnenia valca; Niektoré piestne krúžky so špeciálnymi tvarmi sa nesmú inštalovať opačne a musia sa montovať podľa požiadaviek rôznych modelov; Existujú aj smerové požiadavky na inštaláciu lopatiek ventilátora motora. Ventilátor je vo všeobecnosti rozdelený na výfukový a sací, čo nie je možné obrátiť, inak to povedie k zlému odvodu tepla a nadmernej teplote motora; V prípade pneumatík so smerovým vzorom, ako sú pneumatiky so vzorom rybej kosti, značka na zemi musí po inštalácii smerovať hrot rybej kosti smerom dozadu, aby sa zabezpečila maximálna hnacia sila Pre dve pneumatiky inštalované spolu majú rôzne modely aj odlišné požiadavky a nie je možné ich namontovať. na želanie
5. Fear of "lack"
When repairing the vehicle, some small parts may be omitted due to negligence, and some people even think it doesn't matter whether they are installed or not, which is very dangerous and harmful Engine valve keys shall be installed in pairs. If they are missing or missing, the valve will lose control and damage the piston and other parts; The cotter pin, locking screw, safety plate or spring pad and other locking devices installed on the engine connecting rod bolt, flywheel bolt and transmission shaft bolt may lead to serious faults in use once they are omitted; Once the oil nozzle used to lubricate the gear in the engine timing gear chamber is missing, it will lead to serious oil leakage and low engine oil pressure; The loss of water tank cover, oil port cover and oil tank cover will invade sand and dust and aggravate the wear of all parts
6. Afraid of "oil"
The paper filter element of engine dry air filter has strong moisture absorption. If it is stained with oil, it is easy to suck the mixture with high concentration into the cylinder, resulting in insufficient air, increased fuel consumption and reduced engine power. The diesel engine may also cause "flying car"; If the triangular tape is stained with oil, it will accelerate its corrosion and aging, and slip easily, resulting in the reduction of transmission efficiency; If the brake shoe, friction plate and brake belt of dry clutch are stained with oil, it is easy to slip and work poorly, thus threatening driving safety; Greasy dirt on the starting motor and generator carbon brush will lead to insufficient starting motor power and low generator voltage due to poor contact Tire rubber is very sensitive to oil corrosion. Contact with oil will soften or peel the rubber. Short time contact will lead to abnormal damage or even serious damage to the tire
7. Afraid of "washing"
Some novice drivers or repairmen may think that all parts need cleaning. In fact, this understanding is one-sided For the paper air filter element of the engine, when removing the dust on it, you can't clean it with any oil. Just tap it gently with your hand or blow the high-pressure air from the inside to the outside of the filter element; Leather parts should not be cleaned with oil, but only with a clean rag
8. Fear of "pressure"
Ak je plášť pneumatiky skladovaný dlhší čas pod tlakom a neprevráti sa včas, v dôsledku vytláčania sa zdeformuje a ovplyvní životnosť; Ak je papierový filtračný prvok vzduchového filtra a palivového filtra stlačený, spôsobí veľkú deformáciu a nemôže spoľahlivo hrať úlohu filtrácie; Gumové olejové tesnenie, trojuholníková páska a olejové potrubie nesmú byť vytlačené, inak sa tiež zdeformujú a ovplyvnia bežné používanie
9. Fear of "near fire"
Gumové výrobky, ako sú pneumatiky, trojuholníková páska, tesniaci krúžok vložky valca a gumové olejové tesnenie, ak sú v blízkosti zdroja ohňa, budú ľahko starnúť, znehodnotiť alebo poškodiť. Na druhej strane môžu spôsobiť aj požiarne nehody. Najmä niektoré dieselové autá sa v krutých mrazoch v zime ťažko štartujú. Niektorí vodiči na ich zahrievanie často používajú horák. Musíme zabrániť horiacim vedeniam, olejovým okruhom atď
10. Afraid of "Repetition"
Some parts should have been used once, but some drivers or repairmen reuse them for saving or because they don't understand the "taboo", which is very likely to lead to accidents Generally speaking, the engine connecting rod bolts, nuts, fixing bolts of imported diesel engine fuel injector, cylinder liner water blocking ring, sealing copper gasket, various oil seals and sealing rings of hydraulic system, as well as pin pieces and split pins at important parts must be replaced with new ones after disassembly; For the engine cylinder gasket, although no damage is found during maintenance, it is best to replace it with a new one, because the old one has poor elasticity, poor sealing and easy ablation damage. It needs to be replaced after a short time of use, which is time-consuming and laborious. Therefore, if there is a new one, it is better to replace it as much as possible