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"
Lub cav piston kub siab dhau lawm, uas yooj yim ua rau overheating thiab melting thiab lub tog raj kheej tuav; Roj hmab ntsaws ruaj ruaj, daim kab xev daim duab peb sab, lub log tsheb, thiab lwm yam yog overheated, uas yog ib qho yooj yim rau lub hnub nyoog ntxov ntxov, txo kev ua tau zoo thiab ua kom luv lub neej kev pab cuam; Lub coil ntawm starter, generator, regulator thiab lwm yam khoom siv hluav taws xob yog overheated, uas yog ib qho yooj yim mus hlawv thiab scrapped; Cov kabmob ntawm lub tsheb yuav tsum khaws cia ntawm qhov kub thiab txias. Yog hais tias nws yog overheated, cov roj lubricating yuav deteriorate sai sai, uas yuav nws thiaj li ua rau lub burning ntawm bearing thiab kev puas tsuaj ntawm lub tsheb.
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"
Lub cav lub tog raj kheej gasket tsis tuaj yeem ntsia rov qab thaum lub sijhawm teeb tsa, txwv tsis pub nws yuav ua rau ntxov ntxov ablation thiab kev puas tsuaj ntawm lub tog raj kheej gasket; Qee cov piston rings nrog cov duab tshwj xeeb yuav tsum tsis txhob ntsia rov qab, thiab yuav tsum tau sib sau ua ke raws li qhov xav tau ntawm cov qauv sib txawv; Kuj tseem muaj cov kev xav tau rau kev teeb tsa lub cav kiv cua tuaj. Cov kiv cua feem ntau muab faib ua cov pa tawm thiab nqus, uas tsis tuaj yeem thim rov qab, txwv tsis pub nws yuav ua rau cov cua sov tsis zoo thiab kub dhau ntawm lub cav; Rau cov log tsheb nrog cov qauv kev taw qhia, xws li cov log tsheb herringbone qauv, cov cim hauv av tom qab kev teeb tsa yuav tsum ua kom lub pob txha taub hau taw rau sab nraub qaum kom ntseeg tau tias lub zog tsav siab tshaj plaws Rau ob lub log tsheb tau nruab ua ke, cov qauv sib txawv kuj muaj qhov sib txawv, thiab lawv tsis tuaj yeem ntsia tau. ntawm yuav
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"
Yog tias lub log tsheb tau khaws cia rau hauv lub sijhawm ntev thiab tsis tig mus rau lub sijhawm, nws yuav raug deformed vim extrusion thiab cuam tshuam rau lub neej kev pabcuam; Yog tias cov ntawv lim dej ntawm cov cua lim thiab cov roj lim tau nyem, nws yuav ua rau muaj qhov deformation loj thiab tsis tuaj yeem ntseeg tau ua lub luag haujlwm ntawm kev pom; Roj hmab roj foob, daim kab xev daim duab peb sab thiab roj yeeb nkab yuav tsum tsis txhob extruded, txwv tsis pub lawv yuav deform thiab cuam tshuam rau kev siv ib txwm.
9. Fear of "near fire"
Cov khoom siv roj hmab xws li cov log tsheb, daim kab xev daim duab peb sab, lub tog raj kheej liner dej nres lub nplhaib thiab roj hmab roj foob, yog tias ze rau qhov hluav taws kub, yuav yooj yim rau kev laus, deterioration lossis puas. Ntawm qhov tod tes, lawv kuj tuaj yeem ua rau muaj hluav taws kub nyhiab tshwj xeeb, qee lub tsheb diesel nyuaj pib thaum lub caij ntuj no txias. Qee tus neeg tsav tsheb feem ntau siv tshuab tshuab kom sov rau lawv. Peb yuav tsum tiv thaiv cov kab hluav taws kub, roj circuits, thiab lwm yam
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