With the rapid development of science and technology, with the widespread use of new materials, new technologies , new technology , design and manufacture of automotive greatly improved vehicle fault detection and diagnosis technology without disassembly matured, car repair processes are constantly updated. However , awareness lags behind the development of science and technology , vehicle maintenance there is a great misunderstanding residual impact , according to according to Hengding automobile hub unit learned that there are errors and its performance has the following 16 species:
A sliding bearing pads to be scraped . Modern vehicles, especially small engines , bearing on the crankshaft bearings and connecting rod bearing its wear-resistant alloy coating is thin , never allow scrapers , only press the appropriate size matching. If no suitable sizes song bearing , the method can be used crankshaft grinding hole basis when necessary , in order to achieve proper fit clearance .
2 low engine temperature is not afraid afraid of heights . In fact, modern car engine temperature is low causing great harm , cause incomplete combustion gas mixture , power reduction , increased fuel consumption and cause poor lubrication , can also cause excessive emissions .
3 lash strong and bigger than a small point . In fact, a large valve clearance , valve lift filial open enough, so inadequate intake or exhaust gas poor , precisely reduces engine power.
4 plus the oil the better. In fact, the engine oil adds a still cause harm , ramp -mounted engine and V -type engine is even worse. It is an increase of the crankshaft , connecting rod rolling resistance , and it increased oil splashing on the cylinder wall , resulting in increased combustion of coke . So oil Cadogan , and will reduce engine power , increased wear , can also cause excessive emissions .
5 air hub lubricating unreliable. Grease the wheels stuffed believe , can ensure the lubrication of wheel bearings , bearing only an empty hub coated with lubricating greases are not insured , you must put the hub in the middle of the gap is filled with grease. In fact, doing so is not only a waste grease and bearing cooling influence on bearing lubrication detrimental to .
6 cherry brake drag brake drag to see the quality of printed instructions have locking wheels , while Hyundai Motor is not just the wheels from locking requirements , anti-lock device installed for this purpose . Once the wheels from locking , car steering failure, wheel slip , easy to malfunction, so not drag India as long as possible .
7 Good breaker contact gap dots. In fact, the contact gap is too large, contact closure time is short, the primary side of the ignition coil current is reduced , causing the high-voltage spark is weak, thus causing the engine difficult to start.
8 ignition timing or injection timing rather large not school ignition advance angle is too large, easy to detonate the fuel . The engine knocking , piston damage is great, seriously affecting their life and starting resistance of the engine increases.
9 Do not loose fastening bolts rather tight . In fact, the various components of the bolt car , depending on the diameter , pitch and uses its size tightening torque values have corresponding provisions . Less than the required value of the bolts are loosened certainly bad, but blindly increasing the tightening torque fastening parts will be deformed and cause elongation of the screw thread deformation or fracture .
10 when the car safeguard open inspection was assured. With the improvement of manufacturing standards , modern life has been greatly extended auto parts , free dismantling will disrupt been running good fit state. In the automotive fault detection techniques perfected without disassembly today , if not found parts or assemblies generally do not have obvious faults overhauled .
11 , high engine temperature afraid afraid low .
Do everything possible to find the cause of the high temperature , low temperature and is considered to be normal. In fact, great harm car engine temperature is low , the mixture will not burn fully , power reduction , increase , and cause poor lubrication , can also cause excessive emissions .
12 , add the oil the better.
Think of the engine plus oil rather more not less , add less likely to burn bearing little relationship Cadogan point . In fact, the engine oil adds a still cause harm , ramp -mounted engine and V -type engine is even worse. That increase its crankshaft, connecting rod rolling resistance , but also to make a splash of oil to the cylinder wall on the increase , resulting in increased combustion of coke . So oil Cadogan , and will reduce engine power , increased wear , can also cause excessive emissions .
13 air hub lubricating unreliable.
Grease the wheels stuffed believe , can ensure the lubrication of wheel bearings , bearing only an empty hub coated with lubricating greases are not insured , you must put the hub in the middle of the gap is filled with grease. In fact, doing so is not only a waste grease and bearing cooling influence on bearing lubrication detrimental to .
14 , the contact breaker gap big points better than the small point.
In fact, the contact gap is too large, contact closure time is short, the primary side of the ignition coil current is reduced , causing the high-voltage spark is weak, thus causing the engine difficult to start.
15 , do not loose fastening bolts rather tight .
In fact, the various components of the bolt car , depending on the diameter , pitch and uses its size tightening torque values have corresponding provisions . Less than the required value of the bolts come loose , although bad, but blindly increasing the tightening torque fastening parts will be deformed and cause elongation of the screw thread deformation or fracture .
16 , when the car safeguard open inspection was assured.
With the improvement of manufacturing standards , modern life has been greatly extended auto parts , free dismantling will disrupt been running good fit state to make parts of life is greatly reduced. In the automotive fault detection techniques perfected without disassembly today , if not found parts or assemblies generally do not have obvious faults overhauled .
