North Ben V3 parts piston ring abnormal sound
Piston ring knocking is blunt and dumb “flap” sound. The change of sound is characterized by the increase of the speed and the increase of the sound.
The reason
Piston ring fracture.
The piston ring groove carbon ring end gap too much or too small. When the temperature rises without expansion, the piston ring stuck in the ring slot or cylinder.
The piston ring and the ring groove wear too much, the backlash, backlash and the gap is too large.
The cylinder wear after the formation of the shoulder in the cylinder mouth, if the repair is not standardized, the piston moves up the piston ring and the convex shoulder touching, abnormal sound.
The diagnosis and treatment methods
The North-Benz V3 accessories when the engine is running, open the machine cover observation with oil smoke, then gradually cut off oil cylinder, if it is found that the smoke reduced or disappeared, the sound disappears, then that is the piston ring groove wear too much, or piston ring fault, should be timely maintenance.
If off the oil test sound did not change, but with the screwdriver head conflict site, there is a clear sense of vibration, is the piston ring cylinder wear a collision of the shoulder and the sound. This should be re – cylinder, so as to avoid the piston ring fracture.
In the hot car inspection, from beiben V3 accessories installation of the injector outlet to inject a small amount of oil, rotate the crankshaft, and then replace the injector test machine, a short period of time if the sound is weakened or disappeared, the piston ring and cylinder wall sealing side. If the injection of oil, the oil is still from the mouth of smoke or even more, can be diagnosed as piston ring or piston ring loses its elasticity in the ring groove, which should be maintained, thoroughly remove coke.