Baotou beiben diesel engine main bearing and connecting rod in use as long as pay attention to the brand of oil, regular maintenance, correct operation, there is no problem. However, due to the use of improper maintenance, can also cause the rod bearing abnormal sound phenomenon.
Connecting rod bearing noise performance:
Baotou beiben parts of the engine speed up suddenly when the continuous obvious percussion sound, sound is ringing, a short, solid, noise increases with the engine speed increases, and increase with the load;
The sound does not change much when the engine temperature changes;
In the idle speed and medium speed operation, can hear “Leng” sound;
The broken oil test, noise significantly weakened.
There are several reasons for the failure:
Bad lubrication. The gap with the axle neck and bearing does not meet the standard. Wrong grade oil, adding ordinary diesel engine oil caused by poor lubrication, causing bearing wear faster, so that the tile burning. Then the oil pipeline problem, there has been a large number of leaks, causing the engine to burn tile.
The big hole wear, bearing to go round, blocking oil eye, neck contact ellipse, bearing and shaft neck.
The Baotou beiben heavy duty truck accessories bearing quality or installation problems, so that the elastic deformation of lead alloy and tile burning off.
The connecting rod bearing abnormal sound judgment as follows:
Cylinder off oil test. From idle to medium speed, jitter throttle, noise increases with the engine speed increases. Gently shake the throttle, can hear “Leng” sound, and the sound in the gas instantaneous outburst, oil break noise decreases, the moment the noise increased oil recovery. Hear this voice, can be judged as a connecting rod bearing ring;
Remove the oil filler cap, can hear the strong “clicked” knocking;
The vehicle is in operation, the throttle upshift or downshift by fierce refueling, the engine is heard “clicked” percussion sound.
The three is the tile burning failure, but also no crankshaft locking, can continue to turn voice. If Ji suddenly heard in the vehicle operation, pumping “sound, is due to a lack of lubrication bearing burning sound, should immediately stop processing or repair, crankshaft locking, difficulty increases, the cost will increase.