Diesel engine failure, the general speed, sound, exhaust, water temperature, oil pressure and other aspects will show some signs of abnormalities, that is, fault pre-light characteristics. So the operator should be based on the characteristics of the signs quickly make the right judgments, decisive to take measures to avoid accidents.

1, crusher failure warning signs characteristics of the tank is a devastating mechanical failure, in addition to the valve down the cylinder caused by ramming the tank, mostly due to Baotou North Mercedes-Benz accessories connecting rod bolts caused by loose, connecting rod bolts loose or stretch , The connecting rod bearing with the gap increases, then in the crankcase parts can be heard “blah” of the percussion, percussion from small to large, the last connecting rod bolts completely off or broken, connecting rod and bearing cover Throw out, break the body and related parts.

Treatment: immediately stop maintenance, replacement of new pieces.

2, Baotou North Mercedes-Benz accessories burner failure signs of the characteristics of diesel engine work in the speed suddenly reduced, the load increased, the engine black smoke, oil pressure drop, crankcase “chirp” dry friction sound.

Treatment measures: immediately stop, dismantle check connecting rod bearing, identify the cause, repair replacement.

3, broken shaft failure omen characteristics When the diesel engine crankshaft journal shoulder due to fatigue caused by hidden cracks, the fault symptoms are not obvious, with the expansion of the crack increased, Baotou North Mercedes-Benz accessories engine crankcase issued a dull pounding , The speed changes when the percussion, the engine black smoke, and soon, the percussion gradually increased, the engine jitter, crankshaft fracture, then turn off.

Treatment measures: found signs of immediate shutdown check and found that cracks should be promptly replaced crankshaft.

4, “Speed” signs of signs of “speed” before the diesel engine will generally appear to take blue smoke, burning oil or speed instability phenomenon.

Handling measures: First, the throttle to stop the oil supply, and step down the brakes; Second, plug the intake pipe, cut off the air into the three; the third is to quickly release the high-pressure tubing to stop the oil; Fourth, the vehicle can be used in high-load heavy diesel load (Brake), so that the engine due to lack of friction and flameout.

5, sticky cylinder failure warning signs characteristics of the cylinder in the case of serious shortage of diesel engine occurred, sticky cylinder front engine running weak, water temperature table indicates more than 100 ℃, to the body drops a few drops of cold water, a “hissing” And take white smoke, water droplets quickly evaporate.

Treatment: idle for some time or turn off the crank crank to help cool, so that the water temperature dropped to about 40 ℃, and then slowly add cooling water. Be careful not to immediately add cooling water, otherwise it will lead to mechanical parts due to sudden drop in local temperature and deformation or crack.