Baotou North Ben heavy truck accessories engine timing gear room abnormal

Compared with the gasoline engine, the diagnosis of diesel engine noise is more difficult to grasp, which is determined by the structural characteristics and working characteristics of the diesel engine, such as high compression ratio, heat load, rough work, noise, oil can not be completed instantly , And even some of the diesel engine machine at the mouth of the location makes it difficult to close, to the abnormal sound of the diagnosis also brought inconvenience. However, the unusual sound of the diesel engine also has its specific laws, as long as repeated analysis and comparison, see the phenomenon of grasping the essence, can find its regularity. North of the Mercedes-Benz accessories valve tappet ring tense ring is characterized by the engine idling operation, hear the valve gap is too large to produce a “blah” sound, sound crisp and rhythmic, when the temperature changes or a single cylinder off the oil Test, the sound does not change, but the speed can be weakened or disappeared.

⑴ reason

① valve putter bending deformation.

② Baotou North Ben heavy truck accessories tappet and tappet hole wear serious, resulting in roundabout and large gap.

⑵ diagnosis and treatment methods ① inspection, remove the valve compartment cover, hand hold down the side of the cylinder side of the push rod side and the direction of rotation to the camshaft to give the appropriate lateral force, so that the upper and lower movement to reduce the swing The And then listen carefully, the sound is reduced or disappeared for the tappet ring.

(3) found Baotou North North heavy truck accessories tappet ring, first check whether the deformation of the putter, if the deformation should be corrected or replaced. When replacing a new piece, you must pay attention to the quality check. When the putter is in good condition, check the roundness of the tappet and the tappet hole, whether the cylinder or the clearance is too large. Should be promptly repaired, and the oil pipeline to check, maintenance.