The Cause Of Abnormal Noise From Excavators

1、Abnormal Noise Of The Main Bearing, The Engine Is Vibrating, The Main Journal And The Bearing Are Loose, The Main Bearing Cannot Get Good Lubrication Effect, The Combustion Is Poor, The Crankshaft Is Bent Or The Axial Clearance Is Large

2、The Idle Speed Of The Engine Is Very Large, The Camshaft Is Abnormal, The Axial Clearance Of The Camshaft Is Too Large, Or The Camshaft Is Loose.

3、Abnormal Noise Of Engine Valve Presser Foot, Wear Or Improper Adjustment Of Valve Train Components, Too Large Gap Between Valves, Lack Of Lubrication Of Valve Train

4、Abnormal Noise At Idle Speed Of The Engine, Humming Sound At Medium And Low Speed, Poor Lubrication Or Improper Matching Between Bearings, Poor Bearing Quality Or Loose Installation Clearance, Or Alloy Falling Off Due To Deformation Of Bearing Parts, And Can Not Be In Contact With The Bearing

5、The Engine Hydraulic Lifter Makes Abnormal Noise, The Oil Level Of The Engine Is Too High Or Too Low, The Hydraulic Lifter Lubricating Oil Is Insufficient, And The Hydraulic Lifter Fails.

6、Abnormal Sound Of The Timing Gear Of The Excavator: The Timing Gear Is Worn Or Improperly Assembled, Making The Meshing Clearance Too Large Or Too Small, The Crankshaft And The Camshaft Centerline Are Not Parallel, The Camshaft Timing Gear Is Loose Or Poorly Lubricated, The Camshaft Timing Gear Teeth Fracture Or Radial Fracture Of Gear.