▊When the excavator turns, the differential sound is obvious. When the straight-line driving speed of the excavator reaches 15 ～ 20km / h, if there is the sound of en-en, the louder the louder the higher the speed, and there will be rattling and rattling when turning. In serious cases, the driving axle will shake.
Reason: This is due to the excessive meshing clearance between the planet gears and the side gears, severe wear of the tooth surfaces of the planet gears and the side gears, or gear breakage. A spacer with an appropriate thickness should be selected to adjust or replace the damaged gear.
▊If the excavator is driving at a low speed, especially when turning, the sound of slaps and slaps will appear, but after the driving speed is increased, the noise will generally disappear.
Reason: This is due to severe wear or breakage of the cross shaft journal. The cross shaft should be replaced.
▊When the excavator straightly adjusts its driving, there is a humming sound. When the speed decreases, the squeaking sound is serious. When turning, it turns into an humming sound, which is caused by tooth surface scratches.
Treatment: slight abrasions can be corrected with whetstones or files. In severe cases, the gears should be replaced.
▊When the excavator is driving straight and turning, the noise of the bevel gear is relatively obvious. The reason is that the gear mesh clearance is too small and the gear mesh clearance is uneven.
▊If the excavator has a rhythmic rattling and rattling impact sound when driving, it is more obvious when the speed change is unstable, but when the driving speed is quite stable, the noise will disappear. This situation is caused by the gear meshing.
to sum up If you encounter abnormal noises during the walking and running of the above several excavators, you must be seated correctly and distinguish carefully, because the excavator is located in a noisy and roaring construction site, and there is a certain amount of judgment for everyone. influences.
In addition, overhaul is not the most effective solution. After all, labor and financial distress need to lose a lot of time, so the daily maintenance work can only solve the abnormal noise problem! I hope you always remember.
