What's the reason for the abnormal noise when shifting gears in the Haval Big Dog transmission?

[McKendra]

There are many reasons for abnormal noise when shifting gears in the Haval Big Dog transmission, including bearing abnormalities, abnormal lubrication conditions, and transmission abnormalities. Bearing abnormalities: When a bearing wears out, its clearance increases, and its fitting precision decreases. When a bearing is damaged, it cannot operate normally, resulting in abnormal noise and even damage to the transmission components inside the gearbox, causing the noise. Abnormal lubrication conditions: Insufficient lubrication oil or excessively high viscosity can lead to poor lubrication. In this case, the corresponding lubricating oil (grease) should be replaced; otherwise, it will accelerate the wear of the transmission and shorten its service life. Transmission abnormalities: The bolts on the transmission housing (end cover) may be loose. Vibration during use can cause the bolts to loosen, so they should be checked regularly.