What Causes the Zizzing Sound in the Transmission?
1 Answers
Transmission zizzing sound may be caused by bearing wear and damage, abnormal gear meshing clearance, etc. Bearing wear and damage: When a bearing wears, its clearance increases and its fit accuracy decreases; when a bearing is damaged, abnormal noise will be generated due to its inability to operate normally, and may even cause damage to transmission components, leading to further failures. Abnormal gear meshing clearance: Excessive clearance due to wear of transmission components or the use of low-precision replacement parts; excessively tight gear clearance during assembly. Metal peeling on gear tooth surfaces, broken gear teeth, or misalignment during assembly may also cause abnormal noise in the transmission.