What's the reason for the noise when shifting gears?
1 Answers
The reasons for noise when shifting gears are as follows: (1) Damage to the transmission housing: Long-term wear and deformation of the transmission housing and bearing seat holes. This noise is loudest when shifting into low gears, gradually decreasing as higher gears are engaged, with the direct gear being the quietest. (2) Due to the fracture of individual gear surfaces, causing impact during meshing: When shifting into that gear, strong impacts and vibrations occur, leading to resonance in the transmission housing. (3) Improper transmission assembly: Incorrect replacement of gears or needle bearings and bushings in a certain gear, or abnormal assembly clearances, resulting in poor gear meshing and abnormal noise during transmission in that gear.