What are the causes of gear disengagement?

1 Answers
LaMargaret
07/29/25 11:50am
Gear disengagement occurs due to the following reasons: 1. Worn, loose, broken, or missing shift lever locating pins, causing the lever to swing uncontrollably; 2. Worn-out or failed interlock mechanism of the shift fork shaft; excessive wear and looseness of the shift lever ball head; 3. Conical wear of gears, gear rings, or gear sleeves along the tooth length, leading to disengagement under axial forces during operation; 4. Excessive wear of shift fork shaft grooves, locking pins, and other components; bent or deformed shift forks, or excessive wear between working surfaces and gear ring grooves; 5. Loose rear axle fixing nut of the second shaft, causing axial movement of the second shaft; 6. Loose or disassembled synchronizer locking pins, resulting in ineffective cone surface operation.
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