What Causes Gear Slippage?

[VanPreston]

Gear slippage in vehicles is primarily caused by wear, looseness, damage to transmission components, or improper adjustment of mating clearances. The causes of gear slippage are analyzed as follows: 1. Wear, looseness, breakage, or loss of the gearshift lever positioning pin, resulting in loss of control and random swinging. 2. Corrosion and failure of the gearshift fork shaft interlock device; excessive wear and looseness of the gearshift lever ball head. 3. Conical wear of gears, gear rings, or gear sleeves along the tooth length direction, causing disengagement due to axial forces generated during operation. 4. Excessive corrosion of components such as gearshift fork shaft grooves and locking pins, bending deformation of shift forks, or excessive wear between working surfaces and gear ring grooves. 5. Loosening of the rear axle fixing nut on the second shaft, leading to axial movement of the second shaft. 6. Loosening or disintegration of synchronizer locking pins, resulting in failure of conical surface operation.