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What are the symptoms and causes of gear disengagement?

1 Answers

StElena

07/29/25 10:04pm

1. Symptoms of gear disengagement: During acceleration, deceleration, climbing, or when the vehicle experiences severe vibration, the gear lever automatically jumps back to the neutral position. 2. Causes of gear disengagement: The steel ball of the self-locking device fails to enter the groove, or the gears do not fully engage after shifting; severe wear of the steel ball or groove in the self-locking device, or the self-locking spring is fatigued, too soft, or broken; the gears are worn into a conical shape along the length; excessive looseness of the first and second shaft bearings, causing misalignment of the first shaft, second shaft, and crankshaft axes, or changes in the perpendicularity of the transmission case and clutch case joint plane relative to the crankshaft axis; excessive axial or radial clearance of the constant-mesh gear on the second shaft; excessive axial or radial clearance of the shafts.

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