What Causes a Car to Jump Out of Gear?

[MacGemma]

The reasons for a car jumping out of gear are as follows: 1. The gearshift lever positioning pin is worn, loose, broken, or missing, causing it to lose control and swing freely; 2. The interlock device of the shift fork shaft is corroded and fails, or the ball head of the gearshift lever is excessively worn and loose; 3. The gears, gear rings, or gear sleeves are worn into a conical shape along the tooth length, causing them to disengage under the axial force generated during operation; 4. The synchronizer lock pin is loose or disassembled, causing the cone surface to fail. The solutions for a car jumping out of gear are: 1. Check whether the gearshift lever positioning pin is worn, loose, broken, or missing; 2. Inspect whether the interlock device of the shift fork shaft is corroded and fails; 3. Check if the synchronizer lock pin is loose or disassembled.