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Why does shifting suddenly become stiff?

1 Answers
DiAlexander
08/29/25 6:29am

Stiff gear shifting in the transmission is mainly caused by insufficient lubrication or jamming of the gear shift mechanism, shift cable, or shift fork. It could also be due to incomplete clutch disengagement or issues with the transmission synchronizer. Reasons for stiff gear shifting: Transmission rust: Rust on the transmission input shaft prevents the clutch driven disc from moving normally, resulting in poor return and making it difficult to engage gears along the normal path. Clutch malfunction: Due to clutch issues, the clutch disengagement travel is insufficient, leading to incomplete clutch disengagement and difficulty in engaging gears. In such cases, it is recommended to go to a repair shop to adjust the disengagement travel. Excessive self-locking force: Excessive self-locking force on the clutch side makes it difficult to engage and disengage gears. In this situation, it is advisable to visit a repair shop to adjust the clutch cable and gear lock. Transmission plate deformation: The transmission plate of the clutch pressure plate assembly may deform for some reason, causing poor disengagement. In this case, it is necessary to replace the pressure plate with a high-quality one that matches the original vehicle.

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