駆動系

The drivetrain is the group of parts that transfers engine power to the wheels of a commercial vehicle. It includes the clutch that connects and disconnects the engine, the flywheel and its starter ring gear, and the shafts, joints, and bearings that carry torque to the axles. This category groups those components so the right part can be found for each model.

When the engine runs, the flywheel passes its rotation through the clutch to the gearbox, and from there a propeller shaft with universal joints carries the torque to the drive axle. The joints let the shaft change angle as the vehicle moves, while support bearings hold the shaft steady and reduce vibration. Together these parts deliver power smoothly while absorbing the shocks of a loaded vehicle.

Drivetrain parts wear through friction, vibration, and heavy load. Common signs include vibration, clunking or grinding noises, difficulty shifting, and a loss of smooth power delivery. Because a worn part in one place can damage others nearby, symptoms should be inspected early by a qualified technician. Many of these parts are serviced together when the gearbox or clutch is opened up.

The right drivetrain part depends on the vehicle model, the gearbox and clutch type, and the shaft and joint dimensions. Use the categories below to find the specific component, and confirm each part against the vehicle specification before fitting.