The clutch throw-out bearing, also known as the clutch release bearing, is a key component located between the clutch and the transmission. Its main function is to eliminate direct friction between the high-speed rotating clutch pressure plate and the fork when the clutch pedal is depressed, ensuring smooth power cutoff. Specifically, the clutch release bearing interrupts the power transmission from the crankshaft by pushing the pressure plate to separate from the friction plate, thus realizing the clutch release function.

The operating principle of the clutch release bearing involves the conversion of friction and force. When the driver depresses the clutch pedal, hydraulic pressure is generated in the clutch master cylinder, which transmits the pressure to the clutch slave cylinder, which in turn activates the clutch release bearing. Subsequently, the release bearing moves toward the diaphragm spring, which presses the pressure plate toward the clutch disc to disengage the clutch.

When the throwout bearing (also known as the clutch release bearing) in a manual transmission fails, it can lead to a number of problems that affect the drivability and safety of the vehicle. The following are the main effects:

1. unusual noises: the most immediate manifestation is the production of unusual noises such as squeaks, grinds or clicks, which are particularly noticeable when the clutch pedal is depressed.

2. Difficulty in operating the clutch pedal: The operation of the clutch pedal becomes difficult and may feel like increased resistance or a longer pedal stroke, affecting the normal engagement and disengagement of the clutch.

3. Shifting problems: Shifting becomes difficult, possibly due to the clutch not being able to completely disengage, making it difficult for the gears to mesh properly, resulting in rough or abrupt shifts.

4. Clutch slippage: In extreme cases, poor contact between the clutch plate and pressure plate may cause the clutch to slip, affecting the vehicle's acceleration and starting ability.

5. Transmission system abnormality: Increases transmission system vibration and noise, reduces transmission efficiency, and further affects driving performance and ride comfort.

6. Changes in clutch pedal feel: The clutch pedal stroke, hardness or engagement point may change, making it difficult for the driver to accurately judge the clutch engagement state.

7. Potential total failure: If the throwout bearing fails completely, the clutch may be unable to respond to the driver's operation, resulting in an inability to shift gears or start the vehicle, posing a threat to the safety of the driver and passengers.

8. Increased maintenance costs: Failure to address the problem in a timely manner may result in additional wear and tear on other clutch components (e.g. clutch disc, pressure plate), increasing maintenance costs and complexity.

To address these issues, vehicle owners are advised to go to a professional auto repair store or 4S store for inspection and repair as soon as they notice any abnormal symptoms. During the repair process, high-quality parts and professional repair techniques should be used to ensure the quality of repair and the recovery of vehicle performance. Meanwhile, vehicle owners should also regularly service and maintain their vehicles to minimize the probability of breakdowns and prolong service life.