A clutch release bearing, also known as a release bearing or thrust bearing, is an integral part of a manual transmission vehicle. It is located between the clutch and the transmission, and is operated by the clutch pedal, the bearing pushes on the pressure plate, which separates the clutch disc between the pressure plate and the flywheel, thus interrupting the transfer of power from the engine to the transmission and allowing for gear shifting.

 Clutch Throw Out Bearing Overview

Clutch Throw Out Bearing Construction and Function

Construction:

- Balls: located between the inner ring and the cage, they reduce the frictional resistance of the bearing and increase its mechanical power.

- Cage: Optimises the load distribution of the bearing by separating the rolling elements.

- Shell: the main part of the clutch release bearing, the rolling elements to play a protective role.

- Inner ring: can be rotated with the bearing, its rolling elements to play a supporting role.

- Spring: used to maintain the stability of the bearing, reduce bearing energy consumption.

Clutch release bearing function:

- Clutch disengagement: when the driver depresses the clutch pedal, the disengagement bearing is activated and pushes the clutch pressure plate backward, separating the clutch disc from the flywheel and interrupting the power transmission from the engine to the gearbox.

- Clutch engagement: when the driver releases the clutch pedal, the release bearing returns to its original position, allowing the clutch disc to re-engage with the flywheel and resume power transmission.

 Cost of Clutch Release Bearing Replacement

The cost of replacing a clutch release bearing varies depending on a number of factors, including vehicle model, parts source, and repair location. Some specific costs are analysed below:

1. Material cost:

   - Domestic vehicles: material costs range from approximately $100 to $400.

   - Imported vehicles: Material costs may be higher, ranging from approximately $400 to $1,500 (50-250USD).

2. Labour hour cost:

   - Outside repair shop: labour hour cost is about between 500RMB and 1,000RMB.

   - 4S shop: the labour hour fee may be higher, approximately between 1000RMB and 1500RMB.

3. Total cost:

   - Domestic car: total cost may range from about 600RMB to 1600RMB (100-250USD).

   - Imported vehicles: total cost could be between $1,400 and $2,200 ($200-350USD).

 Factors affecting the cost of replacing the clutch release bearing

1. Vehicle model: Clutch system design and component costs vary from model to model, with high-end models usually costing more to replace.

2. Brand: the repair cost of luxury brand is usually higher than common brand.

3. Repair location: the repair cost of 4S shops is usually higher than external independent repair shops.

4. Region: Labour costs and parts prices may vary from region to region.

5. Quality of parts: Costs may vary when using original parts or high-quality third-party parts.

Recommendations for Clutch Release Bearing Replacement

1. full inspection:

   - When there is a problem with the release bearing, the vehicle may exhibit noticeable abnormalities, such as a sticking or slipping clutch lever. In order to accurately diagnose the problem, the service personnel will carry out a detailed inspection, including the pressure plate, slave plate, release bearing and other key components.

2. Synchronised replacement:

   - As the failure of the release bearing may affect the performance of the clutch three-piece kit (pressure plate, friction disc and release bearing), it is recommended to consider the replacement of the three-piece clutch kit synchronously when replacing the release bearing to ensure the normal operation of the vehicle.

3. Choose professional maintenance:

   - In order to ensure driving safety and stable vehicle performance, it is recommended to choose professional maintenance service for replacement. Professional maintenance personnel have rich experience and professional skills, which can ensure the accuracy and safety of the replacement process.

Precautions after clutch release bearing replacement

1. Check the integrity of the clutch system:

   - Ensure that all components are correctly installed: make sure that the release bearing, clutch release lever, clutch disc, pressure plate and other components are correctly installed and fastened in place.

   - Check the hydraulic system: if it is a hydraulic release bearing, make sure that there is no leakage from the slave cylinder and hydraulic line, and that the seals are intact.

2. Adjust the clutch pedal free travel:

   - Measure free travel: Use a special tool or ruler to measure the free travel of the clutch pedal to make sure it meets the manufacturer's recommended standards.

   - Adjusting the free travel: If the free travel does not meet the standard, it needs to be adjusted. This can usually be achieved by adjusting the clutch cable or the adjusting nut of the hydraulic system.

3. Test the clutch operation:

   - Manual test: manually depress and release the clutch pedal while the vehicle is not moving to ensure smooth operation without abnormal noise.

   - Dynamic test: start the vehicle, put it into gear and slowly release the clutch pedal to ensure smooth clutch engagement without slipping or shaking.

4. Listen for noise:

   - Check for noise: During the static and dynamic tests, listen carefully for abnormal noises such as whistling, clicking or grinding. These noises may indicate a problem with the release bearing or other components. 

5. Check clutch pedal height:

   - Make sure the pedal height is consistent: After replacing the release bearing, make sure the clutch pedal height is the same as before the replacement to avoid operating difficulties due to the change in height.

6. Regular inspection and maintenance:

   - Check lubrication: If it is a mechanical release bearing, make sure the bearing is well lubricated and add lubricant regularly.

   - Check the follower cylinder seals: If it is a hydraulic release bearing, check the follower cylinder seals regularly to make sure there is no leakage.

7. Pay attention to driving habits:

   - Avoid prolonged semi-coupling: prolonged semi-coupling operation will increase the burden on the clutch system and accelerate the wear of the release bearing.

   - Smooth start and shift: Avoid rapid acceleration and braking, try to start and shift smoothly to reduce the impact of the clutch system.

8. Record replacement information:

   - Record the date of replacement and mileage: Record the date of release bearing replacement and vehicle mileage for future reference and maintenance.

   - Keep invoices and warranty vouchers: Keep invoices and warranty vouchers for replacement parts for future reference and maintenance.

9. Observe vehicle performance:

   - Watch out for abnormal behaviour: Within a few days after replacement, watch out for the vehicle's driving performance and return it for repair promptly if there are any abnormalities.

10. Follow the manufacturer's recommendations:

    - Read the service manual: Read the vehicle service manual carefully and follow the manufacturer's recommendations on clutch system maintenance and repair.

By taking these precautions, you can ensure that the newly replaced clutch release bearing works properly, extends its service life, and ensures the driving safety and performance of your vehicle.