Throwout Bearing (Clutch throwout bearing) Installation Guide

 I. Throwout Bearing Overview

What is a Throwout Bearing?

The Throwout Bearing (also known as clutch release bearing or thrust bearing) is a key component in the automotive clutch system. It is located between the clutch pressure plate and the release fork, and is responsible for pushing the pressure plate when the clutch pedal is pressed to separate the clutch plate from the flywheel, thus cutting off the power transmission between the engine and the drivetrain, allowing the driver to shift gears smoothly.

Clutch Throwout Bearing Function:

- Separates the Clutch Pressure Plate: when the clutch pedal is depressed, the Throwout Bearing pushes the Clutch Pressure Plate, which separates it from the flywheel, permitting gear shifts.

- Reduces Friction and Wear: Helps extend the life of other clutch components (e.g., clutch plate, pressure plate, etc.) by reducing friction during clutch operation.

 II. Preparation of Tools and Materials for Throwout Bearing Installation

Before starting the installation, make sure you have the following tools and materials ready:

1. Basic tools:

   - Wrench and socket tools: for removing and installing transmission and clutch components.

   - Jacks and safety braces: for lifting and securing the vehicle.

   - Screwdrivers, pliers, etc.: for removing and installing small parts.

2. Specialized tools:

   - Clutch Alignment Tool (Clutch Alignment Tool): used to ensure that the clutch disc and flywheel are properly aligned.

   - Bearing Installation Tool: such as a press-in tool or a special socket, used to put the new bearing in place correctly.

   - Bearing Heater (if required): For large bearings with an interference fit, it may be necessary to use a heater to bring the bearing to the proper temperature before installing.

3. lubricant:

   - Grease (for non-hydraulic bearings): Apply a moderate amount to the mounting location of the bearing to minimize friction and avoid premature wear.

   - Hydraulic oil (for hydraulic release bearings): Make sure the oil in the hydraulic system is sufficient and clean.

4. New throwout bearing: 

make sure to select a new high quality bearing suitable for your model.

5. Other parts that may need to be replaced:

   - Clutch plate, pressure plate, flywheel, etc. If these parts are worn or damaged, it is recommended to replace them at the same time.

 Third, Clutch throwout bearing installation steps

 1. Preparation

- Disconnect the negative terminal of the battery: to ensure safety and prevent short circuit of the electrical system.

- Lift the vehicle: Use a jack to lift the vehicle and support it with safety stands to ensure that it is stable.

- Clean the work area: Clean the clutch area thoroughly to ensure there is no dust, grease or other contaminants to avoid contaminating the new bearing.

 2. Disassemble the transmission and clutch assembly

- DISASSEMBLY TRANSMISSION SHAFT: If applicable, disassemble the driveshaft first to allow easier access to the clutch system.

- TRANSMISSION REMOVAL: Remove the connection between the transmission and the engine, including components such as the transmission support, attachment bolts, and clutch operating lever.

- REMOVE CLUTCH COVER AND PRESSURE PLATE: Remove the clutch cover and pressure plate to expose the old throwout bearing.

 3. Remove the old Throwout Bearing.

- Locate the original throwout bearing: it is usually located between the clutch pressure plate and the input shaft.

- Carefully remove the old bearing: Use an appropriate tool (such as a screwdriver or special tool) to gently pry out the old bearing. If the bearing is stuck, you can loosen it by tapping on it, but avoid using too much force to avoid damaging other components.

 4. Check other clutch components

- Check the flywheel, pressure plate and clutch disc: make sure these parts are in good condition and replace them if necessary. In particular, if significant wear or damage is found, it is recommended that these parts be replaced at the same time to ensure that the entire clutch system is working properly.

 5. Install new Throwout Bearing

- Lubrication: If a non-hydraulic bearing is used, apply an appropriate amount of grease before installation to ensure that the bearing can rotate smoothly. For hydraulic bearings, make sure the oil in the hydraulic system is clean and plentiful.

- Installing the new bearing: Install the new throwout bearing in its original position, making sure it is properly aligned with the clutch pressure plate or operating shaft. In the case of a floating bearing, make sure that the bearing is able to move freely without any obstruction; in the case of a fixed bearing, make sure that it is securely mounted in the designated position on the pressure plate or operating shaft.

- Use special tools: If a press-in tool or bearing heater is used, follow the manufacturer's instructions to ensure that the bearing is fitted in place and is evenly stressed.

 6. Reinstalling the Clutch Assembly and Transmission

- Using the clutch alignment tool: align the clutch disk with the flywheel, making sure the alignment between the two is accurate.

- Install the clutch pressure plate: Install the pressure plate back in place and tighten the bolts to the specified torque value using a torque wrench to ensure even pressure on the pressure plate.

- Reconnect the transmission: reinstall the transmission to the engine, making sure all bolts and connections are tight. Check the transmission input shaft for smooth contact with the flywheel and clutch system to ensure that there is no sticking or abnormality.

 7. Testing and Adjustment

- Depressing the clutch pedal: After the installation is complete, depress the clutch pedal and check for any abnormal resistance or noise. Make sure that the pedal feels normal in operation and that the clutch can be disengaged smoothly.

- Test drive: Start the car and drive it for a short distance to test whether the clutch disengages smoothly and whether the gear shifts are smooth. Note if there is any abnormal noise or vibration.

- Adjusting the clutch pedal: If the clutch pedal feels soft or hard, fine-tune it to ensure proper clutch disengagement. Adjust the pressure of the clutch cable or hydraulic system according to the vehicle manufacturer's instructions.

 IV. Work to be done after installation

1. Check clutch operation: Start the vehicle and depress the clutch to check if the pedal operation feels normal and smooth.

2. Check the shifting effect: carry out a test drive to check whether the transmission shifts smoothly and make sure that the clutch disengages and combines normally.

3. Check for oil leakage: Make sure there are no missing or damaged seals during installation to prevent oil leakage at the hydraulic system or bearings.

4. Cleanup and Inspection: Clean up the environment under the vehicle and check if there are any tools, parts or other problems left behind.

5. Break-in: The newly replaced clutch system may need some time to break-in. Avoid driving aggressively at the initial stage and gradually allow the components to adapt to the new working condition.

6. Regular inspection: During subsequent vehicle maintenance, inspect the clutch system regularly to ensure that the release bearing and other components are working properly.

Summarize:

The Clutch Throwout Bearing is a very important part of the clutch system and is responsible for pushing the pressure plate when the clutch is disengaged, thus making gear shifting possible. The process of installing the throwout bearing involves disassembling the transmission and clutch system, and after installing the new bearing it needs to be tuned and tested to ensure that the clutch system is working properly. Correct installation and commissioning will ensure stable operation of the clutch system and avoid difficult shifting or clutch failure caused by bearing problems.