Automobile clutch release bearing 3100002255

clutch release bearing Introduction:
The clutch release bearing is installed between the clutch and the transmission. The release bearing seat is loosely sheathed on the tubular extension of the bearing cover of the first shaft of the transmission. Through the return spring, the shoulder of the release bearing is always against the release fork and retreats to the final position, maintaining a clearance of about 3 ~ 4mm with the end of the release lever (release finger).

Working conditions
Release bearing
During use, it is affected by axial load, impact load, and radial centrifugal force during high-speed rotation. In addition, because the fork thrust and the reaction force of the separating lever are not in the same straight line, a torsional moment is also formed. The clutch release bearing has poor working conditions, intermittently rotating at high speed and bearing high-speed friction, high temperature, poor lubrication conditions, and no cooling conditions.
Cause of damage
The damage of the clutch release bearing has a lot to do with the operation, maintenance and adjustment of the driver. The reasons for the damage are roughly as follows:
1) The working temperature is too high to produce overheating
Many drivers often half-depress the clutch when turning or decelerating, and some have their feet on the clutch pedal after shifting; some vehicles have too much adjustment of the free stroke, which makes the clutch disengagement incomplete and in a semi-engaged and semi-disengaged state. A large amount of heat generated by dry friction is transferred to the release bearing. The bearing is heated to a certain temperature, and the butter melts or dilutes and flows, which further increases the temperature of the release bearing. When the temperature reaches a certain level, it will burn out.
2) Lack of lubricating oil and wear
The clutch release bearing is lubricated with grease. There are two ways to add grease. For the 360111 release bearing, the rear cover of the bearing should be opened and filled with grease during maintenance or when the transmission is removed, and then reinstall the back cover. Just close; for the 788611K release bearing, it can be disassembled and immersed in molten grease, and then taken out after cooling to achieve the purpose of lubrication. In actual work, the driver tends to ignore this point, causing the clutch release bearing to run out of oil. In the case of no lubrication or less lubrication, the amount of wear of the release bearing is often several to several tens of times the amount of wear after lubrication. As the wear increases, the temperature will also be greatly increased, so that it is more vulnerable to damage.

1) In accordance with the operating regulations, avoid the clutch half-engaged and half-disengaged state, and reduce the number of times the clutch is used.
2) Pay attention to maintenance. Use the steaming method to soak the butter so that it has sufficient lubricant during regular or annual inspection and maintenance.
3) Pay attention to leveling the clutch release lever to ensure that the elastic force of the return spring meets the requirements.
4) Adjust the free stroke to meet the requirements (30-40mm) to prevent the free stroke from being too large or too small.
5) Minimize the number of joining and separation, and reduce the impact load.
6) Step on lightly and easily, so that it can be joined and separated smoothly.

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