Can You Keep Driving with a Noisy Release Bearing?
3 Answers
You cannot continue driving with a noisy release bearing. The causes of a noisy release bearing are as follows: 1. Poor Lubrication: Insufficient grease inside the bearing leads to inadequate lubrication between the bearing raceways and balls, requiring timely replenishment of lubricant. 2. Aging of Diaphragm Spring and Bearing Inner Ring: After prolonged use, the elasticity of the diaphragm spring significantly decreases, and the bearing inner ring may also sag, causing contact between the outer and inner rings. The aging spring and inner ring need to be replaced promptly. 3. Excessive Friction Between Bearing Inner Ring and Diaphragm Spring: If the inner ring and diaphragm are installed too tightly, significant friction can occur. Adjusting the tightness between the bearing inner ring and the diaphragm may be necessary. 4. Inadequate Cleaning Inside the Release Bearing: If the bearing is not cleaned properly, rotation may become stiff, leading to noise. Regular cleaning of the bearing inner ring and proper maintenance are essential.
I've driven a taxi for over twenty years, so I know exactly what a failing release bearing sounds like. That noise is like metal scraping against sand—clickety-clack. If it makes noise when you press the clutch pedal but stops when you release it, nine times out of ten, the release bearing is worn down. Don't tough it out—I've seen several old-timers hesitate to fix it, only to suddenly find the clutch pedal stuck on an overpass, sweating bullets. The repair isn't actually expensive—just a few hundred bucks for the bearing and labor. But if you wait until it ruins the pressure plate, you'll have to pull the transmission, doubling the labor cost, not to mention the tow truck fee if you break down mid-drive—enough to cover two repairs. When it comes to driving safety, cutting corners just isn't worth it.
Last time at the track day, I heard a car making a clicking noise, which was clearly a problem with the release bearing. This part sits behind the clutch pressing against the pressure plate and mainly relies on grease to function. Once there's abnormal noise, it means the internal balls are worn out, and the clearance has increased. Short-term low-speed driving might be fine, but during aggressive driving when the clutch disengages frequently, the poorly lubricated bearing will heat up rapidly. In the worst case, it could seize directly, causing clutch failure. It's recommended to get it checked and repaired as soon as possible. When replacing, prioritize ceramic bearings—though they cost about a hundred more, they have better high-temperature resistance. Also, have the mechanic check if the clutch fork is deformed, as it bears significant force and is prone to bending.
