The car must be the most common means of transportation in our daily life, and it is also one of our most important means of transportation. So for such an important means of transportation, do we all understand the car. For example, how can we solve the problem of abnormal noise of automobile clutch! today small make up for you to introduce it.
Automobile clutch abnormal sound: clutch abnormal sound fault reason
① The release bearing is short of oil and sounds
② The release bearing is damaged and sounds
③The matching clearance between the pressure plate and the drive pin in the double-disc clutch is too large
④ The matching clearance between the key tooth of the driven disc hub and the key tooth of the first shaft is too large.
⑤ Loose rivets of driven disc hub
Automotive Clutch Abnormal Sound: Diagnostic Method for Clutch Abnormal Sound Barrier
Put the transmission in the neutral position, let the engine run at idle speed, step on or release the clutch pedal (disengage or engage), the noise is more obvious when the car is not moving.
Clutch abnormal sound: Clutch abnormal sound troubleshooting
①Lightly step on the clutch pedal, and when the clutch release bearing and the release lever are in contact, there is an obvious "rustling" sound
It can be judged that the clutch release bearing is ringing. At this time, you can add grease to the release bearing. If it still sounds after adding grease, the release bearing is damaged.
If the release bearing is stuck or the axial clearance is too large, replace the bearing with a new one. If the wear of the inner race of the bearing is more than 0.3mm and the whole bearing freewheels on the release sleeve, replace the bearing and release sleeve.
② Step on the clutch pedal and make a "rushing" metal friction sound
Remove the flywheel housing and observe. If there are ablation marks or sparks at the contact between the clutch release bearing and the release lever, it means that the clutch release bearing does not rotate or is damaged, and the bearing should be replaced.
③When the engine is idling, the clutch has a "crash" sound
Slightly step on the accelerator, there is no change in the noise, which may be caused by the break of the separation lever screw, and the damaged part should be replaced.
④When the engine is idling, the clutch has a "cuckling" impact sound
The noise at medium speed or above is weakened or disappeared, and then the clutch pedal is stepped on, and the noise also disappears, indicating that the clutch friction plate rivet is loose or the keyway of the driven disc is worn. In this case, the bottom cover of the flywheel housing (or clutch chamber) can be removed. When the engine is turned off, the transmission is put in gear, step on the clutch pedal, and use a screwdriver to turn the driven disc to check whether there is a gap in the keyway. If the clearance is large, repair it or replace it with a new one.
⑤ If you hear noise or intermittent knocking when the clutch pedal is fully raised
The reason for this may be that there is no clearance between the clutch release bearing and the release lever. At this time, adjust the free stroke of the clutch pedal, that is, there is no gap between the release bearing and the release lever. It may also be that the return spring is soft, broken, stretched, falling off, etc., which causes the release bearing to slide freely and contact the release lever, and should be repaired or replaced as appropriate.
