Clutch plate slippage is one of the common automobile faults, which manifests as interruption of power transmission, weak acceleration or burning odor. The following are the reasons and solutions sorted out from the comprehensive search results:
1. Main reasons
Friction plate wear or contamination
The normal life of the friction plate is 50,000 to 100,000 kilometers, but frequent semi-clutching or congested road conditions will accelerate wear, resulting in reduced thickness, surface hardening or rivet exposure, reducing friction.
Oil contamination (such as transmission oil seal leakage) will reduce the friction coefficient like a lubricant.
Pressure plate spring or pressure plate failure
Spring fatigue, fracture or diaphragm spring deformation will lead to insufficient clamping force, making it impossible for the friction plate to be tightly combined with the flywheel.
Pressure plate deformation, loose flywheel bolts or stuck pressure plate shell will also affect the clamping effect.
Improper operation or adjustment
Too small pedal free travel (or no travel) will cause the release bearing to continuously press the release lever, resulting in a semi-separated state.
Bad driving habits (such as long-term foot pedaling or semi-clutch starting) will aggravate wear.
Failure of hydraulic or mechanical system
Insufficient/deteriorated clutch fluid, leakage of master cylinder piston or deformation of release lever will interfere with power transmission.
2. Solution
Preliminary inspection and adjustment
Measure and adjust the pedal free travel to the standard value (usually 25-35mm) to ensure the clearance between the release bearing and the lever.
Check whether the flywheel bolts and clutch cover fixing bolts are loose, and tighten them.
Clean or replace parts
If the friction plate is oily, clean and dry it with gasoline, and repair the source of oil leakage at the same time.
If it is severely worn (rivets exposed or thickness <0.3mm), hardened or burned, the friction plate needs to be replaced.
When the pressure plate spring fails or the pressure plate is deformed, the pressure plate needs to be replaced as a whole.
Systematic inspection
Check the hydraulic system oil and seals, and replace the failed master cylinder or slave cylinder.
Correct the bent release lever to ensure that it has a normal clearance with the bearing.
Improvement of driving habits
Avoid long-term half-clutch or foot pedal to reduce unnecessary clutch operation.
Note: If the problem cannot be solved by self-checking, it is recommended to send it to a professional repair shop to avoid blind operation and secondary damage. Regularly checking the clutch status (such as observing the friction plate through the inspection hole) can prevent slipping.