What is the cause of clutch slippage?

The free stroke of the clutch pedal is too small, and the release bearing is often pressed on the pressure plate, resulting in the clutch being in a state of semi-separation and half-engagement, and the compression force of the pressure plate is reduced, which will lead to clutch slippage for a long time; The clutch diaphragm spring elasticity is reduced or broken, the compression force is reduced, and the clutch is in a state of wear for a long time, resulting in slippage; Oil leakage from the gearbox or oil seal after bending, resulting in oil stains on the clutch friction plate, and the friction will be reduced, and the clutch will slip and fail;

1. Clutch diaphragm breakage: If the clutch diaphragm spring elasticity is reduced or broken, then the compression force will be reduced, and the clutch will be in a state of wear for a long time, so that the clutch will easily slip.

2. Oil leakage from the gearbox: If there is oil leakage in the gearbox or the oil seal after bending, or there are signs of hardening and ablation on the surface, it will lead to oil stains on the clutch plate, resulting in reduced friction and clutch slippage.

3. Semi-clutch state: if the clutch pedal is pressed halfway, the free stroke of the clutch pedal is too small, and the release bearing is often pressed on the pressure plate, resulting in the clutch being in a state of semi-separation and half-engagement, which compacts the semi-clutch state that we often say, and the compression force of the pressure plate is reduced, which will lead to clutch slippage in the long run.

4. The clutch is not stepped on in place: before the clutch is stepped in place, it will start to slip when the gear is hung or shifted.

The above is an introduction to what is the cause of clutch slippage, if you have encountered such a situation and can't solve it yourself, you need to go to the 4S shop for maintenance and inspection.

There are reasons such as clutch plate damage or loosening, mediation discomfort, etc.

If the clutch disc of the clutch is damaged, loose or deformed, it is easy to loosen the connection between the clutch cover and the flywheel, thereby reducing the pressure of the clutch and causing the clutch of the car to slip.

If there is oil stain on the clutch disc of the automobile clutch, the friction of the clutch will be reduced, and the automobile clutch will slip.

The clutch adjustment of the car is uncomfortable, so that the clutch pedal travel of the car is too small, so that when the owner releases the clutch pedal, the clutch of the car is still in working condition, which causes the clutch of the car to slip.

If there are impurities between the clutch release bearing casing and the conduit of the car, the clutch release bearing cannot be returned normally, and it will also cause the clutch to slip.

1. The free stroke of the clutch is too small, the release bearing is pressed on the inner end of the release lever, and the pressure plate is in a semi-separated state, which slips when transmitting power.

2. Improper operation of the driver. The uphill shift is not timely, and the engine is about to turn off before shifting into the low gear; In order to save fuel and take off the gear and turn off the ignition, when starting the engine again, first hang up the high gear, and then use the method of relaxing the clutch pedal to force the engine to start; The slip grinding of the clutch friction plate is aggravated.

3. The clutch pressure plate spring is broken, which greatly reduces the ability to transmit engine torque, resulting in slippage.

4. The clutch friction plate becomes thinner after wearing, the surface is hardened, and the rivet is exposed or stained with oil is also the reason for the clutch to slip.

5. Improper adjustment of the clutch release lever and loose bolts of the clutch and flywheel will also cause the clutch to slip.

6. The exhaust valve port of the button valve is blocked, and the compressed air in the booster cylinder cannot be completely discharged quickly, resulting in the semi-separation state of the clutch and slipping.

Clutch used correctly:

1. Correct posture of stepping on the clutch. When stepping on the clutch pedal, step on the clutch pedal with the sole of your foot, keep your heel close to the ground, and keep your knees slightly bent when the clutch is at its lowest point;

2. Step on the clutch to the lowest point. Avoid the clutch being in a disengaged state for a long time, and ensure that the clutch is completely disengaged and will not wear out;

3. Control the timing of clutching. When driving, don't loosen the clutch too quickly or deliberately increase the engine speed too high. This accelerates the loss of the clutch;

4. Shift gears only after fully pressing the clutch pedal;

5. When pressing the clutch pedal, the accelerator pedal should be released quickly;

6. Pay attention to the clutch operation to match the hand shift action. When the hand fails to shift smoothly, you should release the clutch first, then step on the clutch once, and then shift gears, do not force the gear shift, otherwise the gears of the transmission will be rubbed, resulting in cup loss;

7. Pay attention to the left foot should not always be placed on the clutch pedal when driving;

8. Note that when driving, no matter what happens, do not press the clutch pedal with your right foot.

(1) The friction plate is damaged.

The friction plates should be replaced with new ones.

2) The free stroke of the pedal is too small.

If the free stroke of the pedal is too small, it may cause the free gap between the release lever and the release bearing to disappear, and the release bearing is close to the end face of the release lever, so that the clutch is often in a semi-engaged state and slips during work. In addition, it will also cause abnormal wear between the pressure plate and the friction plate, so that the free travel of the pedal will be further reduced, forming a vicious circle. If it is found that the pedal stroke is too small, it should be adjusted to the data specified in the instruction manual in time.

3) The end face of the separation lever is not on a flat surface.

The distance between the end face of the three release levers and the end face of the separation bearing is inconsistent, and when the deviation is too large, it will cause the clutch friction plate to be biased and eccentric to wear, and the total contact area between the friction plate and the pressure plate will be reduced, resulting in clutch slippage. In this case, the release lever must be readjusted so that the ends of the three release levers are on the same plane, and their deviation should be controlled within 0 2 mm, and the free clearance between the release lever and the release bearing is in accordance with the regulations.

4) There is oil stain on the working surface, and the friction coefficient decreases and slips.

The oil stain should be cleaned and the cause of the oil stain should be found out and eliminated.

5) The friction plate burns out.

A focal layer is formed on the surface of the friction plate, and the coefficient of friction decreases, causing the clutch to slip. If the burn is severe, the friction disc should be replaced.

6) Friction sheet wear.

Due to the normal wear and tear in long-term use, the friction plate becomes thinner, resulting in the pressure between the friction plate and the pressure plate decreasing and slipping. When it is severely worn, it will also expose the rivets, strain the working surface of the pressure plate, and aggravate the degree of slippage. When the wear is not large, it can be compensated by appropriately adjusting the free gap between the separation lever and the release bearing, and when the wear is severe, the new friction plate should be replaced.

7) Deformation of parts.

When parts such as driven plates, pressure plates and butterfly spring steel plates are deformed, the clutch slips will be caused if the friction plate and the pressure plate cannot be compressed normally or the actual contact area is reduced. When this happens, the deformed parts should be repaired or replaced in time.

8) The pressure spring is too soft or broken.

The pressure spring is too soft or broken so that the friction plate and the pressure plate can not be engaged under the specified pressure, the clutch is often in a semi-engaged state, the work produces slippage, and accelerates the wear of the friction plate, resulting in the aggravation of the slip fault, when this happens, the pressure spring should be replaced in time.

9) Separation bearing burned or stuck.

The clutch loses its ability to disengage and is often in a semi-engaged state, causing the clutch to slip. Release bearings should be repaired or replaced.

When a clutch slip occurs, a correct analysis of the cause of the failure should be performed.

1) The cause of clutch slippage.

Excessive wear of the disc friction pads or exposed rivets;

The clutch pressure plate spring is too soft or broken;

The free stroke of the clutch pedal is too small;

There is oil stain on the friction plate of the driven disc or it is hardened by aging;

The clutch and flywheel engagement bolts are loose;

The clutch master cylinder return hole is blocked.

2) Troubleshooting sequence and parties.

Check the free stroke of the pedal, if it does not meet the standard value, it should be adjusted;

If the free stroke is normal, the clutch bottom cover should be removed, and the clutch cover and flywheel joint bolts should be checked to see if they are loose, and if they are loose, they should be tightened;

Check whether there is oil stain on the edge of the clutch friction plate, if there is oil stain, it should be removed and cleaned and dried with gasoline or alkaline water, and then find out the oil stain ** and remove it;

If it is found that the friction piece is seriously worn, the rivet is exposed, aged and hardened, burned and soaked in oil, etc., the new piece should be replaced, and the new friction plate should not be cracked or damaged, and the depth of the rivet should comply with the regulations;

Check the oil return hole of the clutch master cylinder, if the oil return hole is blocked, it should be dredged;

If the fault is still not eliminated after the above inspection, adjustment and repair, the clutch will be disassembled and the elasticity of the pressure plate spring will be checked. When the pressure plate spring is good, the length should be consistent, if it is uneven, it should be replaced with a new product, if the elasticity is slightly reduced, the length difference is not large, you can add or subtract the gasket under the spring to adjust.

1.Riding the clutch for a long time;

2.When the gear is in gear, grab or take off the gear, such as the car reputation speed has been overscattered and infiltrated through 20km h when the 1st gear is forcibly hooked;

3.The clutch did not step on the ridge to the end, the gear was not in place, and it was not thorough;

4.The vehicle is in a semi-clutch state for a long time.

The free stroke of the clutch pedal is too small, and the release bearing is often pressed on the pressure plate, resulting in the clutch being in a state of semi-separation and half-engagement, and the compression force of the pressure plate is reduced, which will lead to clutch slippage for a long time; The clutch diaphragm spring elasticity is reduced or broken, the compression force is reduced, and the clutch is in a state of wear for a long time, resulting in slippage; Gearbox.

or post-curved oil seals.

Oil leakage, resulting in oil stains and friction on the clutch friction plates.

decrease, and the clutch will slip and fail;

The main reason for clutch slippage is insufficient friction of the clutch friction plates. The free travel of the clutch pedal is too small or disappears; The clearance between the release lever and the release bearing is too small or disappears; The clutch cover is deformed or loosely connected with the flywheel, so that the pressure plate is in a semi-detached state, and the transmission power slips.

Clutch friction plates wear and become thinner; Exposed rivets: hard, ablative or greasy to reduce the coefficient of friction; Improper operation of the drive leads to excessive friction of the compression spring, which produces high heat and reduces elasticity; Individual springs break due to fatigue, which is a decrease in pressure; The clutch rod system is stuck, the clutch pedal cannot be fully returned, and the release bearing and the release rod cannot be separated.

The friction plate is seriously worn, and if you start quickly, it is easy to wear out the clutch, and if the wear is serious, it is easy for the clutch to slip.

Clutch slippage is because the clutch disc pressure plate is old, replace the clutch plate pressure plate with a new one.

The Roewe RX35 only ramps up the speed and does not mention the speed, which makes the driver Mr. Xia frightened! What's wrong with the vehicle? Can the problems that arise in the warranty be repaired outside the warranty?

On Monday, Mr. Xia, the owner of the car, called "Liu Min**", reflecting that the Roewe RX35 he bought in Shangrong, Shandong Province was still at 70km h at a speed of 70km h during high-speed driving, without any signs of speeding up.

Mr. Xia told the program team that the problem first appeared when the vehicle drove to 50,000 kilometers, and he checked it in the store at that time, and the problem was not serious at that time, but the vehicle did not display the fault code, and the 4S store did not check any problems, so Mr. Xia was told to run and see again.

Now that the vehicle has traveled more than 100,000 kilometers, the problem is becoming more and more frequent, and there is still no fault code when he enters the store again, which makes Mr. Xia very distressed, "Can this car still run at high speed?" Such thoughts have always bothered Mr. Xia. Regarding the treatment plan for replacing the clutch plate in the store, Mr. Xia beat a drum in his heart, "Can it solve the problem"?

Because Mr. Xia had been out of insurance, Shangrong asked the owner to deliver more than 9,000 yuan to replace the clutch three-piece set at his own expense, which was unacceptable to Mr. Xia.

With Mr. Xia's question, the program team contacted Shangrong 4S store, and the other party, Manager Li, called back, saying that the situation would be implemented first, and at noon that day, the other party replied, saying that the problem had been implemented. Manager Li informed that earlier, when the complainant was carrying out repairs at other maintenance points, the water pipe clamp was not installed, resulting in antifreeze leaking into the clutch, and then the store assisted the customer to install the clip, tighten the water pipe, and replenish the coolant, and then the problem of not speeding up appeared.

Manager Li said that at present, the store suspects that the antifreeze enters the clutch and causes slippage and excessive wear, but the reason for entering the antifreeze is improper construction and non-quality problems.

In response to the current situation, the reporter also contacted the complainant and fed back the problem to the manufacturer's customer service. At present, the rights protection reporter of the case is still continuing to follow up, and in response to Mr. Xia's question, 1031 riders expressed their opinions:

What do you think about this, welcome to leave a message at the end of the article. If you have a problem with your car, you can call us for a complaint**, 053182954520 or 15105311031 complaint**. Every Monday, Wednesday and Friday, Liu Min**, defend your rights!

The reasons for clutch slippage are: 1. The pedal travel clearance is too small; 2. The clutch pressure plate is broken or the pressure plate is disconnected; 3. Transmission oil seal leakage. The manifestations of car clutch slippage are:

1. When the car starts, relax the clutch pedal, and the starting power is insufficient or difficult to start; 2. When the car is driving, the speed cannot be increased with the increase of the engine speed, and the driving power is insufficient; 3. In severe cases, the clutch emits a scorching odor. The maintenance methods of the clutch are: 1. Keep it clean between the separation jaw and the spiral bevel of the bearing cover and lubricate it with oil; 2. When the friction plate, driving plate and pressure plate in the clutch are stained with oil or rust, they should be dismantled to remove the oil stain and cleaned with gasoline.