How can you tell if the clutch is good or bad?

1.In the use of the clutch, the flywheel, the friction plate, and the pressure plate are the three things that have to be ground every time, of course, the friction plate is mainly worn because of the material relationship. Every time you step on the clutch, or let go of the clutch, this thing is wearing out, but the wear is very small under normal use, not to the point of wear.

2.When the semi-clutch is separated, the friction disc and the flywheel are separated first, and the friction disc and the pressure plate are separated. What's wrong with skidding?

The main manifestation is that the speed rises, but the car does not speed up, or the speed is very slow. It's easy to understand that the crankshaft and flywheel are spinning wildly, but due to slippage, the clutch friction plates don't turn, or don't spin so fast, then the gearbox doesn't get or doesn't get enough power transmission, causing the car to not run.

3.If you look at the booster system with a heavy step, it is possible that the clutch master cylinder and the piston leather bowl of the sub-cylinder are not well returned to the aging position, causing the clutch to slip and the power to decrease.

When stopping for inspection, stabilize the minimum stable speed of the engine, put the transmission in neutral position, press the clutch pedal, observe the short transmission shaft between the front and rear gearboxes, and see whether the short transmission shaft rotates. When the engine is turned off for inspection, step on the clutch pedal and turn the propeller shaft with a crowbar, if you feel a lot of resistance or can't turn the propeller shaft, it indicates that the clutch is not completely disengaged.

The most common clutch damage is the ablation of the clutch plate from a long-term semi-clutch photo, the clutch plate ablation will have a strong asbestos smell, and the gas pedal is like neutral in gear, or the throttle is added very much in high gear, but the car goes very slowly. Others, such as a weak clutch pressure plate spring, a wear of the pressure plate or a flywheel, these failures are rare, and they only occur on very old cars.

How to judge the quality of the clutch plate is mainly judged by the following aspects, the thickness of the clutch plate, the thickness of the clutch plate directly determines the service life of the clutch plate, under normal circumstances, the thickness of the clutch plate is 1Left, if the thickness of the clutch plate is too thin, then the clutch plate will appear premature wear during use, so that the service life of the clutch plate will be greatly shortened, so the thickness of the clutch plate is the main criterion for judging the quality of a car clutch plate. The second is the elasticity of the clutch plate, the elasticity of the clutch plate is also the main criterion for judging the quality of the clutch plate, under normal circumstances, the elasticity of the clutch plate is about 35, if the elasticity of the clutch belt plate is too small, then the clutch can not be well engaged during use, so that it will cause wear and tear of the clutch, thereby affecting the service life of the clutch.

During the use of the clutch on the car, with the gradual wear of the clutch plate, the separation gap of the clutch is getting larger and larger, which is reflected on the pedal that the pedal is getting higher and higher. We can roughly judge the wear and tear of the clutch plate according to the height of the clutch pedal, for example, as long as the clutch pedal of the new car is lifted by one-third, the car will move forward The manual transmission model We can roughly judge the wear of the clutch plate according to the height of the clutch pedal and the clutch junction point, but the driver needs to have rich experience, and is more familiar with the model he is driving, and can keenly feel the change of the clutch junction point.

The clutch pedal gets taller and taller with longer use. The clutch pedal of a new car only needs to be lifted a little bit for the car to start moving forward, but after driving for a while, you will find that the clutch pedal must be raised higher for the car to start moving forward. This is mainly because in the process of using the clutch, when the clutch is seriously worn, we can often feel that the vehicle shakes very seriously when starting, or the phenomenon of shaking will occur when the clutch is stepped on halfway.

This is mainly because the clutch surface has more serious wear and damage, resulting in unevenness, and there will be violent shaking during friction.

The clutch, which is located in the flywheel housing between the engine and the gearbox, the output shaft of the clutch is the input shaft of the gearbox, which is the transmission structure between the engine and the gearbox. In the process of driving the car, the driver can be able to step on the action of the clutch pedal, realize the brief separation of the engine and the gearbox and the complete engagement, the manual transmission model generally adopts the friction clutch structure (the automatic transmission car is not within the scope of discussion in this article), it is composed of four parts: the active part, the driven part, the pressing mechanism and the control mechanism. The friction clutch has simple structure, good heat dissipation, good high-speed performance, long service life and stable torque output.

At this time, according to the speed of the engine, the vehicle generally shakes when starting, which means that the clutch plate has a particularly serious wear condition.

You can judge whether it is good or bad by listening to the sound of the clutch, and the old driver can distinguish it by listening to the sound, and there is no need for others to see it.

The quality can be judged based on the use of the clutch plate, as well as the comfort level and flexibility.

The function of the clutch is to cut off and transmit the power of the engine, usually pay attention to driving habits and operating skills, the clutch is generally not easy to break.

The service life of the clutch plate has a lot to do with driving habits and driving conditions. Even if it is the same driver, driving on the high-speed section, reducing the frequency of use of the clutch, the clutch plate service life is long, such as the main pure urban road section of the car, frequent starting, semi-clutch time, the clutch service life will be much shorter.

1. Use low-speed (1 or 2) gears on slow road sections to reduce the frequency of gear shifting.

2. Properly maintain the distance from the car in front, reduce the frequency of stopping and starting, and correspondingly reduce the use of clutches, which can prolong the service life of clutch plates.

3. Don't put your feet on the clutch pedal when driving normally.

4. Pay attention to the coordination of throttle and clutch, and shorten the time of clutch semi-linkage as much as possible. Don't put your foot on the clutch pedal after starting.

Hello, there are the following main points that determine the performance of the clutch:

1) In any driving conditions, the maximum torque of the engine can be reliably transmitted, and there is a proper torque reserve, and overload can be prevented.

2) The engagement should be complete, smooth and soft, so that there is no shaking and impact at the beginning.

3) Separation should be swift and thorough.

4) The moment of inertia of the driven part should be small, so as to reduce the impact between the transmission gears when shifting, and facilitate the shift and reduce the wear of the synchronizer.

5) There should be sufficient heat absorption capacity and good ventilation effect to ensure that the working temperature is not too high and prolong life.

6) Easy and accurate operation to reduce driver fatigue.

7) It has sufficient strength and good dynamic balance to ensure its reliable work and long service life.

Hope it helps.

When the car is hung in 1st gear, stepping on the brakes or pulling the handbrake, and the clutch is released, the car does not suddenly turn off, which means that the clutch plate needs to be replaced.

As the clutch pedal gets higher and higher, the longer the time, the wear of the clutch plate will gradually become more severe. When the clutch pedals in the car are getting higher and higher, it's time to replace the clutch plates inside.

Clutch maintenance.

1. If you can, don't step on it. Prevent clutch slippage, clutch plate ablation and other phenomena, avoid failure such as annealing of the compression spring of the closure, and also lead to fuel consumption, vehicle cost, and increased driving costs.

2. The separation claw and the spiral bevel of the bearing cover should be kept clean and lubricated with oil.

Expert Wang 2010-03-11 16:12:49 Hello chris:

Regarding the question you asked, there will be certain dangers for the clutch test, and it is recommended that you go to the 4S shop and ask the maintenance personnel to check it. If it is a manual transmission vehicle, the clutch will slip and accelerate sharply, so it is not recommended that you operate it yourself. You don't need to deliberately go to the 4S shop for inspection, the clutch pads are different from the brake pads, you can roughly estimate a replacement mileage, if you use it properly, you can scrap the clutch plates in a day, you can wait until the maintenance time to check.

Clutch damage is divided into two stages:

1. Clutch slippage, clutch due to improper operation or use for too long, there will be clutch plate slippage, at this time the vehicle in the driving engine speed obviously increases, but the speed can not get up, no matter how to step on the accelerator, the speed is only a small increase, this is the clutch plate burned.

2. The vehicle does not go away, the clutch slips to a certain extent, and the joint strength of the pressure plate disappears completely, and the vehicle cannot drive, because the clutch is responsible for the connection between the engine and the gearbox power, and it is completely broken and the power cannot be transmitted.

1. For manual transmission cars, the clutch must be stepped on when starting to prevent the gear from not being in neutral gear when the car starts, which can reduce the load of the starter and reduce the consumption of battery power.

2. When driving normally, do not put your feet on the clutch pedal, when driving, in addition to starting, shifting, low-speed braking and when you need to step on the clutch when you are about to stop, do not step on the pedal at other times, so as not to accelerate the wear of the clutch release bearing, and may also produce semi-linkage phenomenon, which will make the driven disk, pressure plate, and a flywheel friction surface ablation or strain, affect the transmission torque, and even the clutch can not work normally.

3. It is strictly forbidden to lift the clutch violently, if the clutch is lifted too fast, it will produce a great impact load on the transmission system in an instant, and it will damage or shorten the service life of the clutch and transmission parts.

If the clutch plate of the car is broken, the car will not be able to go. The engine is revving, but the power cannot be transmitted to the gearbox through the clutch, and the car cannot drive. Therefore, the clutch is a very important component, and it is necessary to cherish the operation, first, when starting and shifting, try to be crisp and neat.

2. Do not semi-linkage for a long time when stepping on the clutch (the car is in a working condition where you can't go), and avoid hitting the accelerator. If the driver has good driving habits, the clutch is no problem with more than 100,000 kilometers, otherwise it needs to be repaired and replaced after 10,000 kilometers.

If it only smells of burning, and the car can still start smoothly, it will be fine for the time being; Novices practice slope starting, generally more prone to high-speed starting, at this time the clutch is semi-linked, clutch plate friction at high speed, of course, there will be a burnt smell, at most the clutch plate wear exceeds the normal range, but not immediately broken. It can be understood in this way: if the original design is a clutch plate that runs 50,000 kilometers to life normally, after being started by a large number of novices practicing slope, the life will be quickly reduced to 40,000 kilometers, hehe, don't be afraid, you will soon master the skills through a lot of practice, and you will survive the high wear period, and the clutch plate can be used for a long time.

Tips, tricks and so on, any master can say a lot; In fact, it is one in the bones: a lot of practice, find the best bite height of the clutch, and be proficient, so you can naturally lift your feet and go.

The clutch is generally not so bad, is it that you didn't let go of the handbrake while driving?? Only by dragging the handbrake will it be easy to burn the car full of scorching smell.

During the use of the clutch, the main faults that often occur are heavy clutch pedal, slippage, incomplete separation (can not be cut), trembling, wandering, abnormal noise, etc.

After the clutch has problems, there will be various phenomena, such as rapid acceleration weakness, climbing weakness, emphasis on weakness, that is, various physical and so on. Most of the causes of failure are caused by the thought of the cause, and there is also improper use, lack of attention to maintenance, etc.

An active aspect of the maintenance method, the driver develops good driving habits, do not often half-angle clutch, and do not rely on the clutch to achieve the purpose of acceleration. The passive aspect is a thorough overhaul and regular maintenance.

1.When the engine is idling, the clutch.

The pedal is pressed almost all the way down to cut off the clutch; Or when you press the clutch pedal, it feels difficult to engage or the transmission.

There was a screeching crash in gear; Or the vehicle starts driving without lifting the clutch pedal after shifting gears, indicating that the vehicle's clutch disengagement is incomplete.

2.The clutch slips, because the free stroke of the clutch pedal is too small, and the release bearing is often pressed on the membrane Biden spring, so that the pressure plate is always in a semi-separated state; The clutch pressure plate spring is too soft or broken; The screws connected to the clutch flywheel are loosened and delayed.

3.If there is an abnormal noise during the use of the clutch, it is also abnormal. The cause of the failure is: the separation bearing is seriously worn, the bearing return spring is too soft or broken, and the diaphragm spring bracket is faulty.

4.When the clutch pedal is pressed 3 4, the clutch should be firmly engaged. Otherwise, check the stroke.

Whether it is appropriate or not. You can use a ruler to measure at the pedal. Measure the height of the highest position of the pedal first, and then measure the height when you feel resistance when you press the pedal. The difference between the two values is the hand key value of the car's clutch stroke.