
Crashes clutch
Clutch Failures
Reading this article may help you a lot before you go to the workshop and have the mechanic dismantle and disassemble your car clutch, in most cases the mechanic will put the car on the lever and start dissolving the clutch without even asking about the following:
What led to the damage or malfunction of this clutch?
Is the damage a result of natural erosion, or is there another reason that led to this damage?
This questioning process is one of the most important steps in the car repair process. You can refer to the distance traveled meter to answer this question. From 1950 to 1970, a distance of 50,000 to 60,000 miles (80,000 to 96,000 km) was considered an adequate clutch life, but as a result of advances in clutch technology, it lives up to 80,000 miles (128,000 km). This service life depends on the driver, vehicle usage, and vehicle maintenance.
If the clutch malfunctions before the car has traveled 35,000 miles (56,000 km), for example, it makes you suspect that the clutch malfunctions are caused by something other than normal wear, and you should research to find out the cause. In the event that you are not guided by the cause of the malfunction and you are satisfied with changing the damaged part, this means that you will deal with this malfunction again, and this is of course certain, because you treat the results and not the causes.
Some of the causes of clutch failure are not caused by clutch parts damage, which means that changing clutch parts will not solve the clutch damage problem. It could be a problem that neither you nor the mechanic can solve. In some cases, solving the problem means changing the way you drive the car, and in other cases, the solution is to buy a larger car to tow or carry the extra load that the car suffers from.
You must determine the cause of the failure. Acting quickly by changing parts of your car may eliminate clues that show the actual cause of the failure. Take some time to familiarize yourself with the clutch and its components, and do some clutch diagnostics that may give you the ability to know the cause of a failure.
Before going to the workshop and if your car is still in good condition to drive, take the car for a test drive. In the meantime, try to identify the symptoms of the problem. Knowing the symptoms will make you focus on the cause of the malfunction and will save you a lot of time and money.
Symptoms or problems experienced by the clutch system can be summarized in the following:
There is no separation process – inability to transfer.
Sliding clutch
Clutch vibrates and vibrates
· Noise
Vehicle not running
Most of these frequently occurring problems or symptoms can be divided into their causes:
Corrosion or damage due to natural causes (life span)
Driving error
Installation error, when replacing
Lack or lack of maintenance
Manufacture defect, or non-original parts
With a closer look at what might be the cause of the malfunction, here is the general rule that relates to the odometer. Of course, there are exceptions to every rule, but this is the axiom. A manufacturing defect or installation error occurs immediately or shortly after the process of installing a new clutch or parts. Problems due to poor maintenance or steering error occur in the middle of the clutch life, from 20,000 to 35,000 miles (32,000 to 56,000 km). Problems caused by natural erosion are more than 50,000 miles (80,000 km).
Ask yourself these questions that may shed some light on the cause of the malfunction:
Is this the original car clutch or is it a clutch that was put in the car instead of the original?
If it has been changed before, who did it? There is a possibility that the clutch has been installed incorrectly.
Has the clutch adjustment been done before? Some cable or hydraulic clutches are self-adjusting, but some require adjustment. In the event that the car needs tuning, are you aware of that?
Is the vehicle used to tow a trailer or overload? In this case, you may need to replace the clutch with a special heavy-duty clutch.
Also, which is an important issue, who is driving the car? The way young people drive the car is a bit harsh on the car. Is there someone who presses the clutch pedal and keeps pressing it during the stop at the traffic lights?
Some of these questions seem simple, but if they are neglected and the answer to them is the cause of the clutch malfunction, this means that you will repair the car many times and the cause of the malfunction will remain (treating the causes is better and better than treating the results). It is better to identify the causes early, in order to save you the repair process later.
The next step is to check the car itself. Was the car in a traffic accident? If this happens, the chassis may be warped, and this may cause the engine to misalign the gearbox, causing the clutch disconnection problem. A break in the transmission bearing base or engine may also cause the power train to misalign. If any of these conditions exist, they must be repaired before the clutch is replaced, in the event that the clutch is replaced without addressing these conditions means that you will still suffer from clutch failure even after it is replaced.
Check under the car for oil leaks from the powertrain, especially under the gearbox holster. If oil is present, this could be because the engine rear oil grille or the gearbox front oil grille needs replacing. If the clutch disc is exposed to oil, it will cause the disc to slip and burn the friction surface.
Next, check the clutch disconnection system. In the event that the vehicle is operated by mechanical cable disconnection, check the free distance of the clutch fork. It is possible that the malfunction is the result of improper tuning. In the event that the free space adjustment is insufficient, the diaphragm spring edges or the separation levers will rise until they come into contact with a pomegranate and this will relieve the pressure on the clutch disc (similar to the case of placing the foot on the brake pedal) and accordingly the friction disc slips and the lining burns out.
In the event that the problem is that the clutch is not disconnected, and the disconnection works by means of a cable, and this is the end of the adjustment, then the solution is to replace the cable. The clutch cable is stretched and needs to be inspected with each clutch replacement.
If the clutch is operated by the hydraulic system, check the master cylinder or sub cylinder to make sure there is no oil leakage. In the event that one or both of them leak, they must be replaced. In the event that the clutch is not able to disconnect and there is an oil leak, this change may solve the clutch problem.
In the event that there is a noise coming from the clutch, there is a simple test that shows the source of the noise. There are two possible sources of clutch noise, release bearing, and flywheel axle (pilot bearing). To determine which of them is the source of the noise, the following steps can be followed:
Step 1: While the engine and transmission are running in the neutral position, in the event of noise, it is from the transmission, and most likely the cause is the front wear shaft of the gearbox that holds the input shaft.
Step 2: In the event that this is not the source of the sound, place your foot on the clutch pedal and begin applying pressure to the pedal. If the noise starts to be heard at this point, the problem is that the clutch has disconnected. If the sound does not appear, complete the next step.
Step 3: Push the pedal to the floor of the vehicle. If a noise is heard at this point, the pomegranate wears the guide or bushing located in the center of the flywheel. If the noise does not appear, the problem is not with the clutch. Identifying these conditions from the beginning before lifting and replacing the clutch will ensure that the noise does not appear after repair.
When lifting the clutch parts from the car, look for signs of wear in the parts that you normally would not change, such as the clutch disconnect fork, if there is wear change it.
One of the most important things when installing a clutch is to install a full compatible set of parts. When purchasing a clutch assembly, make sure of the warranty given on the clutch and its parts, and this warranty ranges from 12 months to 24 months.
One of the things that is not taken into account when changing the clutch as unimportant is cleaning and priming the flywheel surface, which is one of the important things.
Some of the simple steps you take before dissolving the clutch may save you time, effort, and profit in the long run, in addition to addressing the cause of the failure and preventing its recurrence.
The clutch pedal pushes down easily and the shifting is difficult:
this problem may or may not occur suddenly.
Possible cause:
No contact between the pedal and the bearing Separation:
(Clutch with mechanical joints)
* There is a cut in the clutch cable, replace the cable
* The clutch cable is disconnected, reconnect the cable
* Not adjusting the length of the cable, adjust the length
(the hydraulic coupling clutch)
* There is no hydraulic fluid in the hydraulic circuit of the clutch, find the cause of the leak, fix the fault, fill the clutch master cylinder with the appropriate fluid.
*There is a leak in the clutch hydraulic circuit, find the cause of the leak, fix the malfunction, increase the fluid
*There is air in the clutch hydraulic circuit, bleed the air
* Internal leak in the clutch master or sub cylinder, change the repair kit (interlacing), check the cylinder as well.
The clutch pedal does not move and the gearbox cannot be shifted:
This problem occurs suddenly.
Possible Cause: An
obstruction obstructing the separation process:
* A bend in the clutch cable, find and straighten the bend or replace the cable
* The clutch coupling is bent, find and straighten the bend
* The clutch disc hub does not move on the shafts, loosen and clean
Clutch slip:
When the clutch is engaged and the clutch is loosened, the engine speed increases but the car does not move. This problem increases with time.
Possible cause:
Lack of full
coupling : * Clutch needs adjustment (no paddle free clearance), adjust clutch
* Clutch coupling is bent, fix bend
Double acting force:
*
Diaphragm spring weak, replace spring Low friction coefficient of friction disc:
* Disc The clutch friction is worn, the clutch is not
* The clutch friction disk is contaminated with oil, fix the leak, then change the clutch
The presence of vibration when the clutch separating the
likely cause: the
problem of disc friction clutch
* The presence of oil on the clutch disc, replace the disk
* warp clutch disc, replace the disk
problem , install the engine
* damage to the engine rules, or rules Fasten
Noise heard when the pedal is depressed
– pressure is a slight pressure:
Possible cause:
Pomegranate sound
* Pomegranate wear is damaged Disconnect the clutch, replace the Pomegranate
– Pressing the end of the trip the paddle
: Possible cause:
Pomegranate wear sound
* Pomegranate wear damaged shaft guide Input the gearbox to the flywheel, replace the pomegranate wear the flywheel
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