Remember that during normal operation, the engine is always spinning. In other words, we want to disconnect, reconnect, or gradually reconnect a spinning engine to the transmission, depending on our driving needs. Imagine if the engine were to be always connected to the transmission via a set of gears. What would have happened when you started the engine? That would certainly have damaged the starter after a few such starts.
Also, when you wished to change gears, say from the first to second, or from first to reverse, without a clutch to separate the engine from the transmission, you would have heard a grinding noise each time you tried to shift the transmission from one gear to the other!
That would have damaged the gears very soon! So now we know why there is a need to disconnect the engine from the transmission, to be able to drive a car.
The mechanism that does that simple yet critical task, is called the clutch. The clutch assembly is sandwiched between the engine and the transmission or the gearbox , as illustrated below:. You cannot get a view of the clutch assembly by looking down the engine compartment or by merely raising the vehicle up on a hydraulic lift.
One way to save money then is to find out whether you need a clutch replacement without opening up the clutch assembly. Hydraulically assisted clutches utilize hydraulic assistance from the engine, and thereby reduce the effort required to operate the clutch pedal. A cable clutch is pulled in and out by a cable from the clutch pedal to the lever which operates it.
A hydraulic clutch has a cylinder near the clutch pedal like the brakes have one near the brake pedal , which pushes fluid in to another cylinder, which in turn pushes the lever to move the clutch in and out. The cylinder near the clutch pedal is called the Master Cylinder and the one near the clutch lever is called the Slave Cylinder.
The Master and Slave Cylinders, together with the hydraulic piping are the additional components in a hydraulic clutch, over and above the components already present in the cable clutch.
Of course, the cable itself is not used in the hydraulic clutch. So what are the components present in a regular or cable operated clutch? The clutch assembly consists of the following components. If you find it difficult to comprehend as you read the component descriptions, we recommend you jump to the subsequent section How does the clutch assembly work?
How something works is best explained by a video rather than text. The following video is highly recommended if you want to understand how the clutch works in reasonable detail:.
So how can you determine if your clutch assembly needs replacement? Sometimes we can decide the problem by the lubricating, but some cases need to cable replacing. To determine the damaged part of cable, you need examine the clutch cable looking for signs of frayed strands. So you can see the problem, when the clutch pedal flops uselessly to the floor.
It can be sign the cable broken, therefore clutch becoming increasingly very stiff to operate. Deciding of this malfunction is to replace a new cable.
It is not expensive detail, but the service can be cost some money. Firstly you need inspect the clutch cable. It will be better if you start the inspection from the connecting place to the clutch pedal. One would think this would be an obvious issue that would be noticed immediately, but it occurs more often than you would know. People often drive around with small objects rolling around in the vehicle, unaware of the dangers.
If any of these objects were to get caught below the pedals, it could cause trouble pushing the clutch. This is another simple fix that should be checked before you go ripping parts out. You want to keep the area free of debris and items because if anything were to get below your brake pedal, it could have a much more disastrous effect.
When you push the pedal down, the cable pulls the linkage to disengage the clutch. Because the clutch is disengaged, you can change gears safely. However, when this clutch cable becomes worn or stretched out, you will have to use more force to get it to work. Clutch linkage is made from mechanical and hydraulic components that allow the clutch to operate. The linkage also contains various rods and arms.
The linkage is responsible for multiplying the force from the pedal. It provides the necessary strength to the pressure plate. Without the linkage, you would need a lot more pressure on the pedal to disengage the clutch. The clutch slave cylinder works in conjunction with the clutch master cylinder to disengage the clutch when you push the pedal. Pressure is received from the master cylinder that extends to the clutch slave cylinder, which then extends a rod to push into the lever or fork and disengage the clutch.
When either of these becomes defective, you might notice trouble shifting gears. However, the first sign of failure is typically a stiff pedal. The clutch hose is a flexible component found in hydraulic systems. This hose transports the pressure and fluid when the pedal is pressed. See our User Agreement and Privacy Policy. See our Privacy Policy and User Agreement for details. The clutch pedal is responsible for the proper shifting of gears in sync with the speed of your car.
Because of frequent use, the clutch pedal will begin to lose its effectiveness and feels hard to press. The common causes are related to the drive shaft, pivot ball, and the clutch cable. The SlideShare family just got bigger. Home Explore Login Signup.
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