What are the Reasons of clutch not working?

Presently most of the vehicles on the road are automatic but still few manual transmission are still cursing the streets.  When it comes to manual transmission, clutch is an important component. Well maintained and cared clutch generally lasts 130,000 km, but abused one even fails to last 60,000 km.

 The Clutch is a essential for safe operation of the vehicle and a malfunctioning clutch can damage other transmission parts quickly. This greatly increases the cost of the repairs. It is very essential that clutch problems are addressed as soon as they are first noticed.


Why clutch Fails

There are many reasons why clutch fails. The following are the major reasons of clutch failure.

Malfunctioning Clutch Master/Slave Cylinder: A Clutch master cylinder has a reservoir that holds brake fluid. This cylinder is connected to slave cylinder via hoses.  As the clutch pedal is depressed, fluid from the master cylinder moves to slave, this applies pressure to engage clutch. With passage of time seals in both cylinders wear out and cause fluid to leak. This leak leads to malfunction of clutch and shifting gears become impossible.

Clutch Fluid Leak: Any leak of clutch fluid which is break oil makes it hard to change gears and clutch pedal may go all the way to the floor. A fluid leak is often a symptom of a very serious problem.

Slipping Clutch: Clutch are designed to slip a bit when the first clutch is engaged or during gear change to make car ride smooth. But when the clutch is fully engaged then there is no room for slippage. Generally this slippage happens when the vehicle is hauling a load or going up a hill. Clutch gets hot due to slippage, which results burning of clutch facings, which can damage flywheel and pressure plate. Normal wear and tear causes slippage in clutch. As soon as this slippage happens it should be addressed on priority.

Jerky Clutch: The Jerky clutch is caused by oil and grease that has gotten on the clutch lining. Loose clutch cover and wrapped flywheel can also cause this problem.

Air in Hydraulic Line: A clutch can stick if there is a air in the hydraulic line as air takes space and fluid pressures cannot be built due to this.

Misadjusted linkage:  The linkage which connects the clutch pedal with clutch system can become misadjusted with use. Sticking clutch is sign of this type of clutch problem. To correct this, linkage must be adjusted properly.

Broken Clutch Cable: If the clutch cable which connects clutch paddle with clutch box can get stretched or broken. This problem can be solved by replacing clutch wire.

Clutch not releasing: Lot of reasons are there that can cause a clutch to not release. Everything right from the damaged input shaft to a worn out bearing retainer or a bent clutch disk can cause clutch not releasing. In vehicle that has a clutch not releasing problem, a thorough inspection should done and damaged parts be replaced as soon as possible. Repairing the parts will lead to more serious conditions in future.

Hard Clutch: Cause of heard clutch is due to pedal linkage or clutch cable getting worn out and dust accumulated in the cable making clutch wire getting struck. Replacement of clutch cable can remove this problem.