Hard pedal is a common complaint in vehicles equipped with manual transmissions and can be caused by many factors. Hard pedal can also be described as a stiff clutch pedal. This condition can be an inconvenience to the driver. Inconsistent pedal feel and difficult engagement of the clutch are symptoms of a hard pedal often resulting in driver fatigue. Most newer, and some older, vehicles use hydraulic clutch release systems that may include a master cylinder, slave cylinder and hydraulic line. Hydraulic release systems also incorporate mechanical components to engage and disengage the clutch. Some vehicles may be equipped with a concentric slave cylinder. A concentric slave cylinder is a release bearing and slave cylinder combined into one unit.
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