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Hydraulic Clutches

Installing the right clutch won’t make a difference if the vehicle has a problem with the clutch linkage. Most vehicles today have a hydraulic clutch release system with a master and slave cylinder. The problem occurs when clutch failure is diagnosed improperly as the “clutch” failed and not as hydraulic failure. You cannot tell for the most part, unless it is leaking, that the hydraulic system is not working properly. To do it right, you should replace the hydraulics when you replace the clutch. At the least, the hydraulic system should be “bled,” similar to a brake system, in order to eliminate any air in the system.

At HR Clutch, we cannot stress enough that it’s important to install new hydraulics when you replace the clutch. Many people also fail to use a flywheel shim when the flywheel is resurfaced. Due to the lack of adjustment on a hydraulic clutch, a flywheel shim can mean the difference between a clutch releasing properly or not. Since 1960, we have been trying to prevent clutch failure by informing our customers on these and other commonly overlooked technical issues. Being in this business this long, we have the knowledge and experience to allow our customers to do the job right. HR Clutch serves drivers across the US and offers a wide range of hydraulic clutches and hydraulic slave and master cylinder components to choose from. Continue reading to learn more about hydraulic clutch systems, hydraulic clutch performance, and flywheel shims.

Hydraulic Clutch System
A master cylinder and a slave cylinder make up the hydraulic clutch system. As the clutch pedal is pushed down, the master cylinder transfers hydraulic fluid to the slave cylinder. In turn, the slave cylinder is able to press down on the clutch release bearing, disengaging the clutch.

Hydraulic clutches add torque and power to your vehicle. Not only that, but they also add maximum pressure, high rotational speeds, and a smoother engagement. Another benefit is minimum pedal effort. These clutches may be used to offer optimal performance in power transmission vehicles, off-road machinery, heavy equipment, and more.

Flywheel Shim
As part of the clutch system, the flywheel is highly important but is often times overlooked for the reason of clutch failure. When the flywheel is resurfaced, it in essence brings the flywheel, along with the pressure plate, further away from the release bearing. After resurfacing a flywheel several different times, a no-release problem can occur as a result of the hydraulic clutch having no adjustment to make up for this wear on the flywheel. A flywheel shim installed behind the flywheel compensates for this wear and brings back the original thickness of the flywheel.

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