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Part of the worldwide Schaeffler Group, LuK is the leading manufacturer of clutch technology and supplies almost every tractor manufacturer with dry running clutches or torsion dampers for connecting the engine with the transmission. Tractor clutches do not only have to ensure operability. They often have to run secondary machines via PTO drive too. All leading tractor manufacturers rely on the durability, cost efficiency and the outstanding damping qualities of LuK tractor clutch systems. You can rely on products with prolonged operating life, it’s not without reason that LuK is the global leader in clutches sold per year.
A clutch is basically a friction material, similar to a brake pad, that transfers the power between the tractor engine and the transmission which ultimately drives the wheels. A simple clutch setup includes: A flywheel (2) that is attached to the engines crankshaft (3), a clutch disc (4) that bolts up to the flywheel, a pressure plate (5) that holds the clutch disc in place and a clutch cover (1).
How a clutch system works: When the engine is running the clutch spins freely and every time the clutch pedal (6) is pressed or released the pressure plate moves back and forth to engage the disc to the flywheel. Friction will eventually will stop the disc from turning and the pressure plate will transfer the power from the flywheel to the splined input shaft (7) through the transmission and thus providing power to the transmission and ultimately to the drive wheels.
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Clutch judder is experienced by the tractor driver when the clutch is engaged and a vibration may be experienced through the peddle. When this occurs it will be difficult for the driver to achieve a smooth pull-away and deliver accurate tractor control.
Possible causes of clutch judder are:
One function of the clutch is to transmit the drive from the engine through the clutch into the transmission box without any loss of power. When the speed of the engine differs to the speed of the transmission then you may experieince clutch slip. This is evident by the engine revs increasing but the wheel or PTO speed failing to increase accordingly.
Possible causes of clutch slip are:
One function of the clutch is to interrupt the drive from the engine to the transmission, which allows the operator to select and engage each gear smoothly. If clutch drag occurs the operator will experience difficulty in selecting or changing gear without grating.
Possible causes of clutch drag are:
Clutch noise may be as a result of parts failure or system wear. Noise during clutch disengagement is normally related to the release system. However, noise during engagement and drive is usually related to disc cushioning or damping.
Possible causes of clutch noise are: