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The used clutch disc and pressure plate for vintage Leyland trucks are a suitable option for replacing worn components due to their simple design and durable materials. These discs are typically made of hardened steel with diameters ranging from 400 to 420 millimeters, and the clutch plates feature friction linings resistant to heat up to 320°C. The diaphragm springs can withstand torque between 600 and 900 Nm, with an allowable wear gap between disc and plate of less than 2 millimeters. Using tested, quality used components maintains torque transfer accuracy and reduces slippage in medium-duty cycles, restoring approximately 60–70% of the clutch system’s service life compared to new units.
From a performance perspective, used Leyland clutch plates must be installed on the flywheel with proper lubrication and precise alignment to prevent excessive heat and uneven wear. Foreign particles or oil on the friction surface reduce the coefficient of friction and lower clutch efficiency. Depending on age and condition, used components are typically priced between \180 and \300, and with proper inspection for wear and cracks, the cost per 1,000 operating hours is more economical than new aftermarket alternatives.
From an engineering standpoint, Leyland clutch disc and plate design features precise tolerances between disc and plate, uniform diaphragm spring stiffness, and adequate thermal resistance. Extended use without filter replacement or temperature monitoring can lead to corrosion and reduced system efficiency. These parts are designed for medium-duty cycles and loads below 80% of rated capacity but can still perform reliably under heavy-duty conditions with proper temperature and pressure control.
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