Clutch Pressure Plate for trucks

Clutch pressure plate ensures torque transmission from the engine to the primary shaft of the gearbox. The device is responsible for connecting and disconnecting the flywheel and the driven element, engaging and disengaging the clutch.

Types

The design envisages presence of a return spring, which with the system running can move:

• To the flywheel. Devices are thick.
• From the flywheel. These are thin devices that are often used in small trucks because they do not take up much space under the hood.

By the type of springs and their method of attachment:

• With several cylindrical parts. They are attached to the casing due to stamped ledges, and to the pressure plate - due to cast elements.
• With a single central diaphragm spring. The device is attached inside the casing by bolts and retaining rings.

Products may vary in size, particularly, in diameter. Since the components are subjected to extreme loads due to high temperature, centrifugal forces, vibration and friction, manufacturers calculate their parameters with regard to the maximum torque. Components for trucks are always larger than pressure plates for passenger cars.

Malfunctions and reasons thereto

The service life of these components on the average is 300,000 km of mileage, but it may shorten depending on the operating conditions of the truck and the driving style. Frequent faults include deformation of diaphragm spring fingers, loosened attachment, as well as warping, distortion and oiling of the component. Its accelerated wear usually is the result of improper gear shifting, starting at high rpm, etc.

How to detect faults

Breakage is indicated by the following signs: extraneous sound when the pedal is pressed, the vehicle jerks when starting, gear shift becomes difficult. These signs may also indicate problems with other elements of the unit, so when they occur, perform comprehensive diagnostics, including dismantling and disassembly. When serious damage is detected, we recommend replacing the unit assembly.

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