Where is it located?

The clutch mechanism is located between the vehicle's gearbox and engine. It is attached to the flywheel.

The clutch mechanism is usually sold as a kit with the clutch disc and the clutch release bearing.

What is a clutch mechanism?

The clutch mechanism consists of an armature (1), a pressure plate (2) that pushes the clutch disc onto the flywheel and a diaphragm (3). The diaphragm is cut along the entire inner periphery by a number of radial slots. These form baldes, each of which forms the clutch spring and acts as a lever.

Function

Key:

1: flywheel

2: clutch disc

3: clutch mechanism

3.1: mechanism body

3.2: pressure plate

3.3: diaphragm

4: clutch release bearing

5: gearbox input shaft

Clutched system:

At rest, the diaphragm pushes the pressure plate against the clutch disc. As the disc slides axially on the gearbox input shaft, it is pressed by the pressure plate against the friction surface of the flywheel. This brings the flywheel into contact with the transmission input shaft via the disc. Since the flywheel and the clutch mechanism are connected, the disc is driven by both the flywheel and the pressure plate.

Disengaged system:

When the driver actuates the clutch pedal, the release bearing is pressed against the diaphragm via the clutch fork and a mechanical or hydraulic linkage (see "Clutch: control"). The diaphragm, by deforming, releases the stress exerted by the pressure plate on the clutch disc. Once released, the disc no longer transmits the rotational movement of the engine to the primary shaft of the gearbox.

Slip system:

When starting, the driver must accelerate the engine to a speed where the torque allows the vehicle to move.

At the same time, the clutch pedal is gently released. The disc is then squeezed between the flywheel and the pressure plate. Part of the torque is transmitted to the gearbox and the vehicle starts to move.

During the entire "slip" phase, part of the engine's mechanical energy is converted into heat energy. Slippage" should be as short as possible to avoid overheating and destroying the clutch disc.

Parts

Euro4x4parts sells clutches for a wide range of 4x4 vehicles:

We usually offer two choices of clutch kits:

  • AFTERMARKET: a quality generic part offering the same functions and features as an original part, but not coming from an original supplier.
  • OEM (Original Equipment Manufacturer): a replacement part manufactured by an equipment supplier that provides one or more manufacturers with original equipment.

Note:  when changing the clutch kit on your vehicle, you should also consider changing the pilot bearing.

Examples for a Nissan Patrol Y61 2.8 TD6:

Find the clutch kit to suit your vehicle:

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