Main clutch faults (Peugeot 406)

There is no resistance when pressing the clutch pedal

• the cable adjustment mechanism is faulty (cable operated clutch);
• the hydraulic clutch release system is faulty (hydraulic clutch);
• bearing or clutch release fork is broken;
• the diaphragm spring in the clutch pressure plate is broken.

The clutch is constantly engaged

• the clutch adjustment mechanism is faulty (cable operated clutch);
• the hydraulic clutch drive system is faulty;
• the clutch disc is jammed on the splines of the gearbox input shaft;
• constant contact of the clutch disc with the flywheel or pressure plate;
• incorrect assembly of the pressure plate;
• the clutch release mechanism is worn out.

Clutch slippage

• the cable adjustment mechanism is faulty (cable operated clutch);
• the hydraulic clutch drive system is faulty;
• excessive wear of clutch disc linings;
• clutch disc linings are contaminated with oil or lubricant;
• the pressure plate is faulty or the diaphragm spring is weak.

Intense vibration when engaging the clutch

• clutch disc linings are contaminated with oil or lubricant;
• excessive wear of clutch disc linings;
• the pressure plate or diaphragm spring is deformed;
• wear of engine or gearbox mounts;
• wear of the splines of the gearbox input shaft or clutch disc hub.

Noise when pressing or releasing the clutch pedal

• the release bearing is worn out;
• clutch pedal bushings are worn out;
• the pressure plate is not assembled correctly;
• the diaphragm spring of the pressure plate is broken;
• the clutch disc damper spring is broken.