Clutch (Td4 Engines): Description and operation

Td4 Engines

2

16 1

17 15

18 14

13

6

12

• 11
• 7
• 8
• 10

9

M33 0405

1 Quick fit connector 2 Master cylinder assembly 3 Clutch pedal 4 Piston 5 Hydraulic pipe 6 Piston 7 Release bearing 8 Gearbox input shaft 9 Pressure plate

4

3

5

10 Friction material 11 Clutch driven plate 12 Crankshaft 13 Roller bearing 14 Arc spring 15 Primary mass 16 Secondary mass 17 Clutch cover 18 Diaphragm spring

Hydraulic Operation When the clutch pedal is depressed, the piston is pushed into the master cylinder. The piston pressurizes the fluid in the master cylinder forcing the pressurized fluid along the hydraulic pipe. The pressure is felt at the piston of the slave cylinder which moves under the hydraulic force applied.

K1.8 Engines: When the clutch pedal is released, force from the compressed fingers of the diaphragm spring pushes against the release fork through the release bearing. The release fork rotates which in turn rotates the release lever and pushes the piston back into the slave cylinder. This returns hydraulic fluid back up the hydraulic tube and into the master cylinder.