Lubricants, sealants and adhesives
| Elements | Specification |
| Brake Fluid Super DOT 4 | ESD-M6C57-A |
| High temperature grease | ESDM-1C220-A |
Clutch controls
| Drive unit | Hydraulic |
| Adjustment | Automatic |
| Pedal travel | 133±3mm |
Tightening torques
| Name | Nm | lb-ft | lb-in |
| Clutch Master Cylinder Bolts | 9 | - | 80 |
| clutch slave cylinder | 10 | - | 89 |
Elements - Clutch Controls
| Pos. | Spare Part No | Name |
| 1 | Brake fluid level switch | |
| 2 | Brake fluid reservoir | |
| 3 | Supply pipeline | |
| 4 | Clutch Master Cylinder | |
| 5 | High pressure pipeline | |
| 6 | Clutch slave cylinder with integrated clutch release bearing | |
| 7 | Air removal nipple |
The Focus has a hydraulic clutch. The hydraulic clutch system uses brake fluid from a separate chamber in the brake fluid reservoir.
Pressing the clutch pedal increases the pressure in the clutch master cylinder. This pressure reaches the slave cylinder, which then acts on the clutch release bearing.
The advantages of hydraulic clutch actuation are as follows:
- Automatic adjustment
- Low operating force
- Minimum wear
The following elements of the hydraulic clutch are different from those previously used in Puma:
- Modified clutch slave cylinder; it is not possible to individually replace the clutch release bearing.
- Clutch pedal travel is not adjustable.
- Removed preload valve; preload is generated by the spring.
- New clutch slave cylinder
Fluid reservoir
The brake fluid reservoir contains brake fluid for the hydraulic clutch and for the brake system.
Inside the tank is divided into two chambers - respectively for the hydraulic clutch and for the brake system. If there are leaks in the hydraulic clutch, the brake system is working properly.
Clutch Master Cylinder
The pressure required to engage the clutch is generated by the clutch master cylinder.
When the clutch pedal is depressed, the piston rod moves the clutch master cylinder piston. The hydraulic fluid in the clutch master cylinder is pressurized and fed through a high pressure line to the clutch slave cylinder.
Clutch slave cylinder
The central slave cylinder of the clutch is equipped with an integrated clutch release bearing and is attached to the clutch housing with three bolts. The clutch release bearing is installed in the clutch slave cylinder by an interference fit. It is not possible to replace it individually.
The hydraulic fluid squeezed out by the master cylinder piston moves the slave cylinder piston and this, in turn, leads to axial movement of the release bearing. The release bearing abuts the inner race of the bearing against the lugs of the diaphragm spring. The clutch created by the spring between the clutch disc and the flywheel is broken.
When the clutch pedal is released, the diaphragm spring directs the piston in the slave cylinder back to its original position. Under the influence of the spring, the clutch between the clutch disc and the flywheel is restored again.
Visitor comments