Since the hydraulic clutch operates on brake fluid, before carrying out work, you should read the section "Removal of air from the brake system".
Attention: With this method of venting, some air may remain in the system. This is recognized by the rattle and incomplete release of the clutch. Therefore, it is required to carry out the removal of air at the service station.
Raise the front of the car.
Check brake fluid level in expansion tank -1- and top up if necessary up to the MAX mark.
Remove cap from bleeder valve -3- on clutch slave cylinder.
Attach the transparent hose to the bleeder valve of the slave cylinder.
Carefully ensure that the bleed valves turn easily. To unscrew, use a ring wrench so as not to damage the hexagon of the head.
Lower the free end of the hose into a vessel with brake fluid so that no air is drawn in during the bleeding process.
Press the clutch pedal -2- up to the stop about 10 times and keep it depressed.
In this position, open the bleeder valve -3-, brake fluid flows out. Close the bleeder valve when the brake fluid comes out free of air bubbles.
Attention: The level of the brake fluid in the reservoir must not fall; if necessary, add fresh brake fluid to the reservoir.
Release the clutch pedal and press it again about 10 times, leaving it in the pressed position. Repeat this process until all air bubbles are gone from the hose. At the same time, constantly add fresh brake fluid to the reservoir.
Close the bleed valve on the clutch slave cylinder. Remove the hose and put on the protective cap.
Lower the car.
Add brake fluid to the expansion tank up to the MAX mark.
Check the function of the clutch and brake system.
Air removal with a special installation
At service stations, bleeding from the hydraulic clutch actuator is usually carried out using a special installation. The unit applies pressure to the brake fluid.
Unscrew the cap of the expansion tank with brake fluid. Pull out the float.
Connect the unit according to the operating instructions.
Attach the hose to the clutch slave cylinder bleed valve. Place the end of the hose into a bottle of brake fluid.
Keep the air release valve open until air bubbles stop escaping. While doing this, press the clutch pedal several times.
If there is air in the hydraulic system after repeated removal, the slave cylinder must be removed from the gearbox.
With the hydraulic system connected, push the piston pusher into the cylinder as far as it will go. As a result, residual air escapes through the expansion tank and maximum clutch travel is achieved
Attention: When the slave cylinder is removed, do not press the clutch pedal.
Insert the float into the expansion tank. Add brake fluid to the expansion tank up to the max mark. Screw on the cap of the expansion tank.