Only with hydraulic clutch drive
Air must be removed from the clutch drive when the clutch pedal does not return or returns slowly, and also if the hydraulic system has opened.
Since the hydraulic clutch uses brake fluid, you should also read the relevant information in the section "Bleeding the brake system".
Raise the car from the front.
Check the brake fluid level in the common expansion tank and top up to the "max" mark if necessary.
Remove the dust caps from the air bleed valve on the slave cylinder and on the front left brake disc caliper.
Carefully open the air bleed valves.
Attach a transparent hose to the air bleed valve located on the disc brake caliper.
Fill the hose with brake fluid. To do this, open the air bleed valve located on the caliper. Slowly press the brake pedal (performed by an assistant) and hold it in this position. Close the air bleed valve and release the brake pedal. Then open the valve again and press the brake pedal again. Repeat the process until the hose is completely filled with brake fluid. Close the hose opening with your finger so that the brake fluid does not spill out.
Caution: The fluid level in the expansion tank should not drop too low; if necessary, top up the level with new brake fluid.
Place the hose end, closed with a finger, onto the air bleed valve on the clutch slave cylinder and open both valves.
Press the brake pedal, close the valve on the caliper, then release the brake pedal. Repeat this process until air bubbles stop entering the expansion tank. Constantly top up the tank with new brake fluid.
Close the bleed valves on the clutch slave cylinder and on the disc brake caliper. Remove the hose and put the dust caps on the bleed valves.
Lower the car.
With the clutch pedal depressed, open the bleed valve on the master cylinder and close it again as soon as brake fluid comes out of it.
Top up the fluid level in the expansion tank to the "check" mark.
The original text is available on the portal: www.VWMANUAL.ru
Check the functioning of the brake system and clutch.
Caution: When bleeding the clutch as described here without a suitable device, some air may remain in the system. This can be detected by scraping sounds when engaging the gear and by improper disengagement of the clutch. In this case, the system must be bled immediately in a workshop using a suitable device. In a workshop, air is usually bled from the clutch hydraulic system using a bleeding device. The device creates pressure in the brake fluid (maximum 2.5 bar). When using the device, air is removed first from the main cylinder and then from the working cylinder.
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