1. Brake fluid reservoir; 2. Clutch master cylinder; 3. Clutch slave cylinder with release bearing; 4. Primary valve; 5. Discharge pipeline; 6. Feed pipeline.
It is necessary to remove air from the clutch hydraulic drive when the clutch pedal does not return to its original position or returns with a delay, the clutch does not disengage completely, or if the hydraulic drive system has opened.
Precautions: Since the clutch hydraulic system contains brake fluid, the relevant instructions in the chapter "Brake system" must be taken into account. Brake fluid is poisonous and corrodes paint.
Check the brake fluid level in the reservoir and top it up if necessary.
Caution: The fluid level in the reservoir should not drop too much and always top up with fresh brake fluid.
Remove the dust cap from the bleed valve on the slave cylinder. The bleed valve is located on top of the transmission in front of the left engine/gearbox mount. Attach a clear hose to the bleed valve.
Place the other end of the hose in a container partially filled with brake fluid to prevent air from entering the system during the bleeding process.
Carefully loosen the bleed valve one turn using a spanner to avoid damaging the edges of the valve.
The assistant should press the clutch pedal all the way until no more air bubbles come out of the hose. At the same time, constantly add fresh brake fluid to the reservoir.
Caution: When replacing brake fluid (according to the maintenance plan) pump it out until fresh brake fluid, which has a lighter color, starts to come out.
Tighten the air bleed valve. Pull off the hose and put on the dust cap.
Lower the car.
Add brake fluid up to the "MAX" mark.
Check the operation of the clutch and brakes.