Due to the fact that the hydraulic clutch system is powered by brake fluid, please refer to the relevant provisions in chapter «Removal of air from the brake system».
Attention! Brake fluid is poisonous and must never be sucked out by mouth through a hose. To collect brake fluid, use special containers to prevent its erroneous use.
Attention! Do not allow brake fluid to enter the gearbox housing. If liquid gets in, wipe it off immediately with a rag.
Attention! There are two ways to bleed air from the hydraulic clutch. One of them is the use of a special device that raises the pressure in the expansion tank (max, up to 2.5 bar). In this way, air is removed when the car is repaired in a specialized workshop. In the absence of the aforementioned device, bleeding of the clutch hydraulic drive is carried out through the brake system circuit, because. The clutch is powered by brake fluid.
Pumping with a tool
1. Install the car on the goats and remove the engine mudguard.
2. Check the brake fluid level in the expansion tank. If necessary, add fluid up to the MAX mark.
3. Remove the dust cap from the bleed valve on the clutch slave cylinder and connect hose A of the tool to it (see arrow in illustration). Lower the free end of the hose into a container filled with brake fluid.
5.3. Remove the dust cap from the bleeder port on the slave cylinder and connect hose A of the tool to it (see arrow)
4. Turn on the tool and drain approximately 100 cm3 of brake fluid through the fitting by opening the fitting.
5. Tighten the fitting, turn off the tool, depress the clutch pedal several times and add brake fluid to the expansion tank up to the MAX mark. Screw on the tank lid.
6. Repeat the pumping procedure and, if there are no air bubbles in the outgoing brake fluid, then complete the pumping.
Bleeding through the brake circuit
7. Add brake fluid up to the MAX mark on the reservoir.
8. Remove the dust caps from the bleeder port on the working cylinder and on the front left wheel brake port.
9. Put a transparent hose on the bleeder caliper on the left wheel brake caliper.
10. Open the bleeder valve on the caliper to allow fluid to come out. Before doing this, ask an assistant to depress the brake pedal and hold it in this position. After filling the hose with brake fluid, tighten the fitting and ask an assistant to release the pedal. Repeat this procedure several times to fill the hose with brake fluid. To prevent liquid from flowing out of the hose, plug its free end with your finger.
Attention! Do not allow a significant drop in the level of brake fluid in the expansion tank. If necessary, add fresh fluid to the reservoir.
11. Put the free end of the transparent hose on the clutch slave cylinder bleeder and open both bleeders.
12. Squeeze out a brake pedal and close the union on a support of the left wheel. Release the brake pedal. Repeat this procedure until air bubbles stop appearing in the brake fluid in the expansion tank. At the same time, constantly add brake fluid to the expansion tank.
13. Close the fittings on the caliper and on the clutch slave cylinder. Remove the transparent hose and put protective caps on the fittings.
14. Lower the car on wheels.
15. Add brake fluid to the expansion tank up to the MAX mark.
16. Squeeze out a few clutch pedal. This will force any remaining air out of the system.
17. Check up functioning of brake system and coupling.
Attention! When the air is bled, a small amount of air may still remain in the hydraulic system. This will be felt by scratching noises when shifting gears and difficult to turn them off. In this case, it is recommended to contact the workshop to perform pumping using a special device.
18. Reinstall the engine mudguard.
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