Adjust with nut 5 (see fig. 112) free travel of the working cylinder pusher, equal to 4-5 mm. After adjustment, nut 5 is fixed with lock nut 6. The value of the free travel of the pusher is controlled with a ruler or a special template.
After performing the specified adjustments, the free play of the clutch pedal (before the clutch starts to disengage) should be 25-35 mm.
Before bleeding the clutch hydraulic drive, check the fluid level in the reservoir, add fluid if necessary. Put it on the head of the nipple 9 (see fig. 112) the working cylinder hose, the lower end of which is immersed in a vessel with the fluid used for the hydraulic drive. Press the clutch pedal sharply 3-5 times at intervals of 2-3 seconds and, holding the pedal in the pressed position, unscrew the nipple 9 by 1/2-3/4 of a turn, displace the fluid in the drive together with the air through the hose into the vessel by pressing the pedal. After the pedal reaches the extreme forward position and the flow of fluid through the hose stops, screw the nipple all the way in.
Repeat the above operation until all air bubbles have come out and, keeping the pedal pressed, tighten the fitting until it stops, remove the hose and put on the fitting cap.
When bleeding, make sure that the fluid level in the reservoir is above the hole for the tube going to the master cylinder, and that the end of the bleeding hose is constantly immersed in the fluid.
If, despite prolonged pumping, air bubbles come out of the hose, then check the reliability of the fastening of the connections, find out if there are cracks in the tubes or leaks in the connections with the fittings. Air may penetrate through faulty sealing rings of the master or slave cylinder.