bleed screw
Hey Lexfox, this is from the instructions that came with son's new slave cylinder for his 85 ranger with the external slave.Warning,do not remove or loosen the set screw,it is not a bleeder on the cylinder,to bleed it you fill the cylinder on a 45 degree angle with brake fluid with the line side up till full then install the line.If possible hold the cylinder vertically with push rod facing down and slowly push the rod in approx 1" while watching for air bubbles in the master cylinder reservoir.After 10-15 strokes there should be no more air bubbles entering the reservoir and slowly bolt cylinder back on to housing.This is done by the way with the retaining strap kept on and it stays on. Hope this helps, Mike