I bought a used master/slave assembly that had air in the system. It was almost new off a wreck and I got it cheap. Knowing the absence of a bleeder, I reverse bled it. Kinda like bench bleeding a brake master cylinder. I topped off the reservoir, my son held the MC up high while I had the slave down low, I then pushed in on the slave plunger and let it return out. I cycled it like this until my son stopped seeing air bubbles in the MC. Then I lightly tapped the slave and tubing with a screwdriver handle and cycled again. I did this until we stopped seeing air bubbles. Important: make sure everything runs downhill including the slave so no air can get trapped. We installed it on his Jeep and it has worked great for 6 months. You could probably do the same on the Jeep, just pull the slave.