This is what I learned after tearing my hair out for 3 days. It was very difficult to get all the air out of the rear lines. I found and old timers trick on the internet. Take a canning jar and drill a hole in the top to push clear plastic tubbing to the bottom, leave about 18" hang out of the jar, drill a smaller hole in the top for the air to release. Fill the bottom of the jar enough to cover the bottom of the tubing in the jar. Now push the tubing over the bleeder after placing box wrench over the bleeder.Loop the tubing above the bleeder . This allows the air to escape but keeps fluid above the bleeder. Now open bleeder and remove master cover and start pumping slowly as to not splash fuid over everything. Keep a bottle of fluid at the master to keep the well full as to not pump it dry. Keep checking the tube above the bleeder to make sure the fluid is above the bleeder. The brake lines are not under pressure when you are not pumping, so no need close bleeder until all the air is removed from line. Now close off bleeder and move to next rear drivers side. This was a very slow procedure but it worked for me. I pumped for hours to get all the air out. Keep a light near your master to see if you're getting any air bubbles out of the master. You're not done until all bubbles are gone from master and fluid is above the bleeder. Repeat this as needed. If you have a adjustable proportioning valve to rear be sure that it is turned all the way closed putting full pressure to rears. You won't know if you got all the air out until you put it down and see if you can lock the rears up on gravel. Then proceed to tune your proportioning valve as to not not lock up the rears in a panic stop.I normally don't chat this much but I thought it was a good way for other to bleed and change fluid.
Al
