I started having trouble with front brake calipers sticking on my Interstate, so I took them apart and cleaned everything real well and reinstalled. I went to bleed the brakes, and they would not respond at all to bleeding them the traditional way. I have bled the brakes on cars and some of my Harley bikes in the past with no real issues, but these were not working at all, and apparently had a lot of air in the lines. I went and bought a Mityvac kit with the hand pump and pressure gauge, and it was a miracle worker. Worked perfectly and only took a few minutes, and was worth its weight in gold! I will never bleed brakes again without it. If you don't have one and are going to take calipers apart or flush and put new brake fluid in, it is the only way to go IMO.
