Just watched a video on yootube where the guy was changing out his ic pump on a MB, he only removed the belly plastic not the wheel liner and showed how he crimped off the hoses and removed the unit....which leads to my next question concerning purging the air from those lines. He used a hose setup and removed a cap specifically for purging.. I vaguelly remember reading here where someone wrote that our system is self-purging. I'll consult your link to the Johnson pump then wing it. Meanwhile, it's out to the 99 degree shop to get this party started. Thanks 180