K
kmkahuna
Guest
I've checked the forum, but no one seems to have tackled this issue yet: As I was finishing up the big stuff on a 40km check (oil, final drive, transmission, spline lube, valve adjustment), I started going down the list and noticed the brake inspection. So, being the idealistic, naive mechanic I am, I thought "hey, I'll just bleed the old fluid out".
You know the rest of the story....
Even with an airtight seal on the caliper bleed valve, air is being sucked into the system somewhere...
Now, the rear circuit of the ABS system is empty. How this happened is a mystery. Also a mystery is this: if you apply a vacuum on the rear caliper bleed valve, it's as if you're sucking on a straw: air just gets sucked all the way through the system. Where is this air coming from??? Why is a closed loop system allowing air into itself?
Anyway, the handy CD ROM is out, and will bleed the ABS rear circuit, now that my beautiful bike is in pieces all over the garage: the tupperware, the fuel tank, etc...
My question is: does this solve the problem? I will bleed out the ABS rear circuit per the instructions on the CD ROM, and do the same with the normal rear brake reservoir .. Also, is there a good homemade filler system that replaces that BMW specific attachment that goes on the ABS fill valve?
BTW: the hexhead tech section is just awesome: all the other stuff went like clockwork thanks to this forum.
I will try this procedure as my last gasp on trying to solve air in an ABS bike and if it doesn't work, I will cry uncle and bring in the calvary...at a BMW shop.
You know the rest of the story....
Even with an airtight seal on the caliper bleed valve, air is being sucked into the system somewhere...
Now, the rear circuit of the ABS system is empty. How this happened is a mystery. Also a mystery is this: if you apply a vacuum on the rear caliper bleed valve, it's as if you're sucking on a straw: air just gets sucked all the way through the system. Where is this air coming from??? Why is a closed loop system allowing air into itself?
Anyway, the handy CD ROM is out, and will bleed the ABS rear circuit, now that my beautiful bike is in pieces all over the garage: the tupperware, the fuel tank, etc...
My question is: does this solve the problem? I will bleed out the ABS rear circuit per the instructions on the CD ROM, and do the same with the normal rear brake reservoir .. Also, is there a good homemade filler system that replaces that BMW specific attachment that goes on the ABS fill valve?
BTW: the hexhead tech section is just awesome: all the other stuff went like clockwork thanks to this forum.
I will try this procedure as my last gasp on trying to solve air in an ABS bike and if it doesn't work, I will cry uncle and bring in the calvary...at a BMW shop.