bul_racer
XS650 Addict
Thought I'd clean out my front brake and rebuild it. New seals in MC and caliper. I've read many of the posts on this subject and tried to follow the procedure recommended by gggGary. Removed caliper inserted piston just enough to hold it in place then filled with fluid. Attached C clamp on the piston & closed until fluid came out of the hose opening.
Some bubbles but not a lot.
Filled MC with some fluid but not full to top. Pumped lever with finger over the exit hole & it pushes fluid out but not impressive flow. Might have made a mistake by not priming the MC?
But it does push fluid out so I attached the upper hose, pulled lever to handlebar & taped in place overnight. Then I held fingers over lower part of upper hose while pumping lever. Fluid is expelled but, again, not at an impressive rate. Put finger over lower opening in the middle box & squirted fluid into the box till it came out the top. Then connected lower part of upper hose to the top of the box, still holding finger over lower opening. Connected upper part of lower hose, then holding fingers over lower end pumped lever till fluid comes out the end. Still, not impressive flow. Next connected lower of lower hose to caliper. Worked lever but no resistance.
Tried taping lever to handlebar & leaving overnight to see if any bubbles would come up. Don't think any did. Pumped lever with bleeder open. Small amount of fluid & bubbles came out on first 5 or 6 pumps but after that it did not seem to be moving. Opened bleeder & left overnight but no difference.
I hooked up a syringe to the bleeder valve. Syringe directions say to clamp lever to handlebar and then use suction to draw fluid out until all fluid is replaced. However, fluid does not move into the syringe. Tried pushing on the syringe but that didn't work either, as fluid was not accepted.
At this point I'm not sure what else to do. Maybe take MC apart & make sure it's primed. I didn't mention that I've pumped that lever at least 1000 times. I don't mind doing that & wouldn't mind doing 5000 if it would eventually make it right but I'm not sure it would.
One thing that's quite annoying is that without the top on the MC it leaks fluid from the bottom of the white plastic part of the MC, even with screws in to hold it down. My garage floor is getting a brake fluid bath...
Any help is appreciated.
Some bubbles but not a lot.
Filled MC with some fluid but not full to top. Pumped lever with finger over the exit hole & it pushes fluid out but not impressive flow. Might have made a mistake by not priming the MC?
But it does push fluid out so I attached the upper hose, pulled lever to handlebar & taped in place overnight. Then I held fingers over lower part of upper hose while pumping lever. Fluid is expelled but, again, not at an impressive rate. Put finger over lower opening in the middle box & squirted fluid into the box till it came out the top. Then connected lower part of upper hose to the top of the box, still holding finger over lower opening. Connected upper part of lower hose, then holding fingers over lower end pumped lever till fluid comes out the end. Still, not impressive flow. Next connected lower of lower hose to caliper. Worked lever but no resistance.
Tried taping lever to handlebar & leaving overnight to see if any bubbles would come up. Don't think any did. Pumped lever with bleeder open. Small amount of fluid & bubbles came out on first 5 or 6 pumps but after that it did not seem to be moving. Opened bleeder & left overnight but no difference.
I hooked up a syringe to the bleeder valve. Syringe directions say to clamp lever to handlebar and then use suction to draw fluid out until all fluid is replaced. However, fluid does not move into the syringe. Tried pushing on the syringe but that didn't work either, as fluid was not accepted.
At this point I'm not sure what else to do. Maybe take MC apart & make sure it's primed. I didn't mention that I've pumped that lever at least 1000 times. I don't mind doing that & wouldn't mind doing 5000 if it would eventually make it right but I'm not sure it would.
One thing that's quite annoying is that without the top on the MC it leaks fluid from the bottom of the white plastic part of the MC, even with screws in to hold it down. My garage floor is getting a brake fluid bath...
Any help is appreciated.