| Author | Message | ||
     Brewster |
The rear brake on my '99 S3T quit with no warning. I could not get it to bleed, and I was getting some air out of the bleeder. I rebuilt the master cylinder with a Buell kit, the same result.It is not leaking, the caliper piston will push fluid back into the MC reservoir. Bad brake switch? Suggestions? | ||
| Road_thing |
Make sure there are no leaks at the banjo bolts at both ends of the line. I had a two-day wrestling match with my S2 over the exact same problem, it turned out that the banjo fitting at the caliper was leaky. It's a Goodridge line, with the plain copper washers they supply. When I changed out the washers for the stockers with the rubber lips on them, it firmed up just fine. rt | ||
| Spiderman |
Ceck your piston. I recently fixed a rear brake on a X1 where the piston was freezing in the cyl.. | ||
| Firemanjim |
I know these bikes(actually all bikes I have worked on) are a bitch to bleed normally.I use a large syringe and force the fluid in from the caliper bleed screw instead of trying to pump up the pedal and bleed that way. | ||
| Al_lighton |
Another option that works... remove the rear caliper, put a piece of wood about the thickness of a rotor in the caliper, and elevate the caliper while you pump it up. The bubble gets caught at the high point at the pressure switch. If you elevate the caliper, the bubble rises and it'll bleed right up. Pain in the butt, but it works. Takes a couple people, though. Al Al | ||
| Road_thing |
Al, that's exactly what I did. And I learned 2 useful things: 1) Never bleed your brakes with the caliper at face level unless you've got a hose securely fastened to the bleeder screw. 2) DOT 5 brake fluid tastes like cr*p! rt | ||
| Lake_bueller |
I've never had troubles bleeding the S3T brake lines. It's the S1W lines with rear sets that are a real b-itch!!! I spent a few bucks and bought one of those pumb thing-a-migigs. Works great every time! | ||
| Al_lighton |
Hey RT, at least it was Dot5, not Dot4 or Dot3...That stuff will hurt you and everything it touches!! | ||
| Brewster |
I got it!! I am an old time Harley rider and a new Buell rider. I did not consider the small bore of the Buell master cylinder(3/8" maybe) and the short stroke of the brake pedal compared to a Harley(3/4" bore). When I removed the rear wheel for a new tire I pushed the brake piston back into the bore. On a Harley it would only take about 20-30 pumps to get the brake back. On the Buell it took 3-5 times as many...I was too impatient. VLE(Valuable Learning Experience) #2,478! |
