PLEASE HELP with Dual Disk Brake iSSUE???
Thread Starter
|
Cruiser
Joined: Feb 2010
Posts: 115
Likes: 0
From: Sugar Grove,Illinois
PLEASE HELP with Dual Disk Brake iSSUE???
I have a 2002 Sportster with factory dual disk brakes up front.I just purchased it for my Lovely Girlfriend,The front brake lever was soft,so I figured no problem Bleed them?I have went through 6 bottles of Dot 5,new bleeders,rebuilding Master,all new banjo bolt gaskets and line gaskets too.Lever is Hard after bleeding.Once bike is started and starts to move,lever is soft and bottoms out,once you pump it it gets Hard and the brakes hold bike fine???WHAT CAN it BE???Theres no air in the lines!Do the calipers need rebuilding??i thought when calipers need rebuilding they should leak???ANY Help????I AM GOING NUTS!!!!Next step is the Dealer?????
Road Warrior
Joined: Jul 2009
Posts: 1,745
Likes: 1
From: A house.
I don't know about the warped rotor... I know you said you've run a few bottles of brake fluid through it trying to bleed the air out, BUT, if you get a hard lever by pumping it, you still have air in the system somewhere. Crack the line at the banjo fitting and bleed. Tap the entire length of the line with a screw driver or a wrench, anything to get the air up by gravity and bleed at every connection in the system. Might help to try reverse bleeding too. It's air...
Road Warrior
Joined: Nov 2008
Posts: 1,595
Likes: 8
From: Vancouver Island British Colombia Canada
Bike brakes are just a pig to deal with! You could have a few different issues here. You might have a flex line that is beginning to swell when you hold pressure on the brake. A new one would fix that.
You could have a plugged relief hole which would be in the bottom of your master cylinder. or you could still have air in your system as was mentioned. bleeding at the banjo is always a good idea because air gets trapped there a lot. you can also squeeze your brake lever and tie it in that position over night. in the morning, crack your bleeder screw and you might get a burp of air out.
You could have a plugged relief hole which would be in the bottom of your master cylinder. or you could still have air in your system as was mentioned. bleeding at the banjo is always a good idea because air gets trapped there a lot. you can also squeeze your brake lever and tie it in that position over night. in the morning, crack your bleeder screw and you might get a burp of air out.
Road Master
Joined: May 2010
Posts: 931
Likes: 112
From: Oregon
I agree with all that has been said above. Hatchetman is correct on the plugged vent/relief hole thing. It happens, though you said you rebuilt it. This leads me to air in the lines as others have said. Try this...............
Fill the reservoir, put the boot in and snug up the cap plate. Then bleed a little bit. Be VERY careful not to drain the reservoir. Fill again and bleed again.
6 bottles.............you should never have to do even close to that. I just did new pads on the rear because I let a dealer work on my bike, new rear tire. I'm positive they pushed the caliper back to get it off, driving all the crap back into the caliper and master. I rebuilt the caliper and ran new dot 5 through the line.
Rear brake is now tight and good weather is here for the weekend. Can hardly wait to get some serious riding in and use the rear brake............I actually favor it in normal riding.................yea guys, I know, always apply both but I roll to most stops and the rear sees less use normally so that's how I balance wear............Har
Keep at it man, you'll get it.
Fill the reservoir, put the boot in and snug up the cap plate. Then bleed a little bit. Be VERY careful not to drain the reservoir. Fill again and bleed again.
6 bottles.............you should never have to do even close to that. I just did new pads on the rear because I let a dealer work on my bike, new rear tire. I'm positive they pushed the caliper back to get it off, driving all the crap back into the caliper and master. I rebuilt the caliper and ran new dot 5 through the line.
Rear brake is now tight and good weather is here for the weekend. Can hardly wait to get some serious riding in and use the rear brake............I actually favor it in normal riding.................yea guys, I know, always apply both but I roll to most stops and the rear sees less use normally so that's how I balance wear............Har
Keep at it man, you'll get it.
Thread Starter
|
Cruiser
Joined: Feb 2010
Posts: 115
Likes: 0
From: Sugar Grove,Illinois
Which banjo fitting?At the Master or at each caliper????I have heard about tapping the line just Forgot about it.I will keep you posted.Thanks again ken
Trending Topics
Thread Starter
|
Cruiser
Joined: Feb 2010
Posts: 115
Likes: 0
From: Sugar Grove,Illinois
Bent rotor is very Possible since the bike was laid down,I cant wait to check that out,I did have to replace a lower fork leg because it was cracked from that spill.I would Gladly replace rotor and be very HAPPY!!!Keep you posted.Thanks Again Ken
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski