rear brake making me go crazy!!!!
Thread Starter
|
Cruiser
Joined: Nov 2007
Posts: 102
Likes: 0
From: dayton, ohio
rear brake making me go crazy!!!!
installed chrome rims and tires, all went great but now i have brakes SOMETIMES. bled em over and over and it seems to be good then POW pedal goes!!! have bled them several times even with a vacum bleeder. all is fine then i move bike or go for a ride and they seem to go. i can pump them and they come back....roll the bike and maybe it stays maybe pedal goes.......ahhhahhh what gives.....any ideas?????
Elite HDF Member
Joined: Nov 2010
Posts: 3,846
Likes: 173
From: Simi Valley, CA
Chances are you bent the rotor during your tire and wheel swap. The bent rotor is pushing the pads away from the rotor when you ride or push the bike. Then your first pump (or two...) brings the pads back to the rotor and subsequent pumps feel normal.
I'm not saying with absolute certainty that this is your problem, but it's a definite possibilty, and since the problem began when you changed the wheel/tire it's a very probable cause.
I'm not saying with absolute certainty that this is your problem, but it's a definite possibilty, and since the problem began when you changed the wheel/tire it's a very probable cause.
Last edited by 2black1s; Apr 2, 2012 at 08:31 PM.
Elite HDF Member
Joined: Nov 2010
Posts: 3,846
Likes: 173
From: Simi Valley, CA
Yeah.
Jack up the rear wheel, depress the brake pedal and release, have someone rotate the wheel while you observe the brakes pads for movement. That should give you a rough idea of what's going on.
Also, if you have a dial indicator you can measure the rotor runout.
If you dont have access to a dial indicator you could rig up a pointer out of a coat hanger or something similar to determine the runout. Get it to sit in light contact with high point of the rotor, rotate the wheel and see how much space you get between the rotor and the pointer with a feeler gauge. Obviously this may not be as accurate as the indicator, but done with care it can get you close.
Jack up the rear wheel, depress the brake pedal and release, have someone rotate the wheel while you observe the brakes pads for movement. That should give you a rough idea of what's going on.
Also, if you have a dial indicator you can measure the rotor runout.
If you dont have access to a dial indicator you could rig up a pointer out of a coat hanger or something similar to determine the runout. Get it to sit in light contact with high point of the rotor, rotate the wheel and see how much space you get between the rotor and the pointer with a feeler gauge. Obviously this may not be as accurate as the indicator, but done with care it can get you close.
Outstanding HDF Member
Joined: Mar 2009
Posts: 2,216
Likes: 102
From: Central Illinois
Chances are you bent the rotor during your tire and wheel swap. The bent rotor is pushing the pads away from the rotor when you ride or push the bike. Then your first pump (or two...) brings the pads back to the rotor and subsequent pumps feel normal.
I'm not saying with absolute certainty that this is your problem, but it's a definite possibilty, and since the problem began when you changed the wheel/tire it's a very probable cause.
I'm not saying with absolute certainty that this is your problem, but it's a definite possibilty, and since the problem began when you changed the wheel/tire it's a very probable cause.
Trending Topics
Elite HDF Member
Joined: Nov 2010
Posts: 3,846
Likes: 173
From: Simi Valley, CA
I second the rotor pushing the pads in issue. Although I am thinking, if the rotor is not warped, the wheel face, where the rotor bolts on, is not squared with the axle. If that is the case it was machined wrong and would need the wheel replaced. If you do have excessive runout on your rotor, remove it and straightedge it on a flat surface. If its straight then remount the wheel back on the bike, without the rotor, and do a runout check of the wheel face where the rotor normally would be. If you still have the excessive runout, wheel replacement time.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
6 Weirdest Harley-Davidsons Ever Sold to the Public
Verdad Gallardo
7 Times Harley-Davidson Chucked Tradition Out the Window
Verdad Gallardo
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
Road Warrior
Joined: Feb 2010
Posts: 1,534
Likes: 10
installed chrome rims and tires, all went great but now i have brakes SOMETIMES. bled em over and over and it seems to be good then POW pedal goes!!! have bled them several times even with a vacum bleeder. all is fine then i move bike or go for a ride and they seem to go. i can pump them and they come back....roll the bike and maybe it stays maybe pedal goes.......ahhhahhh what gives.....any ideas?????
Thanks
Thread Starter
|
Cruiser
Joined: Nov 2007
Posts: 102
Likes: 0
From: dayton, ohio
not figured it out yet. bike is 07 flhtc no abs and the lines were not opened. gonna look at runout and see if everything is true today. dang it......looks good but cant show it off yet