Rear brake clunking
Thread Starter
|
Tourer
Joined: Oct 2017
Posts: 300
Likes: 45
From: Calgary
I'll check as soon as I get home tonight! the sound seems to be coming from further forward than that but I'll definitely take a look.
Thread Starter
|
Tourer
Joined: Oct 2017
Posts: 300
Likes: 45
From: Calgary
Still not high mileage. Power train alignment procedure with inclinometer...look up F86 post on it, he has the best method I have seen so far on doing this....
easiest way way for me to describe it is take the seat off, get the bike level on a flat surface, measure that you are 100% level by putting the inclinometer on the back/cross bone of the frame, zero it out by jacking the bike up or down on one side, I suggest the side stand side, use a small jack under side stand or foot peg...once zero out you know you frame is straight
move to rear wheel and put inclinometer on brake disc...what is your reading? If its zero your 100% aligned. If its not you have to turn the top engine mount in or out to zero It out. Once its zero your now properly aligned.
I usually do this two of three times just to make sure my reading are correct.
easiest way way for me to describe it is take the seat off, get the bike level on a flat surface, measure that you are 100% level by putting the inclinometer on the back/cross bone of the frame, zero it out by jacking the bike up or down on one side, I suggest the side stand side, use a small jack under side stand or foot peg...once zero out you know you frame is straight
move to rear wheel and put inclinometer on brake disc...what is your reading? If its zero your 100% aligned. If its not you have to turn the top engine mount in or out to zero It out. Once its zero your now properly aligned.
I usually do this two of three times just to make sure my reading are correct.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,922
Likes: 8,027
From: poway
You can get brake clunk simply by having some play in the pads. My 17 RK does it.. It's possible that the brakes pads simply have too much play in the caliper. The spring clip might be damaged. I'd pull the pads and look a them and the brake pins. While pulley bolts were mentioned, what about brake rotor bolts? Also if you have buttoned rotors, the buttons may simply be loose,.
2nd Gear
Joined: Mar 2020
Posts: 6
Likes: 4
From: ontario canada
Solve for x?
Did you solve this yo? I too have a mysterious clunk that defies everything anyone has ever posted in any forum on the whole entire internet. I checked. Twice. And been over my FXDLS with many many... many fine toothed combs. I literally busted out the magnifying glass like I was Sherlock Holmes.
I cant finger it out and its killing me inside, and also making me look stupid in front of my friends.
If youre out there and you fixed it please share with us your knowledge.
Love,
Sterling
I cant finger it out and its killing me inside, and also making me look stupid in front of my friends.
If youre out there and you fixed it please share with us your knowledge.
Love,
Sterling
Stage III
Joined: Jul 2024
Posts: 3
Likes: 0
From: NY
Hey all,
I've been doing some searching and will continue to do so but preparing for a long trip so trying to make sure my bike is in good order....
07 FXDB with around 50000 km (30k miles), had to brake hard for a light today. Did my best to get an understanding of it the rest of my ride. Happens at any speed if I lock up my back brake (can't get it to happen with the front brake, it won't lock up), clutch in or clutch out, and it definitely feels like the motor is shifting underneath me. Clunk sounds like it's coming from the left side but can't put my finger on exactly where.
i've been wondering if my motor mounts oughtta be replaced just due to the mileage on my bike and I get a vibration at high rpms. Would that be a logical solution? Front one looks a bit squished but I don't really know what I'm looking for. Can't get a good look at the rear, is there a trick for that?
Also worth noting front and rear suspension were both done over the winter so I don't think it's that. Head bearing was just recently adjusted (I WAS getting the clunk over bumps or with front brake applied but took care of that).
Any help would be great.
I've been doing some searching and will continue to do so but preparing for a long trip so trying to make sure my bike is in good order....
07 FXDB with around 50000 km (30k miles), had to brake hard for a light today. Did my best to get an understanding of it the rest of my ride. Happens at any speed if I lock up my back brake (can't get it to happen with the front brake, it won't lock up), clutch in or clutch out, and it definitely feels like the motor is shifting underneath me. Clunk sounds like it's coming from the left side but can't put my finger on exactly where.
i've been wondering if my motor mounts oughtta be replaced just due to the mileage on my bike and I get a vibration at high rpms. Would that be a logical solution? Front one looks a bit squished but I don't really know what I'm looking for. Can't get a good look at the rear, is there a trick for that?
Also worth noting front and rear suspension were both done over the winter so I don't think it's that. Head bearing was just recently adjusted (I WAS getting the clunk over bumps or with front brake applied but took care of that).
Any help would be great.
Last edited by Serpaco; Jul 18, 2024 at 11:09 PM.
Stage III
Joined: Jul 2024
Posts: 3
Likes: 0
From: NY
Did you solve this yo? I too have a mysterious clunk that defies everything anyone has ever posted in any forum on the whole entire internet. I checked. Twice. And been over my FXDLS with many many... many fine toothed combs. I literally busted out the magnifying glass like I was Sherlock Holmes.
I cant finger it out and its killing me inside, and also making me look stupid in front of my friends.
If youre out there and you fixed it please share with us your knowledge.
Love,
Sterling
I cant finger it out and its killing me inside, and also making me look stupid in front of my friends.
If youre out there and you fixed it please share with us your knowledge.
Love,
Sterling
Thread
Thread Starter
Forum
Replies
Last Post
spike95
General Harley Davidson Chat
124
Sep 7, 2014 08:06 PM
bikerbehaviorist
Softail Models
9
Nov 1, 2006 12:02 AM
