Squealing noise
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Road Master
Joined: Jul 2020
Posts: 766
Likes: 167
From: USA
Squealing noise
97 heritage, I have a squeaking/squealing noise that you can hear at low speeds, fairly loud. It sounds like the rear area, it will stop when I hit the rear brakes, and then resume when I let off the rear brake.
Any ideas?
Thanks
Any ideas?
Thanks
Seasoned HDF Member
Joined: Mar 2010
Posts: 20,960
Likes: 7,487
From: Poolville
Could be a few things..
Either the rear wheel is a little out of alignment,
The rotor is warped.
Or there is moisture in the system and what this causes is when the Bike is ridin a while the moisture in the brake fluid will expand from heat and will apply the pads onto the rotor and then warp the rotor even.. Happened to me.. If you crack the bleeder on the caliper and it goes away after a ride, It would be a good indication of expansion or possibly a caliper that is not releasing all the way and time to rebuild..
I dial indicator would rule out the rotor..
Either the rear wheel is a little out of alignment,
The rotor is warped.
Or there is moisture in the system and what this causes is when the Bike is ridin a while the moisture in the brake fluid will expand from heat and will apply the pads onto the rotor and then warp the rotor even.. Happened to me.. If you crack the bleeder on the caliper and it goes away after a ride, It would be a good indication of expansion or possibly a caliper that is not releasing all the way and time to rebuild..
I dial indicator would rule out the rotor..
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,554
Likes: 3,309
From: Cental, MI
That fluid looks OK to My Eye... Betting you have one of those Anti rattle clips awry!!!
Unless you have replace something in Rear lately!!!!
Always check the last thing you worked on!!!!
Unless you have replace something in Rear lately!!!!
Always check the last thing you worked on!!!!
Last edited by Racepres; Dec 17, 2023 at 12:54 PM.
Seasoned HDF Member
Joined: Mar 2010
Posts: 20,960
Likes: 7,487
From: Poolville
Pretty sure that your 97 requires Dot 5.. In that case it's a purple silicone base fluid and when moisture infiltrates it turns it yellowish.. I would remove all the fluid in the Master and fill with new DOT 5 and flush the entire rear system... It's pretty common with the Heritage and Fatboy system...
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
Pretty sure that your 97 requires Dot 5.. In that case it's a purple silicone base fluid and when moisture infiltrates it turns it yellowish.. I would remove all the fluid in the Master and fill with new DOT 5 and flush the entire rear system... It's pretty common with the Heritage and Fatboy system...
Stellar HDF Member
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
change out the fluid for sure, put a drop of fluid in some water. If it ***** up it is DOT5 if it disperses then it is 4. I always make sure the PO didn't do something stupid. Then make sure the caliper piston is clean, crud getting under the boot can keep the piston from retracting causing it to drag.
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Seasoned HDF Member
Joined: Jun 2017
Posts: 5,315
Likes: 4,272
From: Granville New York
How's the brake pads look? I'll bet a ham sandwich they're about done
if you clean the sight glass on the side of the reservoir you will see the level without having to take off the cap. Unknown maintenance history and i would definitely change every fluid on the bike.
if you clean the sight glass on the side of the reservoir you will see the level without having to take off the cap. Unknown maintenance history and i would definitely change every fluid on the bike.
Last edited by Screamin beagle; Dec 17, 2023 at 04:19 PM.
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,554
Likes: 3,309
From: Cental, MI
change out the fluid for sure, put a drop of fluid in some water. If it ***** up it is DOT5 if it disperses then it is 4. I always make sure the PO didn't do something stupid. Then make sure the caliper piston is clean, crud getting under the boot can keep the piston from retracting causing it to drag.