Rear brake low compression ??
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Stage III
Joined: Apr 2022
Posts: 3
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From: New Jersey
Rear brake low compression ??
I got the tires changed at a shop and I got halfway down the block and hit the rear brakes like I usually do and they didn't catch at all. I had to stomp on the rear hard in order to get them to engage. Spun back around took it back to the shop that did them. The mechanic bled the brakes and still nothing. He bled them for almost 20 minutes they got maybe a tad bit better. He said " it's due to the new tires it will come back with time." Compression is still low and now today I noticed the brake light isn't coming on when I stomp on them. Can anyone chime in here? I'm mechanically inclined been rebuilding dirt bikes for years. I'm kicking myself in the rear for bringing my bike to the shop and being lazy and not doing it myself lol.
07 883 SPORTY
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07 883 SPORTY
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Stellar HDF Member
Joined: Feb 2013
Posts: 3,072
Likes: 1,727
From: Dallas, Texas
A lessen to remember, do you own wrenching. Good idea to pull the wheel and caliper and inspect for damage. New tires will improve braking, not go to sh*t after a tire change. After ya remount the wheel, ya gotta pump the brake to get the pistond to snug back up to the rotor.
HDF Community Team
Joined: Dec 2011
Posts: 8,601
Likes: 4,041
From: San Diego, CA
The rear brakes are notoriously hard to bleed. You might want to try using a vacuum bleeder. The fact your brake light doesn't work leads me to believe there might be air in the system.
John
John
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,626
Likes: 6,443
From: Honah Lee
Sounds like he accidentally let the piston get out of the rear caliper. This corrupted the pads when they got covered with brake fluid.
In his haste, he didn't bleed it. Then when he did, he didn't get it right plus the pads are lubricated.
Now it could be he didn't pump the pads back out before he gave it to you. (They push them back in to pull wheel )
It takes several pumps if pads are worn thin to get all back right. That was very dangerous thing for him to give it back to you like that. Of course, they play it down since you're not dead, are you.
I replace pads ever tire change. However, I do all the free labor except putting the tire on and balance.
Its not the tires or low compression. You need to find a competent service center. Good luck. I have never seen one. They are too busy trying to make a living.
Last time I carried my front tire in to get a tire put on, they bent the aluminum rim.
In his haste, he didn't bleed it. Then when he did, he didn't get it right plus the pads are lubricated.
Now it could be he didn't pump the pads back out before he gave it to you. (They push them back in to pull wheel )
It takes several pumps if pads are worn thin to get all back right. That was very dangerous thing for him to give it back to you like that. Of course, they play it down since you're not dead, are you.
I replace pads ever tire change. However, I do all the free labor except putting the tire on and balance.
Its not the tires or low compression. You need to find a competent service center. Good luck. I have never seen one. They are too busy trying to make a living.
Last time I carried my front tire in to get a tire put on, they bent the aluminum rim.
Last edited by Jackie Paper; Apr 14, 2022 at 07:52 AM.
Thread Starter
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Stage III
Joined: Apr 2022
Posts: 3
Likes: 0
From: New Jersey
Sounds like he accidentally let the piston get out of the rear caliper. This corrupted the pads when they got covered with brake fluid.
In his haste, he didn't bleed it. Then when he did, he didn't get it right plus the pads are lubricated.
Now it could be he didn't pump the pads back out before he gave it to you. (They push them back in to pull wheel )
It takes several pumps if pads are worn thin to get all back right. That was very dangerous thing for him to give it back to you like that. Of course, they play it down since you're not dead, are you.
I replace pads ever tire change. However, I do all the free labor except putting the tire on and balance.
Its not the tires or low compression. You need to find a competent service center. Good luck. I have never seen one. They are too busy trying to make a living.
Last time I carried my front tire in to get a tire put on, they bent the aluminum rim.
In his haste, he didn't bleed it. Then when he did, he didn't get it right plus the pads are lubricated.
Now it could be he didn't pump the pads back out before he gave it to you. (They push them back in to pull wheel )
It takes several pumps if pads are worn thin to get all back right. That was very dangerous thing for him to give it back to you like that. Of course, they play it down since you're not dead, are you.
I replace pads ever tire change. However, I do all the free labor except putting the tire on and balance.
Its not the tires or low compression. You need to find a competent service center. Good luck. I have never seen one. They are too busy trying to make a living.
Last time I carried my front tire in to get a tire put on, they bent the aluminum rim.
Yes exactly. I think I'll just figure it out on my own. No way in hell im ever going back to that guy. He'll probably mess up something else. the weirdest part is that he rode the bike before he gave it to me and I don't know how everything felt "normal" to him.
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Joined: Mar 2010
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From: Honah Lee
If it does, the bleeding destroyed the master by pushing the seals into corrosion were they never normally go. Or it's full of air. When you bleed, cap must be loose. Master level. On the front same but protect paint also.
Pull it from caliper bleeder with a hand vacuum pump with a jar attachment. I made mine from a master jar. I drilled two holes in the lid for tight fit with vacuum hose. One just thru and other all the way down. The down one to the bleeder on the caliper. Bleed easy no more then 8 or so.
The bottom hose in a layer of fluid shows bubbles if air. However, the threads leak a little, so there alway will be a little bubble
Master cups push tremendous but pulled, they will pull air into master
Once you understand it, it's no big deal. Those that don't know think they are hard to bleed.
Only safe way to bleed old is vacuum pull it out.
Last edited by Jackie Paper; Apr 14, 2022 at 12:42 PM.
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I got the tires changed at a shop and I got halfway down the block and hit the rear brakes like I usually do and they didn't catch at all. I had to stomp on the rear hard in order to get them to engage. Spun back around took it back to the shop that did them. The mechanic bled the brakes and still nothing. He bled them for almost 20 minutes they got maybe a tad bit better. He said " it's due to the new tires it will come back with time." Compression is still low and now today I noticed the brake light isn't coming on when I stomp on them. Can anyone chime in here? I'm mechanically inclined been rebuilding dirt bikes for years. I'm kicking myself in the rear for bringing my bike to the shop and being lazy and not doing it myself lol.
07 883 SPORTY
-Thanks
07 883 SPORTY
-Thanks
