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#4534177 - 10/04/17 09:10 PM What technique to remove stuck bleeders?
ZZman Offline


Registered: 03/17/08
Posts: 5786
Loc: Michigan
I am getting ready to flush my brake lines and have never done it before. I am expecting some stuck bleeders due to all the under vehicle rust. Youtube shows different techniques. What have you used that works well?
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#4534179 - 10/04/17 09:13 PM Re: What technique to remove stuck bleeders? [Re: ZZman]
maxdustington Offline


Registered: 01/21/17
Posts: 670
Loc: Toronna
I think it was Trav on here who recommended smacking the top of the bleeder with a hammer while applying rotational force with a box end wrench. Worked like a charm for me.
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#4534180 - 10/04/17 09:16 PM Re: What technique to remove stuck bleeders? [Re: ZZman]
michaelluscher Offline


Registered: 10/07/12
Posts: 2420
Loc: Staten Island, NY
Soak with penetrating oil before starting
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#4534185 - 10/04/17 09:21 PM Re: What technique to remove stuck bleeders? [Re: ZZman]
cpayne5 Offline


Registered: 12/28/05
Posts: 605
Loc: Virginia
I resort to penetrating oil and vise grips for bleeders that don't want to come out with a socket or wrench (ie, rounded off...). Wiggle it each way until you get some movement, then they usually will spin out without much trouble. You can also use some heat on it, if you have it.

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#4534186 - 10/04/17 09:22 PM Re: What technique to remove stuck bleeders? [Re: ZZman]
3800Series Offline


Registered: 08/02/14
Posts: 1452
Loc: Gulf Coast, MS
Be prepared to replace, they are fragile and even when done carefully they can still snap off.

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#4534200 - 10/04/17 09:56 PM Re: What technique to remove stuck bleeders? [Re: ZZman]
andyd Offline


Registered: 09/25/04
Posts: 7150
Loc: Marshfield , MA
I would start with a few passes with a wire brush. Then a spritz of penetrating oil. And the hammer tap.I have a 4 oz ball peen. Percussion works great. Be gentle, I have never successfully removed a sheared bleeder. If you remove the caliper, you could heat it up with a torch. Give the brake lines a hard look too. I quit messing with the bleeders on the Rat's front calipers when the bleeders started twisting apart and used them as cores for a pair of remans from Auto Zone. Please post follow up. TIA.
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#4534216 - 10/04/17 10:37 PM Re: What technique to remove stuck bleeders? [Re: ZZman]
blupupher Offline


Registered: 08/27/04
Posts: 4421
Loc: Katy, Republic of Texas
if you are replacing the bleeders, then fill the hollow core with some aluminum.
Get a piece just longer and about the diameter of the bleeder screw opening (welding wire works great for this). Put it in then hammer it gently into place. This fills the hollow cavity with metal and reduces the chance of breakage. If it does break, aluminum is easily drilled out if you have to easy-out the bleeder screw.
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#4534248 - 10/05/17 12:12 AM Re: What technique to remove stuck bleeders? [Re: ZZman]
oldhp Offline


Registered: 06/28/12
Posts: 1626
Loc: USA
Clean with wire brush, a dab of MMO or PB Blaster, let it sit 2-3 mins. Heat area around the bleeder with torch pretty good, as fast as you can, put ice on the bleeder screw. If it tings/pings, it should come right out. Always worked for me. Cheers2
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#4534281 - 10/05/17 04:41 AM Re: What technique to remove stuck bleeders? [Re: ZZman]
dlundblad Offline


Registered: 09/30/13
Posts: 10036
Loc: Indiana
When I did my truck's, (I am assuming it was never done as well.) I sprayed them with liquid wrench the week before. I did end up buying new anyways because the old ones looked pretty sad.

I think my bleeders are 8mm. I ended up using a long handled 3/8" ratchet with a 1/4" to 3/8" adapter. They came right off.


Edited by dlundblad (10/05/17 04:42 AM)
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#4534285 - 10/05/17 04:57 AM Re: What technique to remove stuck bleeders? [Re: ZZman]
Char Baby Offline


Registered: 05/25/05
Posts: 10022
Loc: ROCHESTER, NY
Living where I personally believe that we use more road salt than anywhere in the world smile , I do what most others have said:

*Use a wire brush first!
*Then spray with your favorite penetrating lube long before you plan on trying to remove the bleeder.
*Once the bleeder is removed, replace with an new one. I keep extras around for this reason.
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#4534342 - 10/05/17 07:03 AM Re: What technique to remove stuck bleeders? [Re: oldhp]
ZZman Offline


Registered: 03/17/08
Posts: 5786
Loc: Michigan
Originally Posted By: oldhp
Clean with wire brush, a dab of MMO or PB Blaster, let it sit 2-3 mins. Heat area around the bleeder with torch pretty good, as fast as you can, put ice on the bleeder screw. If it tings/pings, it should come right out. Always worked for me. Cheers2


Our city mechanic said something similar. Heat well and then pour cold water on it.
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#4534348 - 10/05/17 07:09 AM Re: What technique to remove stuck bleeders? [Re: ZZman]
rollinpete Offline


Registered: 03/20/17
Posts: 453
Loc: West Ma.
This method works real well...


https://www.youtube.com/watch?v=XV85K8g6SCs
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#4534360 - 10/05/17 07:20 AM Re: What technique to remove stuck bleeders? [Re: ZZman]
Donald Offline


Registered: 03/21/04
Posts: 20457
Loc: Upstate NY
And of course always use a 6 point wrench or socket.
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#4534373 - 10/05/17 07:53 AM Re: What technique to remove stuck bleeders? [Re: ZZman]
buck91 Offline


Registered: 04/17/12
Posts: 2449
Loc: West Michigan
Kroil or liquid wrench daily for a week if this is a Michigan car. I've had good results with drilling and using the bleeder repair kit. If the hydraulics are that neglected might just consider new calipers.
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#4534400 - 10/05/17 08:51 AM Re: What technique to remove stuck bleeders? [Re: ZZman]
LeakySeals Offline


Registered: 02/18/11
Posts: 6576
Loc: Hudson, NH
If its just one, replace the entire caliper with a reman. Its easy to do, and remans are so cheap these days its not worth the aggravation of fiddling with a stuck or stripped bleeder..
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