Brake Fluid Flushing, Best way? |
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Brake Fluid Flushing, Best way? |
Allan |
Aug 26 2005, 08:02 PM
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#1
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
I did a search and used all the combo's like brake AND fluid AND flush but didn't find anything titled correctly.
Question is, since I'm rebuilding my calipers this weekend I want to flush out all the old brake fluid and refill with some nice new clean stuff. What is the best way to get all the old stuff out? |
bondo |
Aug 26 2005, 08:06 PM
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#2
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Practicing my perpendicular parking Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California |
Use a fluid of another color, and bleed with your favorite method until the new color comes out everywhere.. then drive it a bit (to stir things up) and do it some more. (not sure baout 914s, but my Mustang calipers hold so much fluid that I can get some of the old color after a drive)
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Cap'n Krusty |
Aug 26 2005, 08:08 PM
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#3
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
I use an old hospital vacuum pump, others use low pressure air assisted "power bleeding". The good old fashioned pump through an open bleeder technique works well, as long as you keep the end of the hose immersed in the catch bottle. Helps to let it just run out until the reservoir is empty before you begin with the new fluid. Officially, you "should" use .5L per caliper, and add another .5L for the reservoir and master cylinder. Might be overkill, but maybe not. The Cap'n
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SGB |
Aug 26 2005, 08:29 PM
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#4
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just visiting Group: Members Posts: 4,086 Joined: 8-March 03 From: Huntsville, AL Member No.: 404 Region Association: South East States |
I used one of these power bleeders and a whole liter of fluid.
pelican parts power bleeder I was horified at the stuff that floated to the top (water), and settled to the bottom (rust?) in the jar. It really made a masurable difference in pedal feel. |
SteveL |
Aug 26 2005, 08:34 PM
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#5
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Senior Member Group: Members Posts: 661 Joined: 7-August 03 From: Andover, MN Member No.: 991 Region Association: None |
I used one of the power bleeders from Pelican too. Worked great on all the import cars I've used it on. Best $60 I've spent.
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Tobra |
Aug 26 2005, 08:39 PM
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#6
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Senior Member Group: Members Posts: 1,453 Joined: 22-August 05 From: Sacramento, CA Member No.: 4,634 |
Pushing it out works way better than pulling it out. Like the fellow above suggested, flush it, drive it a bit, then do it again. It will stay nice longer if you get out ALL the contaminants, but it should still be done periodically. Brake fluid is very hygroscopic, or is that hydroscopic, whatever,it sucks up water like nobodies business.
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TravisNeff |
Aug 26 2005, 08:47 PM
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#7
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region |
Start at the RR caliper put a hose on the nipple, dump the hose in a jar immersed in a little fluid. Crack the nipple and pump the pedal, watch the resivour - once you can replace with fresh fluid (don't run it dry, or you'll spend more time bleeding). Watch the fluid to come out clean, once it does doe the normal brake bleeding technique and start on the LR, RF then LF. Repeat as necessary.
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Allan |
Aug 26 2005, 08:50 PM
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#8
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
Just a little food for thought. When I was dorking around with the rear calipers I accidentally let the resevoir drain. When I put fluid in it bubbles came up so I am pretty sure I have a shit load of air in the system.
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Trekkor |
Aug 26 2005, 08:56 PM
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#9
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I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
Speed Bleeders are so cool. Get four pairs.
Bleed the lower right rear until fresh fluid comes out. Do the upper right. left rear, right front, left front. Done (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) if you still have have mushy pedal, do this. KT |
McMark |
Aug 26 2005, 09:55 PM
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#10
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
I agree with trekkor that Speed Bleeders are a BIG BIG WINNER! (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif)
Regardless, I'd go overkill and run a quart of Castrol GTX through each caliper. It's amazing what comes out, even after you've run 90% of a quart through. After running a ton through the systemto clean it, use the Long Hose method, pioneered by Trekkor to bleed it. |
SLITS |
Aug 26 2005, 11:24 PM
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#11
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) Damn, my secret is out......aspirator (vacuum pump)....hook up, sit back, fill the res once in a while.......... hydroscopic....hydro = water |
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