Bleeding brakes with hand suction/vacuum tool?
10-21-2003, 01:21 PM
#2
Drifting
Member Since: Dec 1999
Location: Reno nevada
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Re: Bleeding brakes with hand suction/vacuum tool? (Skyhigh)
Yes, That way you can tell how much fluid you have. If you suck it out of the master your inducing air in the lines. It's pretty easy to suck them dry with a vacuum bleeder. I don't think that the cap is vented either.
10-21-2003, 08:48 PM
#3
Melting Slicks
Re: Bleeding brakes with hand suction/vacuum tool? (Lt1er)
Many of us have found that gravity bleeding is the most effective way. Crack the bleeder and apply very slight pressure to the pedal to get it started and let it drip. Craig :seeya
10-21-2003, 10:01 PM
#4
Do a pressure bleed...
I've been bleeding those annoying Corvette brakes now for 19 years. This past week I just got tired of trying use vaccuum, foot pedals, and all the stuff. So yesterday I made one of the following:
http://www.bmw-m.net/TechProc/bleeder.htm
Today, I went out to the garage, pressurized the master cylinder, went around the car bleeding each port, then bled the Master Cylinder.....hardest brake pedal I've ever had. It took me longer to remove the rear tires than it did to do anything else. I recommend making (or buying) one.
http://www.bmw-m.net/TechProc/bleeder.htm
Today, I went out to the garage, pressurized the master cylinder, went around the car bleeding each port, then bled the Master Cylinder.....hardest brake pedal I've ever had. It took me longer to remove the rear tires than it did to do anything else. I recommend making (or buying) one.
10-21-2003, 10:12 PM
#5
Racer
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Re: Bleeding brakes with hand suction/vacuum tool? (Skyhigh)
Good luck with that bleeder b_tch POS! I did mine for quite a while before I figured out that it wouldn't seat properly.
10-21-2003, 10:46 PM
#6
Pro
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Re: Bleeding brakes with hand suction/vacuum tool? (Skyhigh)
I've bled brake for years w/the mity vac w/good results. I use small spring clamps to secure the line to the bleeder valve for a positive fit. And yes, leave the M.S. cap off, and clean the inside of it well before reinst.
I do prefer the pressure bleeder method, and I'm overdue to build one! :yesnod:
I do prefer the pressure bleeder method, and I'm overdue to build one! :yesnod:
10-21-2003, 11:58 PM
#7
Master Cylinder cap
Well, I wasnt' able to find a master cylinder cap....didn't have time to go to junkyard....so, I just took a flat piece of aluminum, ~1/4" thick, made a rubber gasket for it, and pressed it against the cast iron master cylinder with a large C-clamp. I drilled a hole for hooking up the hose and I also notched the underside so that the brake fluid would be shared/transferred between both volumes. Only spillage I had was when I removed it....I should really add a vent valve so I can siphon out the excess brake fluid when I'm done. I'm not even dreading the next bleed!
10-22-2003, 12:54 AM
#8
Race Director
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Re: Master Cylinder cap (carriljc)
Man - you folks seem to all be doing it the hard way! The best way I've ever seen is to get a set of the bleeders with the ball check valves. The check valve allows fluid to exit the bleeder and prevents air from entering the system when you release pressure. To bleed the brakes:
1. Crack the bleeder 1/4 turn
2. Depress the pedal a few times
3. Re-tighten the bleeder
Repeat for each caliper. You can even do this in your tuxedo. It takes approximately 30 sec. per wheel, less if you are not having a beer!
:D
1. Crack the bleeder 1/4 turn
2. Depress the pedal a few times
3. Re-tighten the bleeder
Repeat for each caliper. You can even do this in your tuxedo. It takes approximately 30 sec. per wheel, less if you are not having a beer!
:D
