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Car Forum / Driving, Maintenance, Tuning / General Car Topics / October 2005Is it possible to bleed brakes alone?
I only need to bleed one brake. Had to replace a leaky rear brake cylinder. Did not have to change any lines, so I just have to bleed that one wheel. I got no help. How can I bleed it alone (or can I)? Thanks GR They sell bleeder valves with check valves for this purpose. There are other things that you can buy too. Talk to the auto parts store. > I only need to bleed one brake. Had to replace a leaky rear brake > cylinder. Did not have to change any lines, so I just have to bleed > that one wheel. I got no help. How can I bleed it alone (or can I)? > Thanks > > GR >They sell bleeder valves with check valves for this purpose. There are >other [quoted text clipped - 9 lines] >> >> GR Another way is to attach a rubber hose of correct size to bleeder nipple and make hose just long enough to rest the other end in the bottom of a can or jar full of brake fluid so that no airs is sucked back it when pumping/bleeding the system. When I do it this way, I wrap a lot of thread tape on the thread of the bleeder valve to keep air from getting in that way. > >They sell bleeder valves with check valves for this purpose. There > are [quoted text clipped - 21 lines] > Topic URL: http://www.autoforumz.com/General-Discussion-bleed-brakes-ftopict140103.html > Visit Topic URL to contact author (reg. req'd). Report abuse: http://www.autoforumz.com/eform.php?p=678570 >I only need to bleed one brake. Had to replace a leaky rear brake > cylinder. Did not have to change any lines, so I just have to bleed > that one wheel. I got no help. How can I bleed it alone (or can I)? > Thanks > > GR Sometimes, this *gravity bleed* procedure works: open the bleed screw & let it sit a while (may take 1/2 hour) & drain by gravity. Close screw. Fill reservoir. Pump brake pedal. Go and re-open the bleed screw & let sit long enough again until you see fluid has run out. Close screw, refill reservoir, & it may be ok. May hafta do again. Luck to you, s > Sometimes, this *gravity bleed* procedure works: open the bleed >screw & [quoted text clipped - 5 lines] >refill >reservoir, & it may be ok. May hafta do again. Luck to you, s Thats a new one on me. Never heard of this one before and I have heard some strange ones too. Now I have heard of some presurizing the master cylinder resevoir with some air pressure to force the fluid through when bleeders are opened. > > Sometimes, this *gravity bleed* procedure works: open the bleed > >screw & [quoted text clipped - 12 lines] > > -- Gravity bleeding will work sometimes, well, lots of times. I lost my master cylinder top on an off road run, a branch came up and hooked it I guess and I ended up 25 miles from the nearest house with no brakes due to all the fluid splashing out. I was lucky and had a bottle of brake fluid along with extra oil and coolant in my spare parts box as I was running solo. I opened all 4 bleeders and just kept topping up my MC. It took over a half hour before I saw bubbles coming out and likely over an hour to finish, but it worked. That was 5 years ago and I haven't touched them since. Now if you have ABS then all bets are off. I have no idea if a gravity bleed will work on those systems. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's >Now if you have ABS then all bets are off. I have no idea if a gravity >bleed will work on those systems. Anti lock brakes have nothing to do with the brakes themselves other than pulsing the caliper. The process uses a Hall effects sensor on either the spindle or the axle to prove that the axle or spindle are still moving during braking action. The long and short of it is that it's a magnetic switch that I think creates a current that the computer is able to read. I've been working with them for years on commercial heating and air conditioning equiptment. ...Ron -- 68' Camaro RS 88' Firebird Formula 00' Mustang GT Vert > >Now if you have ABS then all bets are off. I have no idea if a gravity > >bleed will work on those systems. [quoted text clipped - 8 lines] > > ...Ron What about the ABS pumps and things on 'cars'? Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's >What about the ABS pumps and things on 'cars'? They are connected to the lines but are controlled by the computer through the Hall sensors. I really don't know much about how they work together as a team other than when the sensors notice that the wheels have stopped during a braking episode, the computer pulses the brake that has stopped. ...Ron >Mike >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >88 Cherokee 235 BFG AT's -- 68' Camaro RS 88' Firebird Formula 00' Mustang GT Vert |
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