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TOPIC: Re:Going nuts... Brake bleeding Forum Tools Post New Topic Show latest posts Rules

#1010647 Jaybo (User) Here, hold my beer... Gold Boarder Posts: 980 Going nuts... Brake bleeding 9 Months, 2 Weeks ago   So I have almost all of the stuff back on my bike and was bleeding my front brakes that were previously just fine. I am getting massive amounts of air coming through using my brake bleeder. Lines are newish SS braided. I did install new pads when I had it apart. Banjo's are all tight. I have cycled almost a full bottle of brake fluid through it at this point. What am I missing?   Logged       The administrator has disabled public write access. #1010650 Crokolyle (User) Senior Boarder Posts: 348 Re:Going nuts... Brake bleeding 9 Months, 2 Weeks ago   I did my brakes this spring using speed bleeders that I installed on both front and read brake calipers. You can find a post here on the clinic about how to order them, need one for the rear and two for the front. You do your normal routine to bleed the brakes bit never have to close the bleeder until you are done as they have a one way valve which means that you put in the brake fluid, pump the brakes until the fluid runs clear and then close the bleeder. One of the easier thing I have done on my roadie.   Logged     The administrator has disabled public write access. #1010651 Jaybo (User) Here, hold my beer... Gold Boarder Posts: 980 Re:Going nuts... Brake bleeding 9 Months, 2 Weeks ago   I'm using a vacuum pump and sucking the fluid through, normally very fast but I'm guessing there is an air leak somewhere. maybe rebuild the Master cylinder and calipers? Crokolyle wrote: I did my brakes this spring using speed bleeders that I installed on both front and read brake calipers. You can find a post here on the clinic about how to order them, need one for the rear and two for the front. You do your normal routine to bleed the brakes bit never have to close the bleeder until you are done as they have a one way valve which means that you put in the brake fluid, pump the brakes until the fluid runs clear and then close the bleeder. One of the easier thing I have done on my roadie.   Logged       The administrator has disabled public write access. #1010657 thefrazdogg (User) Senior Boarder Posts: 281 Re:Going nuts... Brake bleeding 9 Months, 2 Weeks ago   Jaybo wrote: I'm using a vacuum pump and sucking the fluid through, normally very fast but I'm guessing there is an air leak somewhere. maybe rebuild the Master cylinder and calipers? Crokolyle wrote: I did my brakes this spring using speed bleeders that I installed on both front and read brake calipers. You can find a post here on the clinic about how to order them, need one for the rear and two for the front. You do your normal routine to bleed the brakes bit never have to close the bleeder until you are done as they have a one way valve which means that you put in the brake fluid, pump the brakes until the fluid runs clear and then close the bleeder. One of the easier thing I have done on my roadie. I was having that same problem. Leave the cap off the master cylinder over night. There were air bubbles stuck. Sometimes, it just takes time for them to bubble up.   Logged       The administrator has disabled public write access. #1010658 Jclevesque (User) Platinum Boarder Posts: 1461 Re:Going nuts... Brake bleeding 9 Months, 2 Weeks ago   I rebuilt the front brake on my XS and used a tie wrap to apply pressure on the front brake lever tied to the bars overnight along with the master cylinder cover off and bled all the air out. I will try it with my bike next winter when I do a full rebuild of the brakes and forks. It can be frustrating for sure.   Logged       The administrator has disabled public write access. #1010685 Jaybo (User) Here, hold my beer... Gold Boarder Posts: 980 Re:Going nuts... Brake bleeding 9 Months, 2 Weeks ago   This is sucking tons of air though, I'm guessing it is a leak but no idea where it could be. maybe a leak in the master cylinder?   Logged       The administrator has disabled public write access. #1010690 texasscott1 (User) Two of a kind Platinum Boarder Posts: 4486 Re:Going nuts... Brake bleeding 9 Months, 2 Weeks ago   Using a vacuum pump will produce a lot of air in the clear line to the pump. The reason is that the suction is pulling air past the loose bleeder screw. If you'll just open one bleeder at a time on the front the system will bleed by gravity. For the rear use the brake pedal to build pressure and then release it through the bleeder just like we always did on cars. Before draining the front work the lever just a little until all of the small bubbles stop appearing in the reservoir. Don't press it hard or you'll get a spout out of the reservoir.   Logged     My 99 Standard Test Mule Scott B.   The administrator has disabled public write access. #1010692 SKWEARpeg (User) Platinum Boarder Posts: 12885 Re:Going nuts... Brake bleeding 9 Months, 2 Weeks ago   You can use a screwdriver handle to tap on the splitter area, while working the bubbles out with the brake lever as Scott mentioned, also.   Logged       The administrator has disabled public write access. #1010695 Shores (User) Go getchur scooter! Platinum Boarder Posts: 6961 Re:Going nuts... Brake bleeding 9 Months, 2 Weeks ago   Jaybo wrote: This is sucking tons of air though, I'm guessing it is a leak but no idea where it could be. maybe a leak in the master cylinder? Don't think too much. You'll hurt the team! Your MC worked fine before you started messing with it, so messing with it is the problem. Do it old school and just close all valves, remove the MC cover, fill the res, open one valve, squeeze and hold the lever, close same valve, release lever, repeat.   Logged     The west is the best - Jim Morrison Photo by GreenMachine   The administrator has disabled public write access. #1010703 Jaybo (User) Here, hold my beer... Gold Boarder Posts: 980 Re:Going nuts... Brake bleeding 9 Months, 2 Weeks ago   OK, so after leaving it be last night and coming home with a fresh bottle of oil, The brakes seem to have bled themselves. I think you're right Steve, I overthunk it, and overloaded my meager circuits? Shores wrote: Jaybo wrote: This is sucking tons of air though, I'm guessing it is a leak but no idea where it could be. maybe a leak in the master cylinder? Don't think too much. You'll hurt the team! Your MC worked fine before you started messing with it, so messing with it is the problem. Do it old school and just close all valves, remove the MC cover, fill the res, open one valve, squeeze and hold the lever, close same valve, release lever, repeat.   Logged       The administrator has disabled public write access.

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