Question about 2012 Yamaha FJR 1300A
How do you bleed the front brakes on a bike with dual front discs and only one bleed valve.
There has to be a bleed nipple on both calipers - its impossible to bleed a two calipers on separate sides of the bike with two brake lines with one bleed nipple - go back and have another better look.
Posted on May 15, 2014
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Posted on Jan 02, 2017
One easy thing to try is clamp the front brake lever overnight. If there are any air bubbles in the system they should be compressed and in theory work their way to the highest point in the system - the master cylinder. Doesn't always work but the price is right.
My experience has been air enters the calipers more than it does the master cylinder due to miscommunication between the person squeezing the lever and the person opening the bleed screw. They do have bleed kits these days that make it a little easier.
Posted on Apr 06, 2009
your rotor(s) are bent so when you bleed the brakes everything is good but when your riding the bent rotor is pushing the the caliper pistons back and when you go to brake you have to pump them up take rotors off and inspect them
Posted on May 15, 2009
SOURCE: REAR BRAKE WONT BLEED
these links may help you out.
im a member of thumpertalk as well as advriders.com. issues like such are common but still solutions are dependent to the current behavior and status of your brakes.
If you did not find the links helpful, please do not hesitate to post a question in the community forums.
ps. happy trails
Posted on May 22, 2009
gravity bleed. make sure fluid is always full. crack open the bleeder screw and let the brake fluid drip until no bubbles. Then close bleeder top off fluid and replace cap. Now, pull the brake handle. If there is no pressure or has bleed down, the master cylinder is kaput.
Posted on Jun 20, 2009
Squeeze brake lever or depress brake pedal with mild force and hold pressure as you loosen bleed nipple (small dome shaped nut with tiny hole in centre) slightly to allow trapped air/water to spray out. maintain pressure till an uninterrupted flow of clean brake fluid is emitted, tighten up bleed nipple and replenish hydraulic reservior with NEW fluid. Test before hitting the tracks. Cheers.
Posted on Apr 28, 2010
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