QuestionHi Chris, recently i took my risers off my motorcycle for about 3 weeks. I took them off to replace them. Anyway, when i put them back on i had no pressure in my front brake. I had the handlebars upside down for approx. 3 weeks. I figured i'd bleed the brakes. I have. There is no air coming out, but pure fluid. I still dont have any pressure to the calipers. I have a new master cylynder on the way, but im not sure that is the problem. There are 2 calipers on the front wheel. It seems really awkward that both calipers would freeze up at the same time. Any help would be apprieciated. Thank you. Donald
AnswerHi Donald.
Bleeding brakes, as you know, is not a complicated thing and it works to get air bubbles out of the line.
But, here's the part they don't tell you;
Some bikes have an additional problem with both the clutch (hydraulic) and front brakes, including my own on my V65 Magna. The problem stems from the configuration of the master cylinder, which is that the connection to the hydraulic line at the master cylinder creates a pocket that air bubbles like to hide in (this is called a reverse trap) and the method for bleeding that section is a little tricky if you've never done it before.
Here's the proceedure;
1) Bleed the clutch/brake line like normal.
2) Put a wrench on the banjo fitting and squeeze the lever.
3) (NOTE: Use a box end wrench for this) While holding the clutch/brake lever in, crack loose the fitting and reclose it quickly. Have a rag over the fitting connection that you are working on because it will spit at you as pressure expells the air and a little fluid.
<<<<<<<IMPORTANT NOTE: DO NOT release pressure on the lever till the fitting is tightened back up or you will suck air back into the line.>>>>>>>
4) Test the clutch/brake again. If done correctly, you will have pressure near the beginning of the lever movement rather than at the end.
5) repeat as needed, but you should not need more than 2-3 times to get the system working correctly.
Good luck.
FALCON
