Motorcycle Repair: honda atv brakes, bleeding brakes, honda atv

Question
Chris, I have a 92 honda 300 atv can you tell me. how to bleed the front brakes.  It has plenty of brake fluid but has no brakes I dont even know how to adjust the front brakes.  If you can help please help  

thanks

richard

Answer
Hi Richard.
 The proceedure for bleeding brakes is just like on a car.

If you have a high spot in the system, then that will create problems.  Try to make sure that the bleeder nipple on the caliper and the master cylinder have the only high points in the system.

Some bikes have an additional problem with the front brakes.  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