I'm looking at tutorials on the Web, maybe I
can do this
If you can attach a hose to a little valve, coordination to pull a lever while turning a little wrench about 1/4 to 1/3 of a turn, and pour liquid into a small container, you can bleed a hydraulic line.
Here's the basics for a quick and dirty hydraulic line (brake) bleed:
Tape a 1 inch thick block of anything you have laying around against the throttle to keep you from bottoming out the brake lever and over extending the master piston. When you pull the brake lever, the end of the lever should hit this block, not the hand grip.
Put a clear hose on the bleeder valve. Put the other end of the hose into a small container of some kind that will hold liquid.
Open the top reservoir at the master cylinder and fill it up.
Loosen the bleeder valve just a little then turn the wrench until it meets the first indication of resistance. You're going for about finger tight.
Squeeze the brake lever and release the bleeder valve while maintaining pressure on the lever until brake fluid flows out through the tube.
Don't loosen the valve any more than necessary.
Always maintain lever pressure while the valve is open. Squeeze gently, don't death grip it.
Just before the brake lever bottoms out against the block, close the bleeder valve.
Watch the hose while the valve is open, don't let the fluid flow back into the caliper. If you don't have enough lever left and it starts backward, close the valve and continue the process normally.
Repeat the last two steps about 15-20 times or so to purge the upper hydraulic line.
Keep an eye on the fluid level in the reservoir. Refill it when it reaches about half full.
Keep up the handle/valve process until there are no more bubbles or crud in the clear hose.
Go slow, go easy, don't get in a hurry. Once you start, don't stop until it's complete. (If you stop for lunch or anything in the middle of this process, any bubbles in the lines will work their way uphill and you'll be back at the beginning by the time you get back to work)
Once it's just fluid and no bubbles, close the valve securely, fill the reservoir and put the top back on the reservoir.
Check the brakes to verify they feel right then do a short check ride at low speed to check the brakes before you start operating at high speeds.
Done.
That will get the air purged out of the lines. That's all there is to it. No magic, no mystery tools, no PhD in fluid dynamics, no tenth rate clock watching technician to screw anything up. That's all there is to it.
If you have dual front brakes, the process changes a little bit however that's the basics of it.
To do it properly, you need to remove the brake caliper from the motorcycle, turn it upside down and dump all the fluid out and start from an empty caliper and brake line. A simple brake bleed will get air bubbles out however it won't really clear out the fluid in the lower chambers without taking forever.
