In the past, Dirt Rider has illustrated the proper methods of bleeding brake systems, but each time those processes assumed that you have good pedal or lever pressure to pump the fluid through. If you have changed the brake line, the process is a bit tougher. If you change the caliper, then the entire system is nearly dry and it takes some tricks to get the job done in a reasonable amount of time. You will need to buy some tools, but the price should be less than $10 for the lot. You will also need proper brake fluid and paper towels. At some point a helper is almost vital.

How To: Bleed Brake Lines And Calipers
1 The easiest way to refill a dry system is to force-bleed it from the bottom. You could try a squirt bottle, a large syringe or even the tool you use to suck oil out of a fork while setting the oil height. Brake systems are not compatible with oil, so any tool that has been used before must be clinically cleaned with brake cleaner before you begin. We bought a pump-type oil can for less than five dollars at Harbor Freight (www.harborfreightusa.com/Dirtrider), then labeled it for brake fluid. It will be used only for brake systems.


2 You'll also need a couple of feet of clean carburetor vent hose. Cut a section and force it over the oil can's outlet. We like to safety-wire the hose to the can. If the hose were to blow off from pressure, it will make a nasty mess. Worse, brake fluid can eat paint, so check your surroundings before you begin.

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