Brake flush is the method used to flush out old dirty fluid of the engine and replace it with new clean fluid. Doing a brake flush on your own is quite easy and oftentimes you do not need the assistance of a professional to do it.
The easiest way to check whether you need to flush out the brake fluids in your car is to look at the condition of your brake fluid. If the brake fluid is dark in color or dirty then it is a sign that you need to flush your brake fluid.
The first step to a brake flushing procedure is to jack and secure the wheels using the jack. Make sure that the car and wheels are secured properly before you start flushing the brake fluids. Lift the car until you can put the jack stands under the vehicle.
Before you start the brake flushing process, you first need to clean the master cylinder to prevent any dirt or dust particles from entering the brake system once you open it up. To do this, just spray brake cleaner onto the master cylinder.
Once you are satisfied that the master cylinder is free from dirt and dust, you can now open the master cylinder. To do this, just unscrew the cap of the master cylinder.
After you have unscrewed the cap of the master cylinder you then need to remove the rubber cap from the bleed screw. It is important that you do not lose the rubber cap. Position the clear hose and use a wrench to open the bleed screw. The bleed screw is the device used to temporarily create an opening. Place the empty container at the end of the clear hose to capture the old fluid that will come out.
Once this is done, you can now flush the brake fluid. Always ensure that the brake fluid is above the minimum line. With the hand-held vacuum pump, develop a vacuum in the hose to start flushing out the brake fluid.
Once the vacuum has been developed, loosen the bleed screw so the brake fluids can flow properly into the hose. It is important that you regularly pump the vacuum to ensure the flow is steady. Make sure that you do not allow air to enter the system.
Flush out the old brake fluid until there are no more bubbles present in the hose. Once you see that there are no more bubbles, you can then tighten the screw using the wrench attached to the hose and bleed screw.
After tightening the screw, take off the hose and wrench. You need to recap the bleed screw using the rubber cap you previously removed. Repeat the entire process on all wheels until all the old brake fluid has been flushed out.
After you are done flushing out all the old brake fluid from all the wheels, you can now refill the master cylinder with the new brake fluid. After refilling the master cylinder, close the cap and screw it back on.