[zeus87gn]

Note: This procedure is also suitable for vacuum systems as well.
On a P/M, the acc MUST be pumped down for Bench Bleeding.

Step 1 - Be sure there is clean fluid in the d/s of the bowl. Remove and replace the fluid if necessary. Use the lint free rags to clean the bowl if needed.

Step 2 - Remove the two flare nuts that hold the brake lines into the P/M cylinder using a flare wrench if they are not already disconnected. Brake fluid may begin to leak out of these two ‘ports’. Connect the two fittings with hoses into these ports and use the hoses to route the fluid back into the d/s of the bowl.
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Step 3 - With the key off, have an assistant depress the brake pedal to force fluid out of the ports, through the fittings/hoses and back into the d/s of the bowl. Air bubbles should appear in the hoses and may come out of the suction ports in the bottom of the bowl. As the air works into the bowl, try not to allow the air to be sucked into the hose when the assistant is releasing the pedal. It may be of help to depress/release the pedal slowly and momentarily hold the pedal fully depressed if a lot of air is present. This will give the air a chance to come to the top of the fluid in the bowl. Work the air out in this method until there is no air present during any part of the pedal movement.

Once all the air is removed, the fittings with hoses can be removed and the brake lines reconnected. Some fluid will leak out of the ports. Clean up as appropriate. The wheel cylinders and calipers must now be bled to complete this process. There is air in the lines.