K9 - it is a pretty simple procedure...I assume you have an ATCO actuator which was stock with my 210 EZ loader trailer. You need two people. First attach your hitch and ball to the coupler on your trailer. You will need that for mechanical leverage to pump up and down on the hitch to actuate your master cyllinder (simulates the load when braking). Next fill the master cyllinder reservoir. Leave the cap off so you can visually inspect fluid level. You'll want to keep that full enough at all times to no let air into the system. Then start with the wheel farthest from the actuator - rear port I believe. Loosen the bleed valve nut a bit. Then add a small piece (18 inches or so) of plastic tubing to the bleed valve (about 1/4 in I.D). Submerge the free end of the tubing in a cup or small bottle with a couple inches of hydraulic fluid in it. Now loosen the bleed valve enough to allow a little fluid to flow. Holler to the other person on the hitch to slowly pump. You should see fluid going into your cup/bottle and if there is air in system you will see a few bubbles in your cup/bottle as well as the maser cyllinder reservoir. Submerging the end of the tubing and not opening the valve much ensures no air is introduced on the upstroke. Once your stream is clear (should take just a few strokes), tighten the bleed valve, remove tubing and repeat process for other rear wheel. Then move to the front set. Add fluid to the master cyllinder reservoir as needed to keep it no less than 1/2 full.. In a pinch you can omit the bleed valve tubing and submersion but you have to make sure you are tightening the valve while fluid is being emitted - can be messy. Top off your master cyllinder reservoir as needed.
It isn't hard. If you have zero fluid left, I'd check that you have intact lines. I had two get severed right by the brake connection, from, I believe, suspension movement up and down.....Barry
