What i did is take a bolt that matches the screw threads, drill a decent size hole thru the center, cut the head off and add a nut w/gasket. Then i hoseclamped a rubber hose to that and a funnel. Hung the funnel and put some hydraulic fluid in and let it burp. Then cycled up n down. Peat...peat...n repeat til it goes all the way up and down. With rams extended remove fitting and let extra drain out. I used aw46 hydraulic oil but trim fluid or power steering fluid should work.
