bleeding air / getting tilt/trim unit to work after service

Ok finally got all my seals on and figured it all out...upon reassembly, I cant get the unit to run right.

the relieve valve was open when reinstalling and when I got the unit put back on the boat, I tightened the valve and while the ram was full extended I filled up as much as I could.

it still wouldnt raise or lower, sometimes it would lower, but still havent got it to raise up.

Whats the process from a completely empty tilt and trim unit to get it to work again?

thanks

U tube is your friend....Add fluid release air....add fluid release air.... add fluid release air...Make sure the motor is up and locked as it will crash in the fluid is not full.....

I got it going. Thanks