The hydraulic pump will bleed itself. The bleeder you are talking about is to bleed the air out of the system before it gets to the pump. What do you call your steering box? I would tighten all the lines. If you are talking the lines out of the steering unit itself, remember it is a closed center system and you will need to have the pump pumping and then turn the steering wheel to shift the control valve. Do I make sense to you?