Yep...the only two I've dealt with....the helm is the pump, and if it's a brand new system it usually takes a few times to bleed all the air out of it.
Oh well then just follow the instruction that will come with the new system....Personally the two boats I've have with hydraulic steering (to me anyway) wasn't that much easier to turn than the old well greased two cable system.
Now I'm talking outboards here. I just noticed you said Bayliner, right? Is this and I/O?
I was afraid of that and I apologize for assuming wrong. I only deal with outboards and your set up will be different. I'll PM a couple of guys that will know for you or your could repost your question in the I/O section as the ones that will know your system will be hanging out there.