Seacraft 23Wa with Hynautic powersteering question

[gss036]

I ordered a gage, it was spendy, $26+change, then when I looked at the billing on my credit card, they had charged about $8 shipping and handling. Haven't got it yet but should get here this week, since they have already billed it out. The Seastar site has parts listing for just about any of thier or Hynautic systems. I think they are one and the same company now. Spendy, but at least I will get the right gage.
I don't think I have to worry about purging the system. The guy at the local hydralic shop, said to bleed off the air, open the fill spot and just check the oil level,( he will give a small amount if needed) reinstall the new gage and put air back into the system