Nicker, a huge thank-you for taking the time and posting this! I just completed replacing the oil separator (and a few misc hoses) and your step-by-step guide was spot on, thanks so much.
For those considering this tasks, know that you can do it. Take your time, follow the process, take pictures and label things if you need to. Also, be patient, there are some tight spots and some of the connectors will be difficult to remove. But with patience and perseverance, you can do it...there's nothing too difficult.